./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 cde23df1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/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-cde23df-m [2024-06-14 13:51:32,998 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 13:51:33,068 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 13:51:33,073 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 13:51:33,073 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 13:51:33,096 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 13:51:33,096 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 13:51:33,096 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 13:51:33,097 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 13:51:33,100 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 13:51:33,100 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 13:51:33,100 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 13:51:33,101 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 13:51:33,102 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 13:51:33,102 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 13:51:33,102 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 13:51:33,103 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 13:51:33,103 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 13:51:33,103 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 13:51:33,103 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 13:51:33,103 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 13:51:33,104 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 13:51:33,104 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 13:51:33,104 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 13:51:33,104 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 13:51:33,104 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 13:51:33,105 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 13:51:33,105 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 13:51:33,105 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 13:51:33,106 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 13:51:33,106 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 13:51:33,106 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 13:51:33,107 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 13:51:33,107 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 13:51:33,107 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 13:51:33,107 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 13:51:33,107 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 13:51:33,108 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 13:51:33,112 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 13:51:33,112 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 13:51:33,112 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 13:51:33,112 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 13:51:33,112 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 13:51:33,113 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 13:51:33,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 13:51:33,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 13:51:33,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 13:51:33,343 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 13:51:33,344 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 13:51:33,345 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi003_tso.i [2024-06-14 13:51:34,359 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 13:51:34,601 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 13:51:34,601 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi003_tso.i [2024-06-14 13:51:34,621 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d12588c78/0fc6257ae4eb47c0891abe311b2074cb/FLAG1209a0649 [2024-06-14 13:51:34,636 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d12588c78/0fc6257ae4eb47c0891abe311b2074cb [2024-06-14 13:51:34,638 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 13:51:34,638 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 13:51:34,640 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/rfi003_tso.yml/witness.yml [2024-06-14 13:51:34,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 13:51:34,776 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 13:51:34,777 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 13:51:34,777 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 13:51:34,780 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 13:51:34,781 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 01:51:34" (1/2) ... [2024-06-14 13:51:34,782 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3549c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:51:34, skipping insertion in model container [2024-06-14 13:51:34,782 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 01:51:34" (1/2) ... [2024-06-14 13:51:34,785 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@52eac74b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:51:34, skipping insertion in model container [2024-06-14 13:51:34,785 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:51:34" (2/2) ... [2024-06-14 13:51:34,786 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3549c7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:51:34, skipping insertion in model container [2024-06-14 13:51:34,786 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:51:34" (2/2) ... [2024-06-14 13:51:34,786 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 13:51:34,837 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 13:51:34,838 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) [2024-06-14 13:51:34,839 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) [2024-06-14 13:51:34,839 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 13:51:34,839 INFO L106 edCorrectnessWitness]: ghost_update [L836-L836] multithreaded = 1; [2024-06-14 13:51:34,872 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 13:51:35,246 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 13:51:35,262 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 13:51:35,490 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 13:51:35,523 INFO L206 MainTranslator]: Completed translation [2024-06-14 13:51:35,524 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:51:35 WrapperNode [2024-06-14 13:51:35,524 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 13:51:35,525 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 13:51:35,525 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 13:51:35,526 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 13:51:35,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:51:35" (1/1) ... [2024-06-14 13:51:35,563 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:51:35" (1/1) ... [2024-06-14 13:51:35,619 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 177 [2024-06-14 13:51:35,620 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 13:51:35,621 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 13:51:35,621 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 13:51:35,621 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 13:51:35,629 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:51:35" (1/1) ... [2024-06-14 13:51:35,630 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:51:35" (1/1) ... [2024-06-14 13:51:35,649 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:51:35" (1/1) ... [2024-06-14 13:51:35,681 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-14 13:51:35,681 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:51:35" (1/1) ... [2024-06-14 13:51:35,682 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:51:35" (1/1) ... [2024-06-14 13:51:35,705 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:51:35" (1/1) ... [2024-06-14 13:51:35,707 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:51:35" (1/1) ... [2024-06-14 13:51:35,712 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:51:35" (1/1) ... [2024-06-14 13:51:35,716 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:51:35" (1/1) ... [2024-06-14 13:51:35,726 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 13:51:35,731 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 13:51:35,731 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 13:51:35,731 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 13:51:35,732 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:51:35" (1/1) ... [2024-06-14 13:51:35,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 13:51:35,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 13:51:35,754 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-14 13:51:35,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-14 13:51:35,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 13:51:35,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 13:51:35,781 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 13:51:35,781 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 13:51:35,781 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 13:51:35,781 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 13:51:35,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 13:51:35,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 13:51:35,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 13:51:35,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 13:51:35,783 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 13:51:35,875 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 13:51:35,877 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 13:51:36,530 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 13:51:36,531 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 13:51:36,728 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 13:51:36,728 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 13:51:36,730 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 01:51:36 BoogieIcfgContainer [2024-06-14 13:51:36,730 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 13:51:36,732 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 13:51:36,732 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 13:51:36,735 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 13:51:36,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 01:51:34" (1/4) ... [2024-06-14 13:51:36,739 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d66f82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 01:51:36, skipping insertion in model container [2024-06-14 13:51:36,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:51:34" (2/4) ... [2024-06-14 13:51:36,739 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d66f82 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 01:51:36, skipping insertion in model container [2024-06-14 13:51:36,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:51:35" (3/4) ... [2024-06-14 13:51:36,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d66f82 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 01:51:36, skipping insertion in model container [2024-06-14 13:51:36,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 01:51:36" (4/4) ... [2024-06-14 13:51:36,741 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi003_tso.i [2024-06-14 13:51:36,754 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 13:51:36,755 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 13:51:36,755 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 13:51:36,808 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 13:51:36,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 33 transitions, 74 flow [2024-06-14 13:51:36,869 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-06-14 13:51:36,869 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 13:51:36,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 31 events. 0/31 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. 0/29 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 13:51:36,871 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 33 transitions, 74 flow [2024-06-14 13:51:36,874 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 25 transitions, 56 flow [2024-06-14 13:51:36,905 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 13:51:36,919 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;@b1b5b2b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 13:51:36,919 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 13:51:36,924 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 13:51:36,925 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 13:51:36,925 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 13:51:36,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:51:36,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 13:51:36,926 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:51:36,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:51:36,931 INFO L85 PathProgramCache]: Analyzing trace with hash -175134480, now seen corresponding path program 1 times [2024-06-14 13:51:36,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:51:36,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400294686] [2024-06-14 13:51:36,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:51:36,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:51:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:51:40,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:51:40,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:51:40,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400294686] [2024-06-14 13:51:40,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400294686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:51:40,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:51:40,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 13:51:40,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851881878] [2024-06-14 13:51:40,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:51:40,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 13:51:40,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:51:40,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 13:51:40,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 13:51:40,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 13:51:40,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:40,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:51:40,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 13:51:40,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:51:40,388 INFO L124 PetriNetUnfolderBase]: 216/392 cut-off events. [2024-06-14 13:51:40,388 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-14 13:51:40,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 795 conditions, 392 events. 216/392 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1458 event pairs, 133 based on Foata normal form. 1/387 useless extension candidates. Maximal degree in co-relation 781. Up to 378 conditions per place. [2024-06-14 13:51:40,392 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 25 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-06-14 13:51:40,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 127 flow [2024-06-14 13:51:40,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 13:51:40,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 13:51:40,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2024-06-14 13:51:40,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2024-06-14 13:51:40,402 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 56 flow. Second operand 3 states and 51 transitions. [2024-06-14 13:51:40,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 127 flow [2024-06-14 13:51:40,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 13:51:40,406 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 75 flow [2024-06-14 13:51:40,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2024-06-14 13:51:40,409 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2024-06-14 13:51:40,410 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 75 flow [2024-06-14 13:51:40,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:40,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:51:40,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:51:40,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 13:51:40,411 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:51:40,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:51:40,411 INFO L85 PathProgramCache]: Analyzing trace with hash -800495793, now seen corresponding path program 1 times [2024-06-14 13:51:40,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:51:40,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059011478] [2024-06-14 13:51:40,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:51:40,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:51:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:51:42,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:51:42,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:51:42,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059011478] [2024-06-14 13:51:42,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059011478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:51:42,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:51:42,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 13:51:42,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111221616] [2024-06-14 13:51:42,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:51:42,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 13:51:42,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:51:42,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 13:51:42,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 13:51:42,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 13:51:42,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:42,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:51:42,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 13:51:42,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:51:42,526 INFO L124 PetriNetUnfolderBase]: 207/377 cut-off events. [2024-06-14 13:51:42,526 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-06-14 13:51:42,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 859 conditions, 377 events. 207/377 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1414 event pairs, 76 based on Foata normal form. 6/383 useless extension candidates. Maximal degree in co-relation 844. Up to 336 conditions per place. [2024-06-14 13:51:42,531 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 31 selfloop transitions, 5 changer transitions 0/39 dead transitions. [2024-06-14 13:51:42,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 39 transitions, 177 flow [2024-06-14 13:51:42,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 13:51:42,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 13:51:42,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-06-14 13:51:42,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-14 13:51:42,535 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 75 flow. Second operand 4 states and 66 transitions. [2024-06-14 13:51:42,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 39 transitions, 177 flow [2024-06-14 13:51:42,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 39 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 13:51:42,537 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 99 flow [2024-06-14 13:51:42,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2024-06-14 13:51:42,539 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2024-06-14 13:51:42,539 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 99 flow [2024-06-14 13:51:42,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:42,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:51:42,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:51:42,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 13:51:42,540 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)] === [2024-06-14 13:51:42,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:51:42,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1926644317, now seen corresponding path program 1 times [2024-06-14 13:51:42,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:51:42,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996789347] [2024-06-14 13:51:42,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:51:42,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:51:42,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:51:46,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:51:46,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:51:46,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996789347] [2024-06-14 13:51:46,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996789347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:51:46,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:51:46,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 13:51:46,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112882606] [2024-06-14 13:51:46,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:51:46,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 13:51:46,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:51:46,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 13:51:46,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-14 13:51:46,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:51:46,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 99 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:46,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:51:46,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:51:46,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:51:46,439 INFO L124 PetriNetUnfolderBase]: 243/433 cut-off events. [2024-06-14 13:51:46,439 INFO L125 PetriNetUnfolderBase]: For 223/223 co-relation queries the response was YES. [2024-06-14 13:51:46,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1092 conditions, 433 events. 243/433 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1576 event pairs, 144 based on Foata normal form. 1/434 useless extension candidates. Maximal degree in co-relation 1075. Up to 421 conditions per place. [2024-06-14 13:51:46,442 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 28 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2024-06-14 13:51:46,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 36 transitions, 185 flow [2024-06-14 13:51:46,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 13:51:46,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 13:51:46,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2024-06-14 13:51:46,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-14 13:51:46,445 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 99 flow. Second operand 5 states and 58 transitions. [2024-06-14 13:51:46,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 36 transitions, 185 flow [2024-06-14 13:51:46,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 176 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-14 13:51:46,447 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 117 flow [2024-06-14 13:51:46,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2024-06-14 13:51:46,448 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2024-06-14 13:51:46,448 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 117 flow [2024-06-14 13:51:46,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:46,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:51:46,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:51:46,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 13:51:46,450 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:51:46,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:51:46,450 INFO L85 PathProgramCache]: Analyzing trace with hash 881829901, now seen corresponding path program 1 times [2024-06-14 13:51:46,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:51:46,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306872637] [2024-06-14 13:51:46,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:51:46,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:51:46,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:51:49,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:51:49,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:51:49,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306872637] [2024-06-14 13:51:49,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306872637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:51:49,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:51:49,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:51:49,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488374183] [2024-06-14 13:51:49,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:51:49,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:51:49,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:51:49,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:51:49,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:51:49,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 13:51:49,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 117 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:49,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:51:49,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 13:51:49,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:51:49,724 INFO L124 PetriNetUnfolderBase]: 239/425 cut-off events. [2024-06-14 13:51:49,724 INFO L125 PetriNetUnfolderBase]: For 374/374 co-relation queries the response was YES. [2024-06-14 13:51:49,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 425 events. 239/425 cut-off events. For 374/374 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1475 event pairs, 41 based on Foata normal form. 4/429 useless extension candidates. Maximal degree in co-relation 1123. Up to 362 conditions per place. [2024-06-14 13:51:49,728 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 38 selfloop transitions, 8 changer transitions 0/48 dead transitions. [2024-06-14 13:51:49,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 247 flow [2024-06-14 13:51:49,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:51:49,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:51:49,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 82 transitions. [2024-06-14 13:51:49,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-06-14 13:51:49,732 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 117 flow. Second operand 6 states and 82 transitions. [2024-06-14 13:51:49,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 247 flow [2024-06-14 13:51:49,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 48 transitions, 236 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-14 13:51:49,734 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 131 flow [2024-06-14 13:51:49,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=131, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2024-06-14 13:51:49,735 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2024-06-14 13:51:49,736 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 131 flow [2024-06-14 13:51:49,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:49,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:51:49,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:51:49,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 13:51:49,736 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:51:49,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:51:49,737 INFO L85 PathProgramCache]: Analyzing trace with hash 427699862, now seen corresponding path program 1 times [2024-06-14 13:51:49,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:51:49,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271743887] [2024-06-14 13:51:49,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:51:49,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:51:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:51:52,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:51:52,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:51:52,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271743887] [2024-06-14 13:51:52,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271743887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:51:52,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:51:52,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:51:52,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317001403] [2024-06-14 13:51:52,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:51:52,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:51:52,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:51:52,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:51:52,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:51:52,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:51:52,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 131 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:52,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:51:52,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:51:52,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:51:53,128 INFO L124 PetriNetUnfolderBase]: 237/422 cut-off events. [2024-06-14 13:51:53,128 INFO L125 PetriNetUnfolderBase]: For 600/600 co-relation queries the response was YES. [2024-06-14 13:51:53,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1231 conditions, 422 events. 237/422 cut-off events. For 600/600 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1485 event pairs, 103 based on Foata normal form. 1/423 useless extension candidates. Maximal degree in co-relation 1211. Up to 407 conditions per place. [2024-06-14 13:51:53,130 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 30 selfloop transitions, 8 changer transitions 0/40 dead transitions. [2024-06-14 13:51:53,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 40 transitions, 229 flow [2024-06-14 13:51:53,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:51:53,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:51:53,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-06-14 13:51:53,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3282828282828283 [2024-06-14 13:51:53,132 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 131 flow. Second operand 6 states and 65 transitions. [2024-06-14 13:51:53,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 40 transitions, 229 flow [2024-06-14 13:51:53,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 40 transitions, 213 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-14 13:51:53,137 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 148 flow [2024-06-14 13:51:53,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=148, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-06-14 13:51:53,142 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 13 predicate places. [2024-06-14 13:51:53,142 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 148 flow [2024-06-14 13:51:53,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:53,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:51:53,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:51:53,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 13:51:53,144 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:51:53,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:51:53,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1889463618, now seen corresponding path program 1 times [2024-06-14 13:51:53,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:51:53,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483569770] [2024-06-14 13:51:53,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:51:53,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:51:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:51:56,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:51:56,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:51:56,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483569770] [2024-06-14 13:51:56,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483569770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:51:56,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:51:56,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:51:56,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303635616] [2024-06-14 13:51:56,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:51:56,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:51:56,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:51:56,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:51:56,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:51:56,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:51:56,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 148 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:56,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:51:56,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:51:56,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:51:57,274 INFO L124 PetriNetUnfolderBase]: 243/432 cut-off events. [2024-06-14 13:51:57,274 INFO L125 PetriNetUnfolderBase]: For 830/830 co-relation queries the response was YES. [2024-06-14 13:51:57,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1331 conditions, 432 events. 243/432 cut-off events. For 830/830 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1534 event pairs, 82 based on Foata normal form. 2/434 useless extension candidates. Maximal degree in co-relation 1309. Up to 385 conditions per place. [2024-06-14 13:51:57,277 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 37 selfloop transitions, 11 changer transitions 0/50 dead transitions. [2024-06-14 13:51:57,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 50 transitions, 298 flow [2024-06-14 13:51:57,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:51:57,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:51:57,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 73 transitions. [2024-06-14 13:51:57,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686868686868687 [2024-06-14 13:51:57,278 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 148 flow. Second operand 6 states and 73 transitions. [2024-06-14 13:51:57,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 50 transitions, 298 flow [2024-06-14 13:51:57,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 50 transitions, 281 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 13:51:57,280 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 178 flow [2024-06-14 13:51:57,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=178, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2024-06-14 13:51:57,281 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 15 predicate places. [2024-06-14 13:51:57,281 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 178 flow [2024-06-14 13:51:57,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:57,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:51:57,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:51:57,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 13:51:57,282 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:51:57,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:51:57,282 INFO L85 PathProgramCache]: Analyzing trace with hash 399386812, now seen corresponding path program 2 times [2024-06-14 13:51:57,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:51:57,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649129705] [2024-06-14 13:51:57,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:51:57,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:51:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:52:00,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:52:00,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:52:00,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649129705] [2024-06-14 13:52:00,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649129705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:52:00,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:52:00,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:52:00,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028538378] [2024-06-14 13:52:00,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:52:00,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:52:00,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:52:00,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:52:00,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:52:00,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:52:00,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 178 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:00,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:52:00,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:52:00,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:52:00,956 INFO L124 PetriNetUnfolderBase]: 239/428 cut-off events. [2024-06-14 13:52:00,957 INFO L125 PetriNetUnfolderBase]: For 1132/1134 co-relation queries the response was YES. [2024-06-14 13:52:00,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1403 conditions, 428 events. 239/428 cut-off events. For 1132/1134 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1518 event pairs, 88 based on Foata normal form. 4/432 useless extension candidates. Maximal degree in co-relation 1380. Up to 382 conditions per place. [2024-06-14 13:52:00,959 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 34 selfloop transitions, 11 changer transitions 0/47 dead transitions. [2024-06-14 13:52:00,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 288 flow [2024-06-14 13:52:00,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:52:00,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:52:00,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-06-14 13:52:00,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-14 13:52:00,961 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 178 flow. Second operand 6 states and 70 transitions. [2024-06-14 13:52:00,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 288 flow [2024-06-14 13:52:00,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 47 transitions, 274 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-14 13:52:00,963 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 191 flow [2024-06-14 13:52:00,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=191, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2024-06-14 13:52:00,964 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 19 predicate places. [2024-06-14 13:52:00,964 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 191 flow [2024-06-14 13:52:00,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:00,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:52:00,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:52:00,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 13:52:00,964 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:52:00,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:52:00,965 INFO L85 PathProgramCache]: Analyzing trace with hash 373794700, now seen corresponding path program 1 times [2024-06-14 13:52:00,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:52:00,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761462979] [2024-06-14 13:52:00,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:52:00,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:52:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:52:04,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:52:04,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:52:04,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761462979] [2024-06-14 13:52:04,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761462979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:52:04,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:52:04,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:52:04,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647694167] [2024-06-14 13:52:04,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:52:04,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:52:04,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:52:04,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:52:04,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:52:04,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:52:04,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 191 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) [2024-06-14 13:52:04,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:52:04,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:52:04,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:52:04,862 INFO L124 PetriNetUnfolderBase]: 237/423 cut-off events. [2024-06-14 13:52:04,862 INFO L125 PetriNetUnfolderBase]: For 1357/1357 co-relation queries the response was YES. [2024-06-14 13:52:04,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1437 conditions, 423 events. 237/423 cut-off events. For 1357/1357 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1495 event pairs, 99 based on Foata normal form. 1/424 useless extension candidates. Maximal degree in co-relation 1412. Up to 405 conditions per place. [2024-06-14 13:52:04,868 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 35 selfloop transitions, 10 changer transitions 0/47 dead transitions. [2024-06-14 13:52:04,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 47 transitions, 307 flow [2024-06-14 13:52:04,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:52:04,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:52:04,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-06-14 13:52:04,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31601731601731603 [2024-06-14 13:52:04,869 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 191 flow. Second operand 7 states and 73 transitions. [2024-06-14 13:52:04,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 47 transitions, 307 flow [2024-06-14 13:52:04,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 47 transitions, 277 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-14 13:52:04,872 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 200 flow [2024-06-14 13:52:04,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=200, PETRI_PLACES=52, PETRI_TRANSITIONS=40} [2024-06-14 13:52:04,874 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 20 predicate places. [2024-06-14 13:52:04,874 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 200 flow [2024-06-14 13:52:04,874 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) [2024-06-14 13:52:04,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:52:04,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:52:04,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 13:52:04,875 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:52:04,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:52:04,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1075995905, now seen corresponding path program 1 times [2024-06-14 13:52:04,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:52:04,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150684051] [2024-06-14 13:52:04,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:52:04,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:52:04,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:52:07,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:52:07,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:52:07,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150684051] [2024-06-14 13:52:07,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150684051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:52:07,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:52:07,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:52:07,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137070052] [2024-06-14 13:52:07,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:52:07,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:52:07,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:52:07,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:52:07,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:52:07,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:52:07,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 200 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) [2024-06-14 13:52:07,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:52:07,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:52:07,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:52:07,980 INFO L124 PetriNetUnfolderBase]: 243/434 cut-off events. [2024-06-14 13:52:07,980 INFO L125 PetriNetUnfolderBase]: For 1687/1689 co-relation queries the response was YES. [2024-06-14 13:52:07,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1518 conditions, 434 events. 243/434 cut-off events. For 1687/1689 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1535 event pairs, 85 based on Foata normal form. 4/438 useless extension candidates. Maximal degree in co-relation 1493. Up to 383 conditions per place. [2024-06-14 13:52:07,983 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 39 selfloop transitions, 17 changer transitions 0/58 dead transitions. [2024-06-14 13:52:07,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 58 transitions, 366 flow [2024-06-14 13:52:07,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:52:07,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:52:07,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-14 13:52:07,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463203463203463 [2024-06-14 13:52:07,984 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 200 flow. Second operand 7 states and 80 transitions. [2024-06-14 13:52:07,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 58 transitions, 366 flow [2024-06-14 13:52:07,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 58 transitions, 343 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-14 13:52:07,986 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 262 flow [2024-06-14 13:52:07,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=262, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2024-06-14 13:52:07,987 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 24 predicate places. [2024-06-14 13:52:07,987 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 262 flow [2024-06-14 13:52:07,987 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) [2024-06-14 13:52:07,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:52:07,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:52:07,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 13:52:07,988 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:52:07,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:52:07,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1960148395, now seen corresponding path program 2 times [2024-06-14 13:52:07,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:52:07,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723418651] [2024-06-14 13:52:07,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:52:07,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:52:08,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:52:10,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:52:10,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:52:10,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723418651] [2024-06-14 13:52:10,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723418651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:52:10,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:52:10,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:52:10,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418368971] [2024-06-14 13:52:10,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:52:10,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:52:10,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:52:10,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:52:10,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:52:11,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:52:11,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 262 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) [2024-06-14 13:52:11,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:52:11,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:52:11,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:52:11,329 INFO L124 PetriNetUnfolderBase]: 249/445 cut-off events. [2024-06-14 13:52:11,329 INFO L125 PetriNetUnfolderBase]: For 2179/2181 co-relation queries the response was YES. [2024-06-14 13:52:11,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1721 conditions, 445 events. 249/445 cut-off events. For 2179/2181 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1606 event pairs, 81 based on Foata normal form. 4/449 useless extension candidates. Maximal degree in co-relation 1693. Up to 371 conditions per place. [2024-06-14 13:52:11,332 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 39 selfloop transitions, 21 changer transitions 0/62 dead transitions. [2024-06-14 13:52:11,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 62 transitions, 459 flow [2024-06-14 13:52:11,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:52:11,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:52:11,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-14 13:52:11,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35064935064935066 [2024-06-14 13:52:11,333 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 262 flow. Second operand 7 states and 81 transitions. [2024-06-14 13:52:11,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 62 transitions, 459 flow [2024-06-14 13:52:11,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 62 transitions, 443 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-14 13:52:11,335 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 321 flow [2024-06-14 13:52:11,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=321, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2024-06-14 13:52:11,336 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 29 predicate places. [2024-06-14 13:52:11,336 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 321 flow [2024-06-14 13:52:11,336 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) [2024-06-14 13:52:11,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:52:11,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:52:11,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 13:52:11,337 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:52:11,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:52:11,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1297542121, now seen corresponding path program 3 times [2024-06-14 13:52:11,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:52:11,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313902783] [2024-06-14 13:52:11,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:52:11,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:52:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:52:14,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:52:14,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:52:14,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313902783] [2024-06-14 13:52:14,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313902783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:52:14,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:52:14,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:52:14,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711062212] [2024-06-14 13:52:14,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:52:14,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:52:14,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:52:14,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:52:14,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:52:14,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:52:14,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 321 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) [2024-06-14 13:52:14,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:52:14,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:52:14,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:52:14,625 INFO L124 PetriNetUnfolderBase]: 250/447 cut-off events. [2024-06-14 13:52:14,625 INFO L125 PetriNetUnfolderBase]: For 2696/2698 co-relation queries the response was YES. [2024-06-14 13:52:14,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1822 conditions, 447 events. 250/447 cut-off events. For 2696/2698 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1599 event pairs, 86 based on Foata normal form. 4/451 useless extension candidates. Maximal degree in co-relation 1792. Up to 395 conditions per place. [2024-06-14 13:52:14,628 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 43 selfloop transitions, 17 changer transitions 0/62 dead transitions. [2024-06-14 13:52:14,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 62 transitions, 484 flow [2024-06-14 13:52:14,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:52:14,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:52:14,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-14 13:52:14,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33766233766233766 [2024-06-14 13:52:14,629 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 321 flow. Second operand 7 states and 78 transitions. [2024-06-14 13:52:14,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 62 transitions, 484 flow [2024-06-14 13:52:14,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 62 transitions, 455 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-14 13:52:14,632 INFO L231 Difference]: Finished difference. Result has 66 places, 54 transitions, 361 flow [2024-06-14 13:52:14,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=361, PETRI_PLACES=66, PETRI_TRANSITIONS=54} [2024-06-14 13:52:14,633 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 34 predicate places. [2024-06-14 13:52:14,633 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 54 transitions, 361 flow [2024-06-14 13:52:14,633 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) [2024-06-14 13:52:14,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:52:14,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:52:14,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 13:52:14,633 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:52:14,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:52:14,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1282926175, now seen corresponding path program 1 times [2024-06-14 13:52:14,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:52:14,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993253663] [2024-06-14 13:52:14,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:52:14,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:52:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:52:19,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:52:19,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:52:19,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993253663] [2024-06-14 13:52:19,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993253663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:52:19,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:52:19,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:52:19,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886262214] [2024-06-14 13:52:19,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:52:19,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:52:19,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:52:19,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:52:19,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:52:19,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:52:19,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 361 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:19,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:52:19,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:52:19,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:52:19,817 INFO L124 PetriNetUnfolderBase]: 248/442 cut-off events. [2024-06-14 13:52:19,818 INFO L125 PetriNetUnfolderBase]: For 2983/2983 co-relation queries the response was YES. [2024-06-14 13:52:19,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1878 conditions, 442 events. 248/442 cut-off events. For 2983/2983 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1591 event pairs, 77 based on Foata normal form. 1/443 useless extension candidates. Maximal degree in co-relation 1845. Up to 421 conditions per place. [2024-06-14 13:52:19,820 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 50 selfloop transitions, 12 changer transitions 0/64 dead transitions. [2024-06-14 13:52:19,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 64 transitions, 515 flow [2024-06-14 13:52:19,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:52:19,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:52:19,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-14 13:52:19,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3068181818181818 [2024-06-14 13:52:19,822 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 361 flow. Second operand 8 states and 81 transitions. [2024-06-14 13:52:19,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 64 transitions, 515 flow [2024-06-14 13:52:19,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 64 transitions, 492 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-14 13:52:19,825 INFO L231 Difference]: Finished difference. Result has 71 places, 56 transitions, 383 flow [2024-06-14 13:52:19,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=383, PETRI_PLACES=71, PETRI_TRANSITIONS=56} [2024-06-14 13:52:19,826 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 39 predicate places. [2024-06-14 13:52:19,826 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 56 transitions, 383 flow [2024-06-14 13:52:19,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:19,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:52:19,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:52:19,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 13:52:19,827 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:52:19,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:52:19,827 INFO L85 PathProgramCache]: Analyzing trace with hash 991887517, now seen corresponding path program 1 times [2024-06-14 13:52:19,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:52:19,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666843935] [2024-06-14 13:52:19,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:52:19,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:52:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:52:23,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:52:23,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:52:23,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666843935] [2024-06-14 13:52:23,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666843935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:52:23,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:52:23,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:52:23,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056150270] [2024-06-14 13:52:23,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:52:23,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:52:23,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:52:23,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:52:23,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:52:23,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:52:23,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 56 transitions, 383 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:23,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:52:23,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:52:23,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:52:24,109 INFO L124 PetriNetUnfolderBase]: 254/452 cut-off events. [2024-06-14 13:52:24,109 INFO L125 PetriNetUnfolderBase]: For 3484/3484 co-relation queries the response was YES. [2024-06-14 13:52:24,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1972 conditions, 452 events. 254/452 cut-off events. For 3484/3484 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1617 event pairs, 55 based on Foata normal form. 2/454 useless extension candidates. Maximal degree in co-relation 1938. Up to 399 conditions per place. [2024-06-14 13:52:24,112 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 60 selfloop transitions, 11 changer transitions 0/73 dead transitions. [2024-06-14 13:52:24,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 73 transitions, 571 flow [2024-06-14 13:52:24,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:52:24,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:52:24,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-14 13:52:24,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.354978354978355 [2024-06-14 13:52:24,114 INFO L175 Difference]: Start difference. First operand has 71 places, 56 transitions, 383 flow. Second operand 7 states and 82 transitions. [2024-06-14 13:52:24,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 73 transitions, 571 flow [2024-06-14 13:52:24,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 73 transitions, 542 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 13:52:24,121 INFO L231 Difference]: Finished difference. Result has 72 places, 58 transitions, 395 flow [2024-06-14 13:52:24,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=395, PETRI_PLACES=72, PETRI_TRANSITIONS=58} [2024-06-14 13:52:24,122 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 40 predicate places. [2024-06-14 13:52:24,122 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 395 flow [2024-06-14 13:52:24,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:24,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:52:24,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:52:24,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 13:52:24,123 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:52:24,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:52:24,123 INFO L85 PathProgramCache]: Analyzing trace with hash 992007673, now seen corresponding path program 1 times [2024-06-14 13:52:24,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:52:24,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975752765] [2024-06-14 13:52:24,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:52:24,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:52:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:52:27,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:52:27,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:52:27,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975752765] [2024-06-14 13:52:27,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975752765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:52:27,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:52:27,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:52:27,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822300830] [2024-06-14 13:52:27,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:52:27,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:52:27,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:52:27,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:52:27,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:52:27,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:52:27,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 58 transitions, 395 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:27,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:52:27,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:52:27,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:52:27,903 INFO L124 PetriNetUnfolderBase]: 257/457 cut-off events. [2024-06-14 13:52:27,903 INFO L125 PetriNetUnfolderBase]: For 3994/3994 co-relation queries the response was YES. [2024-06-14 13:52:27,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2080 conditions, 457 events. 257/457 cut-off events. For 3994/3994 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1656 event pairs, 75 based on Foata normal form. 1/458 useless extension candidates. Maximal degree in co-relation 2045. Up to 404 conditions per place. [2024-06-14 13:52:27,906 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 51 selfloop transitions, 18 changer transitions 0/71 dead transitions. [2024-06-14 13:52:27,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 71 transitions, 581 flow [2024-06-14 13:52:27,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:52:27,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:52:27,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-14 13:52:27,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35064935064935066 [2024-06-14 13:52:27,907 INFO L175 Difference]: Start difference. First operand has 72 places, 58 transitions, 395 flow. Second operand 7 states and 81 transitions. [2024-06-14 13:52:27,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 71 transitions, 581 flow [2024-06-14 13:52:27,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 71 transitions, 556 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-14 13:52:27,911 INFO L231 Difference]: Finished difference. Result has 74 places, 60 transitions, 436 flow [2024-06-14 13:52:27,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=436, PETRI_PLACES=74, PETRI_TRANSITIONS=60} [2024-06-14 13:52:27,911 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 42 predicate places. [2024-06-14 13:52:27,911 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 60 transitions, 436 flow [2024-06-14 13:52:27,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:27,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:52:27,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:52:27,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 13:52:27,912 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:52:27,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:52:27,912 INFO L85 PathProgramCache]: Analyzing trace with hash 992007487, now seen corresponding path program 2 times [2024-06-14 13:52:27,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:52:27,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112820292] [2024-06-14 13:52:27,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:52:27,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:52:27,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:52:31,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:52:31,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:52:31,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112820292] [2024-06-14 13:52:31,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112820292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:52:31,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:52:31,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:52:31,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317312953] [2024-06-14 13:52:31,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:52:31,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:52:31,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:52:31,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:52:31,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:52:31,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:52:31,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 60 transitions, 436 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:31,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:52:31,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:52:31,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:52:32,096 INFO L124 PetriNetUnfolderBase]: 263/467 cut-off events. [2024-06-14 13:52:32,096 INFO L125 PetriNetUnfolderBase]: For 4714/4714 co-relation queries the response was YES. [2024-06-14 13:52:32,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2178 conditions, 467 events. 263/467 cut-off events. For 4714/4714 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1681 event pairs, 55 based on Foata normal form. 2/469 useless extension candidates. Maximal degree in co-relation 2142. Up to 382 conditions per place. [2024-06-14 13:52:32,099 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 56 selfloop transitions, 20 changer transitions 0/78 dead transitions. [2024-06-14 13:52:32,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 78 transitions, 676 flow [2024-06-14 13:52:32,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:52:32,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:52:32,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-14 13:52:32,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3722943722943723 [2024-06-14 13:52:32,102 INFO L175 Difference]: Start difference. First operand has 74 places, 60 transitions, 436 flow. Second operand 7 states and 86 transitions. [2024-06-14 13:52:32,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 78 transitions, 676 flow [2024-06-14 13:52:32,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 78 transitions, 640 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-14 13:52:32,107 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 477 flow [2024-06-14 13:52:32,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=477, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2024-06-14 13:52:32,108 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 44 predicate places. [2024-06-14 13:52:32,109 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 477 flow [2024-06-14 13:52:32,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:32,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:52:32,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:52:32,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 13:52:32,109 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:52:32,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:52:32,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1799378955, now seen corresponding path program 1 times [2024-06-14 13:52:32,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:52:32,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653647984] [2024-06-14 13:52:32,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:52:32,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:52:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:52:35,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:52:35,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:52:35,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653647984] [2024-06-14 13:52:35,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653647984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:52:35,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:52:35,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:52:35,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678403072] [2024-06-14 13:52:35,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:52:35,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:52:35,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:52:35,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:52:35,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:52:35,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:52:35,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 477 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:35,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:52:35,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:52:35,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:52:36,351 INFO L124 PetriNetUnfolderBase]: 269/478 cut-off events. [2024-06-14 13:52:36,352 INFO L125 PetriNetUnfolderBase]: For 5473/5475 co-relation queries the response was YES. [2024-06-14 13:52:36,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2297 conditions, 478 events. 269/478 cut-off events. For 5473/5475 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1757 event pairs, 80 based on Foata normal form. 4/482 useless extension candidates. Maximal degree in co-relation 2260. Up to 419 conditions per place. [2024-06-14 13:52:36,355 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 57 selfloop transitions, 20 changer transitions 0/79 dead transitions. [2024-06-14 13:52:36,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 79 transitions, 681 flow [2024-06-14 13:52:36,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:52:36,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:52:36,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-14 13:52:36,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3371212121212121 [2024-06-14 13:52:36,356 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 477 flow. Second operand 8 states and 89 transitions. [2024-06-14 13:52:36,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 79 transitions, 681 flow [2024-06-14 13:52:36,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 79 transitions, 657 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-14 13:52:36,362 INFO L231 Difference]: Finished difference. Result has 81 places, 66 transitions, 514 flow [2024-06-14 13:52:36,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=514, PETRI_PLACES=81, PETRI_TRANSITIONS=66} [2024-06-14 13:52:36,363 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 49 predicate places. [2024-06-14 13:52:36,363 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 66 transitions, 514 flow [2024-06-14 13:52:36,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:36,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:52:36,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:52:36,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 13:52:36,365 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:52:36,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:52:36,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1004551139, now seen corresponding path program 2 times [2024-06-14 13:52:36,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:52:36,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167287420] [2024-06-14 13:52:36,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:52:36,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:52:36,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:52:40,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:52:40,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:52:40,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167287420] [2024-06-14 13:52:40,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167287420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:52:40,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:52:40,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:52:40,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045817833] [2024-06-14 13:52:40,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:52:40,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:52:40,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:52:40,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:52:40,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:52:40,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:52:40,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 66 transitions, 514 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:40,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:52:40,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:52:40,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:52:40,496 INFO L124 PetriNetUnfolderBase]: 275/489 cut-off events. [2024-06-14 13:52:40,497 INFO L125 PetriNetUnfolderBase]: For 6156/6158 co-relation queries the response was YES. [2024-06-14 13:52:40,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2446 conditions, 489 events. 275/489 cut-off events. For 6156/6158 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1791 event pairs, 83 based on Foata normal form. 4/493 useless extension candidates. Maximal degree in co-relation 2407. Up to 429 conditions per place. [2024-06-14 13:52:40,505 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 57 selfloop transitions, 19 changer transitions 0/78 dead transitions. [2024-06-14 13:52:40,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 78 transitions, 712 flow [2024-06-14 13:52:40,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:52:40,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:52:40,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-14 13:52:40,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-14 13:52:40,506 INFO L175 Difference]: Start difference. First operand has 81 places, 66 transitions, 514 flow. Second operand 8 states and 87 transitions. [2024-06-14 13:52:40,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 78 transitions, 712 flow [2024-06-14 13:52:40,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 78 transitions, 667 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 13:52:40,512 INFO L231 Difference]: Finished difference. Result has 83 places, 68 transitions, 532 flow [2024-06-14 13:52:40,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=532, PETRI_PLACES=83, PETRI_TRANSITIONS=68} [2024-06-14 13:52:40,513 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 51 predicate places. [2024-06-14 13:52:40,513 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 68 transitions, 532 flow [2024-06-14 13:52:40,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:40,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:52:40,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:52:40,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 13:52:40,513 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:52:40,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:52:40,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1560528341, now seen corresponding path program 3 times [2024-06-14 13:52:40,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:52:40,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718022086] [2024-06-14 13:52:40,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:52:40,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:52:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:52:43,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:52:43,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:52:43,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718022086] [2024-06-14 13:52:43,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718022086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:52:43,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:52:43,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:52:43,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800167189] [2024-06-14 13:52:43,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:52:43,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:52:43,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:52:43,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:52:43,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:52:43,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:52:43,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 68 transitions, 532 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:43,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:52:43,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:52:43,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:52:44,292 INFO L124 PetriNetUnfolderBase]: 281/497 cut-off events. [2024-06-14 13:52:44,292 INFO L125 PetriNetUnfolderBase]: For 6826/6826 co-relation queries the response was YES. [2024-06-14 13:52:44,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2558 conditions, 497 events. 281/497 cut-off events. For 6826/6826 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1825 event pairs, 77 based on Foata normal form. 2/499 useless extension candidates. Maximal degree in co-relation 2518. Up to 473 conditions per place. [2024-06-14 13:52:44,296 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 65 selfloop transitions, 12 changer transitions 0/79 dead transitions. [2024-06-14 13:52:44,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 79 transitions, 730 flow [2024-06-14 13:52:44,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:52:44,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:52:44,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-14 13:52:44,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3106060606060606 [2024-06-14 13:52:44,297 INFO L175 Difference]: Start difference. First operand has 83 places, 68 transitions, 532 flow. Second operand 8 states and 82 transitions. [2024-06-14 13:52:44,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 79 transitions, 730 flow [2024-06-14 13:52:44,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 79 transitions, 683 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-14 13:52:44,303 INFO L231 Difference]: Finished difference. Result has 85 places, 70 transitions, 538 flow [2024-06-14 13:52:44,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=538, PETRI_PLACES=85, PETRI_TRANSITIONS=70} [2024-06-14 13:52:44,304 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 53 predicate places. [2024-06-14 13:52:44,304 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 70 transitions, 538 flow [2024-06-14 13:52:44,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:44,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:52:44,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:52:44,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 13:52:44,305 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:52:44,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:52:44,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1115699107, now seen corresponding path program 4 times [2024-06-14 13:52:44,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:52:44,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571581960] [2024-06-14 13:52:44,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:52:44,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:52:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:52:48,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:52:48,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:52:48,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571581960] [2024-06-14 13:52:48,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571581960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:52:48,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:52:48,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:52:48,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390613179] [2024-06-14 13:52:48,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:52:48,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:52:48,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:52:48,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:52:48,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:52:48,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:52:48,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 70 transitions, 538 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:48,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:52:48,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:52:48,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:52:48,432 INFO L124 PetriNetUnfolderBase]: 282/501 cut-off events. [2024-06-14 13:52:48,432 INFO L125 PetriNetUnfolderBase]: For 7563/7565 co-relation queries the response was YES. [2024-06-14 13:52:48,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2614 conditions, 501 events. 282/501 cut-off events. For 7563/7565 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1858 event pairs, 81 based on Foata normal form. 4/505 useless extension candidates. Maximal degree in co-relation 2573. Up to 387 conditions per place. [2024-06-14 13:52:48,435 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 52 selfloop transitions, 32 changer transitions 0/86 dead transitions. [2024-06-14 13:52:48,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 86 transitions, 828 flow [2024-06-14 13:52:48,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:52:48,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:52:48,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-14 13:52:48,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-14 13:52:48,436 INFO L175 Difference]: Start difference. First operand has 85 places, 70 transitions, 538 flow. Second operand 8 states and 92 transitions. [2024-06-14 13:52:48,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 86 transitions, 828 flow [2024-06-14 13:52:48,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 86 transitions, 791 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 13:52:48,442 INFO L231 Difference]: Finished difference. Result has 87 places, 74 transitions, 622 flow [2024-06-14 13:52:48,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=622, PETRI_PLACES=87, PETRI_TRANSITIONS=74} [2024-06-14 13:52:48,442 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 55 predicate places. [2024-06-14 13:52:48,442 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 74 transitions, 622 flow [2024-06-14 13:52:48,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:48,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:52:48,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:52:48,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 13:52:48,443 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:52:48,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:52:48,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1107418139, now seen corresponding path program 2 times [2024-06-14 13:52:48,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:52:48,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22797782] [2024-06-14 13:52:48,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:52:48,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:52:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:52:51,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:52:51,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:52:51,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22797782] [2024-06-14 13:52:51,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22797782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:52:51,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:52:51,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:52:51,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976603571] [2024-06-14 13:52:51,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:52:51,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:52:51,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:52:51,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:52:51,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:52:51,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:52:51,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 74 transitions, 622 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:51,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:52:51,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:52:51,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:52:52,180 INFO L124 PetriNetUnfolderBase]: 280/498 cut-off events. [2024-06-14 13:52:52,180 INFO L125 PetriNetUnfolderBase]: For 8079/8081 co-relation queries the response was YES. [2024-06-14 13:52:52,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2682 conditions, 498 events. 280/498 cut-off events. For 8079/8081 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1844 event pairs, 85 based on Foata normal form. 3/501 useless extension candidates. Maximal degree in co-relation 2640. Up to 443 conditions per place. [2024-06-14 13:52:52,184 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 62 selfloop transitions, 18 changer transitions 0/82 dead transitions. [2024-06-14 13:52:52,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 82 transitions, 804 flow [2024-06-14 13:52:52,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:52:52,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:52:52,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-14 13:52:52,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.341991341991342 [2024-06-14 13:52:52,185 INFO L175 Difference]: Start difference. First operand has 87 places, 74 transitions, 622 flow. Second operand 7 states and 79 transitions. [2024-06-14 13:52:52,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 82 transitions, 804 flow [2024-06-14 13:52:52,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 82 transitions, 759 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-14 13:52:52,193 INFO L231 Difference]: Finished difference. Result has 90 places, 74 transitions, 621 flow [2024-06-14 13:52:52,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=621, PETRI_PLACES=90, PETRI_TRANSITIONS=74} [2024-06-14 13:52:52,193 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 58 predicate places. [2024-06-14 13:52:52,193 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 74 transitions, 621 flow [2024-06-14 13:52:52,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:52,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:52:52,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:52:52,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 13:52:52,194 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:52:52,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:52:52,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1107417953, now seen corresponding path program 3 times [2024-06-14 13:52:52,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:52:52,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017075506] [2024-06-14 13:52:52,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:52:52,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:52:52,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:52:55,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:52:55,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:52:55,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017075506] [2024-06-14 13:52:55,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017075506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:52:55,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:52:55,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:52:55,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782880272] [2024-06-14 13:52:55,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:52:55,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:52:55,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:52:55,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:52:55,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:52:56,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:52:56,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 74 transitions, 621 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:56,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:52:56,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:52:56,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:52:56,443 INFO L124 PetriNetUnfolderBase]: 276/492 cut-off events. [2024-06-14 13:52:56,443 INFO L125 PetriNetUnfolderBase]: For 8592/8594 co-relation queries the response was YES. [2024-06-14 13:52:56,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2667 conditions, 492 events. 276/492 cut-off events. For 8592/8594 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1823 event pairs, 74 based on Foata normal form. 2/494 useless extension candidates. Maximal degree in co-relation 2623. Up to 408 conditions per place. [2024-06-14 13:52:56,446 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 62 selfloop transitions, 20 changer transitions 0/84 dead transitions. [2024-06-14 13:52:56,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 84 transitions, 807 flow [2024-06-14 13:52:56,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:52:56,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:52:56,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-14 13:52:56,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3593073593073593 [2024-06-14 13:52:56,448 INFO L175 Difference]: Start difference. First operand has 90 places, 74 transitions, 621 flow. Second operand 7 states and 83 transitions. [2024-06-14 13:52:56,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 84 transitions, 807 flow [2024-06-14 13:52:56,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 84 transitions, 744 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-14 13:52:56,455 INFO L231 Difference]: Finished difference. Result has 91 places, 74 transitions, 603 flow [2024-06-14 13:52:56,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=603, PETRI_PLACES=91, PETRI_TRANSITIONS=74} [2024-06-14 13:52:56,456 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 59 predicate places. [2024-06-14 13:52:56,456 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 74 transitions, 603 flow [2024-06-14 13:52:56,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:56,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:52:56,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:52:56,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 13:52:56,457 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:52:56,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:52:56,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1116006689, now seen corresponding path program 1 times [2024-06-14 13:52:56,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:52:56,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202291171] [2024-06-14 13:52:56,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:52:56,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:52:56,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:53:01,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:53:01,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:53:01,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202291171] [2024-06-14 13:53:01,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202291171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:53:01,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:53:01,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:53:01,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029894857] [2024-06-14 13:53:01,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:53:01,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:53:01,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:53:01,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:53:01,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:53:02,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:53:02,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 74 transitions, 603 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) [2024-06-14 13:53:02,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:53:02,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:53:02,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:53:02,566 INFO L124 PetriNetUnfolderBase]: 274/487 cut-off events. [2024-06-14 13:53:02,566 INFO L125 PetriNetUnfolderBase]: For 8099/8099 co-relation queries the response was YES. [2024-06-14 13:53:02,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2625 conditions, 487 events. 274/487 cut-off events. For 8099/8099 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1803 event pairs, 77 based on Foata normal form. 1/488 useless extension candidates. Maximal degree in co-relation 2580. Up to 463 conditions per place. [2024-06-14 13:53:02,570 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 69 selfloop transitions, 14 changer transitions 0/85 dead transitions. [2024-06-14 13:53:02,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 85 transitions, 803 flow [2024-06-14 13:53:02,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:53:02,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:53:02,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-14 13:53:02,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2996632996632997 [2024-06-14 13:53:02,571 INFO L175 Difference]: Start difference. First operand has 91 places, 74 transitions, 603 flow. Second operand 9 states and 89 transitions. [2024-06-14 13:53:02,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 85 transitions, 803 flow [2024-06-14 13:53:02,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 85 transitions, 752 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-14 13:53:02,577 INFO L231 Difference]: Finished difference. Result has 94 places, 76 transitions, 603 flow [2024-06-14 13:53:02,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=603, PETRI_PLACES=94, PETRI_TRANSITIONS=76} [2024-06-14 13:53:02,578 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 62 predicate places. [2024-06-14 13:53:02,578 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 76 transitions, 603 flow [2024-06-14 13:53:02,578 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) [2024-06-14 13:53:02,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:53:02,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:53:02,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 13:53:02,579 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:53:02,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:53:02,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1202850814, now seen corresponding path program 1 times [2024-06-14 13:53:02,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:53:02,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462231857] [2024-06-14 13:53:02,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:53:02,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:53:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:53:05,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:53:05,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:53:05,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462231857] [2024-06-14 13:53:05,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462231857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:53:05,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:53:05,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:53:05,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50912298] [2024-06-14 13:53:05,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:53:05,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:53:05,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:53:05,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:53:05,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:53:05,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:53:05,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 76 transitions, 603 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) [2024-06-14 13:53:05,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:53:05,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:53:05,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:53:06,264 INFO L124 PetriNetUnfolderBase]: 302/539 cut-off events. [2024-06-14 13:53:06,264 INFO L125 PetriNetUnfolderBase]: For 8926/8926 co-relation queries the response was YES. [2024-06-14 13:53:06,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2854 conditions, 539 events. 302/539 cut-off events. For 8926/8926 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2066 event pairs, 61 based on Foata normal form. 2/541 useless extension candidates. Maximal degree in co-relation 2808. Up to 459 conditions per place. [2024-06-14 13:53:06,267 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 83 selfloop transitions, 20 changer transitions 0/105 dead transitions. [2024-06-14 13:53:06,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 105 transitions, 952 flow [2024-06-14 13:53:06,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:53:06,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:53:06,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-14 13:53:06,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3400673400673401 [2024-06-14 13:53:06,268 INFO L175 Difference]: Start difference. First operand has 94 places, 76 transitions, 603 flow. Second operand 9 states and 101 transitions. [2024-06-14 13:53:06,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 105 transitions, 952 flow [2024-06-14 13:53:06,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 105 transitions, 915 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-14 13:53:06,277 INFO L231 Difference]: Finished difference. Result has 100 places, 89 transitions, 734 flow [2024-06-14 13:53:06,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=734, PETRI_PLACES=100, PETRI_TRANSITIONS=89} [2024-06-14 13:53:06,278 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 68 predicate places. [2024-06-14 13:53:06,278 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 89 transitions, 734 flow [2024-06-14 13:53:06,278 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) [2024-06-14 13:53:06,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:53:06,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:53:06,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 13:53:06,278 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:53:06,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:53:06,279 INFO L85 PathProgramCache]: Analyzing trace with hash 2072080182, now seen corresponding path program 2 times [2024-06-14 13:53:06,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:53:06,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248685175] [2024-06-14 13:53:06,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:53:06,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:53:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:53:09,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:53:09,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:53:09,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248685175] [2024-06-14 13:53:09,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248685175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:53:09,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:53:09,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:53:09,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516258833] [2024-06-14 13:53:09,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:53:09,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:53:09,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:53:09,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:53:09,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:53:09,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:53:09,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 89 transitions, 734 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) [2024-06-14 13:53:09,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:53:09,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:53:09,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:53:10,050 INFO L124 PetriNetUnfolderBase]: 325/578 cut-off events. [2024-06-14 13:53:10,050 INFO L125 PetriNetUnfolderBase]: For 9871/9873 co-relation queries the response was YES. [2024-06-14 13:53:10,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3209 conditions, 578 events. 325/578 cut-off events. For 9871/9873 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2288 event pairs, 60 based on Foata normal form. 4/582 useless extension candidates. Maximal degree in co-relation 3158. Up to 479 conditions per place. [2024-06-14 13:53:10,054 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 86 selfloop transitions, 30 changer transitions 0/118 dead transitions. [2024-06-14 13:53:10,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 118 transitions, 1101 flow [2024-06-14 13:53:10,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:53:10,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:53:10,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-14 13:53:10,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 13:53:10,056 INFO L175 Difference]: Start difference. First operand has 100 places, 89 transitions, 734 flow. Second operand 10 states and 110 transitions. [2024-06-14 13:53:10,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 118 transitions, 1101 flow [2024-06-14 13:53:10,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 118 transitions, 1071 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-14 13:53:10,067 INFO L231 Difference]: Finished difference. Result has 111 places, 100 transitions, 884 flow [2024-06-14 13:53:10,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=884, PETRI_PLACES=111, PETRI_TRANSITIONS=100} [2024-06-14 13:53:10,068 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 79 predicate places. [2024-06-14 13:53:10,068 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 100 transitions, 884 flow [2024-06-14 13:53:10,068 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) [2024-06-14 13:53:10,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:53:10,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:53:10,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 13:53:10,069 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:53:10,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:53:10,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1623255512, now seen corresponding path program 3 times [2024-06-14 13:53:10,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:53:10,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110759732] [2024-06-14 13:53:10,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:53:10,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:53:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:53:13,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:53:13,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:53:13,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110759732] [2024-06-14 13:53:13,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110759732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:53:13,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:53:13,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:53:13,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680449568] [2024-06-14 13:53:13,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:53:13,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:53:13,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:53:13,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:53:13,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:53:13,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:53:13,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 100 transitions, 884 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) [2024-06-14 13:53:13,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:53:13,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:53:13,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:53:14,083 INFO L124 PetriNetUnfolderBase]: 331/588 cut-off events. [2024-06-14 13:53:14,083 INFO L125 PetriNetUnfolderBase]: For 11211/11211 co-relation queries the response was YES. [2024-06-14 13:53:14,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3487 conditions, 588 events. 331/588 cut-off events. For 11211/11211 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2347 event pairs, 58 based on Foata normal form. 2/590 useless extension candidates. Maximal degree in co-relation 3431. Up to 501 conditions per place. [2024-06-14 13:53:14,087 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 95 selfloop transitions, 24 changer transitions 0/121 dead transitions. [2024-06-14 13:53:14,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 121 transitions, 1238 flow [2024-06-14 13:53:14,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:53:14,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:53:14,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-14 13:53:14,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3468013468013468 [2024-06-14 13:53:14,089 INFO L175 Difference]: Start difference. First operand has 111 places, 100 transitions, 884 flow. Second operand 9 states and 103 transitions. [2024-06-14 13:53:14,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 121 transitions, 1238 flow [2024-06-14 13:53:14,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 121 transitions, 1191 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-14 13:53:14,105 INFO L231 Difference]: Finished difference. Result has 118 places, 104 transitions, 959 flow [2024-06-14 13:53:14,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=959, PETRI_PLACES=118, PETRI_TRANSITIONS=104} [2024-06-14 13:53:14,105 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 86 predicate places. [2024-06-14 13:53:14,105 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 104 transitions, 959 flow [2024-06-14 13:53:14,106 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) [2024-06-14 13:53:14,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:53:14,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:53:14,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 13:53:14,107 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:53:14,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:53:14,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1619530645, now seen corresponding path program 1 times [2024-06-14 13:53:14,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:53:14,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153975174] [2024-06-14 13:53:14,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:53:14,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:53:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:53:18,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:53:18,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:53:18,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153975174] [2024-06-14 13:53:18,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153975174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:53:18,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:53:18,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:53:18,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228510657] [2024-06-14 13:53:18,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:53:18,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:53:18,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:53:18,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:53:18,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:53:18,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 13:53:18,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 104 transitions, 959 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:53:18,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:53:18,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 13:53:18,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:53:18,945 INFO L124 PetriNetUnfolderBase]: 334/593 cut-off events. [2024-06-14 13:53:18,945 INFO L125 PetriNetUnfolderBase]: For 11983/11983 co-relation queries the response was YES. [2024-06-14 13:53:18,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3644 conditions, 593 events. 334/593 cut-off events. For 11983/11983 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2382 event pairs, 88 based on Foata normal form. 1/594 useless extension candidates. Maximal degree in co-relation 3584. Up to 514 conditions per place. [2024-06-14 13:53:18,949 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 88 selfloop transitions, 27 changer transitions 0/117 dead transitions. [2024-06-14 13:53:18,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 117 transitions, 1249 flow [2024-06-14 13:53:18,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:53:18,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:53:18,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-14 13:53:18,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3712121212121212 [2024-06-14 13:53:18,952 INFO L175 Difference]: Start difference. First operand has 118 places, 104 transitions, 959 flow. Second operand 8 states and 98 transitions. [2024-06-14 13:53:18,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 117 transitions, 1249 flow [2024-06-14 13:53:18,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 117 transitions, 1191 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-14 13:53:18,966 INFO L231 Difference]: Finished difference. Result has 122 places, 106 transitions, 993 flow [2024-06-14 13:53:18,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=901, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=993, PETRI_PLACES=122, PETRI_TRANSITIONS=106} [2024-06-14 13:53:18,967 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 90 predicate places. [2024-06-14 13:53:18,967 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 106 transitions, 993 flow [2024-06-14 13:53:18,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:53:18,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:53:18,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:53:18,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 13:53:18,967 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:53:18,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:53:18,967 INFO L85 PathProgramCache]: Analyzing trace with hash -871478852, now seen corresponding path program 4 times [2024-06-14 13:53:18,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:53:18,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18833485] [2024-06-14 13:53:18,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:53:18,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:53:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:53:22,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:53:22,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:53:22,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18833485] [2024-06-14 13:53:22,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18833485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:53:22,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:53:22,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:53:22,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227921261] [2024-06-14 13:53:22,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:53:22,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:53:22,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:53:22,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:53:22,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:53:22,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:53:22,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 106 transitions, 993 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) [2024-06-14 13:53:22,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:53:22,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:53:22,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:53:22,936 INFO L124 PetriNetUnfolderBase]: 374/659 cut-off events. [2024-06-14 13:53:22,936 INFO L125 PetriNetUnfolderBase]: For 14229/14229 co-relation queries the response was YES. [2024-06-14 13:53:22,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4084 conditions, 659 events. 374/659 cut-off events. For 14229/14229 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2745 event pairs, 60 based on Foata normal form. 2/661 useless extension candidates. Maximal degree in co-relation 4023. Up to 471 conditions per place. [2024-06-14 13:53:22,940 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 89 selfloop transitions, 50 changer transitions 0/141 dead transitions. [2024-06-14 13:53:22,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 141 transitions, 1579 flow [2024-06-14 13:53:22,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:53:22,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:53:22,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-14 13:53:22,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367003367003367 [2024-06-14 13:53:22,942 INFO L175 Difference]: Start difference. First operand has 122 places, 106 transitions, 993 flow. Second operand 9 states and 109 transitions. [2024-06-14 13:53:22,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 141 transitions, 1579 flow [2024-06-14 13:53:22,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 141 transitions, 1505 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 13:53:22,957 INFO L231 Difference]: Finished difference. Result has 126 places, 120 transitions, 1212 flow [2024-06-14 13:53:22,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=931, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1212, PETRI_PLACES=126, PETRI_TRANSITIONS=120} [2024-06-14 13:53:22,957 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 94 predicate places. [2024-06-14 13:53:22,958 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 120 transitions, 1212 flow [2024-06-14 13:53:22,958 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) [2024-06-14 13:53:22,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:53:22,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:53:22,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 13:53:22,958 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:53:22,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:53:22,958 INFO L85 PathProgramCache]: Analyzing trace with hash -871484432, now seen corresponding path program 5 times [2024-06-14 13:53:22,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:53:22,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718126274] [2024-06-14 13:53:22,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:53:22,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:53:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:53:26,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:53:26,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:53:26,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718126274] [2024-06-14 13:53:26,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718126274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:53:26,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:53:26,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:53:26,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394271276] [2024-06-14 13:53:26,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:53:26,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:53:26,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:53:26,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:53:26,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:53:26,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:53:26,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 120 transitions, 1212 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) [2024-06-14 13:53:26,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:53:26,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:53:26,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:53:26,829 INFO L124 PetriNetUnfolderBase]: 375/661 cut-off events. [2024-06-14 13:53:26,829 INFO L125 PetriNetUnfolderBase]: For 15326/15326 co-relation queries the response was YES. [2024-06-14 13:53:26,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4255 conditions, 661 events. 375/661 cut-off events. For 15326/15326 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2745 event pairs, 62 based on Foata normal form. 2/663 useless extension candidates. Maximal degree in co-relation 4192. Up to 511 conditions per place. [2024-06-14 13:53:26,834 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 97 selfloop transitions, 41 changer transitions 0/140 dead transitions. [2024-06-14 13:53:26,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 140 transitions, 1605 flow [2024-06-14 13:53:26,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:53:26,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:53:26,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-14 13:53:26,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3569023569023569 [2024-06-14 13:53:26,835 INFO L175 Difference]: Start difference. First operand has 126 places, 120 transitions, 1212 flow. Second operand 9 states and 106 transitions. [2024-06-14 13:53:26,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 140 transitions, 1605 flow [2024-06-14 13:53:26,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 140 transitions, 1562 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-14 13:53:26,853 INFO L231 Difference]: Finished difference. Result has 133 places, 123 transitions, 1320 flow [2024-06-14 13:53:26,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1171, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1320, PETRI_PLACES=133, PETRI_TRANSITIONS=123} [2024-06-14 13:53:26,854 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 101 predicate places. [2024-06-14 13:53:26,854 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 123 transitions, 1320 flow [2024-06-14 13:53:26,854 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) [2024-06-14 13:53:26,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:53:26,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:53:26,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 13:53:26,855 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:53:26,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:53:26,855 INFO L85 PathProgramCache]: Analyzing trace with hash 771282366, now seen corresponding path program 1 times [2024-06-14 13:53:26,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:53:26,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482572163] [2024-06-14 13:53:26,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:53:26,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:53:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:53:31,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:53:31,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:53:31,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482572163] [2024-06-14 13:53:31,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482572163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:53:31,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:53:31,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:53:31,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392817768] [2024-06-14 13:53:31,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:53:31,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:53:31,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:53:31,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:53:31,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:53:31,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 13:53:31,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 123 transitions, 1320 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:53:31,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:53:31,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 13:53:31,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:53:32,331 INFO L124 PetriNetUnfolderBase]: 391/688 cut-off events. [2024-06-14 13:53:32,331 INFO L125 PetriNetUnfolderBase]: For 17665/17665 co-relation queries the response was YES. [2024-06-14 13:53:32,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4549 conditions, 688 events. 391/688 cut-off events. For 17665/17665 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2898 event pairs, 92 based on Foata normal form. 2/690 useless extension candidates. Maximal degree in co-relation 4483. Up to 581 conditions per place. [2024-06-14 13:53:32,335 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 107 selfloop transitions, 33 changer transitions 0/142 dead transitions. [2024-06-14 13:53:32,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 142 transitions, 1753 flow [2024-06-14 13:53:32,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:53:32,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:53:32,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-14 13:53:32,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367003367003367 [2024-06-14 13:53:32,345 INFO L175 Difference]: Start difference. First operand has 133 places, 123 transitions, 1320 flow. Second operand 9 states and 109 transitions. [2024-06-14 13:53:32,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 142 transitions, 1753 flow [2024-06-14 13:53:32,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 142 transitions, 1648 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-14 13:53:32,367 INFO L231 Difference]: Finished difference. Result has 137 places, 127 transitions, 1341 flow [2024-06-14 13:53:32,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1217, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1341, PETRI_PLACES=137, PETRI_TRANSITIONS=127} [2024-06-14 13:53:32,369 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 105 predicate places. [2024-06-14 13:53:32,369 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 127 transitions, 1341 flow [2024-06-14 13:53:32,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:53:32,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:53:32,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:53:32,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 13:53:32,370 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:53:32,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:53:32,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1890173610, now seen corresponding path program 6 times [2024-06-14 13:53:32,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:53:32,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139108610] [2024-06-14 13:53:32,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:53:32,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:53:32,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:53:35,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:53:35,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:53:35,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139108610] [2024-06-14 13:53:35,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139108610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:53:35,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:53:35,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:53:35,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173791592] [2024-06-14 13:53:35,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:53:35,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:53:35,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:53:35,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:53:35,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:53:35,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:53:35,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 127 transitions, 1341 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) [2024-06-14 13:53:35,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:53:35,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:53:35,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:53:36,258 INFO L124 PetriNetUnfolderBase]: 407/713 cut-off events. [2024-06-14 13:53:36,258 INFO L125 PetriNetUnfolderBase]: For 19467/19467 co-relation queries the response was YES. [2024-06-14 13:53:36,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4841 conditions, 713 events. 407/713 cut-off events. For 19467/19467 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3017 event pairs, 66 based on Foata normal form. 2/715 useless extension candidates. Maximal degree in co-relation 4773. Up to 488 conditions per place. [2024-06-14 13:53:36,263 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 81 selfloop transitions, 63 changer transitions 0/146 dead transitions. [2024-06-14 13:53:36,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 146 transitions, 1811 flow [2024-06-14 13:53:36,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:53:36,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:53:36,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-14 13:53:36,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36742424242424243 [2024-06-14 13:53:36,264 INFO L175 Difference]: Start difference. First operand has 137 places, 127 transitions, 1341 flow. Second operand 8 states and 97 transitions. [2024-06-14 13:53:36,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 146 transitions, 1811 flow [2024-06-14 13:53:36,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 146 transitions, 1753 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-14 13:53:36,287 INFO L231 Difference]: Finished difference. Result has 140 places, 131 transitions, 1487 flow [2024-06-14 13:53:36,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1283, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1487, PETRI_PLACES=140, PETRI_TRANSITIONS=131} [2024-06-14 13:53:36,288 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 108 predicate places. [2024-06-14 13:53:36,288 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 131 transitions, 1487 flow [2024-06-14 13:53:36,288 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) [2024-06-14 13:53:36,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:53:36,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:53:36,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 13:53:36,288 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:53:36,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:53:36,289 INFO L85 PathProgramCache]: Analyzing trace with hash 804764776, now seen corresponding path program 7 times [2024-06-14 13:53:36,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:53:36,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430849652] [2024-06-14 13:53:36,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:53:36,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:53:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:53:39,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:53:39,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:53:39,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430849652] [2024-06-14 13:53:39,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430849652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:53:39,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:53:39,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:53:39,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364790934] [2024-06-14 13:53:39,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:53:39,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:53:39,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:53:39,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:53:39,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:53:39,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:53:39,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 131 transitions, 1487 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) [2024-06-14 13:53:39,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:53:39,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:53:39,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:53:39,963 INFO L124 PetriNetUnfolderBase]: 408/715 cut-off events. [2024-06-14 13:53:39,963 INFO L125 PetriNetUnfolderBase]: For 20715/20715 co-relation queries the response was YES. [2024-06-14 13:53:39,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5037 conditions, 715 events. 408/715 cut-off events. For 20715/20715 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3014 event pairs, 73 based on Foata normal form. 2/717 useless extension candidates. Maximal degree in co-relation 4967. Up to 557 conditions per place. [2024-06-14 13:53:39,968 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 98 selfloop transitions, 45 changer transitions 0/145 dead transitions. [2024-06-14 13:53:39,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 145 transitions, 1855 flow [2024-06-14 13:53:39,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:53:39,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:53:39,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-14 13:53:39,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560606060606061 [2024-06-14 13:53:39,969 INFO L175 Difference]: Start difference. First operand has 140 places, 131 transitions, 1487 flow. Second operand 8 states and 94 transitions. [2024-06-14 13:53:39,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 145 transitions, 1855 flow [2024-06-14 13:53:39,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 145 transitions, 1767 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-14 13:53:39,998 INFO L231 Difference]: Finished difference. Result has 143 places, 133 transitions, 1537 flow [2024-06-14 13:53:39,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1401, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1537, PETRI_PLACES=143, PETRI_TRANSITIONS=133} [2024-06-14 13:53:39,998 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 111 predicate places. [2024-06-14 13:53:39,999 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 133 transitions, 1537 flow [2024-06-14 13:53:39,999 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) [2024-06-14 13:53:39,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:53:39,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:53:39,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 13:53:39,999 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:53:39,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:53:39,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1332807708, now seen corresponding path program 8 times [2024-06-14 13:53:39,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:53:39,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062395906] [2024-06-14 13:53:39,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:53:40,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:53:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:53:43,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:53:43,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:53:43,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062395906] [2024-06-14 13:53:43,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062395906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:53:43,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:53:43,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:53:43,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190354708] [2024-06-14 13:53:43,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:53:43,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:53:43,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:53:43,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:53:43,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:53:43,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:53:43,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 133 transitions, 1537 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) [2024-06-14 13:53:43,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:53:43,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:53:43,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:53:43,829 INFO L124 PetriNetUnfolderBase]: 414/725 cut-off events. [2024-06-14 13:53:43,829 INFO L125 PetriNetUnfolderBase]: For 20471/20471 co-relation queries the response was YES. [2024-06-14 13:53:43,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5132 conditions, 725 events. 414/725 cut-off events. For 20471/20471 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3074 event pairs, 68 based on Foata normal form. 2/727 useless extension candidates. Maximal degree in co-relation 5061. Up to 462 conditions per place. [2024-06-14 13:53:43,834 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 79 selfloop transitions, 72 changer transitions 0/153 dead transitions. [2024-06-14 13:53:43,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 153 transitions, 2038 flow [2024-06-14 13:53:43,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:53:43,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:53:43,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-14 13:53:43,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3569023569023569 [2024-06-14 13:53:43,835 INFO L175 Difference]: Start difference. First operand has 143 places, 133 transitions, 1537 flow. Second operand 9 states and 106 transitions. [2024-06-14 13:53:43,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 153 transitions, 2038 flow [2024-06-14 13:53:43,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 153 transitions, 1932 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-14 13:53:43,860 INFO L231 Difference]: Finished difference. Result has 146 places, 137 transitions, 1648 flow [2024-06-14 13:53:43,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1431, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1648, PETRI_PLACES=146, PETRI_TRANSITIONS=137} [2024-06-14 13:53:43,861 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 114 predicate places. [2024-06-14 13:53:43,861 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 137 transitions, 1648 flow [2024-06-14 13:53:43,861 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) [2024-06-14 13:53:43,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:53:43,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:53:43,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 13:53:43,862 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:53:43,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:53:43,862 INFO L85 PathProgramCache]: Analyzing trace with hash -29775410, now seen corresponding path program 9 times [2024-06-14 13:53:43,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:53:43,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868871220] [2024-06-14 13:53:43,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:53:43,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:53:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:53:47,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:53:47,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:53:47,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868871220] [2024-06-14 13:53:47,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868871220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:53:47,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:53:47,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:53:47,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436589490] [2024-06-14 13:53:47,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:53:47,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:53:47,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:53:47,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:53:47,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:53:47,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:53:47,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 137 transitions, 1648 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) [2024-06-14 13:53:47,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:53:47,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:53:47,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:53:47,621 INFO L124 PetriNetUnfolderBase]: 420/735 cut-off events. [2024-06-14 13:53:47,621 INFO L125 PetriNetUnfolderBase]: For 21979/21979 co-relation queries the response was YES. [2024-06-14 13:53:47,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5330 conditions, 735 events. 420/735 cut-off events. For 21979/21979 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3146 event pairs, 76 based on Foata normal form. 2/737 useless extension candidates. Maximal degree in co-relation 5258. Up to 565 conditions per place. [2024-06-14 13:53:47,625 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 104 selfloop transitions, 49 changer transitions 0/155 dead transitions. [2024-06-14 13:53:47,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 155 transitions, 2129 flow [2024-06-14 13:53:47,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:53:47,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:53:47,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-14 13:53:47,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602693602693603 [2024-06-14 13:53:47,637 INFO L175 Difference]: Start difference. First operand has 146 places, 137 transitions, 1648 flow. Second operand 9 states and 107 transitions. [2024-06-14 13:53:47,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 155 transitions, 2129 flow [2024-06-14 13:53:47,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 155 transitions, 2038 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-14 13:53:47,666 INFO L231 Difference]: Finished difference. Result has 150 places, 139 transitions, 1697 flow [2024-06-14 13:53:47,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1559, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1697, PETRI_PLACES=150, PETRI_TRANSITIONS=139} [2024-06-14 13:53:47,667 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 118 predicate places. [2024-06-14 13:53:47,667 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 139 transitions, 1697 flow [2024-06-14 13:53:47,667 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) [2024-06-14 13:53:47,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:53:47,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:53:47,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 13:53:47,668 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:53:47,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:53:47,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1891205620, now seen corresponding path program 2 times [2024-06-14 13:53:47,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:53:47,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426394122] [2024-06-14 13:53:47,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:53:47,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:53:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:53:51,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:53:51,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:53:51,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426394122] [2024-06-14 13:53:51,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426394122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:53:51,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:53:51,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:53:51,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120827807] [2024-06-14 13:53:51,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:53:51,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:53:51,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:53:51,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:53:51,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:53:51,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:53:51,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 139 transitions, 1697 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) [2024-06-14 13:53:51,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:53:51,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:53:51,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:53:52,253 INFO L124 PetriNetUnfolderBase]: 442/771 cut-off events. [2024-06-14 13:53:52,253 INFO L125 PetriNetUnfolderBase]: For 25179/25179 co-relation queries the response was YES. [2024-06-14 13:53:52,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5637 conditions, 771 events. 442/771 cut-off events. For 25179/25179 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3339 event pairs, 162 based on Foata normal form. 4/775 useless extension candidates. Maximal degree in co-relation 5563. Up to 720 conditions per place. [2024-06-14 13:53:52,259 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 134 selfloop transitions, 20 changer transitions 0/156 dead transitions. [2024-06-14 13:53:52,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 156 transitions, 2155 flow [2024-06-14 13:53:52,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:53:52,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:53:52,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-14 13:53:52,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3090909090909091 [2024-06-14 13:53:52,260 INFO L175 Difference]: Start difference. First operand has 150 places, 139 transitions, 1697 flow. Second operand 10 states and 102 transitions. [2024-06-14 13:53:52,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 156 transitions, 2155 flow [2024-06-14 13:53:52,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 156 transitions, 1956 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-14 13:53:52,294 INFO L231 Difference]: Finished difference. Result has 152 places, 144 transitions, 1605 flow [2024-06-14 13:53:52,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1498, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1605, PETRI_PLACES=152, PETRI_TRANSITIONS=144} [2024-06-14 13:53:52,295 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 120 predicate places. [2024-06-14 13:53:52,295 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 144 transitions, 1605 flow [2024-06-14 13:53:52,295 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) [2024-06-14 13:53:52,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:53:52,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:53:52,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 13:53:52,295 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:53:52,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:53:52,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1131737418, now seen corresponding path program 3 times [2024-06-14 13:53:52,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:53:52,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131772764] [2024-06-14 13:53:52,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:53:52,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:53:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:53:56,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:53:56,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:53:56,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131772764] [2024-06-14 13:53:56,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131772764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:53:56,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:53:56,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:53:56,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549279194] [2024-06-14 13:53:56,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:53:56,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:53:56,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:53:56,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:53:56,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:53:56,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:53:56,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 144 transitions, 1605 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) [2024-06-14 13:53:56,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:53:56,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:53:56,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:53:56,847 INFO L124 PetriNetUnfolderBase]: 448/783 cut-off events. [2024-06-14 13:53:56,847 INFO L125 PetriNetUnfolderBase]: For 25389/25389 co-relation queries the response was YES. [2024-06-14 13:53:56,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5539 conditions, 783 events. 448/783 cut-off events. For 25389/25389 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3387 event pairs, 92 based on Foata normal form. 2/785 useless extension candidates. Maximal degree in co-relation 5465. Up to 543 conditions per place. [2024-06-14 13:53:56,853 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 102 selfloop transitions, 58 changer transitions 0/162 dead transitions. [2024-06-14 13:53:56,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 162 transitions, 2097 flow [2024-06-14 13:53:56,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:53:56,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:53:56,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-14 13:53:56,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3501683501683502 [2024-06-14 13:53:56,854 INFO L175 Difference]: Start difference. First operand has 152 places, 144 transitions, 1605 flow. Second operand 9 states and 104 transitions. [2024-06-14 13:53:56,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 162 transitions, 2097 flow [2024-06-14 13:53:56,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 162 transitions, 2045 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-14 13:53:56,891 INFO L231 Difference]: Finished difference. Result has 156 places, 148 transitions, 1762 flow [2024-06-14 13:53:56,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1553, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1762, PETRI_PLACES=156, PETRI_TRANSITIONS=148} [2024-06-14 13:53:56,891 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 124 predicate places. [2024-06-14 13:53:56,891 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 148 transitions, 1762 flow [2024-06-14 13:53:56,891 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) [2024-06-14 13:53:56,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:53:56,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:53:56,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 13:53:56,891 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:53:56,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:53:56,892 INFO L85 PathProgramCache]: Analyzing trace with hash 226934846, now seen corresponding path program 4 times [2024-06-14 13:53:56,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:53:56,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457874127] [2024-06-14 13:53:56,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:53:56,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:53:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:54:01,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:54:01,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:54:01,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457874127] [2024-06-14 13:54:01,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457874127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:54:01,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:54:01,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:54:01,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566434157] [2024-06-14 13:54:01,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:54:01,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:54:01,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:54:01,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:54:01,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:54:01,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:54:01,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 148 transitions, 1762 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) [2024-06-14 13:54:01,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:54:01,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:54:01,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:54:02,312 INFO L124 PetriNetUnfolderBase]: 454/791 cut-off events. [2024-06-14 13:54:02,312 INFO L125 PetriNetUnfolderBase]: For 27106/27106 co-relation queries the response was YES. [2024-06-14 13:54:02,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5815 conditions, 791 events. 454/791 cut-off events. For 27106/27106 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3437 event pairs, 99 based on Foata normal form. 2/793 useless extension candidates. Maximal degree in co-relation 5738. Up to 676 conditions per place. [2024-06-14 13:54:02,318 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 120 selfloop transitions, 40 changer transitions 0/162 dead transitions. [2024-06-14 13:54:02,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 162 transitions, 2157 flow [2024-06-14 13:54:02,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:54:02,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:54:02,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-14 13:54:02,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32996632996632996 [2024-06-14 13:54:02,320 INFO L175 Difference]: Start difference. First operand has 156 places, 148 transitions, 1762 flow. Second operand 9 states and 98 transitions. [2024-06-14 13:54:02,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 162 transitions, 2157 flow [2024-06-14 13:54:02,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 162 transitions, 2063 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-14 13:54:02,358 INFO L231 Difference]: Finished difference. Result has 160 places, 150 transitions, 1790 flow [2024-06-14 13:54:02,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1672, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1790, PETRI_PLACES=160, PETRI_TRANSITIONS=150} [2024-06-14 13:54:02,359 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 128 predicate places. [2024-06-14 13:54:02,359 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 150 transitions, 1790 flow [2024-06-14 13:54:02,359 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) [2024-06-14 13:54:02,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:54:02,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:54:02,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 13:54:02,359 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:54:02,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:54:02,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1397650024, now seen corresponding path program 10 times [2024-06-14 13:54:02,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:54:02,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021421946] [2024-06-14 13:54:02,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:54:02,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:54:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:54:05,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:54:05,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:54:05,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021421946] [2024-06-14 13:54:05,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021421946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:54:05,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:54:05,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:54:05,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053143940] [2024-06-14 13:54:05,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:54:05,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:54:05,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:54:05,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:54:05,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:54:05,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:54:05,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 150 transitions, 1790 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) [2024-06-14 13:54:05,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:54:05,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:54:05,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:54:06,189 INFO L124 PetriNetUnfolderBase]: 450/785 cut-off events. [2024-06-14 13:54:06,189 INFO L125 PetriNetUnfolderBase]: For 27027/27027 co-relation queries the response was YES. [2024-06-14 13:54:06,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5780 conditions, 785 events. 450/785 cut-off events. For 27027/27027 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3405 event pairs, 91 based on Foata normal form. 2/787 useless extension candidates. Maximal degree in co-relation 5701. Up to 635 conditions per place. [2024-06-14 13:54:06,194 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 118 selfloop transitions, 41 changer transitions 0/161 dead transitions. [2024-06-14 13:54:06,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 161 transitions, 2156 flow [2024-06-14 13:54:06,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:54:06,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:54:06,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-14 13:54:06,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-14 13:54:06,195 INFO L175 Difference]: Start difference. First operand has 160 places, 150 transitions, 1790 flow. Second operand 8 states and 92 transitions. [2024-06-14 13:54:06,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 161 transitions, 2156 flow [2024-06-14 13:54:06,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 161 transitions, 2037 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-14 13:54:06,237 INFO L231 Difference]: Finished difference. Result has 161 places, 150 transitions, 1758 flow [2024-06-14 13:54:06,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1671, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1758, PETRI_PLACES=161, PETRI_TRANSITIONS=150} [2024-06-14 13:54:06,237 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 129 predicate places. [2024-06-14 13:54:06,237 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 150 transitions, 1758 flow [2024-06-14 13:54:06,238 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) [2024-06-14 13:54:06,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:54:06,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:54:06,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 13:54:06,238 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:54:06,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:54:06,238 INFO L85 PathProgramCache]: Analyzing trace with hash -29775193, now seen corresponding path program 2 times [2024-06-14 13:54:06,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:54:06,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949206520] [2024-06-14 13:54:06,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:54:06,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:54:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:54:10,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:54:10,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:54:10,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949206520] [2024-06-14 13:54:10,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949206520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:54:10,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:54:10,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:54:10,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229722365] [2024-06-14 13:54:10,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:54:10,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:54:10,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:54:10,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:54:10,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:54:10,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:54:10,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 150 transitions, 1758 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) [2024-06-14 13:54:10,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:54:10,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:54:10,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:54:10,605 INFO L124 PetriNetUnfolderBase]: 448/782 cut-off events. [2024-06-14 13:54:10,605 INFO L125 PetriNetUnfolderBase]: For 27228/27228 co-relation queries the response was YES. [2024-06-14 13:54:10,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5728 conditions, 782 events. 448/782 cut-off events. For 27228/27228 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3382 event pairs, 110 based on Foata normal form. 1/783 useless extension candidates. Maximal degree in co-relation 5648. Up to 699 conditions per place. [2024-06-14 13:54:10,610 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 128 selfloop transitions, 29 changer transitions 0/159 dead transitions. [2024-06-14 13:54:10,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 159 transitions, 2100 flow [2024-06-14 13:54:10,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:54:10,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:54:10,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-14 13:54:10,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 13:54:10,612 INFO L175 Difference]: Start difference. First operand has 161 places, 150 transitions, 1758 flow. Second operand 8 states and 88 transitions. [2024-06-14 13:54:10,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 159 transitions, 2100 flow [2024-06-14 13:54:10,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 159 transitions, 2006 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-14 13:54:10,653 INFO L231 Difference]: Finished difference. Result has 162 places, 150 transitions, 1730 flow [2024-06-14 13:54:10,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1664, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1730, PETRI_PLACES=162, PETRI_TRANSITIONS=150} [2024-06-14 13:54:10,654 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 130 predicate places. [2024-06-14 13:54:10,654 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 150 transitions, 1730 flow [2024-06-14 13:54:10,654 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) [2024-06-14 13:54:10,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:54:10,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:54:10,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 13:54:10,654 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:54:10,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:54:10,654 INFO L85 PathProgramCache]: Analyzing trace with hash -792737108, now seen corresponding path program 5 times [2024-06-14 13:54:10,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:54:10,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419968148] [2024-06-14 13:54:10,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:54:10,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:54:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:54:15,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:54:15,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:54:15,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419968148] [2024-06-14 13:54:15,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419968148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:54:15,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:54:15,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:54:15,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935417614] [2024-06-14 13:54:15,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:54:15,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:54:15,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:54:15,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:54:15,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:54:15,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:54:15,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 150 transitions, 1730 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) [2024-06-14 13:54:15,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:54:15,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:54:15,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:54:15,685 INFO L124 PetriNetUnfolderBase]: 449/784 cut-off events. [2024-06-14 13:54:15,685 INFO L125 PetriNetUnfolderBase]: For 28419/28419 co-relation queries the response was YES. [2024-06-14 13:54:15,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5717 conditions, 784 events. 449/784 cut-off events. For 28419/28419 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3396 event pairs, 109 based on Foata normal form. 2/786 useless extension candidates. Maximal degree in co-relation 5636. Up to 699 conditions per place. [2024-06-14 13:54:15,690 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 133 selfloop transitions, 28 changer transitions 0/163 dead transitions. [2024-06-14 13:54:15,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 163 transitions, 2121 flow [2024-06-14 13:54:15,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:54:15,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:54:15,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-14 13:54:15,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32323232323232326 [2024-06-14 13:54:15,691 INFO L175 Difference]: Start difference. First operand has 162 places, 150 transitions, 1730 flow. Second operand 9 states and 96 transitions. [2024-06-14 13:54:15,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 163 transitions, 2121 flow [2024-06-14 13:54:15,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 163 transitions, 2033 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-14 13:54:15,733 INFO L231 Difference]: Finished difference. Result has 164 places, 152 transitions, 1740 flow [2024-06-14 13:54:15,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1642, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1740, PETRI_PLACES=164, PETRI_TRANSITIONS=152} [2024-06-14 13:54:15,733 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 132 predicate places. [2024-06-14 13:54:15,733 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 152 transitions, 1740 flow [2024-06-14 13:54:15,733 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) [2024-06-14 13:54:15,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:54:15,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:54:15,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 13:54:15,734 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:54:15,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:54:15,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1131399084, now seen corresponding path program 1 times [2024-06-14 13:54:15,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:54:15,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584853480] [2024-06-14 13:54:15,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:54:15,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:54:15,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:54:20,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:54:20,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:54:20,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584853480] [2024-06-14 13:54:20,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584853480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:54:20,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:54:20,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:54:20,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765772894] [2024-06-14 13:54:20,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:54:20,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:54:20,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:54:20,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:54:20,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:54:21,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:54:21,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 152 transitions, 1740 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) [2024-06-14 13:54:21,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:54:21,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:54:21,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:54:21,540 INFO L124 PetriNetUnfolderBase]: 446/779 cut-off events. [2024-06-14 13:54:21,540 INFO L125 PetriNetUnfolderBase]: For 28705/28705 co-relation queries the response was YES. [2024-06-14 13:54:21,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5668 conditions, 779 events. 446/779 cut-off events. For 28705/28705 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3357 event pairs, 168 based on Foata normal form. 2/781 useless extension candidates. Maximal degree in co-relation 5586. Up to 745 conditions per place. [2024-06-14 13:54:21,546 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 144 selfloop transitions, 16 changer transitions 0/162 dead transitions. [2024-06-14 13:54:21,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 162 transitions, 2082 flow [2024-06-14 13:54:21,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:54:21,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:54:21,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-06-14 13:54:21,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2909090909090909 [2024-06-14 13:54:21,547 INFO L175 Difference]: Start difference. First operand has 164 places, 152 transitions, 1740 flow. Second operand 10 states and 96 transitions. [2024-06-14 13:54:21,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 162 transitions, 2082 flow [2024-06-14 13:54:21,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 162 transitions, 2003 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-14 13:54:21,592 INFO L231 Difference]: Finished difference. Result has 167 places, 152 transitions, 1697 flow [2024-06-14 13:54:21,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1661, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1697, PETRI_PLACES=167, PETRI_TRANSITIONS=152} [2024-06-14 13:54:21,593 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 135 predicate places. [2024-06-14 13:54:21,593 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 152 transitions, 1697 flow [2024-06-14 13:54:21,593 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) [2024-06-14 13:54:21,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:54:21,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:54:21,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 13:54:21,594 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:54:21,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:54:21,594 INFO L85 PathProgramCache]: Analyzing trace with hash 160098906, now seen corresponding path program 1 times [2024-06-14 13:54:21,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:54:21,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420331570] [2024-06-14 13:54:21,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:54:21,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:54:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:54:25,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:54:25,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:54:25,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420331570] [2024-06-14 13:54:25,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420331570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:54:25,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:54:25,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:54:25,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086350147] [2024-06-14 13:54:25,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:54:25,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:54:25,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:54:25,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:54:25,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:54:25,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:54:25,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 152 transitions, 1697 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:54:25,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:54:25,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:54:25,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:54:26,148 INFO L124 PetriNetUnfolderBase]: 450/787 cut-off events. [2024-06-14 13:54:26,148 INFO L125 PetriNetUnfolderBase]: For 29856/29856 co-relation queries the response was YES. [2024-06-14 13:54:26,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5681 conditions, 787 events. 450/787 cut-off events. For 29856/29856 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3411 event pairs, 81 based on Foata normal form. 2/789 useless extension candidates. Maximal degree in co-relation 5598. Up to 679 conditions per place. [2024-06-14 13:54:26,153 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 138 selfloop transitions, 28 changer transitions 0/168 dead transitions. [2024-06-14 13:54:26,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 168 transitions, 2095 flow [2024-06-14 13:54:26,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:54:26,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:54:26,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-14 13:54:26,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560606060606061 [2024-06-14 13:54:26,154 INFO L175 Difference]: Start difference. First operand has 167 places, 152 transitions, 1697 flow. Second operand 8 states and 94 transitions. [2024-06-14 13:54:26,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 168 transitions, 2095 flow [2024-06-14 13:54:26,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 168 transitions, 2053 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-14 13:54:26,201 INFO L231 Difference]: Finished difference. Result has 167 places, 153 transitions, 1729 flow [2024-06-14 13:54:26,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1655, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1729, PETRI_PLACES=167, PETRI_TRANSITIONS=153} [2024-06-14 13:54:26,201 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 135 predicate places. [2024-06-14 13:54:26,201 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 153 transitions, 1729 flow [2024-06-14 13:54:26,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:54:26,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:54:26,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:54:26,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 13:54:26,202 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:54:26,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:54:26,202 INFO L85 PathProgramCache]: Analyzing trace with hash -504896664, now seen corresponding path program 2 times [2024-06-14 13:54:26,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:54:26,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315769010] [2024-06-14 13:54:26,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:54:26,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:54:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:54:30,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:54:30,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:54:30,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315769010] [2024-06-14 13:54:30,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315769010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:54:30,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:54:30,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:54:30,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373331652] [2024-06-14 13:54:30,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:54:30,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:54:30,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:54:30,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:54:30,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:54:30,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:54:30,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 153 transitions, 1729 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) [2024-06-14 13:54:30,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:54:30,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:54:30,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:54:31,156 INFO L124 PetriNetUnfolderBase]: 466/819 cut-off events. [2024-06-14 13:54:31,156 INFO L125 PetriNetUnfolderBase]: For 31561/31561 co-relation queries the response was YES. [2024-06-14 13:54:31,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5888 conditions, 819 events. 466/819 cut-off events. For 31561/31561 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3626 event pairs, 75 based on Foata normal form. 2/821 useless extension candidates. Maximal degree in co-relation 5804. Up to 711 conditions per place. [2024-06-14 13:54:31,161 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 150 selfloop transitions, 26 changer transitions 0/178 dead transitions. [2024-06-14 13:54:31,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 178 transitions, 2211 flow [2024-06-14 13:54:31,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:54:31,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:54:31,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-14 13:54:31,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-14 13:54:31,162 INFO L175 Difference]: Start difference. First operand has 167 places, 153 transitions, 1729 flow. Second operand 10 states and 112 transitions. [2024-06-14 13:54:31,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 178 transitions, 2211 flow [2024-06-14 13:54:31,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 178 transitions, 2139 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 13:54:31,213 INFO L231 Difference]: Finished difference. Result has 173 places, 158 transitions, 1790 flow [2024-06-14 13:54:31,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1669, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1790, PETRI_PLACES=173, PETRI_TRANSITIONS=158} [2024-06-14 13:54:31,214 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 141 predicate places. [2024-06-14 13:54:31,214 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 158 transitions, 1790 flow [2024-06-14 13:54:31,214 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) [2024-06-14 13:54:31,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:54:31,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:54:31,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 13:54:31,216 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:54:31,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:54:31,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1218687546, now seen corresponding path program 1 times [2024-06-14 13:54:31,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:54:31,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260334482] [2024-06-14 13:54:31,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:54:31,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:54:31,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:54:35,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:54:35,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:54:35,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260334482] [2024-06-14 13:54:35,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260334482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:54:35,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:54:35,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:54:35,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975093641] [2024-06-14 13:54:35,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:54:35,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:54:35,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:54:35,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:54:35,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:54:35,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:54:35,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 158 transitions, 1790 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) [2024-06-14 13:54:35,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:54:35,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:54:35,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:54:35,853 INFO L124 PetriNetUnfolderBase]: 472/829 cut-off events. [2024-06-14 13:54:35,853 INFO L125 PetriNetUnfolderBase]: For 32943/32943 co-relation queries the response was YES. [2024-06-14 13:54:35,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5995 conditions, 829 events. 472/829 cut-off events. For 32943/32943 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3684 event pairs, 69 based on Foata normal form. 2/831 useless extension candidates. Maximal degree in co-relation 5908. Up to 734 conditions per place. [2024-06-14 13:54:35,858 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 151 selfloop transitions, 26 changer transitions 0/179 dead transitions. [2024-06-14 13:54:35,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 179 transitions, 2253 flow [2024-06-14 13:54:35,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:54:35,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:54:35,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-14 13:54:35,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-14 13:54:35,859 INFO L175 Difference]: Start difference. First operand has 173 places, 158 transitions, 1790 flow. Second operand 10 states and 112 transitions. [2024-06-14 13:54:35,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 179 transitions, 2253 flow [2024-06-14 13:54:35,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 179 transitions, 2203 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-14 13:54:35,920 INFO L231 Difference]: Finished difference. Result has 177 places, 160 transitions, 1829 flow [2024-06-14 13:54:35,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1740, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1829, PETRI_PLACES=177, PETRI_TRANSITIONS=160} [2024-06-14 13:54:35,920 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 145 predicate places. [2024-06-14 13:54:35,921 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 160 transitions, 1829 flow [2024-06-14 13:54:35,921 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) [2024-06-14 13:54:35,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:54:35,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:54:35,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 13:54:35,921 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:54:35,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:54:35,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1218682710, now seen corresponding path program 1 times [2024-06-14 13:54:35,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:54:35,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000302993] [2024-06-14 13:54:35,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:54:35,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:54:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:54:39,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:54:39,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:54:39,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000302993] [2024-06-14 13:54:39,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000302993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:54:39,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:54:39,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:54:39,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424587723] [2024-06-14 13:54:39,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:54:39,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:54:39,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:54:39,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:54:39,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:54:39,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:54:39,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 160 transitions, 1829 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) [2024-06-14 13:54:39,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:54:39,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:54:39,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:54:40,200 INFO L124 PetriNetUnfolderBase]: 475/834 cut-off events. [2024-06-14 13:54:40,201 INFO L125 PetriNetUnfolderBase]: For 33561/33561 co-relation queries the response was YES. [2024-06-14 13:54:40,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6107 conditions, 834 events. 475/834 cut-off events. For 33561/33561 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3709 event pairs, 68 based on Foata normal form. 1/835 useless extension candidates. Maximal degree in co-relation 6019. Up to 741 conditions per place. [2024-06-14 13:54:40,206 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 150 selfloop transitions, 27 changer transitions 0/179 dead transitions. [2024-06-14 13:54:40,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 179 transitions, 2294 flow [2024-06-14 13:54:40,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:54:40,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:54:40,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-14 13:54:40,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3468013468013468 [2024-06-14 13:54:40,207 INFO L175 Difference]: Start difference. First operand has 177 places, 160 transitions, 1829 flow. Second operand 9 states and 103 transitions. [2024-06-14 13:54:40,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 179 transitions, 2294 flow [2024-06-14 13:54:40,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 179 transitions, 2221 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 13:54:40,271 INFO L231 Difference]: Finished difference. Result has 178 places, 162 transitions, 1862 flow [2024-06-14 13:54:40,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1862, PETRI_PLACES=178, PETRI_TRANSITIONS=162} [2024-06-14 13:54:40,272 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 146 predicate places. [2024-06-14 13:54:40,272 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 162 transitions, 1862 flow [2024-06-14 13:54:40,272 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) [2024-06-14 13:54:40,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:54:40,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:54:40,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 13:54:40,272 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:54:40,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:54:40,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1246039770, now seen corresponding path program 2 times [2024-06-14 13:54:40,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:54:40,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553807578] [2024-06-14 13:54:40,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:54:40,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:54:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:54:44,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:54:44,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:54:44,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553807578] [2024-06-14 13:54:44,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553807578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:54:44,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:54:44,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:54:44,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502050896] [2024-06-14 13:54:44,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:54:44,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:54:44,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:54:44,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:54:44,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:54:44,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:54:44,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 162 transitions, 1862 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) [2024-06-14 13:54:44,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:54:44,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:54:44,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:54:44,781 INFO L124 PetriNetUnfolderBase]: 481/844 cut-off events. [2024-06-14 13:54:44,781 INFO L125 PetriNetUnfolderBase]: For 36460/36460 co-relation queries the response was YES. [2024-06-14 13:54:44,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6197 conditions, 844 events. 481/844 cut-off events. For 36460/36460 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3781 event pairs, 60 based on Foata normal form. 2/846 useless extension candidates. Maximal degree in co-relation 6108. Up to 645 conditions per place. [2024-06-14 13:54:44,786 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 126 selfloop transitions, 58 changer transitions 0/186 dead transitions. [2024-06-14 13:54:44,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 186 transitions, 2444 flow [2024-06-14 13:54:44,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:54:44,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:54:44,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 13:54:44,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575757575757576 [2024-06-14 13:54:44,788 INFO L175 Difference]: Start difference. First operand has 178 places, 162 transitions, 1862 flow. Second operand 10 states and 118 transitions. [2024-06-14 13:54:44,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 186 transitions, 2444 flow [2024-06-14 13:54:44,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 186 transitions, 2374 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-14 13:54:44,852 INFO L231 Difference]: Finished difference. Result has 181 places, 164 transitions, 1949 flow [2024-06-14 13:54:44,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1792, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1949, PETRI_PLACES=181, PETRI_TRANSITIONS=164} [2024-06-14 13:54:44,852 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 149 predicate places. [2024-06-14 13:54:44,852 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 164 transitions, 1949 flow [2024-06-14 13:54:44,853 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) [2024-06-14 13:54:44,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:54:44,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:54:44,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 13:54:44,853 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:54:44,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:54:44,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1246033012, now seen corresponding path program 1 times [2024-06-14 13:54:44,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:54:44,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194034427] [2024-06-14 13:54:44,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:54:44,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:54:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:54:50,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:54:50,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:54:50,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194034427] [2024-06-14 13:54:50,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194034427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:54:50,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:54:50,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:54:50,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549363558] [2024-06-14 13:54:50,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:54:50,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:54:50,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:54:50,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:54:50,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:54:50,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:54:50,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 164 transitions, 1949 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) [2024-06-14 13:54:50,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:54:50,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:54:50,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:54:51,486 INFO L124 PetriNetUnfolderBase]: 499/874 cut-off events. [2024-06-14 13:54:51,486 INFO L125 PetriNetUnfolderBase]: For 37823/37823 co-relation queries the response was YES. [2024-06-14 13:54:51,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6501 conditions, 874 events. 499/874 cut-off events. For 37823/37823 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3971 event pairs, 103 based on Foata normal form. 1/875 useless extension candidates. Maximal degree in co-relation 6411. Up to 780 conditions per place. [2024-06-14 13:54:51,492 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 154 selfloop transitions, 33 changer transitions 0/189 dead transitions. [2024-06-14 13:54:51,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 189 transitions, 2475 flow [2024-06-14 13:54:51,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:54:51,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:54:51,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 13:54:51,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-14 13:54:51,493 INFO L175 Difference]: Start difference. First operand has 181 places, 164 transitions, 1949 flow. Second operand 10 states and 109 transitions. [2024-06-14 13:54:51,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 189 transitions, 2475 flow [2024-06-14 13:54:51,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 189 transitions, 2334 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-14 13:54:51,553 INFO L231 Difference]: Finished difference. Result has 184 places, 172 transitions, 1996 flow [2024-06-14 13:54:51,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1808, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1996, PETRI_PLACES=184, PETRI_TRANSITIONS=172} [2024-06-14 13:54:51,553 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 152 predicate places. [2024-06-14 13:54:51,553 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 172 transitions, 1996 flow [2024-06-14 13:54:51,553 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) [2024-06-14 13:54:51,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:54:51,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:54:51,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 13:54:51,553 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:54:51,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:54:51,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1246217710, now seen corresponding path program 3 times [2024-06-14 13:54:51,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:54:51,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922714197] [2024-06-14 13:54:51,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:54:51,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:54:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:54:55,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:54:55,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:54:55,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922714197] [2024-06-14 13:54:55,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922714197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:54:55,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:54:55,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:54:55,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712089530] [2024-06-14 13:54:55,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:54:55,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:54:55,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:54:55,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:54:55,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:54:55,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:54:55,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 172 transitions, 1996 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) [2024-06-14 13:54:55,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:54:55,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:54:55,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:54:56,121 INFO L124 PetriNetUnfolderBase]: 503/882 cut-off events. [2024-06-14 13:54:56,121 INFO L125 PetriNetUnfolderBase]: For 39887/39887 co-relation queries the response was YES. [2024-06-14 13:54:56,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6526 conditions, 882 events. 503/882 cut-off events. For 39887/39887 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4000 event pairs, 74 based on Foata normal form. 2/884 useless extension candidates. Maximal degree in co-relation 6434. Up to 733 conditions per place. [2024-06-14 13:54:56,127 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 146 selfloop transitions, 42 changer transitions 0/190 dead transitions. [2024-06-14 13:54:56,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 190 transitions, 2452 flow [2024-06-14 13:54:56,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:54:56,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:54:56,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-14 13:54:56,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-14 13:54:56,129 INFO L175 Difference]: Start difference. First operand has 184 places, 172 transitions, 1996 flow. Second operand 9 states and 105 transitions. [2024-06-14 13:54:56,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 190 transitions, 2452 flow [2024-06-14 13:54:56,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 190 transitions, 2364 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-14 13:54:56,198 INFO L231 Difference]: Finished difference. Result has 187 places, 173 transitions, 2012 flow [2024-06-14 13:54:56,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1908, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2012, PETRI_PLACES=187, PETRI_TRANSITIONS=173} [2024-06-14 13:54:56,198 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 155 predicate places. [2024-06-14 13:54:56,198 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 173 transitions, 2012 flow [2024-06-14 13:54:56,199 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) [2024-06-14 13:54:56,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:54:56,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:54:56,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 13:54:56,199 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:54:56,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:54:56,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1246033260, now seen corresponding path program 3 times [2024-06-14 13:54:56,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:54:56,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656914403] [2024-06-14 13:54:56,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:54:56,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:54:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:55:00,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:55:00,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:55:00,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656914403] [2024-06-14 13:55:00,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656914403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:55:00,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:55:00,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:55:00,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139696146] [2024-06-14 13:55:00,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:55:00,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:55:00,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:55:00,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:55:00,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:55:00,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:55:00,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 173 transitions, 2012 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) [2024-06-14 13:55:00,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:55:00,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:55:00,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:55:01,167 INFO L124 PetriNetUnfolderBase]: 519/908 cut-off events. [2024-06-14 13:55:01,167 INFO L125 PetriNetUnfolderBase]: For 44208/44208 co-relation queries the response was YES. [2024-06-14 13:55:01,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6828 conditions, 908 events. 519/908 cut-off events. For 44208/44208 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4158 event pairs, 65 based on Foata normal form. 2/910 useless extension candidates. Maximal degree in co-relation 6737. Up to 662 conditions per place. [2024-06-14 13:55:01,174 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 133 selfloop transitions, 66 changer transitions 0/201 dead transitions. [2024-06-14 13:55:01,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 201 transitions, 2768 flow [2024-06-14 13:55:01,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:55:01,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:55:01,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 13:55:01,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-14 13:55:01,175 INFO L175 Difference]: Start difference. First operand has 187 places, 173 transitions, 2012 flow. Second operand 10 states and 121 transitions. [2024-06-14 13:55:01,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 201 transitions, 2768 flow [2024-06-14 13:55:01,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 201 transitions, 2674 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-14 13:55:01,247 INFO L231 Difference]: Finished difference. Result has 190 places, 177 transitions, 2132 flow [2024-06-14 13:55:01,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1918, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2132, PETRI_PLACES=190, PETRI_TRANSITIONS=177} [2024-06-14 13:55:01,248 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 158 predicate places. [2024-06-14 13:55:01,248 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 177 transitions, 2132 flow [2024-06-14 13:55:01,248 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) [2024-06-14 13:55:01,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:55:01,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:55:01,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 13:55:01,248 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:55:01,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:55:01,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1333978716, now seen corresponding path program 4 times [2024-06-14 13:55:01,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:55:01,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267230177] [2024-06-14 13:55:01,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:55:01,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:55:01,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:55:05,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:55:05,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:55:05,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267230177] [2024-06-14 13:55:05,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267230177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:55:05,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:55:05,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:55:05,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211227328] [2024-06-14 13:55:05,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:55:05,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:55:05,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:55:05,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:55:05,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:55:05,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:55:05,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 177 transitions, 2132 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) [2024-06-14 13:55:05,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:55:05,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:55:05,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:55:05,628 INFO L124 PetriNetUnfolderBase]: 525/918 cut-off events. [2024-06-14 13:55:05,628 INFO L125 PetriNetUnfolderBase]: For 46327/46327 co-relation queries the response was YES. [2024-06-14 13:55:05,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7028 conditions, 918 events. 525/918 cut-off events. For 46327/46327 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4222 event pairs, 74 based on Foata normal form. 2/920 useless extension candidates. Maximal degree in co-relation 6936. Up to 759 conditions per place. [2024-06-14 13:55:05,635 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 151 selfloop transitions, 45 changer transitions 0/198 dead transitions. [2024-06-14 13:55:05,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 198 transitions, 2646 flow [2024-06-14 13:55:05,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:55:05,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:55:05,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-14 13:55:05,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-14 13:55:05,636 INFO L175 Difference]: Start difference. First operand has 190 places, 177 transitions, 2132 flow. Second operand 10 states and 115 transitions. [2024-06-14 13:55:05,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 198 transitions, 2646 flow [2024-06-14 13:55:05,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 198 transitions, 2535 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-14 13:55:05,724 INFO L231 Difference]: Finished difference. Result has 194 places, 179 transitions, 2160 flow [2024-06-14 13:55:05,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2025, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2160, PETRI_PLACES=194, PETRI_TRANSITIONS=179} [2024-06-14 13:55:05,725 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 162 predicate places. [2024-06-14 13:55:05,725 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 179 transitions, 2160 flow [2024-06-14 13:55:05,725 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) [2024-06-14 13:55:05,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:55:05,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:55:05,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 13:55:05,725 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:55:05,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:55:05,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1125197256, now seen corresponding path program 4 times [2024-06-14 13:55:05,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:55:05,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006455267] [2024-06-14 13:55:05,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:55:05,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:55:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:55:09,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:55:09,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:55:09,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006455267] [2024-06-14 13:55:09,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006455267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:55:09,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:55:09,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:55:09,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226708605] [2024-06-14 13:55:09,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:55:09,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:55:09,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:55:09,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:55:09,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:55:09,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 13:55:09,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 179 transitions, 2160 flow. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:55:09,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:55:09,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 13:55:09,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:55:10,158 INFO L124 PetriNetUnfolderBase]: 526/927 cut-off events. [2024-06-14 13:55:10,158 INFO L125 PetriNetUnfolderBase]: For 49638/49643 co-relation queries the response was YES. [2024-06-14 13:55:10,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7229 conditions, 927 events. 526/927 cut-off events. For 49638/49643 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4320 event pairs, 83 based on Foata normal form. 6/931 useless extension candidates. Maximal degree in co-relation 7135. Up to 724 conditions per place. [2024-06-14 13:55:10,166 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 138 selfloop transitions, 43 changer transitions 0/191 dead transitions. [2024-06-14 13:55:10,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 191 transitions, 2676 flow [2024-06-14 13:55:10,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:55:10,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:55:10,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-14 13:55:10,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3722943722943723 [2024-06-14 13:55:10,167 INFO L175 Difference]: Start difference. First operand has 194 places, 179 transitions, 2160 flow. Second operand 7 states and 86 transitions. [2024-06-14 13:55:10,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 191 transitions, 2676 flow [2024-06-14 13:55:10,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 191 transitions, 2561 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-14 13:55:10,264 INFO L231 Difference]: Finished difference. Result has 193 places, 181 transitions, 2171 flow [2024-06-14 13:55:10,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2045, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2171, PETRI_PLACES=193, PETRI_TRANSITIONS=181} [2024-06-14 13:55:10,265 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 161 predicate places. [2024-06-14 13:55:10,265 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 181 transitions, 2171 flow [2024-06-14 13:55:10,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:55:10,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:55:10,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:55:10,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 13:55:10,265 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:55:10,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:55:10,266 INFO L85 PathProgramCache]: Analyzing trace with hash -350334456, now seen corresponding path program 2 times [2024-06-14 13:55:10,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:55:10,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949117740] [2024-06-14 13:55:10,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:55:10,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:55:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:55:13,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:55:13,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:55:13,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949117740] [2024-06-14 13:55:13,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949117740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:55:13,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:55:13,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:55:13,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061302503] [2024-06-14 13:55:13,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:55:13,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:55:13,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:55:13,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:55:13,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:55:13,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:55:13,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 181 transitions, 2171 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) [2024-06-14 13:55:13,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:55:13,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:55:13,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:55:14,456 INFO L124 PetriNetUnfolderBase]: 534/936 cut-off events. [2024-06-14 13:55:14,456 INFO L125 PetriNetUnfolderBase]: For 50140/50140 co-relation queries the response was YES. [2024-06-14 13:55:14,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7245 conditions, 936 events. 534/936 cut-off events. For 50140/50140 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4349 event pairs, 85 based on Foata normal form. 1/937 useless extension candidates. Maximal degree in co-relation 7150. Up to 831 conditions per place. [2024-06-14 13:55:14,462 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 162 selfloop transitions, 34 changer transitions 0/198 dead transitions. [2024-06-14 13:55:14,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 198 transitions, 2623 flow [2024-06-14 13:55:14,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:55:14,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:55:14,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-14 13:55:14,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 13:55:14,464 INFO L175 Difference]: Start difference. First operand has 193 places, 181 transitions, 2171 flow. Second operand 10 states and 110 transitions. [2024-06-14 13:55:14,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 198 transitions, 2623 flow [2024-06-14 13:55:14,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 198 transitions, 2552 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-14 13:55:14,558 INFO L231 Difference]: Finished difference. Result has 200 places, 181 transitions, 2176 flow [2024-06-14 13:55:14,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2100, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2176, PETRI_PLACES=200, PETRI_TRANSITIONS=181} [2024-06-14 13:55:14,559 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 168 predicate places. [2024-06-14 13:55:14,559 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 181 transitions, 2176 flow [2024-06-14 13:55:14,559 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) [2024-06-14 13:55:14,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:55:14,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:55:14,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 13:55:14,559 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:55:14,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:55:14,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1989120936, now seen corresponding path program 5 times [2024-06-14 13:55:14,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:55:14,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769044001] [2024-06-14 13:55:14,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:55:14,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:55:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:55:19,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:55:19,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:55:19,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769044001] [2024-06-14 13:55:19,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769044001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:55:19,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:55:19,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:55:19,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15561867] [2024-06-14 13:55:19,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:55:19,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:55:19,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:55:19,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:55:19,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:55:19,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 13:55:19,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 181 transitions, 2176 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:55:19,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:55:19,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 13:55:19,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:55:19,896 INFO L124 PetriNetUnfolderBase]: 541/948 cut-off events. [2024-06-14 13:55:19,896 INFO L125 PetriNetUnfolderBase]: For 54218/54218 co-relation queries the response was YES. [2024-06-14 13:55:19,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7370 conditions, 948 events. 541/948 cut-off events. For 54218/54218 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4427 event pairs, 90 based on Foata normal form. 4/952 useless extension candidates. Maximal degree in co-relation 7273. Up to 809 conditions per place. [2024-06-14 13:55:19,903 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 158 selfloop transitions, 40 changer transitions 0/200 dead transitions. [2024-06-14 13:55:19,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 200 transitions, 2706 flow [2024-06-14 13:55:19,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:55:19,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:55:19,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-14 13:55:19,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367003367003367 [2024-06-14 13:55:19,904 INFO L175 Difference]: Start difference. First operand has 200 places, 181 transitions, 2176 flow. Second operand 9 states and 109 transitions. [2024-06-14 13:55:19,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 200 transitions, 2706 flow [2024-06-14 13:55:20,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 200 transitions, 2588 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-14 13:55:20,006 INFO L231 Difference]: Finished difference. Result has 199 places, 185 transitions, 2237 flow [2024-06-14 13:55:20,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2058, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2237, PETRI_PLACES=199, PETRI_TRANSITIONS=185} [2024-06-14 13:55:20,007 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 167 predicate places. [2024-06-14 13:55:20,007 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 185 transitions, 2237 flow [2024-06-14 13:55:20,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:55:20,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:55:20,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:55:20,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 13:55:20,007 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:55:20,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:55:20,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1860049502, now seen corresponding path program 1 times [2024-06-14 13:55:20,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:55:20,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361221641] [2024-06-14 13:55:20,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:55:20,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:55:20,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:55:25,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:55:25,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:55:25,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361221641] [2024-06-14 13:55:25,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361221641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:55:25,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:55:25,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:55:25,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787753814] [2024-06-14 13:55:25,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:55:25,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:55:25,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:55:25,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:55:25,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:55:25,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:55:25,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 185 transitions, 2237 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) [2024-06-14 13:55:25,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:55:25,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:55:25,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:55:26,004 INFO L124 PetriNetUnfolderBase]: 547/959 cut-off events. [2024-06-14 13:55:26,005 INFO L125 PetriNetUnfolderBase]: For 54099/54099 co-relation queries the response was YES. [2024-06-14 13:55:26,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7493 conditions, 959 events. 547/959 cut-off events. For 54099/54099 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4502 event pairs, 126 based on Foata normal form. 2/961 useless extension candidates. Maximal degree in co-relation 7396. Up to 865 conditions per place. [2024-06-14 13:55:26,013 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 172 selfloop transitions, 33 changer transitions 0/207 dead transitions. [2024-06-14 13:55:26,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 207 transitions, 2754 flow [2024-06-14 13:55:26,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:55:26,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:55:26,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-14 13:55:26,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31955922865013775 [2024-06-14 13:55:26,014 INFO L175 Difference]: Start difference. First operand has 199 places, 185 transitions, 2237 flow. Second operand 11 states and 116 transitions. [2024-06-14 13:55:26,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 207 transitions, 2754 flow [2024-06-14 13:55:26,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 207 transitions, 2612 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-14 13:55:26,121 INFO L231 Difference]: Finished difference. Result has 203 places, 190 transitions, 2232 flow [2024-06-14 13:55:26,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2095, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2232, PETRI_PLACES=203, PETRI_TRANSITIONS=190} [2024-06-14 13:55:26,122 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 171 predicate places. [2024-06-14 13:55:26,122 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 190 transitions, 2232 flow [2024-06-14 13:55:26,122 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) [2024-06-14 13:55:26,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:55:26,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:55:26,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-14 13:55:26,122 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:55:26,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:55:26,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1074637990, now seen corresponding path program 5 times [2024-06-14 13:55:26,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:55:26,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946412667] [2024-06-14 13:55:26,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:55:26,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:55:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:55:30,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:55:30,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:55:30,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946412667] [2024-06-14 13:55:30,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946412667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:55:30,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:55:30,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:55:30,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737490681] [2024-06-14 13:55:30,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:55:30,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:55:30,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:55:30,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:55:30,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:55:30,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:55:30,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 190 transitions, 2232 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:55:30,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:55:30,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:55:30,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:55:31,281 INFO L124 PetriNetUnfolderBase]: 544/953 cut-off events. [2024-06-14 13:55:31,281 INFO L125 PetriNetUnfolderBase]: For 47878/47878 co-relation queries the response was YES. [2024-06-14 13:55:31,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7225 conditions, 953 events. 544/953 cut-off events. For 47878/47878 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4426 event pairs, 108 based on Foata normal form. 2/955 useless extension candidates. Maximal degree in co-relation 7127. Up to 829 conditions per place. [2024-06-14 13:55:31,290 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 167 selfloop transitions, 34 changer transitions 0/203 dead transitions. [2024-06-14 13:55:31,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 203 transitions, 2672 flow [2024-06-14 13:55:31,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:55:31,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:55:31,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-14 13:55:31,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-14 13:55:31,291 INFO L175 Difference]: Start difference. First operand has 203 places, 190 transitions, 2232 flow. Second operand 8 states and 90 transitions. [2024-06-14 13:55:31,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 203 transitions, 2672 flow [2024-06-14 13:55:31,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 203 transitions, 2607 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-14 13:55:31,380 INFO L231 Difference]: Finished difference. Result has 208 places, 190 transitions, 2246 flow [2024-06-14 13:55:31,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2167, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2246, PETRI_PLACES=208, PETRI_TRANSITIONS=190} [2024-06-14 13:55:31,380 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 176 predicate places. [2024-06-14 13:55:31,380 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 190 transitions, 2246 flow [2024-06-14 13:55:31,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:55:31,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:55:31,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:55:31,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-14 13:55:31,381 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:55:31,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:55:31,381 INFO L85 PathProgramCache]: Analyzing trace with hash -937390860, now seen corresponding path program 3 times [2024-06-14 13:55:31,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:55:31,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693867455] [2024-06-14 13:55:31,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:55:31,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:55:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:55:35,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:55:35,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:55:35,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693867455] [2024-06-14 13:55:35,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693867455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:55:35,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:55:35,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:55:35,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843418895] [2024-06-14 13:55:35,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:55:35,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:55:35,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:55:35,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:55:35,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:55:35,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:55:35,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 190 transitions, 2246 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:55:35,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:55:35,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:55:35,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:55:35,893 INFO L124 PetriNetUnfolderBase]: 542/950 cut-off events. [2024-06-14 13:55:35,893 INFO L125 PetriNetUnfolderBase]: For 47521/47521 co-relation queries the response was YES. [2024-06-14 13:55:35,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7199 conditions, 950 events. 542/950 cut-off events. For 47521/47521 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4401 event pairs, 105 based on Foata normal form. 1/951 useless extension candidates. Maximal degree in co-relation 7100. Up to 817 conditions per place. [2024-06-14 13:55:35,901 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 158 selfloop transitions, 43 changer transitions 0/203 dead transitions. [2024-06-14 13:55:35,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 203 transitions, 2692 flow [2024-06-14 13:55:35,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:55:35,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:55:35,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-14 13:55:35,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3446969696969697 [2024-06-14 13:55:35,904 INFO L175 Difference]: Start difference. First operand has 208 places, 190 transitions, 2246 flow. Second operand 8 states and 91 transitions. [2024-06-14 13:55:35,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 203 transitions, 2692 flow [2024-06-14 13:55:36,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 203 transitions, 2612 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-14 13:55:36,010 INFO L231 Difference]: Finished difference. Result has 209 places, 190 transitions, 2272 flow [2024-06-14 13:55:36,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2166, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2272, PETRI_PLACES=209, PETRI_TRANSITIONS=190} [2024-06-14 13:55:36,010 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 177 predicate places. [2024-06-14 13:55:36,010 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 190 transitions, 2272 flow [2024-06-14 13:55:36,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:55:36,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:55:36,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:55:36,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-14 13:55:36,011 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:55:36,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:55:36,011 INFO L85 PathProgramCache]: Analyzing trace with hash -164117560, now seen corresponding path program 6 times [2024-06-14 13:55:36,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:55:36,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034445926] [2024-06-14 13:55:36,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:55:36,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:55:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:55:40,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:55:40,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:55:40,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034445926] [2024-06-14 13:55:40,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034445926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:55:40,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:55:40,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:55:40,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209213175] [2024-06-14 13:55:40,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:55:40,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:55:40,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:55:40,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:55:40,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:55:40,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:55:40,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 190 transitions, 2272 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:55:40,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:55:40,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:55:40,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:55:40,923 INFO L124 PetriNetUnfolderBase]: 546/958 cut-off events. [2024-06-14 13:55:40,923 INFO L125 PetriNetUnfolderBase]: For 50641/50641 co-relation queries the response was YES. [2024-06-14 13:55:40,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7315 conditions, 958 events. 546/958 cut-off events. For 50641/50641 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4463 event pairs, 78 based on Foata normal form. 2/960 useless extension candidates. Maximal degree in co-relation 7215. Up to 803 conditions per place. [2024-06-14 13:55:40,932 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 156 selfloop transitions, 45 changer transitions 0/203 dead transitions. [2024-06-14 13:55:40,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 203 transitions, 2732 flow [2024-06-14 13:55:40,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:55:40,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:55:40,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-14 13:55:40,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-14 13:55:40,933 INFO L175 Difference]: Start difference. First operand has 209 places, 190 transitions, 2272 flow. Second operand 8 states and 93 transitions. [2024-06-14 13:55:40,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 203 transitions, 2732 flow [2024-06-14 13:55:41,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 203 transitions, 2604 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-14 13:55:41,043 INFO L231 Difference]: Finished difference. Result has 208 places, 191 transitions, 2260 flow [2024-06-14 13:55:41,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2144, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2260, PETRI_PLACES=208, PETRI_TRANSITIONS=191} [2024-06-14 13:55:41,043 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 176 predicate places. [2024-06-14 13:55:41,044 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 191 transitions, 2260 flow [2024-06-14 13:55:41,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:55:41,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:55:41,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:55:41,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-14 13:55:41,044 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:55:41,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:55:41,044 INFO L85 PathProgramCache]: Analyzing trace with hash -163517954, now seen corresponding path program 6 times [2024-06-14 13:55:41,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:55:41,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250985952] [2024-06-14 13:55:41,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:55:41,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:55:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:55:45,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:55:45,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:55:45,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250985952] [2024-06-14 13:55:45,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250985952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:55:45,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:55:45,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:55:45,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314738798] [2024-06-14 13:55:45,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:55:45,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:55:45,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:55:45,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:55:45,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:55:45,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:55:45,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 191 transitions, 2260 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) [2024-06-14 13:55:45,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:55:45,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:55:45,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:55:45,821 INFO L124 PetriNetUnfolderBase]: 552/968 cut-off events. [2024-06-14 13:55:45,821 INFO L125 PetriNetUnfolderBase]: For 49007/49007 co-relation queries the response was YES. [2024-06-14 13:55:45,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7332 conditions, 968 events. 552/968 cut-off events. For 49007/49007 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4515 event pairs, 78 based on Foata normal form. 2/970 useless extension candidates. Maximal degree in co-relation 7233. Up to 793 conditions per place. [2024-06-14 13:55:45,827 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 154 selfloop transitions, 51 changer transitions 0/207 dead transitions. [2024-06-14 13:55:45,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 207 transitions, 2766 flow [2024-06-14 13:55:45,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:55:45,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:55:45,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-14 13:55:45,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3468013468013468 [2024-06-14 13:55:45,828 INFO L175 Difference]: Start difference. First operand has 208 places, 191 transitions, 2260 flow. Second operand 9 states and 103 transitions. [2024-06-14 13:55:45,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 207 transitions, 2766 flow [2024-06-14 13:55:45,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 207 transitions, 2662 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-14 13:55:45,920 INFO L231 Difference]: Finished difference. Result has 211 places, 193 transitions, 2310 flow [2024-06-14 13:55:45,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2156, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2310, PETRI_PLACES=211, PETRI_TRANSITIONS=193} [2024-06-14 13:55:45,921 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 179 predicate places. [2024-06-14 13:55:45,921 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 193 transitions, 2310 flow [2024-06-14 13:55:45,921 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) [2024-06-14 13:55:45,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:55:45,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:55:45,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-14 13:55:45,922 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:55:45,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:55:45,922 INFO L85 PathProgramCache]: Analyzing trace with hash -163338216, now seen corresponding path program 2 times [2024-06-14 13:55:45,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:55:45,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225133090] [2024-06-14 13:55:45,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:55:45,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:55:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:55:51,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:55:51,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:55:51,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225133090] [2024-06-14 13:55:51,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225133090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:55:51,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:55:51,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:55:51,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259234222] [2024-06-14 13:55:51,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:55:51,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:55:51,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:55:51,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:55:51,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:55:51,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:55:51,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 193 transitions, 2310 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) [2024-06-14 13:55:51,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:55:51,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:55:51,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:55:52,118 INFO L124 PetriNetUnfolderBase]: 555/973 cut-off events. [2024-06-14 13:55:52,118 INFO L125 PetriNetUnfolderBase]: For 48100/48100 co-relation queries the response was YES. [2024-06-14 13:55:52,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7406 conditions, 973 events. 555/973 cut-off events. For 48100/48100 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4563 event pairs, 133 based on Foata normal form. 1/974 useless extension candidates. Maximal degree in co-relation 7306. Up to 848 conditions per place. [2024-06-14 13:55:52,126 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 160 selfloop transitions, 46 changer transitions 0/208 dead transitions. [2024-06-14 13:55:52,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 208 transitions, 2805 flow [2024-06-14 13:55:52,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:55:52,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:55:52,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-14 13:55:52,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 13:55:52,127 INFO L175 Difference]: Start difference. First operand has 211 places, 193 transitions, 2310 flow. Second operand 9 states and 99 transitions. [2024-06-14 13:55:52,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 208 transitions, 2805 flow [2024-06-14 13:55:52,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 208 transitions, 2677 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-14 13:55:52,223 INFO L231 Difference]: Finished difference. Result has 213 places, 195 transitions, 2333 flow [2024-06-14 13:55:52,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2182, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2333, PETRI_PLACES=213, PETRI_TRANSITIONS=195} [2024-06-14 13:55:52,223 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 181 predicate places. [2024-06-14 13:55:52,223 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 195 transitions, 2333 flow [2024-06-14 13:55:52,223 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) [2024-06-14 13:55:52,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:55:52,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:55:52,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-14 13:55:52,224 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:55:52,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:55:52,224 INFO L85 PathProgramCache]: Analyzing trace with hash -163338464, now seen corresponding path program 7 times [2024-06-14 13:55:52,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:55:52,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905982870] [2024-06-14 13:55:52,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:55:52,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:55:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:55:56,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:55:56,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:55:56,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905982870] [2024-06-14 13:55:56,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905982870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:55:56,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:55:56,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:55:56,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435241324] [2024-06-14 13:55:56,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:55:56,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:55:56,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:55:56,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:55:56,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:55:56,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:55:56,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 195 transitions, 2333 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) [2024-06-14 13:55:56,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:55:56,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:55:56,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:55:57,129 INFO L124 PetriNetUnfolderBase]: 571/999 cut-off events. [2024-06-14 13:55:57,129 INFO L125 PetriNetUnfolderBase]: For 53551/53551 co-relation queries the response was YES. [2024-06-14 13:55:57,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7735 conditions, 999 events. 571/999 cut-off events. For 53551/53551 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4707 event pairs, 63 based on Foata normal form. 2/1001 useless extension candidates. Maximal degree in co-relation 7634. Up to 668 conditions per place. [2024-06-14 13:55:57,137 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 122 selfloop transitions, 93 changer transitions 0/217 dead transitions. [2024-06-14 13:55:57,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 217 transitions, 3031 flow [2024-06-14 13:55:57,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:55:57,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:55:57,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-14 13:55:57,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 13:55:57,139 INFO L175 Difference]: Start difference. First operand has 213 places, 195 transitions, 2333 flow. Second operand 9 states and 108 transitions. [2024-06-14 13:55:57,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 217 transitions, 3031 flow [2024-06-14 13:55:57,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 217 transitions, 2911 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-14 13:55:57,273 INFO L231 Difference]: Finished difference. Result has 215 places, 199 transitions, 2505 flow [2024-06-14 13:55:57,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2217, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2505, PETRI_PLACES=215, PETRI_TRANSITIONS=199} [2024-06-14 13:55:57,273 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 183 predicate places. [2024-06-14 13:55:57,273 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 199 transitions, 2505 flow [2024-06-14 13:55:57,273 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) [2024-06-14 13:55:57,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:55:57,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:55:57,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-14 13:55:57,274 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:55:57,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:55:57,274 INFO L85 PathProgramCache]: Analyzing trace with hash -163344974, now seen corresponding path program 8 times [2024-06-14 13:55:57,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:55:57,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585351573] [2024-06-14 13:55:57,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:55:57,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:55:57,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:56:01,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:56:01,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:56:01,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585351573] [2024-06-14 13:56:01,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585351573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:56:01,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:56:01,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:56:01,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419977634] [2024-06-14 13:56:01,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:56:01,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:56:01,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:56:01,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:56:01,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:56:01,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:56:01,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 199 transitions, 2505 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) [2024-06-14 13:56:01,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:56:01,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:56:01,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:56:02,072 INFO L124 PetriNetUnfolderBase]: 572/1001 cut-off events. [2024-06-14 13:56:02,072 INFO L125 PetriNetUnfolderBase]: For 51415/51415 co-relation queries the response was YES. [2024-06-14 13:56:02,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7818 conditions, 1001 events. 572/1001 cut-off events. For 51415/51415 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4733 event pairs, 63 based on Foata normal form. 2/1003 useless extension candidates. Maximal degree in co-relation 7716. Up to 759 conditions per place. [2024-06-14 13:56:02,081 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 142 selfloop transitions, 73 changer transitions 0/217 dead transitions. [2024-06-14 13:56:02,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 217 transitions, 3053 flow [2024-06-14 13:56:02,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:56:02,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:56:02,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-14 13:56:02,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-14 13:56:02,082 INFO L175 Difference]: Start difference. First operand has 215 places, 199 transitions, 2505 flow. Second operand 9 states and 105 transitions. [2024-06-14 13:56:02,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 217 transitions, 3053 flow [2024-06-14 13:56:02,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 217 transitions, 2911 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-14 13:56:02,186 INFO L231 Difference]: Finished difference. Result has 218 places, 201 transitions, 2569 flow [2024-06-14 13:56:02,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2367, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2569, PETRI_PLACES=218, PETRI_TRANSITIONS=201} [2024-06-14 13:56:02,186 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 186 predicate places. [2024-06-14 13:56:02,187 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 201 transitions, 2569 flow [2024-06-14 13:56:02,187 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) [2024-06-14 13:56:02,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:56:02,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:56:02,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-14 13:56:02,187 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:56:02,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:56:02,188 INFO L85 PathProgramCache]: Analyzing trace with hash 8796348, now seen corresponding path program 2 times [2024-06-14 13:56:02,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:56:02,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338652171] [2024-06-14 13:56:02,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:56:02,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:56:02,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:56:07,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:56:07,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:56:07,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338652171] [2024-06-14 13:56:07,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338652171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:56:07,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:56:07,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:56:07,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939687913] [2024-06-14 13:56:07,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:56:07,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:56:07,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:56:07,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:56:07,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:56:08,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:56:08,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 201 transitions, 2569 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) [2024-06-14 13:56:08,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:56:08,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:56:08,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:56:08,725 INFO L124 PetriNetUnfolderBase]: 568/996 cut-off events. [2024-06-14 13:56:08,725 INFO L125 PetriNetUnfolderBase]: For 49784/49784 co-relation queries the response was YES. [2024-06-14 13:56:08,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7732 conditions, 996 events. 568/996 cut-off events. For 49784/49784 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4761 event pairs, 120 based on Foata normal form. 2/998 useless extension candidates. Maximal degree in co-relation 7629. Up to 872 conditions per place. [2024-06-14 13:56:08,733 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 173 selfloop transitions, 41 changer transitions 0/216 dead transitions. [2024-06-14 13:56:08,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 216 transitions, 3047 flow [2024-06-14 13:56:08,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:56:08,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:56:08,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 13:56:08,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3242424242424242 [2024-06-14 13:56:08,734 INFO L175 Difference]: Start difference. First operand has 218 places, 201 transitions, 2569 flow. Second operand 10 states and 107 transitions. [2024-06-14 13:56:08,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 216 transitions, 3047 flow [2024-06-14 13:56:08,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 216 transitions, 2871 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-14 13:56:08,834 INFO L231 Difference]: Finished difference. Result has 221 places, 201 transitions, 2483 flow [2024-06-14 13:56:08,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2393, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2483, PETRI_PLACES=221, PETRI_TRANSITIONS=201} [2024-06-14 13:56:08,835 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 189 predicate places. [2024-06-14 13:56:08,835 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 201 transitions, 2483 flow [2024-06-14 13:56:08,835 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) [2024-06-14 13:56:08,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:56:08,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:56:08,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-14 13:56:08,835 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:56:08,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:56:08,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1000648414, now seen corresponding path program 7 times [2024-06-14 13:56:08,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:56:08,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973285826] [2024-06-14 13:56:08,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:56:08,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:56:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:56:13,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:56:13,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:56:13,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973285826] [2024-06-14 13:56:13,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973285826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:56:13,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:56:13,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:56:13,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816368466] [2024-06-14 13:56:13,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:56:13,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:56:13,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:56:13,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:56:13,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:56:13,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:56:13,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 201 transitions, 2483 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) [2024-06-14 13:56:13,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:56:13,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:56:13,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:56:14,209 INFO L124 PetriNetUnfolderBase]: 565/990 cut-off events. [2024-06-14 13:56:14,210 INFO L125 PetriNetUnfolderBase]: For 47205/47205 co-relation queries the response was YES. [2024-06-14 13:56:14,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7522 conditions, 990 events. 565/990 cut-off events. For 47205/47205 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4668 event pairs, 89 based on Foata normal form. 2/992 useless extension candidates. Maximal degree in co-relation 7418. Up to 841 conditions per place. [2024-06-14 13:56:14,216 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 168 selfloop transitions, 42 changer transitions 0/212 dead transitions. [2024-06-14 13:56:14,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 212 transitions, 2945 flow [2024-06-14 13:56:14,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:56:14,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:56:14,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-14 13:56:14,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3446969696969697 [2024-06-14 13:56:14,217 INFO L175 Difference]: Start difference. First operand has 221 places, 201 transitions, 2483 flow. Second operand 8 states and 91 transitions. [2024-06-14 13:56:14,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 212 transitions, 2945 flow [2024-06-14 13:56:14,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 212 transitions, 2851 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 13:56:14,318 INFO L231 Difference]: Finished difference. Result has 220 places, 201 transitions, 2477 flow [2024-06-14 13:56:14,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2389, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2477, PETRI_PLACES=220, PETRI_TRANSITIONS=201} [2024-06-14 13:56:14,319 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 188 predicate places. [2024-06-14 13:56:14,319 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 201 transitions, 2477 flow [2024-06-14 13:56:14,319 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) [2024-06-14 13:56:14,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:56:14,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:56:14,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-14 13:56:14,319 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:56:14,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:56:14,320 INFO L85 PathProgramCache]: Analyzing trace with hash -923209824, now seen corresponding path program 9 times [2024-06-14 13:56:14,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:56:14,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514030522] [2024-06-14 13:56:14,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:56:14,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:56:14,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:56:18,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:56:18,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:56:18,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514030522] [2024-06-14 13:56:18,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514030522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:56:18,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:56:18,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:56:18,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662130089] [2024-06-14 13:56:18,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:56:18,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:56:18,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:56:18,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:56:18,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:56:18,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:56:18,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 201 transitions, 2477 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) [2024-06-14 13:56:18,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:56:18,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:56:18,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:56:18,952 INFO L124 PetriNetUnfolderBase]: 571/1000 cut-off events. [2024-06-14 13:56:18,952 INFO L125 PetriNetUnfolderBase]: For 47634/47634 co-relation queries the response was YES. [2024-06-14 13:56:18,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7601 conditions, 1000 events. 571/1000 cut-off events. For 47634/47634 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4710 event pairs, 90 based on Foata normal form. 2/1002 useless extension candidates. Maximal degree in co-relation 7496. Up to 841 conditions per place. [2024-06-14 13:56:18,960 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 169 selfloop transitions, 45 changer transitions 0/216 dead transitions. [2024-06-14 13:56:18,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 216 transitions, 3007 flow [2024-06-14 13:56:18,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:56:18,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:56:18,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-14 13:56:18,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3400673400673401 [2024-06-14 13:56:18,961 INFO L175 Difference]: Start difference. First operand has 220 places, 201 transitions, 2477 flow. Second operand 9 states and 101 transitions. [2024-06-14 13:56:18,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 216 transitions, 3007 flow [2024-06-14 13:56:19,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 216 transitions, 2853 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 13:56:19,072 INFO L231 Difference]: Finished difference. Result has 221 places, 203 transitions, 2466 flow [2024-06-14 13:56:19,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2323, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2466, PETRI_PLACES=221, PETRI_TRANSITIONS=203} [2024-06-14 13:56:19,072 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 189 predicate places. [2024-06-14 13:56:19,072 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 203 transitions, 2466 flow [2024-06-14 13:56:19,072 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) [2024-06-14 13:56:19,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:56:19,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:56:19,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-14 13:56:19,073 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:56:19,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:56:19,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1009460100, now seen corresponding path program 10 times [2024-06-14 13:56:19,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:56:19,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636733698] [2024-06-14 13:56:19,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:56:19,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:56:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:56:23,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:56:23,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:56:23,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636733698] [2024-06-14 13:56:23,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636733698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:56:23,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:56:23,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:56:23,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940710381] [2024-06-14 13:56:23,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:56:23,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:56:23,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:56:23,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:56:23,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:56:23,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:56:23,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 203 transitions, 2466 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) [2024-06-14 13:56:23,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:56:23,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:56:23,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:56:24,197 INFO L124 PetriNetUnfolderBase]: 597/1042 cut-off events. [2024-06-14 13:56:24,197 INFO L125 PetriNetUnfolderBase]: For 55631/55631 co-relation queries the response was YES. [2024-06-14 13:56:24,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8129 conditions, 1042 events. 597/1042 cut-off events. For 55631/55631 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4963 event pairs, 77 based on Foata normal form. 2/1044 useless extension candidates. Maximal degree in co-relation 8024. Up to 595 conditions per place. [2024-06-14 13:56:24,204 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 131 selfloop transitions, 98 changer transitions 0/231 dead transitions. [2024-06-14 13:56:24,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 231 transitions, 3518 flow [2024-06-14 13:56:24,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:56:24,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:56:24,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-14 13:56:24,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38047138047138046 [2024-06-14 13:56:24,205 INFO L175 Difference]: Start difference. First operand has 221 places, 203 transitions, 2466 flow. Second operand 9 states and 113 transitions. [2024-06-14 13:56:24,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 231 transitions, 3518 flow [2024-06-14 13:56:24,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 231 transitions, 3319 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-14 13:56:24,314 INFO L231 Difference]: Finished difference. Result has 221 places, 211 transitions, 2676 flow [2024-06-14 13:56:24,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2287, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2676, PETRI_PLACES=221, PETRI_TRANSITIONS=211} [2024-06-14 13:56:24,314 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 189 predicate places. [2024-06-14 13:56:24,315 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 211 transitions, 2676 flow [2024-06-14 13:56:24,315 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) [2024-06-14 13:56:24,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:56:24,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:56:24,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-14 13:56:24,315 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:56:24,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:56:24,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1009466610, now seen corresponding path program 11 times [2024-06-14 13:56:24,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:56:24,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916365463] [2024-06-14 13:56:24,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:56:24,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:56:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:56:28,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:56:28,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:56:28,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916365463] [2024-06-14 13:56:28,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916365463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:56:28,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:56:28,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:56:28,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124014634] [2024-06-14 13:56:28,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:56:28,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:56:28,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:56:28,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:56:28,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:56:28,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:56:28,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 211 transitions, 2676 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) [2024-06-14 13:56:28,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:56:28,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:56:28,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:56:28,911 INFO L124 PetriNetUnfolderBase]: 593/1036 cut-off events. [2024-06-14 13:56:28,912 INFO L125 PetriNetUnfolderBase]: For 51224/51224 co-relation queries the response was YES. [2024-06-14 13:56:28,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7937 conditions, 1036 events. 593/1036 cut-off events. For 51224/51224 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4925 event pairs, 66 based on Foata normal form. 2/1038 useless extension candidates. Maximal degree in co-relation 7833. Up to 762 conditions per place. [2024-06-14 13:56:28,920 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 147 selfloop transitions, 77 changer transitions 0/226 dead transitions. [2024-06-14 13:56:28,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 226 transitions, 3194 flow [2024-06-14 13:56:28,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:56:28,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:56:28,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-14 13:56:28,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3501683501683502 [2024-06-14 13:56:28,921 INFO L175 Difference]: Start difference. First operand has 221 places, 211 transitions, 2676 flow. Second operand 9 states and 104 transitions. [2024-06-14 13:56:28,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 226 transitions, 3194 flow [2024-06-14 13:56:29,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 226 transitions, 3056 flow, removed 45 selfloop flow, removed 3 redundant places. [2024-06-14 13:56:29,043 INFO L231 Difference]: Finished difference. Result has 227 places, 211 transitions, 2697 flow [2024-06-14 13:56:29,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2538, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2697, PETRI_PLACES=227, PETRI_TRANSITIONS=211} [2024-06-14 13:56:29,044 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 195 predicate places. [2024-06-14 13:56:29,044 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 211 transitions, 2697 flow [2024-06-14 13:56:29,044 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) [2024-06-14 13:56:29,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:56:29,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:56:29,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-14 13:56:29,044 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:56:29,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:56:29,044 INFO L85 PathProgramCache]: Analyzing trace with hash -377303938, now seen corresponding path program 12 times [2024-06-14 13:56:29,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:56:29,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233168643] [2024-06-14 13:56:29,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:56:29,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:56:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:56:33,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:56:33,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:56:33,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233168643] [2024-06-14 13:56:33,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233168643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:56:33,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:56:33,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:56:33,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083089403] [2024-06-14 13:56:33,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:56:33,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:56:33,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:56:33,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:56:33,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:56:33,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:56:33,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 211 transitions, 2697 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) [2024-06-14 13:56:33,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:56:33,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:56:33,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:56:33,894 INFO L124 PetriNetUnfolderBase]: 599/1046 cut-off events. [2024-06-14 13:56:33,894 INFO L125 PetriNetUnfolderBase]: For 52731/52731 co-relation queries the response was YES. [2024-06-14 13:56:33,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8106 conditions, 1046 events. 599/1046 cut-off events. For 52731/52731 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4985 event pairs, 91 based on Foata normal form. 2/1048 useless extension candidates. Maximal degree in co-relation 8000. Up to 870 conditions per place. [2024-06-14 13:56:33,902 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 176 selfloop transitions, 50 changer transitions 0/228 dead transitions. [2024-06-14 13:56:33,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 228 transitions, 3271 flow [2024-06-14 13:56:33,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:56:33,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:56:33,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-14 13:56:33,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-14 13:56:33,903 INFO L175 Difference]: Start difference. First operand has 227 places, 211 transitions, 2697 flow. Second operand 9 states and 105 transitions. [2024-06-14 13:56:33,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 228 transitions, 3271 flow [2024-06-14 13:56:34,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 228 transitions, 3112 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-14 13:56:34,030 INFO L231 Difference]: Finished difference. Result has 228 places, 213 transitions, 2697 flow [2024-06-14 13:56:34,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2538, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2697, PETRI_PLACES=228, PETRI_TRANSITIONS=213} [2024-06-14 13:56:34,030 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 196 predicate places. [2024-06-14 13:56:34,030 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 213 transitions, 2697 flow [2024-06-14 13:56:34,031 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) [2024-06-14 13:56:34,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:56:34,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:56:34,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-14 13:56:34,031 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:56:34,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:56:34,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1009220532, now seen corresponding path program 3 times [2024-06-14 13:56:34,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:56:34,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893396809] [2024-06-14 13:56:34,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:56:34,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:56:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:56:39,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:56:39,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:56:39,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893396809] [2024-06-14 13:56:39,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893396809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:56:39,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:56:39,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:56:39,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180804905] [2024-06-14 13:56:39,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:56:39,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:56:39,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:56:39,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:56:39,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:56:39,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:56:39,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 213 transitions, 2697 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) [2024-06-14 13:56:39,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:56:39,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:56:39,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:56:40,129 INFO L124 PetriNetUnfolderBase]: 605/1056 cut-off events. [2024-06-14 13:56:40,129 INFO L125 PetriNetUnfolderBase]: For 55790/55790 co-relation queries the response was YES. [2024-06-14 13:56:40,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8141 conditions, 1056 events. 605/1056 cut-off events. For 55790/55790 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5096 event pairs, 117 based on Foata normal form. 2/1058 useless extension candidates. Maximal degree in co-relation 8034. Up to 933 conditions per place. [2024-06-14 13:56:40,138 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 185 selfloop transitions, 42 changer transitions 0/229 dead transitions. [2024-06-14 13:56:40,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 229 transitions, 3237 flow [2024-06-14 13:56:40,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:56:40,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:56:40,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 13:56:40,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3242424242424242 [2024-06-14 13:56:40,139 INFO L175 Difference]: Start difference. First operand has 228 places, 213 transitions, 2697 flow. Second operand 10 states and 107 transitions. [2024-06-14 13:56:40,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 229 transitions, 3237 flow [2024-06-14 13:56:40,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 229 transitions, 3098 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-14 13:56:40,281 INFO L231 Difference]: Finished difference. Result has 231 places, 215 transitions, 2687 flow [2024-06-14 13:56:40,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2558, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2687, PETRI_PLACES=231, PETRI_TRANSITIONS=215} [2024-06-14 13:56:40,281 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 199 predicate places. [2024-06-14 13:56:40,281 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 215 transitions, 2687 flow [2024-06-14 13:56:40,281 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) [2024-06-14 13:56:40,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:56:40,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:56:40,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-14 13:56:40,282 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:56:40,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:56:40,282 INFO L85 PathProgramCache]: Analyzing trace with hash -377297180, now seen corresponding path program 3 times [2024-06-14 13:56:40,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:56:40,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889269595] [2024-06-14 13:56:40,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:56:40,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:56:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:56:45,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:56:45,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:56:45,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889269595] [2024-06-14 13:56:45,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889269595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:56:45,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:56:45,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:56:45,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699093962] [2024-06-14 13:56:45,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:56:45,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:56:45,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:56:45,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:56:45,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:56:45,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:56:45,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 215 transitions, 2687 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) [2024-06-14 13:56:45,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:56:45,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:56:45,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:56:46,506 INFO L124 PetriNetUnfolderBase]: 603/1053 cut-off events. [2024-06-14 13:56:46,506 INFO L125 PetriNetUnfolderBase]: For 54393/54393 co-relation queries the response was YES. [2024-06-14 13:56:46,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8029 conditions, 1053 events. 603/1053 cut-off events. For 54393/54393 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5074 event pairs, 135 based on Foata normal form. 1/1054 useless extension candidates. Maximal degree in co-relation 7921. Up to 959 conditions per place. [2024-06-14 13:56:46,515 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 193 selfloop transitions, 33 changer transitions 0/228 dead transitions. [2024-06-14 13:56:46,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 228 transitions, 3216 flow [2024-06-14 13:56:46,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:56:46,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:56:46,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-14 13:56:46,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3265993265993266 [2024-06-14 13:56:46,516 INFO L175 Difference]: Start difference. First operand has 231 places, 215 transitions, 2687 flow. Second operand 9 states and 97 transitions. [2024-06-14 13:56:46,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 228 transitions, 3216 flow [2024-06-14 13:56:46,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 228 transitions, 3109 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-14 13:56:46,646 INFO L231 Difference]: Finished difference. Result has 232 places, 217 transitions, 2699 flow [2024-06-14 13:56:46,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2580, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2699, PETRI_PLACES=232, PETRI_TRANSITIONS=217} [2024-06-14 13:56:46,646 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 200 predicate places. [2024-06-14 13:56:46,647 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 217 transitions, 2699 flow [2024-06-14 13:56:46,647 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) [2024-06-14 13:56:46,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:56:46,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:56:46,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-14 13:56:46,647 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:56:46,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:56:46,648 INFO L85 PathProgramCache]: Analyzing trace with hash -377297428, now seen corresponding path program 13 times [2024-06-14 13:56:46,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:56:46,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435515650] [2024-06-14 13:56:46,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:56:46,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:56:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:56:51,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:56:51,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:56:51,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435515650] [2024-06-14 13:56:51,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435515650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:56:51,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:56:51,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:56:51,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262646658] [2024-06-14 13:56:51,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:56:51,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:56:51,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:56:51,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:56:51,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:56:51,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:56:51,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 217 transitions, 2699 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) [2024-06-14 13:56:51,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:56:51,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:56:51,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:56:51,655 INFO L124 PetriNetUnfolderBase]: 599/1047 cut-off events. [2024-06-14 13:56:51,655 INFO L125 PetriNetUnfolderBase]: For 53351/53351 co-relation queries the response was YES. [2024-06-14 13:56:51,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7873 conditions, 1047 events. 599/1047 cut-off events. For 53351/53351 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5017 event pairs, 90 based on Foata normal form. 2/1049 useless extension candidates. Maximal degree in co-relation 7764. Up to 844 conditions per place. [2024-06-14 13:56:51,664 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 175 selfloop transitions, 56 changer transitions 0/233 dead transitions. [2024-06-14 13:56:51,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 233 transitions, 3239 flow [2024-06-14 13:56:51,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:56:51,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:56:51,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-14 13:56:51,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602693602693603 [2024-06-14 13:56:51,665 INFO L175 Difference]: Start difference. First operand has 232 places, 217 transitions, 2699 flow. Second operand 9 states and 107 transitions. [2024-06-14 13:56:51,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 233 transitions, 3239 flow [2024-06-14 13:56:51,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 233 transitions, 3143 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-14 13:56:51,813 INFO L231 Difference]: Finished difference. Result has 234 places, 217 transitions, 2721 flow [2024-06-14 13:56:51,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2603, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2721, PETRI_PLACES=234, PETRI_TRANSITIONS=217} [2024-06-14 13:56:51,814 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 202 predicate places. [2024-06-14 13:56:51,814 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 217 transitions, 2721 flow [2024-06-14 13:56:51,814 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) [2024-06-14 13:56:51,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:56:51,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:56:51,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-14 13:56:51,815 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:56:51,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:56:51,815 INFO L85 PathProgramCache]: Analyzing trace with hash -370801750, now seen corresponding path program 4 times [2024-06-14 13:56:51,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:56:51,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335491091] [2024-06-14 13:56:51,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:56:51,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:56:51,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:56:57,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:56:57,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:56:57,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335491091] [2024-06-14 13:56:57,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335491091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:56:57,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:56:57,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:56:57,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400059771] [2024-06-14 13:56:57,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:56:57,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:56:57,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:56:57,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:56:57,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:56:57,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:56:57,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 217 transitions, 2721 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) [2024-06-14 13:56:57,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:56:57,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:56:57,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:56:58,313 INFO L124 PetriNetUnfolderBase]: 605/1057 cut-off events. [2024-06-14 13:56:58,313 INFO L125 PetriNetUnfolderBase]: For 54897/54897 co-relation queries the response was YES. [2024-06-14 13:56:58,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7988 conditions, 1057 events. 605/1057 cut-off events. For 54897/54897 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5109 event pairs, 134 based on Foata normal form. 2/1059 useless extension candidates. Maximal degree in co-relation 7878. Up to 964 conditions per place. [2024-06-14 13:56:58,322 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 199 selfloop transitions, 29 changer transitions 0/230 dead transitions. [2024-06-14 13:56:58,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 230 transitions, 3253 flow [2024-06-14 13:56:58,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:56:58,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:56:58,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-14 13:56:58,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3265993265993266 [2024-06-14 13:56:58,323 INFO L175 Difference]: Start difference. First operand has 234 places, 217 transitions, 2721 flow. Second operand 9 states and 97 transitions. [2024-06-14 13:56:58,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 230 transitions, 3253 flow [2024-06-14 13:56:58,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 230 transitions, 2980 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-14 13:56:58,458 INFO L231 Difference]: Finished difference. Result has 234 places, 219 transitions, 2556 flow [2024-06-14 13:56:58,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2448, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2556, PETRI_PLACES=234, PETRI_TRANSITIONS=219} [2024-06-14 13:56:58,459 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 202 predicate places. [2024-06-14 13:56:58,459 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 219 transitions, 2556 flow [2024-06-14 13:56:58,459 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) [2024-06-14 13:56:58,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:56:58,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:56:58,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-14 13:56:58,459 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:56:58,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:56:58,459 INFO L85 PathProgramCache]: Analyzing trace with hash -724129590, now seen corresponding path program 14 times [2024-06-14 13:56:58,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:56:58,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651755644] [2024-06-14 13:56:58,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:56:58,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:56:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:57:02,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:57:02,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:57:02,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651755644] [2024-06-14 13:57:02,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651755644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:57:02,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:57:02,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:57:02,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096457138] [2024-06-14 13:57:02,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:57:02,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:57:02,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:57:02,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:57:02,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:57:02,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:57:02,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 219 transitions, 2556 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:57:02,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:57:02,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:57:02,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:57:02,656 INFO L124 PetriNetUnfolderBase]: 601/1051 cut-off events. [2024-06-14 13:57:02,656 INFO L125 PetriNetUnfolderBase]: For 51741/51741 co-relation queries the response was YES. [2024-06-14 13:57:02,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7553 conditions, 1051 events. 601/1051 cut-off events. For 51741/51741 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5072 event pairs, 204 based on Foata normal form. 2/1053 useless extension candidates. Maximal degree in co-relation 7443. Up to 1017 conditions per place. [2024-06-14 13:57:02,665 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 212 selfloop transitions, 15 changer transitions 0/229 dead transitions. [2024-06-14 13:57:02,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 229 transitions, 3042 flow [2024-06-14 13:57:02,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:57:02,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:57:02,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-14 13:57:02,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3063973063973064 [2024-06-14 13:57:02,666 INFO L175 Difference]: Start difference. First operand has 234 places, 219 transitions, 2556 flow. Second operand 9 states and 91 transitions. [2024-06-14 13:57:02,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 229 transitions, 3042 flow [2024-06-14 13:57:02,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 229 transitions, 2928 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-14 13:57:02,789 INFO L231 Difference]: Finished difference. Result has 236 places, 219 transitions, 2477 flow [2024-06-14 13:57:02,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2442, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2477, PETRI_PLACES=236, PETRI_TRANSITIONS=219} [2024-06-14 13:57:02,789 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 204 predicate places. [2024-06-14 13:57:02,789 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 219 transitions, 2477 flow [2024-06-14 13:57:02,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:57:02,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:57:02,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:57:02,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-14 13:57:02,790 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:57:02,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:57:02,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1269853568, now seen corresponding path program 5 times [2024-06-14 13:57:02,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:57:02,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425599341] [2024-06-14 13:57:02,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:57:02,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:57:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:57:08,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:57:08,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:57:08,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425599341] [2024-06-14 13:57:08,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425599341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:57:08,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:57:08,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:57:08,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191518330] [2024-06-14 13:57:08,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:57:08,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:57:08,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:57:08,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:57:08,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:57:08,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:57:08,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 219 transitions, 2477 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) [2024-06-14 13:57:08,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:57:08,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:57:08,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:57:09,046 INFO L124 PetriNetUnfolderBase]: 602/1053 cut-off events. [2024-06-14 13:57:09,046 INFO L125 PetriNetUnfolderBase]: For 51469/51469 co-relation queries the response was YES. [2024-06-14 13:57:09,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7461 conditions, 1053 events. 602/1053 cut-off events. For 51469/51469 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5079 event pairs, 201 based on Foata normal form. 2/1055 useless extension candidates. Maximal degree in co-relation 7350. Up to 980 conditions per place. [2024-06-14 13:57:09,057 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 209 selfloop transitions, 24 changer transitions 0/235 dead transitions. [2024-06-14 13:57:09,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 235 transitions, 3147 flow [2024-06-14 13:57:09,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:57:09,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:57:09,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 13:57:09,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3242424242424242 [2024-06-14 13:57:09,058 INFO L175 Difference]: Start difference. First operand has 236 places, 219 transitions, 2477 flow. Second operand 10 states and 107 transitions. [2024-06-14 13:57:09,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 235 transitions, 3147 flow [2024-06-14 13:57:09,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 235 transitions, 3106 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-14 13:57:09,180 INFO L231 Difference]: Finished difference. Result has 238 places, 221 transitions, 2537 flow [2024-06-14 13:57:09,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2436, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2537, PETRI_PLACES=238, PETRI_TRANSITIONS=221} [2024-06-14 13:57:09,181 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 206 predicate places. [2024-06-14 13:57:09,181 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 221 transitions, 2537 flow [2024-06-14 13:57:09,181 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) [2024-06-14 13:57:09,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:57:09,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:57:09,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-14 13:57:09,181 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:57:09,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:57:09,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1259734238, now seen corresponding path program 6 times [2024-06-14 13:57:09,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:57:09,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127144547] [2024-06-14 13:57:09,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:57:09,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:57:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:57:14,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:57:14,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:57:14,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127144547] [2024-06-14 13:57:14,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127144547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:57:14,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:57:14,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:57:14,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101093262] [2024-06-14 13:57:14,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:57:14,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:57:14,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:57:14,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:57:14,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:57:14,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:57:14,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 221 transitions, 2537 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) [2024-06-14 13:57:14,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:57:14,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:57:14,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:57:14,911 INFO L124 PetriNetUnfolderBase]: 598/1047 cut-off events. [2024-06-14 13:57:14,911 INFO L125 PetriNetUnfolderBase]: For 49839/49839 co-relation queries the response was YES. [2024-06-14 13:57:14,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7374 conditions, 1047 events. 598/1047 cut-off events. For 49839/49839 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5050 event pairs, 205 based on Foata normal form. 2/1049 useless extension candidates. Maximal degree in co-relation 7262. Up to 999 conditions per place. [2024-06-14 13:57:14,920 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 210 selfloop transitions, 20 changer transitions 0/232 dead transitions. [2024-06-14 13:57:14,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 232 transitions, 3029 flow [2024-06-14 13:57:14,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:57:14,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:57:14,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-14 13:57:14,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30606060606060603 [2024-06-14 13:57:14,921 INFO L175 Difference]: Start difference. First operand has 238 places, 221 transitions, 2537 flow. Second operand 10 states and 101 transitions. [2024-06-14 13:57:14,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 232 transitions, 3029 flow [2024-06-14 13:57:15,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 232 transitions, 2942 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-14 13:57:15,050 INFO L231 Difference]: Finished difference. Result has 240 places, 221 transitions, 2498 flow [2024-06-14 13:57:15,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2450, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2498, PETRI_PLACES=240, PETRI_TRANSITIONS=221} [2024-06-14 13:57:15,050 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 208 predicate places. [2024-06-14 13:57:15,050 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 221 transitions, 2498 flow [2024-06-14 13:57:15,050 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) [2024-06-14 13:57:15,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:57:15,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:57:15,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-14 13:57:15,051 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:57:15,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:57:15,051 INFO L85 PathProgramCache]: Analyzing trace with hash 115091121, now seen corresponding path program 1 times [2024-06-14 13:57:15,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:57:15,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716244233] [2024-06-14 13:57:15,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:57:15,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:57:15,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:57:18,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:57:18,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:57:18,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716244233] [2024-06-14 13:57:18,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716244233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:57:18,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:57:18,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:57:18,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792267107] [2024-06-14 13:57:18,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:57:18,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:57:18,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:57:18,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:57:18,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:57:18,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 13:57:18,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 221 transitions, 2498 flow. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:57:18,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:57:18,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 13:57:18,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:57:19,235 INFO L124 PetriNetUnfolderBase]: 592/1043 cut-off events. [2024-06-14 13:57:19,235 INFO L125 PetriNetUnfolderBase]: For 51774/51779 co-relation queries the response was YES. [2024-06-14 13:57:19,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7319 conditions, 1043 events. 592/1043 cut-off events. For 51774/51779 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5082 event pairs, 83 based on Foata normal form. 6/1047 useless extension candidates. Maximal degree in co-relation 7206. Up to 831 conditions per place. [2024-06-14 13:57:19,245 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 179 selfloop transitions, 44 changer transitions 0/233 dead transitions. [2024-06-14 13:57:19,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 233 transitions, 2990 flow [2024-06-14 13:57:19,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:57:19,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:57:19,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-14 13:57:19,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560606060606061 [2024-06-14 13:57:19,246 INFO L175 Difference]: Start difference. First operand has 240 places, 221 transitions, 2498 flow. Second operand 8 states and 94 transitions. [2024-06-14 13:57:19,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 233 transitions, 2990 flow [2024-06-14 13:57:19,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 233 transitions, 2950 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-14 13:57:19,385 INFO L231 Difference]: Finished difference. Result has 239 places, 222 transitions, 2569 flow [2024-06-14 13:57:19,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2458, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2569, PETRI_PLACES=239, PETRI_TRANSITIONS=222} [2024-06-14 13:57:19,385 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 207 predicate places. [2024-06-14 13:57:19,385 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 222 transitions, 2569 flow [2024-06-14 13:57:19,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:57:19,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:57:19,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:57:19,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-14 13:57:19,385 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:57:19,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:57:19,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1169205169, now seen corresponding path program 2 times [2024-06-14 13:57:19,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:57:19,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681084563] [2024-06-14 13:57:19,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:57:19,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:57:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:57:23,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:57:23,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:57:23,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681084563] [2024-06-14 13:57:23,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681084563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:57:23,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:57:23,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:57:23,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574411531] [2024-06-14 13:57:23,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:57:23,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:57:23,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:57:23,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:57:23,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:57:23,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:57:23,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 222 transitions, 2569 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) [2024-06-14 13:57:23,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:57:23,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:57:23,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:57:24,283 INFO L124 PetriNetUnfolderBase]: 606/1063 cut-off events. [2024-06-14 13:57:24,283 INFO L125 PetriNetUnfolderBase]: For 53274/53274 co-relation queries the response was YES. [2024-06-14 13:57:24,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7550 conditions, 1063 events. 606/1063 cut-off events. For 53274/53274 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5156 event pairs, 117 based on Foata normal form. 2/1065 useless extension candidates. Maximal degree in co-relation 7436. Up to 944 conditions per place. [2024-06-14 13:57:24,292 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 203 selfloop transitions, 37 changer transitions 0/242 dead transitions. [2024-06-14 13:57:24,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 242 transitions, 3131 flow [2024-06-14 13:57:24,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:57:24,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:57:24,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-14 13:57:24,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325068870523416 [2024-06-14 13:57:24,293 INFO L175 Difference]: Start difference. First operand has 239 places, 222 transitions, 2569 flow. Second operand 11 states and 118 transitions. [2024-06-14 13:57:24,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 242 transitions, 3131 flow [2024-06-14 13:57:24,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 242 transitions, 3032 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 13:57:24,424 INFO L231 Difference]: Finished difference. Result has 244 places, 223 transitions, 2569 flow [2024-06-14 13:57:24,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2470, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2569, PETRI_PLACES=244, PETRI_TRANSITIONS=223} [2024-06-14 13:57:24,428 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 212 predicate places. [2024-06-14 13:57:24,428 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 223 transitions, 2569 flow [2024-06-14 13:57:24,428 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) [2024-06-14 13:57:24,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:57:24,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:57:24,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-14 13:57:24,429 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:57:24,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:57:24,429 INFO L85 PathProgramCache]: Analyzing trace with hash 254295417, now seen corresponding path program 3 times [2024-06-14 13:57:24,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:57:24,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651091327] [2024-06-14 13:57:24,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:57:24,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:57:24,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:57:28,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:57:28,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:57:28,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651091327] [2024-06-14 13:57:28,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651091327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:57:28,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:57:28,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:57:28,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058316588] [2024-06-14 13:57:28,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:57:28,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:57:28,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:57:28,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:57:28,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:57:28,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:57:28,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 223 transitions, 2569 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) [2024-06-14 13:57:28,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:57:28,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:57:28,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:57:28,978 INFO L124 PetriNetUnfolderBase]: 610/1071 cut-off events. [2024-06-14 13:57:28,978 INFO L125 PetriNetUnfolderBase]: For 55557/55557 co-relation queries the response was YES. [2024-06-14 13:57:28,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7597 conditions, 1071 events. 610/1071 cut-off events. For 55557/55557 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5235 event pairs, 117 based on Foata normal form. 2/1073 useless extension candidates. Maximal degree in co-relation 7482. Up to 955 conditions per place. [2024-06-14 13:57:28,987 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 207 selfloop transitions, 34 changer transitions 0/243 dead transitions. [2024-06-14 13:57:28,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 243 transitions, 3129 flow [2024-06-14 13:57:28,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:57:28,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:57:28,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-14 13:57:28,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32231404958677684 [2024-06-14 13:57:28,994 INFO L175 Difference]: Start difference. First operand has 244 places, 223 transitions, 2569 flow. Second operand 11 states and 117 transitions. [2024-06-14 13:57:28,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 243 transitions, 3129 flow [2024-06-14 13:57:29,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 243 transitions, 3037 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-14 13:57:29,148 INFO L231 Difference]: Finished difference. Result has 246 places, 224 transitions, 2571 flow [2024-06-14 13:57:29,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2477, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2571, PETRI_PLACES=246, PETRI_TRANSITIONS=224} [2024-06-14 13:57:29,149 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 214 predicate places. [2024-06-14 13:57:29,149 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 224 transitions, 2571 flow [2024-06-14 13:57:29,149 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) [2024-06-14 13:57:29,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:57:29,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:57:29,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-14 13:57:29,149 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:57:29,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:57:29,149 INFO L85 PathProgramCache]: Analyzing trace with hash 892093488, now seen corresponding path program 1 times [2024-06-14 13:57:29,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:57:29,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763123992] [2024-06-14 13:57:29,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:57:29,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:57:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:57:33,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:57:33,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:57:33,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763123992] [2024-06-14 13:57:33,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763123992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:57:33,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:57:33,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:57:33,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199363858] [2024-06-14 13:57:33,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:57:33,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:57:33,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:57:33,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:57:33,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:57:33,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:57:33,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 224 transitions, 2571 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) [2024-06-14 13:57:33,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:57:33,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:57:33,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:57:34,281 INFO L124 PetriNetUnfolderBase]: 613/1076 cut-off events. [2024-06-14 13:57:34,281 INFO L125 PetriNetUnfolderBase]: For 55331/55331 co-relation queries the response was YES. [2024-06-14 13:57:34,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7647 conditions, 1076 events. 613/1076 cut-off events. For 55331/55331 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5261 event pairs, 116 based on Foata normal form. 1/1077 useless extension candidates. Maximal degree in co-relation 7531. Up to 928 conditions per place. [2024-06-14 13:57:34,290 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 197 selfloop transitions, 46 changer transitions 0/245 dead transitions. [2024-06-14 13:57:34,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 245 transitions, 3171 flow [2024-06-14 13:57:34,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:57:34,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:57:34,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-14 13:57:34,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3278236914600551 [2024-06-14 13:57:34,291 INFO L175 Difference]: Start difference. First operand has 246 places, 224 transitions, 2571 flow. Second operand 11 states and 119 transitions. [2024-06-14 13:57:34,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 245 transitions, 3171 flow [2024-06-14 13:57:34,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 245 transitions, 3088 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-14 13:57:34,449 INFO L231 Difference]: Finished difference. Result has 249 places, 226 transitions, 2642 flow [2024-06-14 13:57:34,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2488, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2642, PETRI_PLACES=249, PETRI_TRANSITIONS=226} [2024-06-14 13:57:34,449 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 217 predicate places. [2024-06-14 13:57:34,450 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 226 transitions, 2642 flow [2024-06-14 13:57:34,450 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) [2024-06-14 13:57:34,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:57:34,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:57:34,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-14 13:57:34,450 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:57:34,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:57:34,450 INFO L85 PathProgramCache]: Analyzing trace with hash 896769745, now seen corresponding path program 1 times [2024-06-14 13:57:34,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:57:34,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180097478] [2024-06-14 13:57:34,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:57:34,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:57:34,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:57:39,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:57:39,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:57:39,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180097478] [2024-06-14 13:57:39,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180097478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:57:39,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:57:39,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:57:39,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805645069] [2024-06-14 13:57:39,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:57:39,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:57:39,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:57:39,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:57:39,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:57:40,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:57:40,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 226 transitions, 2642 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) [2024-06-14 13:57:40,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:57:40,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:57:40,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:57:40,708 INFO L124 PetriNetUnfolderBase]: 619/1086 cut-off events. [2024-06-14 13:57:40,708 INFO L125 PetriNetUnfolderBase]: For 58914/58914 co-relation queries the response was YES. [2024-06-14 13:57:40,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7775 conditions, 1086 events. 619/1086 cut-off events. For 58914/58914 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5320 event pairs, 115 based on Foata normal form. 2/1088 useless extension candidates. Maximal degree in co-relation 7658. Up to 971 conditions per place. [2024-06-14 13:57:40,718 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 212 selfloop transitions, 35 changer transitions 0/249 dead transitions. [2024-06-14 13:57:40,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 249 transitions, 3254 flow [2024-06-14 13:57:40,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 13:57:40,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 13:57:40,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-14 13:57:40,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32323232323232326 [2024-06-14 13:57:40,719 INFO L175 Difference]: Start difference. First operand has 249 places, 226 transitions, 2642 flow. Second operand 12 states and 128 transitions. [2024-06-14 13:57:40,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 249 transitions, 3254 flow [2024-06-14 13:57:40,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 249 transitions, 3146 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-14 13:57:40,906 INFO L231 Difference]: Finished difference. Result has 252 places, 228 transitions, 2651 flow [2024-06-14 13:57:40,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2534, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2651, PETRI_PLACES=252, PETRI_TRANSITIONS=228} [2024-06-14 13:57:40,906 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 220 predicate places. [2024-06-14 13:57:40,906 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 228 transitions, 2651 flow [2024-06-14 13:57:40,907 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) [2024-06-14 13:57:40,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:57:40,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:57:40,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-14 13:57:40,907 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:57:40,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:57:40,907 INFO L85 PathProgramCache]: Analyzing trace with hash -962232753, now seen corresponding path program 4 times [2024-06-14 13:57:40,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:57:40,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374998265] [2024-06-14 13:57:40,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:57:40,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:57:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:57:44,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:57:44,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:57:44,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374998265] [2024-06-14 13:57:44,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374998265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:57:44,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:57:44,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:57:44,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132793248] [2024-06-14 13:57:44,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:57:44,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:57:44,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:57:44,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:57:44,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:57:44,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:57:44,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 228 transitions, 2651 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) [2024-06-14 13:57:44,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:57:44,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:57:44,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:57:45,374 INFO L124 PetriNetUnfolderBase]: 623/1094 cut-off events. [2024-06-14 13:57:45,374 INFO L125 PetriNetUnfolderBase]: For 60514/60514 co-relation queries the response was YES. [2024-06-14 13:57:45,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7847 conditions, 1094 events. 623/1094 cut-off events. For 60514/60514 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5361 event pairs, 91 based on Foata normal form. 2/1096 useless extension candidates. Maximal degree in co-relation 7729. Up to 993 conditions per place. [2024-06-14 13:57:45,384 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 216 selfloop transitions, 29 changer transitions 0/247 dead transitions. [2024-06-14 13:57:45,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 247 transitions, 3231 flow [2024-06-14 13:57:45,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:57:45,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:57:45,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 13:57:45,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-14 13:57:45,385 INFO L175 Difference]: Start difference. First operand has 252 places, 228 transitions, 2651 flow. Second operand 10 states and 111 transitions. [2024-06-14 13:57:45,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 247 transitions, 3231 flow [2024-06-14 13:57:45,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 247 transitions, 3126 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-14 13:57:45,573 INFO L231 Difference]: Finished difference. Result has 252 places, 229 transitions, 2633 flow [2024-06-14 13:57:45,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2546, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2633, PETRI_PLACES=252, PETRI_TRANSITIONS=229} [2024-06-14 13:57:45,573 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 220 predicate places. [2024-06-14 13:57:45,573 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 229 transitions, 2633 flow [2024-06-14 13:57:45,574 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) [2024-06-14 13:57:45,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:57:45,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:57:45,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-14 13:57:45,574 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:57:45,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:57:45,574 INFO L85 PathProgramCache]: Analyzing trace with hash -962236473, now seen corresponding path program 5 times [2024-06-14 13:57:45,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:57:45,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573896502] [2024-06-14 13:57:45,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:57:45,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:57:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:57:49,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:57:49,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:57:49,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573896502] [2024-06-14 13:57:49,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573896502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:57:49,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:57:49,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:57:49,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523985148] [2024-06-14 13:57:49,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:57:49,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:57:49,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:57:49,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:57:49,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:57:49,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:57:49,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 229 transitions, 2633 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) [2024-06-14 13:57:49,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:57:49,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:57:49,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:57:50,154 INFO L124 PetriNetUnfolderBase]: 627/1102 cut-off events. [2024-06-14 13:57:50,155 INFO L125 PetriNetUnfolderBase]: For 63292/63292 co-relation queries the response was YES. [2024-06-14 13:57:50,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7873 conditions, 1102 events. 627/1102 cut-off events. For 63292/63292 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5422 event pairs, 89 based on Foata normal form. 2/1104 useless extension candidates. Maximal degree in co-relation 7755. Up to 1004 conditions per place. [2024-06-14 13:57:50,165 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 220 selfloop transitions, 26 changer transitions 0/248 dead transitions. [2024-06-14 13:57:50,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 248 transitions, 3211 flow [2024-06-14 13:57:50,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:57:50,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:57:50,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-14 13:57:50,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 13:57:50,166 INFO L175 Difference]: Start difference. First operand has 252 places, 229 transitions, 2633 flow. Second operand 10 states and 110 transitions. [2024-06-14 13:57:50,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 248 transitions, 3211 flow [2024-06-14 13:57:50,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 248 transitions, 3136 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-14 13:57:50,344 INFO L231 Difference]: Finished difference. Result has 254 places, 230 transitions, 2640 flow [2024-06-14 13:57:50,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2558, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2640, PETRI_PLACES=254, PETRI_TRANSITIONS=230} [2024-06-14 13:57:50,345 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 222 predicate places. [2024-06-14 13:57:50,345 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 230 transitions, 2640 flow [2024-06-14 13:57:50,345 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) [2024-06-14 13:57:50,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:57:50,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:57:50,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-14 13:57:50,345 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:57:50,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:57:50,346 INFO L85 PathProgramCache]: Analyzing trace with hash -875390841, now seen corresponding path program 2 times [2024-06-14 13:57:50,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:57:50,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943903693] [2024-06-14 13:57:50,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:57:50,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:57:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:57:57,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:57:57,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:57:57,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943903693] [2024-06-14 13:57:57,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943903693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:57:57,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:57:57,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:57:57,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816122077] [2024-06-14 13:57:57,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:57:57,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:57:57,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:57:57,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:57:57,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:57:57,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:57:57,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 230 transitions, 2640 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) [2024-06-14 13:57:57,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:57:57,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:57:57,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:57:58,443 INFO L124 PetriNetUnfolderBase]: 633/1112 cut-off events. [2024-06-14 13:57:58,444 INFO L125 PetriNetUnfolderBase]: For 65148/65148 co-relation queries the response was YES. [2024-06-14 13:57:58,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7947 conditions, 1112 events. 633/1112 cut-off events. For 65148/65148 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5464 event pairs, 91 based on Foata normal form. 2/1114 useless extension candidates. Maximal degree in co-relation 7828. Up to 1009 conditions per place. [2024-06-14 13:57:58,454 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 221 selfloop transitions, 29 changer transitions 0/252 dead transitions. [2024-06-14 13:57:58,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 252 transitions, 3266 flow [2024-06-14 13:57:58,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:57:58,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:57:58,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-14 13:57:58,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 13:57:58,456 INFO L175 Difference]: Start difference. First operand has 254 places, 230 transitions, 2640 flow. Second operand 11 states and 121 transitions. [2024-06-14 13:57:58,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 252 transitions, 3266 flow [2024-06-14 13:57:58,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 252 transitions, 3191 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-14 13:57:58,637 INFO L231 Difference]: Finished difference. Result has 257 places, 232 transitions, 2674 flow [2024-06-14 13:57:58,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2565, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2674, PETRI_PLACES=257, PETRI_TRANSITIONS=232} [2024-06-14 13:57:58,637 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 225 predicate places. [2024-06-14 13:57:58,638 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 232 transitions, 2674 flow [2024-06-14 13:57:58,638 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) [2024-06-14 13:57:58,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:57:58,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:57:58,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-14 13:57:58,638 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:57:58,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:57:58,638 INFO L85 PathProgramCache]: Analyzing trace with hash -875540788, now seen corresponding path program 2 times [2024-06-14 13:57:58,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:57:58,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657135621] [2024-06-14 13:57:58,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:57:58,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:57:58,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:58:03,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:58:03,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:58:03,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657135621] [2024-06-14 13:58:03,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657135621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:58:03,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:58:03,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:58:03,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867432720] [2024-06-14 13:58:03,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:58:03,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:58:03,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:58:03,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:58:03,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:58:03,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:58:03,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 232 transitions, 2674 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) [2024-06-14 13:58:03,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:58:03,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:58:03,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:58:03,962 INFO L124 PetriNetUnfolderBase]: 631/1109 cut-off events. [2024-06-14 13:58:03,962 INFO L125 PetriNetUnfolderBase]: For 62516/62516 co-relation queries the response was YES. [2024-06-14 13:58:03,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7874 conditions, 1109 events. 631/1109 cut-off events. For 62516/62516 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5471 event pairs, 91 based on Foata normal form. 1/1110 useless extension candidates. Maximal degree in co-relation 7754. Up to 1005 conditions per place. [2024-06-14 13:58:03,972 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 216 selfloop transitions, 32 changer transitions 0/250 dead transitions. [2024-06-14 13:58:03,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 250 transitions, 3244 flow [2024-06-14 13:58:03,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:58:03,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:58:03,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-14 13:58:03,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-14 13:58:03,973 INFO L175 Difference]: Start difference. First operand has 257 places, 232 transitions, 2674 flow. Second operand 10 states and 112 transitions. [2024-06-14 13:58:03,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 250 transitions, 3244 flow [2024-06-14 13:58:04,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 250 transitions, 3135 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-14 13:58:04,180 INFO L231 Difference]: Finished difference. Result has 258 places, 232 transitions, 2637 flow [2024-06-14 13:58:04,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2565, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2637, PETRI_PLACES=258, PETRI_TRANSITIONS=232} [2024-06-14 13:58:04,180 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 226 predicate places. [2024-06-14 13:58:04,181 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 232 transitions, 2637 flow [2024-06-14 13:58:04,181 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) [2024-06-14 13:58:04,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:58:04,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:58:04,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-14 13:58:04,181 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:58:04,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:58:04,181 INFO L85 PathProgramCache]: Analyzing trace with hash 27675501, now seen corresponding path program 3 times [2024-06-14 13:58:04,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:58:04,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836874327] [2024-06-14 13:58:04,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:58:04,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:58:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:58:09,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:58:09,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:58:09,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836874327] [2024-06-14 13:58:09,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836874327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:58:09,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:58:09,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:58:09,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639377313] [2024-06-14 13:58:09,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:58:09,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:58:09,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:58:09,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:58:09,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:58:09,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:58:09,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 232 transitions, 2637 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) [2024-06-14 13:58:09,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:58:09,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:58:09,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:58:10,540 INFO L124 PetriNetUnfolderBase]: 657/1151 cut-off events. [2024-06-14 13:58:10,540 INFO L125 PetriNetUnfolderBase]: For 76240/76240 co-relation queries the response was YES. [2024-06-14 13:58:10,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8463 conditions, 1151 events. 657/1151 cut-off events. For 76240/76240 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5689 event pairs, 77 based on Foata normal form. 2/1153 useless extension candidates. Maximal degree in co-relation 8342. Up to 839 conditions per place. [2024-06-14 13:58:10,548 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 181 selfloop transitions, 79 changer transitions 0/262 dead transitions. [2024-06-14 13:58:10,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 262 transitions, 3671 flow [2024-06-14 13:58:10,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:58:10,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:58:10,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-14 13:58:10,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 13:58:10,549 INFO L175 Difference]: Start difference. First operand has 258 places, 232 transitions, 2637 flow. Second operand 11 states and 132 transitions. [2024-06-14 13:58:10,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 262 transitions, 3671 flow [2024-06-14 13:58:10,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 262 transitions, 3601 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-14 13:58:10,790 INFO L231 Difference]: Finished difference. Result has 261 places, 238 transitions, 2872 flow [2024-06-14 13:58:10,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2567, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2872, PETRI_PLACES=261, PETRI_TRANSITIONS=238} [2024-06-14 13:58:10,790 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 229 predicate places. [2024-06-14 13:58:10,791 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 238 transitions, 2872 flow [2024-06-14 13:58:10,791 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) [2024-06-14 13:58:10,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:58:10,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:58:10,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-14 13:58:10,791 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:58:10,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:58:10,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1590759958, now seen corresponding path program 1 times [2024-06-14 13:58:10,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:58:10,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473156577] [2024-06-14 13:58:10,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:58:10,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:58:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:58:17,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:58:17,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:58:17,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473156577] [2024-06-14 13:58:17,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473156577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:58:17,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:58:17,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:58:17,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536026327] [2024-06-14 13:58:17,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:58:17,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:58:17,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:58:17,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:58:17,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:58:17,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 13:58:17,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 238 transitions, 2872 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) [2024-06-14 13:58:17,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:58:17,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 13:58:17,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:58:17,855 INFO L124 PetriNetUnfolderBase]: 660/1156 cut-off events. [2024-06-14 13:58:17,855 INFO L125 PetriNetUnfolderBase]: For 76695/76695 co-relation queries the response was YES. [2024-06-14 13:58:17,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8701 conditions, 1156 events. 660/1156 cut-off events. For 76695/76695 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5748 event pairs, 155 based on Foata normal form. 1/1157 useless extension candidates. Maximal degree in co-relation 8579. Up to 1010 conditions per place. [2024-06-14 13:58:17,866 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 201 selfloop transitions, 52 changer transitions 0/255 dead transitions. [2024-06-14 13:58:17,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 255 transitions, 3476 flow [2024-06-14 13:58:17,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:58:17,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:58:17,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 13:58:17,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575757575757576 [2024-06-14 13:58:17,867 INFO L175 Difference]: Start difference. First operand has 261 places, 238 transitions, 2872 flow. Second operand 10 states and 118 transitions. [2024-06-14 13:58:17,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 255 transitions, 3476 flow [2024-06-14 13:58:18,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 255 transitions, 3352 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-14 13:58:18,097 INFO L231 Difference]: Finished difference. Result has 264 places, 240 transitions, 2916 flow [2024-06-14 13:58:18,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2748, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2916, PETRI_PLACES=264, PETRI_TRANSITIONS=240} [2024-06-14 13:58:18,097 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 232 predicate places. [2024-06-14 13:58:18,097 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 240 transitions, 2916 flow [2024-06-14 13:58:18,097 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) [2024-06-14 13:58:18,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:58:18,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:58:18,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-14 13:58:18,098 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:58:18,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:58:18,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1590975439, now seen corresponding path program 6 times [2024-06-14 13:58:18,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:58:18,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049729081] [2024-06-14 13:58:18,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:58:18,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:58:18,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:58:22,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:58:22,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:58:22,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049729081] [2024-06-14 13:58:22,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049729081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:58:22,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:58:22,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:58:22,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083469237] [2024-06-14 13:58:22,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:58:22,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:58:22,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:58:22,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:58:22,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:58:22,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:58:22,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 240 transitions, 2916 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) [2024-06-14 13:58:22,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:58:22,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:58:22,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:58:22,775 INFO L124 PetriNetUnfolderBase]: 664/1164 cut-off events. [2024-06-14 13:58:22,775 INFO L125 PetriNetUnfolderBase]: For 78881/78881 co-relation queries the response was YES. [2024-06-14 13:58:22,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8794 conditions, 1164 events. 664/1164 cut-off events. For 78881/78881 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5783 event pairs, 78 based on Foata normal form. 2/1166 useless extension candidates. Maximal degree in co-relation 8671. Up to 968 conditions per place. [2024-06-14 13:58:22,786 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 200 selfloop transitions, 58 changer transitions 0/260 dead transitions. [2024-06-14 13:58:22,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 260 transitions, 3536 flow [2024-06-14 13:58:22,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:58:22,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:58:22,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 13:58:22,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-14 13:58:22,788 INFO L175 Difference]: Start difference. First operand has 264 places, 240 transitions, 2916 flow. Second operand 10 states and 116 transitions. [2024-06-14 13:58:22,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 260 transitions, 3536 flow [2024-06-14 13:58:23,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 260 transitions, 3400 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-14 13:58:23,037 INFO L231 Difference]: Finished difference. Result has 265 places, 241 transitions, 2928 flow [2024-06-14 13:58:23,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2780, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2928, PETRI_PLACES=265, PETRI_TRANSITIONS=241} [2024-06-14 13:58:23,037 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 233 predicate places. [2024-06-14 13:58:23,037 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 241 transitions, 2928 flow [2024-06-14 13:58:23,037 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) [2024-06-14 13:58:23,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:58:23,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:58:23,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-14 13:58:23,038 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:58:23,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:58:23,038 INFO L85 PathProgramCache]: Analyzing trace with hash 21961209, now seen corresponding path program 7 times [2024-06-14 13:58:23,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:58:23,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981738916] [2024-06-14 13:58:23,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:58:23,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:58:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:58:27,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:58:27,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:58:27,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981738916] [2024-06-14 13:58:27,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981738916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:58:27,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:58:27,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:58:27,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097428297] [2024-06-14 13:58:27,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:58:27,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:58:27,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:58:27,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:58:27,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:58:27,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:58:27,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 241 transitions, 2928 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) [2024-06-14 13:58:27,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:58:27,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:58:27,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:58:27,818 INFO L124 PetriNetUnfolderBase]: 668/1172 cut-off events. [2024-06-14 13:58:27,818 INFO L125 PetriNetUnfolderBase]: For 79425/79425 co-relation queries the response was YES. [2024-06-14 13:58:27,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8861 conditions, 1172 events. 668/1172 cut-off events. For 79425/79425 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5846 event pairs, 88 based on Foata normal form. 2/1174 useless extension candidates. Maximal degree in co-relation 8738. Up to 1015 conditions per place. [2024-06-14 13:58:27,828 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 212 selfloop transitions, 45 changer transitions 0/259 dead transitions. [2024-06-14 13:58:27,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 259 transitions, 3534 flow [2024-06-14 13:58:27,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:58:27,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:58:27,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-14 13:58:27,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-14 13:58:27,830 INFO L175 Difference]: Start difference. First operand has 265 places, 241 transitions, 2928 flow. Second operand 10 states and 114 transitions. [2024-06-14 13:58:27,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 259 transitions, 3534 flow [2024-06-14 13:58:28,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 259 transitions, 3396 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 13:58:28,090 INFO L231 Difference]: Finished difference. Result has 267 places, 242 transitions, 2914 flow [2024-06-14 13:58:28,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2790, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2914, PETRI_PLACES=267, PETRI_TRANSITIONS=242} [2024-06-14 13:58:28,090 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 235 predicate places. [2024-06-14 13:58:28,090 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 242 transitions, 2914 flow [2024-06-14 13:58:28,090 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) [2024-06-14 13:58:28,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:58:28,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:58:28,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-14 13:58:28,091 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:58:28,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:58:28,091 INFO L85 PathProgramCache]: Analyzing trace with hash 27473691, now seen corresponding path program 4 times [2024-06-14 13:58:28,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:58:28,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800906708] [2024-06-14 13:58:28,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:58:28,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:58:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:58:33,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:58:33,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:58:33,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800906708] [2024-06-14 13:58:33,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800906708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:58:33,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:58:33,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:58:33,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714875446] [2024-06-14 13:58:33,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:58:33,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:58:33,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:58:33,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:58:33,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:58:34,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:58:34,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 242 transitions, 2914 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) [2024-06-14 13:58:34,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:58:34,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:58:34,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:58:34,653 INFO L124 PetriNetUnfolderBase]: 674/1182 cut-off events. [2024-06-14 13:58:34,654 INFO L125 PetriNetUnfolderBase]: For 81475/81475 co-relation queries the response was YES. [2024-06-14 13:58:34,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8910 conditions, 1182 events. 674/1182 cut-off events. For 81475/81475 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5903 event pairs, 80 based on Foata normal form. 2/1184 useless extension candidates. Maximal degree in co-relation 8786. Up to 976 conditions per place. [2024-06-14 13:58:34,665 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 202 selfloop transitions, 61 changer transitions 0/265 dead transitions. [2024-06-14 13:58:34,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 265 transitions, 3582 flow [2024-06-14 13:58:34,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:58:34,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:58:34,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-14 13:58:34,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34710743801652894 [2024-06-14 13:58:34,666 INFO L175 Difference]: Start difference. First operand has 267 places, 242 transitions, 2914 flow. Second operand 11 states and 126 transitions. [2024-06-14 13:58:34,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 265 transitions, 3582 flow [2024-06-14 13:58:34,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 265 transitions, 3468 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-14 13:58:34,919 INFO L231 Difference]: Finished difference. Result has 270 places, 244 transitions, 2979 flow [2024-06-14 13:58:34,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2800, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2979, PETRI_PLACES=270, PETRI_TRANSITIONS=244} [2024-06-14 13:58:34,919 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 238 predicate places. [2024-06-14 13:58:34,919 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 244 transitions, 2979 flow [2024-06-14 13:58:34,919 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) [2024-06-14 13:58:34,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:58:34,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:58:34,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-14 13:58:34,920 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:58:34,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:58:34,921 INFO L85 PathProgramCache]: Analyzing trace with hash 27682941, now seen corresponding path program 5 times [2024-06-14 13:58:34,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:58:34,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168152642] [2024-06-14 13:58:34,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:58:34,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:58:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:58:40,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:58:40,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:58:40,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168152642] [2024-06-14 13:58:40,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168152642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:58:40,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:58:40,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:58:40,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860824313] [2024-06-14 13:58:40,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:58:40,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:58:40,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:58:40,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:58:40,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:58:40,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:58:40,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 244 transitions, 2979 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) [2024-06-14 13:58:40,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:58:40,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:58:40,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:58:41,307 INFO L124 PetriNetUnfolderBase]: 670/1176 cut-off events. [2024-06-14 13:58:41,307 INFO L125 PetriNetUnfolderBase]: For 78591/78591 co-relation queries the response was YES. [2024-06-14 13:58:41,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8760 conditions, 1176 events. 670/1176 cut-off events. For 78591/78591 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5873 event pairs, 77 based on Foata normal form. 2/1178 useless extension candidates. Maximal degree in co-relation 8635. Up to 863 conditions per place. [2024-06-14 13:58:41,319 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 179 selfloop transitions, 87 changer transitions 0/268 dead transitions. [2024-06-14 13:58:41,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 268 transitions, 3761 flow [2024-06-14 13:58:41,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:58:41,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:58:41,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-14 13:58:41,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3608815426997245 [2024-06-14 13:58:41,320 INFO L175 Difference]: Start difference. First operand has 270 places, 244 transitions, 2979 flow. Second operand 11 states and 131 transitions. [2024-06-14 13:58:41,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 268 transitions, 3761 flow [2024-06-14 13:58:41,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 268 transitions, 3564 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-14 13:58:41,551 INFO L231 Difference]: Finished difference. Result has 272 places, 244 transitions, 2962 flow [2024-06-14 13:58:41,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2782, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2962, PETRI_PLACES=272, PETRI_TRANSITIONS=244} [2024-06-14 13:58:41,552 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 240 predicate places. [2024-06-14 13:58:41,552 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 244 transitions, 2962 flow [2024-06-14 13:58:41,552 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) [2024-06-14 13:58:41,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:58:41,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:58:41,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-14 13:58:41,552 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:58:41,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:58:41,553 INFO L85 PathProgramCache]: Analyzing trace with hash 21957489, now seen corresponding path program 8 times [2024-06-14 13:58:41,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:58:41,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257432382] [2024-06-14 13:58:41,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:58:41,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:58:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:58:45,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:58:45,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:58:45,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257432382] [2024-06-14 13:58:45,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257432382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:58:45,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:58:45,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:58:45,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746813390] [2024-06-14 13:58:45,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:58:45,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:58:45,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:58:45,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:58:45,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:58:45,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:58:45,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 244 transitions, 2962 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) [2024-06-14 13:58:45,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:58:45,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:58:45,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:58:46,206 INFO L124 PetriNetUnfolderBase]: 674/1184 cut-off events. [2024-06-14 13:58:46,206 INFO L125 PetriNetUnfolderBase]: For 80462/80462 co-relation queries the response was YES. [2024-06-14 13:58:46,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8838 conditions, 1184 events. 674/1184 cut-off events. For 80462/80462 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5921 event pairs, 87 based on Foata normal form. 2/1186 useless extension candidates. Maximal degree in co-relation 8712. Up to 1027 conditions per place. [2024-06-14 13:58:46,215 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 216 selfloop transitions, 44 changer transitions 0/262 dead transitions. [2024-06-14 13:58:46,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 262 transitions, 3570 flow [2024-06-14 13:58:46,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:58:46,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:58:46,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-14 13:58:46,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-14 13:58:46,216 INFO L175 Difference]: Start difference. First operand has 272 places, 244 transitions, 2962 flow. Second operand 10 states and 113 transitions. [2024-06-14 13:58:46,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 262 transitions, 3570 flow [2024-06-14 13:58:46,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 262 transitions, 3411 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-14 13:58:46,470 INFO L231 Difference]: Finished difference. Result has 273 places, 245 transitions, 2927 flow [2024-06-14 13:58:46,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2803, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2927, PETRI_PLACES=273, PETRI_TRANSITIONS=245} [2024-06-14 13:58:46,471 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 241 predicate places. [2024-06-14 13:58:46,471 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 245 transitions, 2927 flow [2024-06-14 13:58:46,471 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) [2024-06-14 13:58:46,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:58:46,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:58:46,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-14 13:58:46,471 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:58:46,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:58:46,472 INFO L85 PathProgramCache]: Analyzing trace with hash -959865013, now seen corresponding path program 6 times [2024-06-14 13:58:46,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:58:46,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76592523] [2024-06-14 13:58:46,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:58:46,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:58:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:58:52,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:58:52,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:58:52,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76592523] [2024-06-14 13:58:52,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76592523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:58:52,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:58:52,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:58:52,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184828304] [2024-06-14 13:58:52,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:58:52,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:58:52,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:58:52,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:58:52,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:58:52,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:58:52,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 245 transitions, 2927 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) [2024-06-14 13:58:52,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:58:52,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:58:52,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:58:53,020 INFO L124 PetriNetUnfolderBase]: 675/1186 cut-off events. [2024-06-14 13:58:53,021 INFO L125 PetriNetUnfolderBase]: For 80178/80178 co-relation queries the response was YES. [2024-06-14 13:58:53,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8741 conditions, 1186 events. 675/1186 cut-off events. For 80178/80178 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5948 event pairs, 89 based on Foata normal form. 2/1188 useless extension candidates. Maximal degree in co-relation 8614. Up to 1019 conditions per place. [2024-06-14 13:58:53,032 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 216 selfloop transitions, 48 changer transitions 0/266 dead transitions. [2024-06-14 13:58:53,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 266 transitions, 3587 flow [2024-06-14 13:58:53,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:58:53,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:58:53,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-14 13:58:53,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3415977961432507 [2024-06-14 13:58:53,033 INFO L175 Difference]: Start difference. First operand has 273 places, 245 transitions, 2927 flow. Second operand 11 states and 124 transitions. [2024-06-14 13:58:53,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 266 transitions, 3587 flow [2024-06-14 13:58:53,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 266 transitions, 3473 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-14 13:58:53,304 INFO L231 Difference]: Finished difference. Result has 276 places, 247 transitions, 2970 flow [2024-06-14 13:58:53,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2813, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2970, PETRI_PLACES=276, PETRI_TRANSITIONS=247} [2024-06-14 13:58:53,304 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 244 predicate places. [2024-06-14 13:58:53,304 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 247 transitions, 2970 flow [2024-06-14 13:58:53,304 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) [2024-06-14 13:58:53,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:58:53,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:58:53,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-14 13:58:53,305 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:58:53,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:58:53,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1100139507, now seen corresponding path program 1 times [2024-06-14 13:58:53,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:58:53,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273768018] [2024-06-14 13:58:53,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:58:53,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:58:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:58:58,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:58:58,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:58:58,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273768018] [2024-06-14 13:58:58,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273768018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:58:58,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:58:58,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:58:58,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648176633] [2024-06-14 13:58:58,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:58:58,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:58:58,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:58:58,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:58:58,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:58:58,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:58:58,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 247 transitions, 2970 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) [2024-06-14 13:58:58,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:58:58,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:58:58,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:58:59,554 INFO L124 PetriNetUnfolderBase]: 683/1202 cut-off events. [2024-06-14 13:58:59,554 INFO L125 PetriNetUnfolderBase]: For 87647/87647 co-relation queries the response was YES. [2024-06-14 13:58:59,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8811 conditions, 1202 events. 683/1202 cut-off events. For 87647/87647 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6129 event pairs, 150 based on Foata normal form. 4/1206 useless extension candidates. Maximal degree in co-relation 8683. Up to 1093 conditions per place. [2024-06-14 13:58:59,566 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 232 selfloop transitions, 34 changer transitions 0/268 dead transitions. [2024-06-14 13:58:59,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 268 transitions, 3586 flow [2024-06-14 13:58:59,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 13:58:59,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 13:58:59,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-14 13:58:59,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31565656565656564 [2024-06-14 13:58:59,567 INFO L175 Difference]: Start difference. First operand has 276 places, 247 transitions, 2970 flow. Second operand 12 states and 125 transitions. [2024-06-14 13:58:59,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 268 transitions, 3586 flow [2024-06-14 13:58:59,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 268 transitions, 3451 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-14 13:58:59,825 INFO L231 Difference]: Finished difference. Result has 279 places, 248 transitions, 2927 flow [2024-06-14 13:58:59,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2835, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2927, PETRI_PLACES=279, PETRI_TRANSITIONS=248} [2024-06-14 13:58:59,826 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 247 predicate places. [2024-06-14 13:58:59,826 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 248 transitions, 2927 flow [2024-06-14 13:58:59,826 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) [2024-06-14 13:58:59,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:58:59,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:58:59,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-14 13:58:59,826 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:58:59,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:58:59,826 INFO L85 PathProgramCache]: Analyzing trace with hash -922438133, now seen corresponding path program 9 times [2024-06-14 13:58:59,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:58:59,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838157956] [2024-06-14 13:58:59,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:58:59,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:58:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:59:03,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:59:03,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:59:03,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838157956] [2024-06-14 13:59:03,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838157956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:59:03,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:59:03,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:59:03,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435815279] [2024-06-14 13:59:03,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:59:03,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:59:03,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:59:03,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:59:03,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:59:03,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:59:03,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 248 transitions, 2927 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) [2024-06-14 13:59:03,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:59:03,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:59:03,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:59:04,421 INFO L124 PetriNetUnfolderBase]: 687/1210 cut-off events. [2024-06-14 13:59:04,421 INFO L125 PetriNetUnfolderBase]: For 84259/84259 co-relation queries the response was YES. [2024-06-14 13:59:04,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8833 conditions, 1210 events. 687/1210 cut-off events. For 84259/84259 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6128 event pairs, 134 based on Foata normal form. 2/1212 useless extension candidates. Maximal degree in co-relation 8704. Up to 1053 conditions per place. [2024-06-14 13:59:04,433 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 216 selfloop transitions, 46 changer transitions 0/264 dead transitions. [2024-06-14 13:59:04,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 264 transitions, 3531 flow [2024-06-14 13:59:04,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:59:04,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:59:04,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-14 13:59:04,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 13:59:04,434 INFO L175 Difference]: Start difference. First operand has 279 places, 248 transitions, 2927 flow. Second operand 9 states and 99 transitions. [2024-06-14 13:59:04,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 264 transitions, 3531 flow [2024-06-14 13:59:04,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 264 transitions, 3449 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-14 13:59:04,720 INFO L231 Difference]: Finished difference. Result has 278 places, 249 transitions, 2982 flow [2024-06-14 13:59:04,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2845, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2982, PETRI_PLACES=278, PETRI_TRANSITIONS=249} [2024-06-14 13:59:04,720 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 246 predicate places. [2024-06-14 13:59:04,720 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 249 transitions, 2982 flow [2024-06-14 13:59:04,721 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) [2024-06-14 13:59:04,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:59:04,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:59:04,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-14 13:59:04,721 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:59:04,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:59:04,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1002076483, now seen corresponding path program 10 times [2024-06-14 13:59:04,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:59:04,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365072819] [2024-06-14 13:59:04,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:59:04,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:59:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:59:08,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:59:08,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:59:08,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365072819] [2024-06-14 13:59:08,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365072819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:59:08,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:59:08,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:59:08,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579831523] [2024-06-14 13:59:08,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:59:08,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:59:08,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:59:08,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:59:08,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:59:08,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:59:08,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 249 transitions, 2982 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:59:08,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:59:08,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:59:08,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:59:09,413 INFO L124 PetriNetUnfolderBase]: 691/1218 cut-off events. [2024-06-14 13:59:09,413 INFO L125 PetriNetUnfolderBase]: For 87067/87067 co-relation queries the response was YES. [2024-06-14 13:59:09,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8969 conditions, 1218 events. 691/1218 cut-off events. For 87067/87067 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6196 event pairs, 130 based on Foata normal form. 2/1220 useless extension candidates. Maximal degree in co-relation 8839. Up to 1070 conditions per place. [2024-06-14 13:59:09,423 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 226 selfloop transitions, 37 changer transitions 0/265 dead transitions. [2024-06-14 13:59:09,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 265 transitions, 3584 flow [2024-06-14 13:59:09,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:59:09,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:59:09,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-14 13:59:09,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32996632996632996 [2024-06-14 13:59:09,424 INFO L175 Difference]: Start difference. First operand has 278 places, 249 transitions, 2982 flow. Second operand 9 states and 98 transitions. [2024-06-14 13:59:09,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 265 transitions, 3584 flow [2024-06-14 13:59:09,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 265 transitions, 3463 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-14 13:59:09,678 INFO L231 Difference]: Finished difference. Result has 280 places, 250 transitions, 2979 flow [2024-06-14 13:59:09,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2865, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2979, PETRI_PLACES=280, PETRI_TRANSITIONS=250} [2024-06-14 13:59:09,678 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 248 predicate places. [2024-06-14 13:59:09,678 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 250 transitions, 2979 flow [2024-06-14 13:59:09,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:59:09,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:59:09,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:59:09,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-14 13:59:09,678 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:59:09,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:59:09,679 INFO L85 PathProgramCache]: Analyzing trace with hash -53297302, now seen corresponding path program 3 times [2024-06-14 13:59:09,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:59:09,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514051052] [2024-06-14 13:59:09,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:59:09,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:59:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:59:13,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:59:13,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:59:13,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514051052] [2024-06-14 13:59:13,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514051052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:59:13,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:59:13,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:59:13,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918499767] [2024-06-14 13:59:13,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:59:13,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:59:13,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:59:13,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:59:13,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:59:14,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:59:14,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 250 transitions, 2979 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:59:14,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:59:14,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:59:14,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:59:14,529 INFO L124 PetriNetUnfolderBase]: 689/1215 cut-off events. [2024-06-14 13:59:14,530 INFO L125 PetriNetUnfolderBase]: For 78859/78859 co-relation queries the response was YES. [2024-06-14 13:59:14,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8780 conditions, 1215 events. 689/1215 cut-off events. For 78859/78859 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6182 event pairs, 132 based on Foata normal form. 1/1216 useless extension candidates. Maximal degree in co-relation 8649. Up to 1049 conditions per place. [2024-06-14 13:59:14,540 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 208 selfloop transitions, 55 changer transitions 0/265 dead transitions. [2024-06-14 13:59:14,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 265 transitions, 3559 flow [2024-06-14 13:59:14,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:59:14,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:59:14,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-14 13:59:14,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3367003367003367 [2024-06-14 13:59:14,541 INFO L175 Difference]: Start difference. First operand has 280 places, 250 transitions, 2979 flow. Second operand 9 states and 100 transitions. [2024-06-14 13:59:14,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 265 transitions, 3559 flow [2024-06-14 13:59:14,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 265 transitions, 3443 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-14 13:59:14,833 INFO L231 Difference]: Finished difference. Result has 282 places, 250 transitions, 2993 flow [2024-06-14 13:59:14,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2863, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2993, PETRI_PLACES=282, PETRI_TRANSITIONS=250} [2024-06-14 13:59:14,833 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 250 predicate places. [2024-06-14 13:59:14,833 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 250 transitions, 2993 flow [2024-06-14 13:59:14,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:59:14,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:59:14,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:59:14,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-14 13:59:14,834 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:59:14,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:59:14,834 INFO L85 PathProgramCache]: Analyzing trace with hash -931050557, now seen corresponding path program 7 times [2024-06-14 13:59:14,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:59:14,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068562149] [2024-06-14 13:59:14,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:59:14,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:59:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:59:20,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:59:20,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:59:20,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068562149] [2024-06-14 13:59:20,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068562149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:59:20,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:59:20,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:59:20,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995885884] [2024-06-14 13:59:20,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:59:20,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:59:20,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:59:20,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:59:20,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:59:20,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:59:20,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 250 transitions, 2993 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) [2024-06-14 13:59:20,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:59:20,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:59:20,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:59:21,441 INFO L124 PetriNetUnfolderBase]: 695/1225 cut-off events. [2024-06-14 13:59:21,441 INFO L125 PetriNetUnfolderBase]: For 78871/78871 co-relation queries the response was YES. [2024-06-14 13:59:21,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8847 conditions, 1225 events. 695/1225 cut-off events. For 78871/78871 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6235 event pairs, 133 based on Foata normal form. 2/1227 useless extension candidates. Maximal degree in co-relation 8715. Up to 1062 conditions per place. [2024-06-14 13:59:21,454 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 221 selfloop transitions, 46 changer transitions 0/269 dead transitions. [2024-06-14 13:59:21,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 269 transitions, 3641 flow [2024-06-14 13:59:21,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:59:21,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:59:21,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 13:59:21,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-14 13:59:21,456 INFO L175 Difference]: Start difference. First operand has 282 places, 250 transitions, 2993 flow. Second operand 10 states and 109 transitions. [2024-06-14 13:59:21,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 269 transitions, 3641 flow [2024-06-14 13:59:21,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 269 transitions, 3481 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-14 13:59:21,740 INFO L231 Difference]: Finished difference. Result has 283 places, 252 transitions, 2990 flow [2024-06-14 13:59:21,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2833, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2990, PETRI_PLACES=283, PETRI_TRANSITIONS=252} [2024-06-14 13:59:21,741 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 251 predicate places. [2024-06-14 13:59:21,741 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 252 transitions, 2990 flow [2024-06-14 13:59:21,741 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) [2024-06-14 13:59:21,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:59:21,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:59:21,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-14 13:59:21,741 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:59:21,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:59:21,741 INFO L85 PathProgramCache]: Analyzing trace with hash 271786601, now seen corresponding path program 11 times [2024-06-14 13:59:21,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:59:21,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352026486] [2024-06-14 13:59:21,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:59:21,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:59:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:59:25,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:59:25,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:59:25,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352026486] [2024-06-14 13:59:25,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352026486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:59:25,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:59:25,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:59:25,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863978592] [2024-06-14 13:59:25,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:59:25,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:59:25,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:59:25,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:59:25,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:59:26,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:59:26,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 252 transitions, 2990 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) [2024-06-14 13:59:26,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:59:26,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:59:26,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:59:26,592 INFO L124 PetriNetUnfolderBase]: 699/1233 cut-off events. [2024-06-14 13:59:26,592 INFO L125 PetriNetUnfolderBase]: For 77696/77696 co-relation queries the response was YES. [2024-06-14 13:59:26,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8865 conditions, 1233 events. 699/1233 cut-off events. For 77696/77696 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6288 event pairs, 76 based on Foata normal form. 2/1235 useless extension candidates. Maximal degree in co-relation 8733. Up to 995 conditions per place. [2024-06-14 13:59:26,604 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 196 selfloop transitions, 71 changer transitions 0/269 dead transitions. [2024-06-14 13:59:26,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 269 transitions, 3616 flow [2024-06-14 13:59:26,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:59:26,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:59:26,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-14 13:59:26,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3501683501683502 [2024-06-14 13:59:26,605 INFO L175 Difference]: Start difference. First operand has 283 places, 252 transitions, 2990 flow. Second operand 9 states and 104 transitions. [2024-06-14 13:59:26,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 269 transitions, 3616 flow [2024-06-14 13:59:26,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 269 transitions, 3499 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-14 13:59:26,890 INFO L231 Difference]: Finished difference. Result has 284 places, 253 transitions, 3051 flow [2024-06-14 13:59:26,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2873, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3051, PETRI_PLACES=284, PETRI_TRANSITIONS=253} [2024-06-14 13:59:26,891 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 252 predicate places. [2024-06-14 13:59:26,891 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 253 transitions, 3051 flow [2024-06-14 13:59:26,891 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) [2024-06-14 13:59:26,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:59:26,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:59:26,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-14 13:59:26,891 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:59:26,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:59:26,892 INFO L85 PathProgramCache]: Analyzing trace with hash -786950777, now seen corresponding path program 8 times [2024-06-14 13:59:26,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:59:26,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13928866] [2024-06-14 13:59:26,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:59:26,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:59:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:59:32,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:59:32,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:59:32,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13928866] [2024-06-14 13:59:32,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13928866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:59:32,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:59:32,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:59:32,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816192518] [2024-06-14 13:59:32,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:59:32,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:59:32,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:59:32,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:59:32,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:59:32,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:59:32,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 253 transitions, 3051 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) [2024-06-14 13:59:32,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:59:32,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:59:32,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:59:33,464 INFO L124 PetriNetUnfolderBase]: 715/1259 cut-off events. [2024-06-14 13:59:33,464 INFO L125 PetriNetUnfolderBase]: For 85918/85918 co-relation queries the response was YES. [2024-06-14 13:59:33,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9320 conditions, 1259 events. 715/1259 cut-off events. For 85918/85918 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6426 event pairs, 74 based on Foata normal form. 2/1261 useless extension candidates. Maximal degree in co-relation 9187. Up to 817 conditions per place. [2024-06-14 13:59:33,476 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 155 selfloop transitions, 121 changer transitions 0/278 dead transitions. [2024-06-14 13:59:33,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 278 transitions, 3953 flow [2024-06-14 13:59:33,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:59:33,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:59:33,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-14 13:59:33,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-14 13:59:33,478 INFO L175 Difference]: Start difference. First operand has 284 places, 253 transitions, 3051 flow. Second operand 10 states and 119 transitions. [2024-06-14 13:59:33,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 278 transitions, 3953 flow [2024-06-14 13:59:33,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 278 transitions, 3785 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-14 13:59:33,796 INFO L231 Difference]: Finished difference. Result has 287 places, 257 transitions, 3249 flow [2024-06-14 13:59:33,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2885, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3249, PETRI_PLACES=287, PETRI_TRANSITIONS=257} [2024-06-14 13:59:33,796 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 255 predicate places. [2024-06-14 13:59:33,796 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 257 transitions, 3249 flow [2024-06-14 13:59:33,797 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) [2024-06-14 13:59:33,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:59:33,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:59:33,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-14 13:59:33,797 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:59:33,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:59:33,797 INFO L85 PathProgramCache]: Analyzing trace with hash -774238483, now seen corresponding path program 12 times [2024-06-14 13:59:33,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:59:33,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710858834] [2024-06-14 13:59:33,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:59:33,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:59:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:59:37,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:59:37,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:59:37,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710858834] [2024-06-14 13:59:37,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710858834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:59:37,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:59:37,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:59:37,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715997149] [2024-06-14 13:59:37,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:59:37,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:59:37,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:59:37,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:59:37,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:59:37,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:59:37,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 257 transitions, 3249 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:59:37,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:59:37,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:59:37,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:59:38,389 INFO L124 PetriNetUnfolderBase]: 719/1267 cut-off events. [2024-06-14 13:59:38,390 INFO L125 PetriNetUnfolderBase]: For 86068/86068 co-relation queries the response was YES. [2024-06-14 13:59:38,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9520 conditions, 1267 events. 719/1267 cut-off events. For 86068/86068 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6489 event pairs, 100 based on Foata normal form. 2/1269 useless extension candidates. Maximal degree in co-relation 9386. Up to 1096 conditions per place. [2024-06-14 13:59:38,402 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 221 selfloop transitions, 49 changer transitions 0/272 dead transitions. [2024-06-14 13:59:38,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 272 transitions, 3867 flow [2024-06-14 13:59:38,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:59:38,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:59:38,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-14 13:59:38,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3434343434343434 [2024-06-14 13:59:38,404 INFO L175 Difference]: Start difference. First operand has 287 places, 257 transitions, 3249 flow. Second operand 9 states and 102 transitions. [2024-06-14 13:59:38,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 272 transitions, 3867 flow [2024-06-14 13:59:38,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 272 transitions, 3677 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-14 13:59:38,723 INFO L231 Difference]: Finished difference. Result has 289 places, 258 transitions, 3193 flow [2024-06-14 13:59:38,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3059, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3193, PETRI_PLACES=289, PETRI_TRANSITIONS=258} [2024-06-14 13:59:38,723 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 257 predicate places. [2024-06-14 13:59:38,723 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 258 transitions, 3193 flow [2024-06-14 13:59:38,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:59:38,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:59:38,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:59:38,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-14 13:59:38,724 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:59:38,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:59:38,724 INFO L85 PathProgramCache]: Analyzing trace with hash -774242203, now seen corresponding path program 13 times [2024-06-14 13:59:38,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:59:38,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490322259] [2024-06-14 13:59:38,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:59:38,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:59:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:59:42,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:59:42,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:59:42,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490322259] [2024-06-14 13:59:42,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490322259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:59:42,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:59:42,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:59:42,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333803724] [2024-06-14 13:59:42,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:59:42,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:59:42,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:59:42,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:59:42,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:59:42,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:59:42,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 258 transitions, 3193 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) [2024-06-14 13:59:42,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:59:42,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:59:42,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:59:43,554 INFO L124 PetriNetUnfolderBase]: 723/1275 cut-off events. [2024-06-14 13:59:43,554 INFO L125 PetriNetUnfolderBase]: For 85733/85733 co-relation queries the response was YES. [2024-06-14 13:59:43,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9524 conditions, 1275 events. 723/1275 cut-off events. For 85733/85733 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6543 event pairs, 96 based on Foata normal form. 2/1277 useless extension candidates. Maximal degree in co-relation 9389. Up to 1104 conditions per place. [2024-06-14 13:59:43,569 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 224 selfloop transitions, 47 changer transitions 0/273 dead transitions. [2024-06-14 13:59:43,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 273 transitions, 3809 flow [2024-06-14 13:59:43,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:59:43,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:59:43,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-14 13:59:43,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3400673400673401 [2024-06-14 13:59:43,570 INFO L175 Difference]: Start difference. First operand has 289 places, 258 transitions, 3193 flow. Second operand 9 states and 101 transitions. [2024-06-14 13:59:43,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 273 transitions, 3809 flow [2024-06-14 13:59:43,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 273 transitions, 3685 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-14 13:59:43,897 INFO L231 Difference]: Finished difference. Result has 291 places, 259 transitions, 3201 flow [2024-06-14 13:59:43,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3071, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3201, PETRI_PLACES=291, PETRI_TRANSITIONS=259} [2024-06-14 13:59:43,897 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 259 predicate places. [2024-06-14 13:59:43,897 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 259 transitions, 3201 flow [2024-06-14 13:59:43,898 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) [2024-06-14 13:59:43,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:59:43,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:59:43,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-14 13:59:43,898 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:59:43,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:59:43,898 INFO L85 PathProgramCache]: Analyzing trace with hash -792522407, now seen corresponding path program 9 times [2024-06-14 13:59:43,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:59:43,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683241687] [2024-06-14 13:59:43,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:59:43,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:59:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:59:50,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:59:50,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:59:50,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683241687] [2024-06-14 13:59:50,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683241687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:59:50,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:59:50,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:59:50,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608375906] [2024-06-14 13:59:50,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:59:50,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:59:50,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:59:50,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:59:50,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:59:50,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:59:50,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 259 transitions, 3201 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) [2024-06-14 13:59:50,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:59:50,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:59:50,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:59:51,047 INFO L124 PetriNetUnfolderBase]: 729/1285 cut-off events. [2024-06-14 13:59:51,047 INFO L125 PetriNetUnfolderBase]: For 85699/85699 co-relation queries the response was YES. [2024-06-14 13:59:51,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9579 conditions, 1285 events. 729/1285 cut-off events. For 85699/85699 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6636 event pairs, 100 based on Foata normal form. 2/1287 useless extension candidates. Maximal degree in co-relation 9443. Up to 1094 conditions per place. [2024-06-14 13:59:51,060 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 220 selfloop transitions, 55 changer transitions 0/277 dead transitions. [2024-06-14 13:59:51,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 277 transitions, 3871 flow [2024-06-14 13:59:51,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:59:51,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:59:51,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-14 13:59:51,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-14 13:59:51,062 INFO L175 Difference]: Start difference. First operand has 291 places, 259 transitions, 3201 flow. Second operand 10 states and 112 transitions. [2024-06-14 13:59:51,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 277 transitions, 3871 flow [2024-06-14 13:59:51,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 277 transitions, 3753 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-14 13:59:51,407 INFO L231 Difference]: Finished difference. Result has 294 places, 261 transitions, 3259 flow [2024-06-14 13:59:51,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3083, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3259, PETRI_PLACES=294, PETRI_TRANSITIONS=261} [2024-06-14 13:59:51,408 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 262 predicate places. [2024-06-14 13:59:51,408 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 261 transitions, 3259 flow [2024-06-14 13:59:51,408 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) [2024-06-14 13:59:51,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:59:51,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:59:51,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-14 13:59:51,408 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:59:51,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:59:51,409 INFO L85 PathProgramCache]: Analyzing trace with hash -768524191, now seen corresponding path program 10 times [2024-06-14 13:59:51,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:59:51,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557813232] [2024-06-14 13:59:51,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:59:51,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:59:51,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:59:58,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:59:58,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:59:58,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557813232] [2024-06-14 13:59:58,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557813232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:59:58,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:59:58,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:59:58,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207956144] [2024-06-14 13:59:58,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:59:58,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:59:58,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:59:58,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:59:58,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:59:58,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 13:59:58,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 261 transitions, 3259 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) [2024-06-14 13:59:58,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:59:58,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 13:59:58,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:59:59,053 INFO L124 PetriNetUnfolderBase]: 735/1295 cut-off events. [2024-06-14 13:59:59,053 INFO L125 PetriNetUnfolderBase]: For 85762/85762 co-relation queries the response was YES. [2024-06-14 13:59:59,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9679 conditions, 1295 events. 735/1295 cut-off events. For 85762/85762 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6689 event pairs, 76 based on Foata normal form. 2/1297 useless extension candidates. Maximal degree in co-relation 9542. Up to 950 conditions per place. [2024-06-14 13:59:59,066 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 179 selfloop transitions, 101 changer transitions 0/282 dead transitions. [2024-06-14 13:59:59,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 282 transitions, 3963 flow [2024-06-14 13:59:59,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:59:59,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:59:59,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 13:59:59,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-14 13:59:59,067 INFO L175 Difference]: Start difference. First operand has 294 places, 261 transitions, 3259 flow. Second operand 10 states and 116 transitions. [2024-06-14 13:59:59,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 282 transitions, 3963 flow [2024-06-14 13:59:59,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 282 transitions, 3817 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-14 13:59:59,386 INFO L231 Difference]: Finished difference. Result has 296 places, 263 transitions, 3385 flow [2024-06-14 13:59:59,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3113, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3385, PETRI_PLACES=296, PETRI_TRANSITIONS=263} [2024-06-14 13:59:59,387 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 264 predicate places. [2024-06-14 13:59:59,387 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 263 transitions, 3385 flow [2024-06-14 13:59:59,387 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) [2024-06-14 13:59:59,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:59:59,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:59:59,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-14 13:59:59,388 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:59:59,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:59:59,388 INFO L85 PathProgramCache]: Analyzing trace with hash -768726001, now seen corresponding path program 11 times [2024-06-14 13:59:59,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:59:59,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955015354] [2024-06-14 13:59:59,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:59:59,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:59:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:00:04,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:00:04,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:00:04,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955015354] [2024-06-14 14:00:04,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955015354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:00:04,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:00:04,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:00:04,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523115883] [2024-06-14 14:00:04,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:00:04,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:00:04,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:00:04,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:00:04,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:00:05,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:00:05,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 263 transitions, 3385 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) [2024-06-14 14:00:05,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:00:05,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:00:05,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:00:05,676 INFO L124 PetriNetUnfolderBase]: 736/1297 cut-off events. [2024-06-14 14:00:05,676 INFO L125 PetriNetUnfolderBase]: For 85240/85240 co-relation queries the response was YES. [2024-06-14 14:00:05,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9772 conditions, 1297 events. 736/1297 cut-off events. For 85240/85240 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6715 event pairs, 80 based on Foata normal form. 2/1299 useless extension candidates. Maximal degree in co-relation 9634. Up to 1039 conditions per place. [2024-06-14 14:00:05,692 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 204 selfloop transitions, 77 changer transitions 0/283 dead transitions. [2024-06-14 14:00:05,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 283 transitions, 4089 flow [2024-06-14 14:00:05,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:00:05,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:00:05,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-14 14:00:05,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-14 14:00:05,695 INFO L175 Difference]: Start difference. First operand has 296 places, 263 transitions, 3385 flow. Second operand 10 states and 114 transitions. [2024-06-14 14:00:05,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 283 transitions, 4089 flow [2024-06-14 14:00:06,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 283 transitions, 3842 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-14 14:00:06,053 INFO L231 Difference]: Finished difference. Result has 297 places, 265 transitions, 3366 flow [2024-06-14 14:00:06,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3138, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3366, PETRI_PLACES=297, PETRI_TRANSITIONS=265} [2024-06-14 14:00:06,054 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 265 predicate places. [2024-06-14 14:00:06,054 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 265 transitions, 3366 flow [2024-06-14 14:00:06,054 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) [2024-06-14 14:00:06,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:00:06,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:00:06,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-14 14:00:06,054 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:00:06,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:00:06,054 INFO L85 PathProgramCache]: Analyzing trace with hash 272687747, now seen corresponding path program 2 times [2024-06-14 14:00:06,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:00:06,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414050759] [2024-06-14 14:00:06,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:00:06,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:00:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:00:12,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:00:12,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:00:12,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414050759] [2024-06-14 14:00:12,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414050759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:00:12,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:00:12,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:00:12,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461877403] [2024-06-14 14:00:12,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:00:12,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:00:12,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:00:12,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:00:12,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:00:12,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:00:12,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 265 transitions, 3366 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) [2024-06-14 14:00:12,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:00:12,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:00:12,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:00:13,520 INFO L124 PetriNetUnfolderBase]: 744/1314 cut-off events. [2024-06-14 14:00:13,520 INFO L125 PetriNetUnfolderBase]: For 91021/91021 co-relation queries the response was YES. [2024-06-14 14:00:13,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9737 conditions, 1314 events. 744/1314 cut-off events. For 91021/91021 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6879 event pairs, 154 based on Foata normal form. 4/1318 useless extension candidates. Maximal degree in co-relation 9599. Up to 1158 conditions per place. [2024-06-14 14:00:13,534 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 239 selfloop transitions, 43 changer transitions 0/284 dead transitions. [2024-06-14 14:00:13,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 284 transitions, 4010 flow [2024-06-14 14:00:13,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:00:13,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:00:13,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-14 14:00:13,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31955922865013775 [2024-06-14 14:00:13,536 INFO L175 Difference]: Start difference. First operand has 297 places, 265 transitions, 3366 flow. Second operand 11 states and 116 transitions. [2024-06-14 14:00:13,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 284 transitions, 4010 flow [2024-06-14 14:00:13,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 284 transitions, 3812 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-14 14:00:13,815 INFO L231 Difference]: Finished difference. Result has 300 places, 266 transitions, 3282 flow [2024-06-14 14:00:13,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3168, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3282, PETRI_PLACES=300, PETRI_TRANSITIONS=266} [2024-06-14 14:00:13,816 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 268 predicate places. [2024-06-14 14:00:13,816 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 266 transitions, 3282 flow [2024-06-14 14:00:13,816 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) [2024-06-14 14:00:13,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:00:13,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:00:13,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-14 14:00:13,816 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:00:13,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:00:13,817 INFO L85 PathProgramCache]: Analyzing trace with hash -755879267, now seen corresponding path program 14 times [2024-06-14 14:00:13,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:00:13,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542371284] [2024-06-14 14:00:13,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:00:13,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:00:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:00:18,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:00:18,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:00:18,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542371284] [2024-06-14 14:00:18,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542371284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:00:18,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:00:18,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:00:18,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350586013] [2024-06-14 14:00:18,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:00:18,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:00:18,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:00:18,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:00:18,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:00:18,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:00:18,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 266 transitions, 3282 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) [2024-06-14 14:00:18,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:00:18,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:00:18,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:00:18,943 INFO L124 PetriNetUnfolderBase]: 754/1333 cut-off events. [2024-06-14 14:00:18,943 INFO L125 PetriNetUnfolderBase]: For 87334/87334 co-relation queries the response was YES. [2024-06-14 14:00:18,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9739 conditions, 1333 events. 754/1333 cut-off events. For 87334/87334 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6952 event pairs, 117 based on Foata normal form. 2/1335 useless extension candidates. Maximal degree in co-relation 9600. Up to 1170 conditions per place. [2024-06-14 14:00:18,956 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 234 selfloop transitions, 46 changer transitions 0/282 dead transitions. [2024-06-14 14:00:18,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 282 transitions, 3933 flow [2024-06-14 14:00:18,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:00:18,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:00:18,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-14 14:00:18,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 14:00:18,958 INFO L175 Difference]: Start difference. First operand has 300 places, 266 transitions, 3282 flow. Second operand 9 states and 99 transitions. [2024-06-14 14:00:18,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 282 transitions, 3933 flow [2024-06-14 14:00:19,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 282 transitions, 3831 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-14 14:00:19,311 INFO L231 Difference]: Finished difference. Result has 301 places, 269 transitions, 3326 flow [2024-06-14 14:00:19,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3180, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3326, PETRI_PLACES=301, PETRI_TRANSITIONS=269} [2024-06-14 14:00:19,311 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 269 predicate places. [2024-06-14 14:00:19,311 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 269 transitions, 3326 flow [2024-06-14 14:00:19,311 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) [2024-06-14 14:00:19,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:00:19,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:00:19,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-14 14:00:19,312 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:00:19,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:00:19,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1182968225, now seen corresponding path program 15 times [2024-06-14 14:00:19,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:00:19,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928848823] [2024-06-14 14:00:19,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:00:19,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:00:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:00:23,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:00:23,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:00:23,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928848823] [2024-06-14 14:00:23,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928848823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:00:23,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:00:23,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:00:23,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770053406] [2024-06-14 14:00:23,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:00:23,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:00:23,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:00:23,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:00:23,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:00:23,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:00:23,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 269 transitions, 3326 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) [2024-06-14 14:00:23,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:00:23,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:00:23,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:00:24,344 INFO L124 PetriNetUnfolderBase]: 758/1339 cut-off events. [2024-06-14 14:00:24,344 INFO L125 PetriNetUnfolderBase]: For 87736/87736 co-relation queries the response was YES. [2024-06-14 14:00:24,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9809 conditions, 1339 events. 758/1339 cut-off events. For 87736/87736 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7017 event pairs, 120 based on Foata normal form. 2/1341 useless extension candidates. Maximal degree in co-relation 9668. Up to 1182 conditions per place. [2024-06-14 14:00:24,357 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 237 selfloop transitions, 44 changer transitions 0/283 dead transitions. [2024-06-14 14:00:24,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 283 transitions, 3970 flow [2024-06-14 14:00:24,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:00:24,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:00:24,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-14 14:00:24,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3367003367003367 [2024-06-14 14:00:24,359 INFO L175 Difference]: Start difference. First operand has 301 places, 269 transitions, 3326 flow. Second operand 9 states and 100 transitions. [2024-06-14 14:00:24,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 283 transitions, 3970 flow [2024-06-14 14:00:24,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 283 transitions, 3857 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-14 14:00:24,723 INFO L231 Difference]: Finished difference. Result has 304 places, 270 transitions, 3337 flow [2024-06-14 14:00:24,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3213, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3337, PETRI_PLACES=304, PETRI_TRANSITIONS=270} [2024-06-14 14:00:24,724 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 272 predicate places. [2024-06-14 14:00:24,724 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 270 transitions, 3337 flow [2024-06-14 14:00:24,724 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) [2024-06-14 14:00:24,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:00:24,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:00:24,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-14 14:00:24,725 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:00:24,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:00:24,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1228483691, now seen corresponding path program 12 times [2024-06-14 14:00:24,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:00:24,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170233139] [2024-06-14 14:00:24,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:00:24,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:00:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:00:33,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:00:33,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:00:33,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170233139] [2024-06-14 14:00:33,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170233139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:00:33,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:00:33,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:00:33,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971322744] [2024-06-14 14:00:33,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:00:33,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:00:33,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:00:33,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:00:33,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:00:33,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:00:33,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 270 transitions, 3337 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) [2024-06-14 14:00:33,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:00:33,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:00:33,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:00:34,028 INFO L124 PetriNetUnfolderBase]: 774/1365 cut-off events. [2024-06-14 14:00:34,028 INFO L125 PetriNetUnfolderBase]: For 96315/96315 co-relation queries the response was YES. [2024-06-14 14:00:34,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10189 conditions, 1365 events. 774/1365 cut-off events. For 96315/96315 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7175 event pairs, 76 based on Foata normal form. 2/1367 useless extension candidates. Maximal degree in co-relation 10047. Up to 1044 conditions per place. [2024-06-14 14:00:34,042 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 206 selfloop transitions, 87 changer transitions 0/295 dead transitions. [2024-06-14 14:00:34,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 295 transitions, 4287 flow [2024-06-14 14:00:34,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:00:34,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:00:34,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 14:00:34,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 14:00:34,043 INFO L175 Difference]: Start difference. First operand has 304 places, 270 transitions, 3337 flow. Second operand 10 states and 120 transitions. [2024-06-14 14:00:34,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 295 transitions, 4287 flow [2024-06-14 14:00:34,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 295 transitions, 4173 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-14 14:00:34,409 INFO L231 Difference]: Finished difference. Result has 307 places, 274 transitions, 3514 flow [2024-06-14 14:00:34,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3223, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3514, PETRI_PLACES=307, PETRI_TRANSITIONS=274} [2024-06-14 14:00:34,409 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 275 predicate places. [2024-06-14 14:00:34,409 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 274 transitions, 3514 flow [2024-06-14 14:00:34,409 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) [2024-06-14 14:00:34,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:00:34,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:00:34,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-14 14:00:34,410 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:00:34,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:00:34,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1188690236, now seen corresponding path program 2 times [2024-06-14 14:00:34,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:00:34,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718664297] [2024-06-14 14:00:34,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:00:34,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:00:34,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:00:40,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:00:40,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:00:40,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718664297] [2024-06-14 14:00:40,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718664297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:00:40,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:00:40,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:00:40,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615620366] [2024-06-14 14:00:40,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:00:40,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:00:40,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:00:40,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:00:40,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:00:40,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:00:40,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 274 transitions, 3514 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) [2024-06-14 14:00:40,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:00:40,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:00:40,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:00:41,573 INFO L124 PetriNetUnfolderBase]: 772/1362 cut-off events. [2024-06-14 14:00:41,573 INFO L125 PetriNetUnfolderBase]: For 92330/92330 co-relation queries the response was YES. [2024-06-14 14:00:41,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10213 conditions, 1362 events. 772/1362 cut-off events. For 92330/92330 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7185 event pairs, 174 based on Foata normal form. 1/1363 useless extension candidates. Maximal degree in co-relation 10070. Up to 1257 conditions per place. [2024-06-14 14:00:41,588 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 248 selfloop transitions, 35 changer transitions 0/285 dead transitions. [2024-06-14 14:00:41,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 285 transitions, 4116 flow [2024-06-14 14:00:41,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:00:41,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:00:41,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-14 14:00:41,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32996632996632996 [2024-06-14 14:00:41,589 INFO L175 Difference]: Start difference. First operand has 307 places, 274 transitions, 3514 flow. Second operand 9 states and 98 transitions. [2024-06-14 14:00:41,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 285 transitions, 4116 flow [2024-06-14 14:00:41,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 285 transitions, 3945 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-14 14:00:41,942 INFO L231 Difference]: Finished difference. Result has 310 places, 274 transitions, 3423 flow [2024-06-14 14:00:41,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3343, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3423, PETRI_PLACES=310, PETRI_TRANSITIONS=274} [2024-06-14 14:00:41,942 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 278 predicate places. [2024-06-14 14:00:41,943 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 274 transitions, 3423 flow [2024-06-14 14:00:41,943 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) [2024-06-14 14:00:41,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:00:41,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:00:41,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-14 14:00:41,943 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:00:41,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:00:41,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1445113603, now seen corresponding path program 16 times [2024-06-14 14:00:41,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:00:41,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030273355] [2024-06-14 14:00:41,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:00:41,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:00:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:00:46,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:00:46,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:00:46,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030273355] [2024-06-14 14:00:46,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030273355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:00:46,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:00:46,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:00:46,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171790644] [2024-06-14 14:00:46,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:00:46,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:00:46,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:00:46,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:00:46,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:00:46,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:00:46,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 274 transitions, 3423 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) [2024-06-14 14:00:46,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:00:46,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:00:46,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:00:46,825 INFO L124 PetriNetUnfolderBase]: 776/1370 cut-off events. [2024-06-14 14:00:46,825 INFO L125 PetriNetUnfolderBase]: For 97264/97264 co-relation queries the response was YES. [2024-06-14 14:00:46,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10242 conditions, 1370 events. 776/1370 cut-off events. For 97264/97264 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7221 event pairs, 123 based on Foata normal form. 2/1372 useless extension candidates. Maximal degree in co-relation 10097. Up to 1213 conditions per place. [2024-06-14 14:00:46,840 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 243 selfloop transitions, 43 changer transitions 0/288 dead transitions. [2024-06-14 14:00:46,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 288 transitions, 4073 flow [2024-06-14 14:00:46,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:00:46,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:00:46,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-14 14:00:46,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 14:00:46,841 INFO L175 Difference]: Start difference. First operand has 310 places, 274 transitions, 3423 flow. Second operand 9 states and 99 transitions. [2024-06-14 14:00:46,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 288 transitions, 4073 flow [2024-06-14 14:00:47,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 288 transitions, 3933 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-14 14:00:47,253 INFO L231 Difference]: Finished difference. Result has 311 places, 275 transitions, 3407 flow [2024-06-14 14:00:47,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3283, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3407, PETRI_PLACES=311, PETRI_TRANSITIONS=275} [2024-06-14 14:00:47,254 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 279 predicate places. [2024-06-14 14:00:47,254 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 275 transitions, 3407 flow [2024-06-14 14:00:47,254 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) [2024-06-14 14:00:47,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:00:47,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:00:47,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-14 14:00:47,254 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:00:47,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:00:47,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1382629367, now seen corresponding path program 13 times [2024-06-14 14:00:47,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:00:47,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473940414] [2024-06-14 14:00:47,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:00:47,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:00:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:00:53,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:00:53,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:00:53,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473940414] [2024-06-14 14:00:53,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473940414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:00:53,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:00:53,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:00:53,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341288346] [2024-06-14 14:00:53,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:00:53,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:00:53,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:00:53,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:00:53,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:00:53,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:00:53,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 275 transitions, 3407 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) [2024-06-14 14:00:53,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:00:53,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:00:53,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:00:54,014 INFO L124 PetriNetUnfolderBase]: 804/1416 cut-off events. [2024-06-14 14:00:54,014 INFO L125 PetriNetUnfolderBase]: For 104538/104538 co-relation queries the response was YES. [2024-06-14 14:00:54,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10719 conditions, 1416 events. 804/1416 cut-off events. For 104538/104538 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7517 event pairs, 119 based on Foata normal form. 2/1418 useless extension candidates. Maximal degree in co-relation 10573. Up to 1210 conditions per place. [2024-06-14 14:00:54,028 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 245 selfloop transitions, 55 changer transitions 0/302 dead transitions. [2024-06-14 14:00:54,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 302 transitions, 4389 flow [2024-06-14 14:00:54,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:00:54,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:00:54,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 14:00:54,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-14 14:00:54,029 INFO L175 Difference]: Start difference. First operand has 311 places, 275 transitions, 3407 flow. Second operand 10 states and 116 transitions. [2024-06-14 14:00:54,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 302 transitions, 4389 flow [2024-06-14 14:00:54,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 302 transitions, 4275 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-14 14:00:54,459 INFO L231 Difference]: Finished difference. Result has 315 places, 283 transitions, 3563 flow [2024-06-14 14:00:54,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3293, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3563, PETRI_PLACES=315, PETRI_TRANSITIONS=283} [2024-06-14 14:00:54,459 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 283 predicate places. [2024-06-14 14:00:54,459 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 283 transitions, 3563 flow [2024-06-14 14:00:54,459 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) [2024-06-14 14:00:54,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:00:54,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:00:54,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-14 14:00:54,460 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:00:54,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:00:54,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1228491131, now seen corresponding path program 14 times [2024-06-14 14:00:54,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:00:54,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700838183] [2024-06-14 14:00:54,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:00:54,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:00:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:01:00,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:01:00,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:01:00,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700838183] [2024-06-14 14:01:00,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700838183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:01:00,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:01:00,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:01:00,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658575896] [2024-06-14 14:01:00,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:01:00,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:01:00,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:01:00,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:01:00,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:01:00,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:01:00,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 283 transitions, 3563 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) [2024-06-14 14:01:00,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:01:00,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:01:00,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:01:01,270 INFO L124 PetriNetUnfolderBase]: 810/1426 cut-off events. [2024-06-14 14:01:01,270 INFO L125 PetriNetUnfolderBase]: For 107186/107186 co-relation queries the response was YES. [2024-06-14 14:01:01,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10884 conditions, 1426 events. 810/1426 cut-off events. For 107186/107186 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7569 event pairs, 80 based on Foata normal form. 2/1428 useless extension candidates. Maximal degree in co-relation 10736. Up to 1101 conditions per place. [2024-06-14 14:01:01,283 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 215 selfloop transitions, 88 changer transitions 0/305 dead transitions. [2024-06-14 14:01:01,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 305 transitions, 4475 flow [2024-06-14 14:01:01,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:01:01,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:01:01,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 14:01:01,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 14:01:01,284 INFO L175 Difference]: Start difference. First operand has 315 places, 283 transitions, 3563 flow. Second operand 10 states and 120 transitions. [2024-06-14 14:01:01,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 305 transitions, 4475 flow [2024-06-14 14:01:01,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 305 transitions, 4353 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-14 14:01:01,791 INFO L231 Difference]: Finished difference. Result has 320 places, 285 transitions, 3672 flow [2024-06-14 14:01:01,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3441, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3672, PETRI_PLACES=320, PETRI_TRANSITIONS=285} [2024-06-14 14:01:01,792 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 288 predicate places. [2024-06-14 14:01:01,792 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 285 transitions, 3672 flow [2024-06-14 14:01:01,792 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) [2024-06-14 14:01:01,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:01:01,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:01:01,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-14 14:01:01,792 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:01:01,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:01:01,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1382621927, now seen corresponding path program 15 times [2024-06-14 14:01:01,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:01:01,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83409746] [2024-06-14 14:01:01,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:01:01,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:01:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:01:07,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:01:07,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:01:07,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83409746] [2024-06-14 14:01:07,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83409746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:01:07,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:01:07,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:01:07,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876752964] [2024-06-14 14:01:07,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:01:07,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:01:07,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:01:07,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:01:07,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:01:08,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:01:08,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 285 transitions, 3672 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) [2024-06-14 14:01:08,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:01:08,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:01:08,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:01:08,943 INFO L124 PetriNetUnfolderBase]: 816/1436 cut-off events. [2024-06-14 14:01:08,944 INFO L125 PetriNetUnfolderBase]: For 109672/109672 co-relation queries the response was YES. [2024-06-14 14:01:08,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11122 conditions, 1436 events. 816/1436 cut-off events. For 109672/109672 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7632 event pairs, 121 based on Foata normal form. 2/1438 useless extension candidates. Maximal degree in co-relation 10972. Up to 1226 conditions per place. [2024-06-14 14:01:08,959 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 247 selfloop transitions, 56 changer transitions 0/305 dead transitions. [2024-06-14 14:01:08,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 305 transitions, 4572 flow [2024-06-14 14:01:08,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:01:08,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:01:08,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 14:01:08,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-14 14:01:08,960 INFO L175 Difference]: Start difference. First operand has 320 places, 285 transitions, 3672 flow. Second operand 10 states and 116 transitions. [2024-06-14 14:01:08,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 305 transitions, 4572 flow [2024-06-14 14:01:09,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 305 transitions, 4365 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-14 14:01:09,435 INFO L231 Difference]: Finished difference. Result has 323 places, 287 transitions, 3632 flow [2024-06-14 14:01:09,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3465, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3632, PETRI_PLACES=323, PETRI_TRANSITIONS=287} [2024-06-14 14:01:09,435 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 291 predicate places. [2024-06-14 14:01:09,435 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 287 transitions, 3632 flow [2024-06-14 14:01:09,436 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) [2024-06-14 14:01:09,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:01:09,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:01:09,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-14 14:01:09,436 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:01:09,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:01:09,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1228698893, now seen corresponding path program 17 times [2024-06-14 14:01:09,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:01:09,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079999436] [2024-06-14 14:01:09,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:01:09,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:01:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:01:13,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:01:13,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:01:13,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079999436] [2024-06-14 14:01:13,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079999436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:01:13,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:01:13,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:01:13,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263484232] [2024-06-14 14:01:13,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:01:13,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:01:13,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:01:13,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:01:13,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:01:13,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:01:13,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 287 transitions, 3632 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) [2024-06-14 14:01:13,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:01:13,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:01:13,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:01:14,628 INFO L124 PetriNetUnfolderBase]: 820/1444 cut-off events. [2024-06-14 14:01:14,629 INFO L125 PetriNetUnfolderBase]: For 112352/112352 co-relation queries the response was YES. [2024-06-14 14:01:14,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11101 conditions, 1444 events. 820/1444 cut-off events. For 112352/112352 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7677 event pairs, 81 based on Foata normal form. 2/1446 useless extension candidates. Maximal degree in co-relation 10950. Up to 1168 conditions per place. [2024-06-14 14:01:14,643 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 223 selfloop transitions, 78 changer transitions 0/303 dead transitions. [2024-06-14 14:01:14,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 303 transitions, 4332 flow [2024-06-14 14:01:14,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:01:14,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:01:14,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-14 14:01:14,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3468013468013468 [2024-06-14 14:01:14,645 INFO L175 Difference]: Start difference. First operand has 323 places, 287 transitions, 3632 flow. Second operand 9 states and 103 transitions. [2024-06-14 14:01:14,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 303 transitions, 4332 flow [2024-06-14 14:01:15,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 303 transitions, 4195 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-14 14:01:15,137 INFO L231 Difference]: Finished difference. Result has 326 places, 288 transitions, 3691 flow [2024-06-14 14:01:15,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3495, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3691, PETRI_PLACES=326, PETRI_TRANSITIONS=288} [2024-06-14 14:01:15,137 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 294 predicate places. [2024-06-14 14:01:15,137 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 288 transitions, 3691 flow [2024-06-14 14:01:15,137 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) [2024-06-14 14:01:15,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:01:15,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:01:15,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-14 14:01:15,138 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:01:15,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:01:15,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1183118327, now seen corresponding path program 16 times [2024-06-14 14:01:15,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:01:15,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154118967] [2024-06-14 14:01:15,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:01:15,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:01:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:01:21,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:01:21,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:01:21,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154118967] [2024-06-14 14:01:21,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154118967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:01:21,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:01:21,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:01:21,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117323286] [2024-06-14 14:01:21,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:01:21,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:01:21,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:01:21,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:01:21,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:01:21,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:01:21,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 288 transitions, 3691 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) [2024-06-14 14:01:21,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:01:21,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:01:21,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:01:22,277 INFO L124 PetriNetUnfolderBase]: 826/1454 cut-off events. [2024-06-14 14:01:22,277 INFO L125 PetriNetUnfolderBase]: For 115349/115349 co-relation queries the response was YES. [2024-06-14 14:01:22,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11265 conditions, 1454 events. 826/1454 cut-off events. For 115349/115349 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7772 event pairs, 136 based on Foata normal form. 2/1456 useless extension candidates. Maximal degree in co-relation 11113. Up to 1287 conditions per place. [2024-06-14 14:01:22,296 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 256 selfloop transitions, 47 changer transitions 0/305 dead transitions. [2024-06-14 14:01:22,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 305 transitions, 4427 flow [2024-06-14 14:01:22,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:01:22,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:01:22,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-14 14:01:22,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 14:01:22,297 INFO L175 Difference]: Start difference. First operand has 326 places, 288 transitions, 3691 flow. Second operand 10 states and 110 transitions. [2024-06-14 14:01:22,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 305 transitions, 4427 flow [2024-06-14 14:01:22,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 305 transitions, 4241 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-14 14:01:22,866 INFO L231 Difference]: Finished difference. Result has 329 places, 290 transitions, 3670 flow [2024-06-14 14:01:22,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3505, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3670, PETRI_PLACES=329, PETRI_TRANSITIONS=290} [2024-06-14 14:01:22,866 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 297 predicate places. [2024-06-14 14:01:22,866 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 290 transitions, 3670 flow [2024-06-14 14:01:22,866 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) [2024-06-14 14:01:22,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:01:22,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:01:22,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-14 14:01:22,867 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:01:22,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:01:22,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1382420117, now seen corresponding path program 17 times [2024-06-14 14:01:22,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:01:22,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398406467] [2024-06-14 14:01:22,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:01:22,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:01:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:01:28,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:01:28,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:01:28,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398406467] [2024-06-14 14:01:28,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398406467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:01:28,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:01:28,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:01:28,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038512868] [2024-06-14 14:01:28,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:01:28,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:01:28,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:01:28,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:01:28,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:01:29,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:01:29,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 290 transitions, 3670 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) [2024-06-14 14:01:29,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:01:29,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:01:29,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:01:29,759 INFO L124 PetriNetUnfolderBase]: 822/1448 cut-off events. [2024-06-14 14:01:29,760 INFO L125 PetriNetUnfolderBase]: For 110425/110425 co-relation queries the response was YES. [2024-06-14 14:01:29,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10960 conditions, 1448 events. 822/1448 cut-off events. For 110425/110425 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7744 event pairs, 129 based on Foata normal form. 2/1450 useless extension candidates. Maximal degree in co-relation 10807. Up to 1277 conditions per place. [2024-06-14 14:01:29,776 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 254 selfloop transitions, 49 changer transitions 0/305 dead transitions. [2024-06-14 14:01:29,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 305 transitions, 4342 flow [2024-06-14 14:01:29,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:01:29,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:01:29,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 14:01:29,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-14 14:01:29,777 INFO L175 Difference]: Start difference. First operand has 329 places, 290 transitions, 3670 flow. Second operand 10 states and 109 transitions. [2024-06-14 14:01:29,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 305 transitions, 4342 flow [2024-06-14 14:01:30,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 305 transitions, 4153 flow, removed 49 selfloop flow, removed 8 redundant places. [2024-06-14 14:01:30,329 INFO L231 Difference]: Finished difference. Result has 331 places, 290 transitions, 3584 flow [2024-06-14 14:01:30,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3481, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3584, PETRI_PLACES=331, PETRI_TRANSITIONS=290} [2024-06-14 14:01:30,329 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 299 predicate places. [2024-06-14 14:01:30,330 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 290 transitions, 3584 flow [2024-06-14 14:01:30,330 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) [2024-06-14 14:01:30,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:01:30,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:01:30,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-14 14:01:30,330 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:01:30,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:01:30,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1188474755, now seen corresponding path program 18 times [2024-06-14 14:01:30,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:01:30,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329600099] [2024-06-14 14:01:30,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:01:30,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:01:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:01:34,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:01:34,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:01:34,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329600099] [2024-06-14 14:01:34,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329600099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:01:34,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:01:34,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:01:34,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590824942] [2024-06-14 14:01:34,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:01:34,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:01:34,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:01:34,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:01:34,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:01:34,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:01:34,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 290 transitions, 3584 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) [2024-06-14 14:01:34,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:01:34,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:01:34,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:01:35,099 INFO L124 PetriNetUnfolderBase]: 819/1443 cut-off events. [2024-06-14 14:01:35,099 INFO L125 PetriNetUnfolderBase]: For 104976/104976 co-relation queries the response was YES. [2024-06-14 14:01:35,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10653 conditions, 1443 events. 819/1443 cut-off events. For 104976/104976 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7701 event pairs, 128 based on Foata normal form. 2/1445 useless extension candidates. Maximal degree in co-relation 10499. Up to 1259 conditions per place. [2024-06-14 14:01:35,117 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 251 selfloop transitions, 52 changer transitions 0/305 dead transitions. [2024-06-14 14:01:35,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 305 transitions, 4256 flow [2024-06-14 14:01:35,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:01:35,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:01:35,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-14 14:01:35,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3501683501683502 [2024-06-14 14:01:35,119 INFO L175 Difference]: Start difference. First operand has 331 places, 290 transitions, 3584 flow. Second operand 9 states and 104 transitions. [2024-06-14 14:01:35,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 305 transitions, 4256 flow [2024-06-14 14:01:35,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 305 transitions, 4145 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 14:01:35,660 INFO L231 Difference]: Finished difference. Result has 331 places, 290 transitions, 3583 flow [2024-06-14 14:01:35,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3473, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3583, PETRI_PLACES=331, PETRI_TRANSITIONS=290} [2024-06-14 14:01:35,660 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 299 predicate places. [2024-06-14 14:01:35,660 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 290 transitions, 3583 flow [2024-06-14 14:01:35,661 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) [2024-06-14 14:01:35,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:01:35,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:01:35,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-14 14:01:35,661 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:01:35,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:01:35,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1390048597, now seen corresponding path program 3 times [2024-06-14 14:01:35,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:01:35,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317993191] [2024-06-14 14:01:35,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:01:35,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:01:35,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:01:42,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:01:42,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:01:42,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317993191] [2024-06-14 14:01:42,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317993191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:01:42,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:01:42,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:01:42,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206729490] [2024-06-14 14:01:42,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:01:42,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:01:42,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:01:42,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:01:42,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:01:42,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:01:42,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 290 transitions, 3583 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) [2024-06-14 14:01:42,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:01:42,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:01:42,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:01:42,941 INFO L124 PetriNetUnfolderBase]: 827/1459 cut-off events. [2024-06-14 14:01:42,941 INFO L125 PetriNetUnfolderBase]: For 114723/114723 co-relation queries the response was YES. [2024-06-14 14:01:42,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10758 conditions, 1459 events. 827/1459 cut-off events. For 114723/114723 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7850 event pairs, 183 based on Foata normal form. 4/1463 useless extension candidates. Maximal degree in co-relation 10603. Up to 1350 conditions per place. [2024-06-14 14:01:42,954 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 272 selfloop transitions, 34 changer transitions 0/308 dead transitions. [2024-06-14 14:01:42,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 308 transitions, 4278 flow [2024-06-14 14:01:42,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 14:01:42,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 14:01:42,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-14 14:01:42,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30808080808080807 [2024-06-14 14:01:42,955 INFO L175 Difference]: Start difference. First operand has 331 places, 290 transitions, 3583 flow. Second operand 12 states and 122 transitions. [2024-06-14 14:01:42,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 308 transitions, 4278 flow [2024-06-14 14:01:43,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 308 transitions, 4080 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-14 14:01:43,482 INFO L231 Difference]: Finished difference. Result has 335 places, 291 transitions, 3479 flow [2024-06-14 14:01:43,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3385, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3479, PETRI_PLACES=335, PETRI_TRANSITIONS=291} [2024-06-14 14:01:43,482 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 303 predicate places. [2024-06-14 14:01:43,482 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 291 transitions, 3479 flow [2024-06-14 14:01:43,482 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) [2024-06-14 14:01:43,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:01:43,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:01:43,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-14 14:01:43,483 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:01:43,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:01:43,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1188480707, now seen corresponding path program 18 times [2024-06-14 14:01:43,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:01:43,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495873780] [2024-06-14 14:01:43,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:01:43,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:01:43,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:01:49,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:01:49,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:01:49,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495873780] [2024-06-14 14:01:49,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495873780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:01:49,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:01:49,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:01:49,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791336061] [2024-06-14 14:01:49,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:01:49,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:01:49,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:01:49,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:01:49,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:01:49,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:01:49,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 291 transitions, 3479 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) [2024-06-14 14:01:49,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:01:49,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:01:49,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:01:49,940 INFO L124 PetriNetUnfolderBase]: 833/1469 cut-off events. [2024-06-14 14:01:49,940 INFO L125 PetriNetUnfolderBase]: For 107301/107301 co-relation queries the response was YES. [2024-06-14 14:01:49,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10687 conditions, 1469 events. 833/1469 cut-off events. For 107301/107301 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7886 event pairs, 128 based on Foata normal form. 2/1471 useless extension candidates. Maximal degree in co-relation 10531. Up to 1265 conditions per place. [2024-06-14 14:01:49,958 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 250 selfloop transitions, 58 changer transitions 0/310 dead transitions. [2024-06-14 14:01:49,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 310 transitions, 4243 flow [2024-06-14 14:01:49,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:01:49,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:01:49,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-14 14:01:49,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-14 14:01:49,959 INFO L175 Difference]: Start difference. First operand has 335 places, 291 transitions, 3479 flow. Second operand 10 states and 114 transitions. [2024-06-14 14:01:49,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 310 transitions, 4243 flow [2024-06-14 14:01:50,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 310 transitions, 4076 flow, removed 15 selfloop flow, removed 12 redundant places. [2024-06-14 14:01:50,459 INFO L231 Difference]: Finished difference. Result has 333 places, 293 transitions, 3506 flow [2024-06-14 14:01:50,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3314, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3506, PETRI_PLACES=333, PETRI_TRANSITIONS=293} [2024-06-14 14:01:50,459 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 301 predicate places. [2024-06-14 14:01:50,459 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 293 transitions, 3506 flow [2024-06-14 14:01:50,459 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) [2024-06-14 14:01:50,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:01:50,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:01:50,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-14 14:01:50,459 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:01:50,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:01:50,460 INFO L85 PathProgramCache]: Analyzing trace with hash -966543843, now seen corresponding path program 19 times [2024-06-14 14:01:50,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:01:50,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657884347] [2024-06-14 14:01:50,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:01:50,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:01:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:01:56,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:01:56,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:01:56,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657884347] [2024-06-14 14:01:56,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657884347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:01:56,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:01:56,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:01:56,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38003702] [2024-06-14 14:01:56,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:01:56,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:01:56,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:01:56,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:01:56,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:01:56,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:01:56,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 293 transitions, 3506 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) [2024-06-14 14:01:56,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:01:56,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:01:56,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:01:57,640 INFO L124 PetriNetUnfolderBase]: 829/1465 cut-off events. [2024-06-14 14:01:57,640 INFO L125 PetriNetUnfolderBase]: For 102067/102067 co-relation queries the response was YES. [2024-06-14 14:01:57,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10341 conditions, 1465 events. 829/1465 cut-off events. For 102067/102067 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7870 event pairs, 81 based on Foata normal form. 2/1467 useless extension candidates. Maximal degree in co-relation 10187. Up to 1177 conditions per place. [2024-06-14 14:01:57,659 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 227 selfloop transitions, 81 changer transitions 0/310 dead transitions. [2024-06-14 14:01:57,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 310 transitions, 4202 flow [2024-06-14 14:01:57,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:01:57,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:01:57,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-14 14:01:57,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-14 14:01:57,660 INFO L175 Difference]: Start difference. First operand has 333 places, 293 transitions, 3506 flow. Second operand 10 states and 113 transitions. [2024-06-14 14:01:57,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 310 transitions, 4202 flow [2024-06-14 14:01:58,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 310 transitions, 3991 flow, removed 49 selfloop flow, removed 9 redundant places. [2024-06-14 14:01:58,168 INFO L231 Difference]: Finished difference. Result has 334 places, 293 transitions, 3462 flow [2024-06-14 14:01:58,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3295, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3462, PETRI_PLACES=334, PETRI_TRANSITIONS=293} [2024-06-14 14:01:58,169 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 302 predicate places. [2024-06-14 14:01:58,169 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 293 transitions, 3462 flow [2024-06-14 14:01:58,169 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) [2024-06-14 14:01:58,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:01:58,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:01:58,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-14 14:01:58,169 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:01:58,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:01:58,169 INFO L85 PathProgramCache]: Analyzing trace with hash -958915363, now seen corresponding path program 4 times [2024-06-14 14:01:58,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:01:58,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942766704] [2024-06-14 14:01:58,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:01:58,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:01:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:02:06,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:02:06,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:02:06,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942766704] [2024-06-14 14:02:06,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942766704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:02:06,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:02:06,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:02:06,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117351882] [2024-06-14 14:02:06,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:02:06,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:02:06,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:02:06,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:02:06,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:02:06,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:02:06,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 293 transitions, 3462 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) [2024-06-14 14:02:06,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:02:06,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:02:06,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:02:06,947 INFO L124 PetriNetUnfolderBase]: 837/1481 cut-off events. [2024-06-14 14:02:06,948 INFO L125 PetriNetUnfolderBase]: For 108755/108755 co-relation queries the response was YES. [2024-06-14 14:02:06,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10353 conditions, 1481 events. 837/1481 cut-off events. For 108755/108755 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8028 event pairs, 156 based on Foata normal form. 4/1485 useless extension candidates. Maximal degree in co-relation 10199. Up to 1340 conditions per place. [2024-06-14 14:02:06,964 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 266 selfloop transitions, 43 changer transitions 0/311 dead transitions. [2024-06-14 14:02:06,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 311 transitions, 4160 flow [2024-06-14 14:02:06,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:02:06,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:02:06,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-14 14:02:06,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31955922865013775 [2024-06-14 14:02:06,965 INFO L175 Difference]: Start difference. First operand has 334 places, 293 transitions, 3462 flow. Second operand 11 states and 116 transitions. [2024-06-14 14:02:06,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 311 transitions, 4160 flow [2024-06-14 14:02:07,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 311 transitions, 3982 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-14 14:02:07,458 INFO L231 Difference]: Finished difference. Result has 335 places, 294 transitions, 3396 flow [2024-06-14 14:02:07,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3284, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3396, PETRI_PLACES=335, PETRI_TRANSITIONS=294} [2024-06-14 14:02:07,458 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 303 predicate places. [2024-06-14 14:02:07,458 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 294 transitions, 3396 flow [2024-06-14 14:02:07,458 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) [2024-06-14 14:02:07,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:02:07,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:02:07,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-14 14:02:07,458 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:02:07,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:02:07,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1450839055, now seen corresponding path program 20 times [2024-06-14 14:02:07,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:02:07,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543754417] [2024-06-14 14:02:07,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:02:07,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:02:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:02:13,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:02:13,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:02:13,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543754417] [2024-06-14 14:02:13,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543754417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:02:13,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:02:13,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:02:13,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424546982] [2024-06-14 14:02:13,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:02:13,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:02:13,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:02:13,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:02:13,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:02:13,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:02:13,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 294 transitions, 3396 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) [2024-06-14 14:02:13,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:02:13,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:02:13,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:02:14,117 INFO L124 PetriNetUnfolderBase]: 853/1507 cut-off events. [2024-06-14 14:02:14,118 INFO L125 PetriNetUnfolderBase]: For 112530/112530 co-relation queries the response was YES. [2024-06-14 14:02:14,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10728 conditions, 1507 events. 853/1507 cut-off events. For 112530/112530 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8148 event pairs, 125 based on Foata normal form. 2/1509 useless extension candidates. Maximal degree in co-relation 10573. Up to 1220 conditions per place. [2024-06-14 14:02:14,135 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 238 selfloop transitions, 78 changer transitions 0/318 dead transitions. [2024-06-14 14:02:14,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 318 transitions, 4436 flow [2024-06-14 14:02:14,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:02:14,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:02:14,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-14 14:02:14,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-14 14:02:14,136 INFO L175 Difference]: Start difference. First operand has 335 places, 294 transitions, 3396 flow. Second operand 10 states and 119 transitions. [2024-06-14 14:02:14,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 318 transitions, 4436 flow [2024-06-14 14:02:14,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 318 transitions, 4334 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-14 14:02:14,687 INFO L231 Difference]: Finished difference. Result has 336 places, 298 transitions, 3598 flow [2024-06-14 14:02:14,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3294, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3598, PETRI_PLACES=336, PETRI_TRANSITIONS=298} [2024-06-14 14:02:14,687 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 304 predicate places. [2024-06-14 14:02:14,688 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 298 transitions, 3598 flow [2024-06-14 14:02:14,688 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) [2024-06-14 14:02:14,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:02:14,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:02:14,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-14 14:02:14,688 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:02:14,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:02:14,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1450831615, now seen corresponding path program 21 times [2024-06-14 14:02:14,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:02:14,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069070360] [2024-06-14 14:02:14,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:02:14,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:02:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:02:20,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:02:20,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:02:20,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069070360] [2024-06-14 14:02:20,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069070360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:02:20,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:02:20,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:02:20,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132562465] [2024-06-14 14:02:20,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:02:20,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:02:20,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:02:20,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:02:20,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:02:20,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:02:20,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 298 transitions, 3598 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) [2024-06-14 14:02:20,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:02:20,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:02:20,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:02:21,494 INFO L124 PetriNetUnfolderBase]: 849/1501 cut-off events. [2024-06-14 14:02:21,494 INFO L125 PetriNetUnfolderBase]: For 107461/107461 co-relation queries the response was YES. [2024-06-14 14:02:21,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10629 conditions, 1501 events. 849/1501 cut-off events. For 107461/107461 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8129 event pairs, 125 based on Foata normal form. 2/1503 useless extension candidates. Maximal degree in co-relation 10473. Up to 1217 conditions per place. [2024-06-14 14:02:21,511 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 239 selfloop transitions, 75 changer transitions 0/316 dead transitions. [2024-06-14 14:02:21,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 316 transitions, 4314 flow [2024-06-14 14:02:21,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:02:21,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:02:21,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 14:02:21,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575757575757576 [2024-06-14 14:02:21,512 INFO L175 Difference]: Start difference. First operand has 336 places, 298 transitions, 3598 flow. Second operand 10 states and 118 transitions. [2024-06-14 14:02:21,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 316 transitions, 4314 flow [2024-06-14 14:02:21,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 316 transitions, 4117 flow, removed 58 selfloop flow, removed 7 redundant places. [2024-06-14 14:02:21,997 INFO L231 Difference]: Finished difference. Result has 339 places, 298 transitions, 3559 flow [2024-06-14 14:02:21,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3401, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3559, PETRI_PLACES=339, PETRI_TRANSITIONS=298} [2024-06-14 14:02:21,997 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 307 predicate places. [2024-06-14 14:02:21,997 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 298 transitions, 3559 flow [2024-06-14 14:02:21,997 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) [2024-06-14 14:02:21,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:02:21,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:02:21,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-14 14:02:21,997 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:02:21,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:02:21,998 INFO L85 PathProgramCache]: Analyzing trace with hash -709834083, now seen corresponding path program 22 times [2024-06-14 14:02:21,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:02:21,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005103076] [2024-06-14 14:02:21,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:02:21,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:02:22,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:02:27,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:02:27,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:02:27,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005103076] [2024-06-14 14:02:27,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005103076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:02:27,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:02:27,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:02:27,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64036282] [2024-06-14 14:02:27,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:02:27,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:02:27,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:02:27,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:02:27,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:02:27,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:02:27,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 298 transitions, 3559 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) [2024-06-14 14:02:27,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:02:27,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:02:27,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:02:28,215 INFO L124 PetriNetUnfolderBase]: 875/1543 cut-off events. [2024-06-14 14:02:28,215 INFO L125 PetriNetUnfolderBase]: For 123449/123449 co-relation queries the response was YES. [2024-06-14 14:02:28,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11367 conditions, 1543 events. 875/1543 cut-off events. For 123449/123449 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8377 event pairs, 76 based on Foata normal form. 2/1545 useless extension candidates. Maximal degree in co-relation 11210. Up to 625 conditions per place. [2024-06-14 14:02:28,233 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 183 selfloop transitions, 145 changer transitions 0/330 dead transitions. [2024-06-14 14:02:28,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 330 transitions, 5113 flow [2024-06-14 14:02:28,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:02:28,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:02:28,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 14:02:28,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38484848484848483 [2024-06-14 14:02:28,234 INFO L175 Difference]: Start difference. First operand has 339 places, 298 transitions, 3559 flow. Second operand 10 states and 127 transitions. [2024-06-14 14:02:28,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 330 transitions, 5113 flow [2024-06-14 14:02:28,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 330 transitions, 4927 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-14 14:02:28,772 INFO L231 Difference]: Finished difference. Result has 339 places, 307 transitions, 3938 flow [2024-06-14 14:02:28,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3379, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3938, PETRI_PLACES=339, PETRI_TRANSITIONS=307} [2024-06-14 14:02:28,772 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 307 predicate places. [2024-06-14 14:02:28,772 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 307 transitions, 3938 flow [2024-06-14 14:02:28,772 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) [2024-06-14 14:02:28,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:02:28,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:02:28,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-14 14:02:28,773 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:02:28,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:02:28,773 INFO L85 PathProgramCache]: Analyzing trace with hash -711030815, now seen corresponding path program 23 times [2024-06-14 14:02:28,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:02:28,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426245998] [2024-06-14 14:02:28,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:02:28,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:02:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:02:34,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:02:34,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:02:34,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426245998] [2024-06-14 14:02:34,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426245998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:02:34,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:02:34,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:02:34,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330829110] [2024-06-14 14:02:34,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:02:34,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:02:34,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:02:34,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:02:34,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:02:34,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:02:34,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 307 transitions, 3938 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) [2024-06-14 14:02:34,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:02:34,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:02:34,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:02:35,218 INFO L124 PetriNetUnfolderBase]: 871/1537 cut-off events. [2024-06-14 14:02:35,218 INFO L125 PetriNetUnfolderBase]: For 116126/116126 co-relation queries the response was YES. [2024-06-14 14:02:35,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11299 conditions, 1537 events. 871/1537 cut-off events. For 116126/116126 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8349 event pairs, 78 based on Foata normal form. 2/1539 useless extension candidates. Maximal degree in co-relation 11142. Up to 624 conditions per place. [2024-06-14 14:02:35,232 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 181 selfloop transitions, 144 changer transitions 0/327 dead transitions. [2024-06-14 14:02:35,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 327 transitions, 5034 flow [2024-06-14 14:02:35,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:02:35,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:02:35,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 14:02:35,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37575757575757573 [2024-06-14 14:02:35,233 INFO L175 Difference]: Start difference. First operand has 339 places, 307 transitions, 3938 flow. Second operand 10 states and 124 transitions. [2024-06-14 14:02:35,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 327 transitions, 5034 flow [2024-06-14 14:02:35,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 327 transitions, 4780 flow, removed 77 selfloop flow, removed 4 redundant places. [2024-06-14 14:02:35,718 INFO L231 Difference]: Finished difference. Result has 345 places, 307 transitions, 3977 flow [2024-06-14 14:02:35,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3684, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3977, PETRI_PLACES=345, PETRI_TRANSITIONS=307} [2024-06-14 14:02:35,718 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 313 predicate places. [2024-06-14 14:02:35,718 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 307 transitions, 3977 flow [2024-06-14 14:02:35,719 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) [2024-06-14 14:02:35,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:02:35,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:02:35,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-14 14:02:35,719 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:02:35,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:02:35,719 INFO L85 PathProgramCache]: Analyzing trace with hash -386012865, now seen corresponding path program 5 times [2024-06-14 14:02:35,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:02:35,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202079583] [2024-06-14 14:02:35,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:02:35,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:02:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:02:40,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:02:40,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:02:40,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202079583] [2024-06-14 14:02:40,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202079583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:02:40,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:02:40,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:02:40,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064348712] [2024-06-14 14:02:40,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:02:40,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:02:40,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:02:40,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:02:40,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:02:40,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:02:40,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 307 transitions, 3977 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:02:40,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:02:40,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:02:40,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:02:40,973 INFO L124 PetriNetUnfolderBase]: 879/1551 cut-off events. [2024-06-14 14:02:40,974 INFO L125 PetriNetUnfolderBase]: For 125192/125192 co-relation queries the response was YES. [2024-06-14 14:02:40,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11459 conditions, 1551 events. 879/1551 cut-off events. For 125192/125192 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8464 event pairs, 290 based on Foata normal form. 4/1555 useless extension candidates. Maximal degree in co-relation 11300. Up to 1487 conditions per place. [2024-06-14 14:02:40,994 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 299 selfloop transitions, 21 changer transitions 0/322 dead transitions. [2024-06-14 14:02:40,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 322 transitions, 4681 flow [2024-06-14 14:02:40,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:02:40,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:02:40,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-14 14:02:40,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2024-06-14 14:02:40,995 INFO L175 Difference]: Start difference. First operand has 345 places, 307 transitions, 3977 flow. Second operand 11 states and 110 transitions. [2024-06-14 14:02:40,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 322 transitions, 4681 flow [2024-06-14 14:02:41,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 322 transitions, 4382 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-14 14:02:41,482 INFO L231 Difference]: Finished difference. Result has 347 places, 308 transitions, 3748 flow [2024-06-14 14:02:41,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3678, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3748, PETRI_PLACES=347, PETRI_TRANSITIONS=308} [2024-06-14 14:02:41,482 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 315 predicate places. [2024-06-14 14:02:41,482 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 308 transitions, 3748 flow [2024-06-14 14:02:41,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:02:41,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:02:41,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:02:41,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-14 14:02:41,483 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:02:41,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:02:41,483 INFO L85 PathProgramCache]: Analyzing trace with hash -710753985, now seen corresponding path program 6 times [2024-06-14 14:02:41,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:02:41,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365236276] [2024-06-14 14:02:41,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:02:41,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:02:41,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:02:46,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:02:46,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:02:46,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365236276] [2024-06-14 14:02:46,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365236276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:02:46,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:02:46,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:02:46,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667905819] [2024-06-14 14:02:46,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:02:46,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:02:46,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:02:46,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:02:46,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:02:46,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:02:46,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 308 transitions, 3748 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) [2024-06-14 14:02:46,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:02:46,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:02:46,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:02:47,378 INFO L124 PetriNetUnfolderBase]: 887/1569 cut-off events. [2024-06-14 14:02:47,378 INFO L125 PetriNetUnfolderBase]: For 126945/126945 co-relation queries the response was YES. [2024-06-14 14:02:47,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11239 conditions, 1569 events. 887/1569 cut-off events. For 126945/126945 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8610 event pairs, 151 based on Foata normal form. 4/1573 useless extension candidates. Maximal degree in co-relation 11079. Up to 1279 conditions per place. [2024-06-14 14:02:47,395 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 247 selfloop transitions, 77 changer transitions 0/326 dead transitions. [2024-06-14 14:02:47,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 326 transitions, 4480 flow [2024-06-14 14:02:47,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:02:47,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:02:47,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-14 14:02:47,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 14:02:47,396 INFO L175 Difference]: Start difference. First operand has 347 places, 308 transitions, 3748 flow. Second operand 11 states and 121 transitions. [2024-06-14 14:02:47,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 326 transitions, 4480 flow [2024-06-14 14:02:47,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 326 transitions, 4420 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-14 14:02:47,871 INFO L231 Difference]: Finished difference. Result has 349 places, 309 transitions, 3872 flow [2024-06-14 14:02:47,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3688, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3872, PETRI_PLACES=349, PETRI_TRANSITIONS=309} [2024-06-14 14:02:47,872 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 317 predicate places. [2024-06-14 14:02:47,872 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 309 transitions, 3872 flow [2024-06-14 14:02:47,872 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) [2024-06-14 14:02:47,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:02:47,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:02:47,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-14 14:02:47,872 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:02:47,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:02:47,872 INFO L85 PathProgramCache]: Analyzing trace with hash -385626915, now seen corresponding path program 7 times [2024-06-14 14:02:47,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:02:47,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459697893] [2024-06-14 14:02:47,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:02:47,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:02:47,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:02:52,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:02:52,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:02:52,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459697893] [2024-06-14 14:02:52,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459697893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:02:52,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:02:52,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:02:52,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201241217] [2024-06-14 14:02:52,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:02:52,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:02:52,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:02:52,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:02:52,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:02:52,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:02:52,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 309 transitions, 3872 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:02:52,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:02:52,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:02:52,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:02:53,321 INFO L124 PetriNetUnfolderBase]: 902/1596 cut-off events. [2024-06-14 14:02:53,322 INFO L125 PetriNetUnfolderBase]: For 138945/138945 co-relation queries the response was YES. [2024-06-14 14:02:53,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11743 conditions, 1596 events. 902/1596 cut-off events. For 138945/138945 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 8788 event pairs, 297 based on Foata normal form. 4/1600 useless extension candidates. Maximal degree in co-relation 11582. Up to 1486 conditions per place. [2024-06-14 14:02:53,336 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 303 selfloop transitions, 22 changer transitions 0/327 dead transitions. [2024-06-14 14:02:53,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 327 transitions, 4804 flow [2024-06-14 14:02:53,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:02:53,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:02:53,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-14 14:02:53,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30578512396694213 [2024-06-14 14:02:53,337 INFO L175 Difference]: Start difference. First operand has 349 places, 309 transitions, 3872 flow. Second operand 11 states and 111 transitions. [2024-06-14 14:02:53,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 327 transitions, 4804 flow [2024-06-14 14:02:53,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 327 transitions, 4630 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-14 14:02:53,874 INFO L231 Difference]: Finished difference. Result has 351 places, 311 transitions, 3800 flow [2024-06-14 14:02:53,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3698, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3800, PETRI_PLACES=351, PETRI_TRANSITIONS=311} [2024-06-14 14:02:53,874 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 319 predicate places. [2024-06-14 14:02:53,874 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 311 transitions, 3800 flow [2024-06-14 14:02:53,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:02:53,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:02:53,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:02:53,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-14 14:02:53,875 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:02:53,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:02:53,875 INFO L85 PathProgramCache]: Analyzing trace with hash -659213773, now seen corresponding path program 24 times [2024-06-14 14:02:53,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:02:53,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745981553] [2024-06-14 14:02:53,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:02:53,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:02:53,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:02:58,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:02:58,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:02:58,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745981553] [2024-06-14 14:02:58,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745981553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:02:58,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:02:58,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:02:58,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082705129] [2024-06-14 14:02:58,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:02:58,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:02:58,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:02:58,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:02:58,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:02:58,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:02:58,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 311 transitions, 3800 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) [2024-06-14 14:02:58,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:02:58,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:02:58,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:02:59,297 INFO L124 PetriNetUnfolderBase]: 904/1600 cut-off events. [2024-06-14 14:02:59,297 INFO L125 PetriNetUnfolderBase]: For 133412/133412 co-relation queries the response was YES. [2024-06-14 14:02:59,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11461 conditions, 1600 events. 904/1600 cut-off events. For 133412/133412 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 8813 event pairs, 304 based on Foata normal form. 4/1604 useless extension candidates. Maximal degree in co-relation 11299. Up to 1527 conditions per place. [2024-06-14 14:02:59,316 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 302 selfloop transitions, 23 changer transitions 0/327 dead transitions. [2024-06-14 14:02:59,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 327 transitions, 4736 flow [2024-06-14 14:02:59,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:02:59,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:02:59,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 14:02:59,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3242424242424242 [2024-06-14 14:02:59,317 INFO L175 Difference]: Start difference. First operand has 351 places, 311 transitions, 3800 flow. Second operand 10 states and 107 transitions. [2024-06-14 14:02:59,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 327 transitions, 4736 flow [2024-06-14 14:02:59,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 327 transitions, 4629 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-14 14:02:59,856 INFO L231 Difference]: Finished difference. Result has 355 places, 313 transitions, 3808 flow [2024-06-14 14:02:59,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3693, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3808, PETRI_PLACES=355, PETRI_TRANSITIONS=313} [2024-06-14 14:02:59,857 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 323 predicate places. [2024-06-14 14:02:59,857 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 313 transitions, 3808 flow [2024-06-14 14:02:59,857 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) [2024-06-14 14:02:59,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:02:59,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:02:59,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-14 14:02:59,858 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:02:59,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:02:59,858 INFO L85 PathProgramCache]: Analyzing trace with hash -397054755, now seen corresponding path program 8 times [2024-06-14 14:02:59,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:02:59,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207451847] [2024-06-14 14:02:59,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:02:59,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:02:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:03:06,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:03:06,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:03:06,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207451847] [2024-06-14 14:03:06,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207451847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:03:06,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:03:06,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:03:06,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965981449] [2024-06-14 14:03:06,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:03:06,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:03:06,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:03:06,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:03:06,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:03:06,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:03:06,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 313 transitions, 3808 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) [2024-06-14 14:03:06,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:03:06,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:03:06,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:03:07,344 INFO L124 PetriNetUnfolderBase]: 898/1590 cut-off events. [2024-06-14 14:03:07,344 INFO L125 PetriNetUnfolderBase]: For 117275/117275 co-relation queries the response was YES. [2024-06-14 14:03:07,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10990 conditions, 1590 events. 898/1590 cut-off events. For 117275/117275 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 8752 event pairs, 296 based on Foata normal form. 4/1594 useless extension candidates. Maximal degree in co-relation 10825. Up to 1510 conditions per place. [2024-06-14 14:03:07,365 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 304 selfloop transitions, 21 changer transitions 0/327 dead transitions. [2024-06-14 14:03:07,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 327 transitions, 4500 flow [2024-06-14 14:03:07,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:03:07,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:03:07,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-14 14:03:07,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2024-06-14 14:03:07,366 INFO L175 Difference]: Start difference. First operand has 355 places, 313 transitions, 3808 flow. Second operand 11 states and 110 transitions. [2024-06-14 14:03:07,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 327 transitions, 4500 flow [2024-06-14 14:03:07,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 327 transitions, 4434 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-14 14:03:07,895 INFO L231 Difference]: Finished difference. Result has 358 places, 313 transitions, 3790 flow [2024-06-14 14:03:07,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3742, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3790, PETRI_PLACES=358, PETRI_TRANSITIONS=313} [2024-06-14 14:03:07,896 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 326 predicate places. [2024-06-14 14:03:07,896 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 313 transitions, 3790 flow [2024-06-14 14:03:07,896 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) [2024-06-14 14:03:07,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:03:07,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:03:07,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-14 14:03:07,897 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:03:07,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:03:07,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1017222327, now seen corresponding path program 1 times [2024-06-14 14:03:07,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:03:07,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454540465] [2024-06-14 14:03:07,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:03:07,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:03:07,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:03:12,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:03:12,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:03:12,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454540465] [2024-06-14 14:03:12,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454540465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:03:12,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:03:12,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:03:12,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614572814] [2024-06-14 14:03:12,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:03:12,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:03:12,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:03:12,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:03:12,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:03:13,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:03:13,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 313 transitions, 3790 flow. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:03:13,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:03:13,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:03:13,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:03:13,640 INFO L124 PetriNetUnfolderBase]: 940/1669 cut-off events. [2024-06-14 14:03:13,640 INFO L125 PetriNetUnfolderBase]: For 111473/111473 co-relation queries the response was YES. [2024-06-14 14:03:13,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11379 conditions, 1669 events. 940/1669 cut-off events. For 111473/111473 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9334 event pairs, 157 based on Foata normal form. 2/1671 useless extension candidates. Maximal degree in co-relation 11213. Up to 1481 conditions per place. [2024-06-14 14:03:13,662 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 286 selfloop transitions, 60 changer transitions 0/348 dead transitions. [2024-06-14 14:03:13,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 348 transitions, 4723 flow [2024-06-14 14:03:13,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:03:13,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:03:13,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-14 14:03:13,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33608815426997246 [2024-06-14 14:03:13,663 INFO L175 Difference]: Start difference. First operand has 358 places, 313 transitions, 3790 flow. Second operand 11 states and 122 transitions. [2024-06-14 14:03:13,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 348 transitions, 4723 flow [2024-06-14 14:03:14,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 348 transitions, 4674 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-14 14:03:14,220 INFO L231 Difference]: Finished difference. Result has 364 places, 329 transitions, 4102 flow [2024-06-14 14:03:14,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3741, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4102, PETRI_PLACES=364, PETRI_TRANSITIONS=329} [2024-06-14 14:03:14,221 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 332 predicate places. [2024-06-14 14:03:14,221 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 329 transitions, 4102 flow [2024-06-14 14:03:14,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:03:14,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:03:14,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:03:14,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-14 14:03:14,221 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:03:14,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:03:14,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1941588105, now seen corresponding path program 2 times [2024-06-14 14:03:14,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:03:14,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744641790] [2024-06-14 14:03:14,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:03:14,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:03:14,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:03:19,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:03:19,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:03:19,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744641790] [2024-06-14 14:03:19,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744641790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:03:19,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:03:19,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 14:03:19,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864925948] [2024-06-14 14:03:19,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:03:19,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 14:03:19,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:03:19,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 14:03:19,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 14:03:19,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:03:19,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 329 transitions, 4102 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-14 14:03:19,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:03:19,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:03:19,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:03:20,626 INFO L124 PetriNetUnfolderBase]: 944/1679 cut-off events. [2024-06-14 14:03:20,626 INFO L125 PetriNetUnfolderBase]: For 114043/114043 co-relation queries the response was YES. [2024-06-14 14:03:20,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11796 conditions, 1679 events. 944/1679 cut-off events. For 114043/114043 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9404 event pairs, 202 based on Foata normal form. 2/1681 useless extension candidates. Maximal degree in co-relation 11624. Up to 1525 conditions per place. [2024-06-14 14:03:20,643 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 301 selfloop transitions, 48 changer transitions 0/351 dead transitions. [2024-06-14 14:03:20,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 351 transitions, 4907 flow [2024-06-14 14:03:20,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 14:03:20,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 14:03:20,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-14 14:03:20,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3207070707070707 [2024-06-14 14:03:20,645 INFO L175 Difference]: Start difference. First operand has 364 places, 329 transitions, 4102 flow. Second operand 12 states and 127 transitions. [2024-06-14 14:03:20,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 351 transitions, 4907 flow [2024-06-14 14:03:21,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 351 transitions, 4816 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-14 14:03:21,190 INFO L231 Difference]: Finished difference. Result has 372 places, 330 transitions, 4144 flow [2024-06-14 14:03:21,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4017, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4144, PETRI_PLACES=372, PETRI_TRANSITIONS=330} [2024-06-14 14:03:21,191 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 340 predicate places. [2024-06-14 14:03:21,191 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 330 transitions, 4144 flow [2024-06-14 14:03:21,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-14 14:03:21,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:03:21,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:03:21,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-14 14:03:21,191 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:03:21,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:03:21,192 INFO L85 PathProgramCache]: Analyzing trace with hash -702364809, now seen corresponding path program 3 times [2024-06-14 14:03:21,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:03:21,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272918610] [2024-06-14 14:03:21,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:03:21,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:03:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:03:25,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:03:25,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:03:25,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272918610] [2024-06-14 14:03:25,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272918610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:03:25,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:03:25,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 14:03:25,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836205723] [2024-06-14 14:03:25,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:03:25,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 14:03:25,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:03:25,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 14:03:25,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 14:03:26,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:03:26,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 330 transitions, 4144 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-14 14:03:26,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:03:26,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:03:26,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:03:26,763 INFO L124 PetriNetUnfolderBase]: 948/1687 cut-off events. [2024-06-14 14:03:26,764 INFO L125 PetriNetUnfolderBase]: For 118105/118105 co-relation queries the response was YES. [2024-06-14 14:03:26,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11841 conditions, 1687 events. 948/1687 cut-off events. For 118105/118105 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9488 event pairs, 206 based on Foata normal form. 2/1689 useless extension candidates. Maximal degree in co-relation 11669. Up to 1536 conditions per place. [2024-06-14 14:03:26,785 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 305 selfloop transitions, 45 changer transitions 0/352 dead transitions. [2024-06-14 14:03:26,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 352 transitions, 4939 flow [2024-06-14 14:03:26,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 14:03:26,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 14:03:26,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-14 14:03:26,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-14 14:03:26,786 INFO L175 Difference]: Start difference. First operand has 372 places, 330 transitions, 4144 flow. Second operand 12 states and 126 transitions. [2024-06-14 14:03:26,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 352 transitions, 4939 flow [2024-06-14 14:03:27,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 352 transitions, 4794 flow, removed 11 selfloop flow, removed 11 redundant places. [2024-06-14 14:03:27,308 INFO L231 Difference]: Finished difference. Result has 373 places, 331 transitions, 4121 flow [2024-06-14 14:03:27,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3999, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4121, PETRI_PLACES=373, PETRI_TRANSITIONS=331} [2024-06-14 14:03:27,308 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 341 predicate places. [2024-06-14 14:03:27,309 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 331 transitions, 4121 flow [2024-06-14 14:03:27,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-14 14:03:27,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:03:27,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:03:27,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-14 14:03:27,309 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:03:27,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:03:27,310 INFO L85 PathProgramCache]: Analyzing trace with hash -706775799, now seen corresponding path program 4 times [2024-06-14 14:03:27,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:03:27,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256426361] [2024-06-14 14:03:27,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:03:27,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:03:27,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:03:32,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:03:32,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:03:32,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256426361] [2024-06-14 14:03:32,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256426361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:03:32,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:03:32,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 14:03:32,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871875059] [2024-06-14 14:03:32,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:03:32,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 14:03:32,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:03:32,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 14:03:32,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 14:03:32,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:03:32,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 331 transitions, 4121 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-14 14:03:32,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:03:32,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:03:32,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:03:33,492 INFO L124 PetriNetUnfolderBase]: 952/1695 cut-off events. [2024-06-14 14:03:33,492 INFO L125 PetriNetUnfolderBase]: For 120452/120452 co-relation queries the response was YES. [2024-06-14 14:03:33,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11862 conditions, 1695 events. 952/1695 cut-off events. For 120452/120452 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9514 event pairs, 209 based on Foata normal form. 2/1697 useless extension candidates. Maximal degree in co-relation 11689. Up to 1539 conditions per place. [2024-06-14 14:03:33,512 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 308 selfloop transitions, 43 changer transitions 0/353 dead transitions. [2024-06-14 14:03:33,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 353 transitions, 4912 flow [2024-06-14 14:03:33,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 14:03:33,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 14:03:33,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-14 14:03:33,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31565656565656564 [2024-06-14 14:03:33,514 INFO L175 Difference]: Start difference. First operand has 373 places, 331 transitions, 4121 flow. Second operand 12 states and 125 transitions. [2024-06-14 14:03:33,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 353 transitions, 4912 flow [2024-06-14 14:03:34,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 353 transitions, 4800 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-14 14:03:34,118 INFO L231 Difference]: Finished difference. Result has 375 places, 332 transitions, 4129 flow [2024-06-14 14:03:34,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4009, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4129, PETRI_PLACES=375, PETRI_TRANSITIONS=332} [2024-06-14 14:03:34,119 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 343 predicate places. [2024-06-14 14:03:34,119 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 332 transitions, 4129 flow [2024-06-14 14:03:34,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-14 14:03:34,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:03:34,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:03:34,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-14 14:03:34,119 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:03:34,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:03:34,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1142134637, now seen corresponding path program 5 times [2024-06-14 14:03:34,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:03:34,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203499249] [2024-06-14 14:03:34,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:03:34,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:03:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:03:38,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:03:38,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:03:38,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203499249] [2024-06-14 14:03:38,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203499249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:03:38,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:03:38,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 14:03:38,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006060675] [2024-06-14 14:03:38,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:03:38,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 14:03:38,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:03:38,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 14:03:38,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 14:03:38,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:03:38,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 332 transitions, 4129 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-14 14:03:38,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:03:38,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:03:38,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:03:39,358 INFO L124 PetriNetUnfolderBase]: 969/1730 cut-off events. [2024-06-14 14:03:39,358 INFO L125 PetriNetUnfolderBase]: For 122974/122974 co-relation queries the response was YES. [2024-06-14 14:03:39,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12011 conditions, 1730 events. 969/1730 cut-off events. For 122974/122974 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9798 event pairs, 174 based on Foata normal form. 2/1732 useless extension candidates. Maximal degree in co-relation 11837. Up to 1482 conditions per place. [2024-06-14 14:03:39,375 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 306 selfloop transitions, 50 changer transitions 0/358 dead transitions. [2024-06-14 14:03:39,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 358 transitions, 4953 flow [2024-06-14 14:03:39,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 14:03:39,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 14:03:39,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-14 14:03:39,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3106060606060606 [2024-06-14 14:03:39,376 INFO L175 Difference]: Start difference. First operand has 375 places, 332 transitions, 4129 flow. Second operand 12 states and 123 transitions. [2024-06-14 14:03:39,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 358 transitions, 4953 flow [2024-06-14 14:03:40,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 358 transitions, 4843 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-14 14:03:40,048 INFO L231 Difference]: Finished difference. Result has 379 places, 336 transitions, 4185 flow [2024-06-14 14:03:40,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4019, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4185, PETRI_PLACES=379, PETRI_TRANSITIONS=336} [2024-06-14 14:03:40,048 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 347 predicate places. [2024-06-14 14:03:40,048 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 336 transitions, 4185 flow [2024-06-14 14:03:40,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-14 14:03:40,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:03:40,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:03:40,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-14 14:03:40,049 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:03:40,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:03:40,049 INFO L85 PathProgramCache]: Analyzing trace with hash 925522797, now seen corresponding path program 6 times [2024-06-14 14:03:40,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:03:40,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374651379] [2024-06-14 14:03:40,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:03:40,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:03:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:03:44,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:03:44,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:03:44,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374651379] [2024-06-14 14:03:44,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374651379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:03:44,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:03:44,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 14:03:44,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109255878] [2024-06-14 14:03:44,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:03:44,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 14:03:44,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:03:44,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 14:03:44,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 14:03:44,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:03:44,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 336 transitions, 4185 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-14 14:03:44,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:03:44,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:03:44,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:03:45,705 INFO L124 PetriNetUnfolderBase]: 986/1765 cut-off events. [2024-06-14 14:03:45,705 INFO L125 PetriNetUnfolderBase]: For 125817/125817 co-relation queries the response was YES. [2024-06-14 14:03:45,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12220 conditions, 1765 events. 986/1765 cut-off events. For 125817/125817 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 10110 event pairs, 204 based on Foata normal form. 2/1767 useless extension candidates. Maximal degree in co-relation 12043. Up to 1569 conditions per place. [2024-06-14 14:03:45,729 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 314 selfloop transitions, 48 changer transitions 0/364 dead transitions. [2024-06-14 14:03:45,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 364 transitions, 5038 flow [2024-06-14 14:03:45,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 14:03:45,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 14:03:45,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 135 transitions. [2024-06-14 14:03:45,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3146853146853147 [2024-06-14 14:03:45,730 INFO L175 Difference]: Start difference. First operand has 379 places, 336 transitions, 4185 flow. Second operand 13 states and 135 transitions. [2024-06-14 14:03:45,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 364 transitions, 5038 flow [2024-06-14 14:03:46,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 364 transitions, 4919 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-14 14:03:46,348 INFO L231 Difference]: Finished difference. Result has 388 places, 340 transitions, 4253 flow [2024-06-14 14:03:46,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4067, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4253, PETRI_PLACES=388, PETRI_TRANSITIONS=340} [2024-06-14 14:03:46,348 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 356 predicate places. [2024-06-14 14:03:46,348 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 340 transitions, 4253 flow [2024-06-14 14:03:46,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-14 14:03:46,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:03:46,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:03:46,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-14 14:03:46,349 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:03:46,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:03:46,349 INFO L85 PathProgramCache]: Analyzing trace with hash 2002353617, now seen corresponding path program 1 times [2024-06-14 14:03:46,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:03:46,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981692913] [2024-06-14 14:03:46,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:03:46,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:03:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:03:52,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:03:52,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:03:52,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981692913] [2024-06-14 14:03:52,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981692913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:03:52,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:03:52,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 14:03:52,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202191372] [2024-06-14 14:03:52,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:03:52,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 14:03:52,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:03:52,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 14:03:52,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 14:03:53,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 14:03:53,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 340 transitions, 4253 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:03:53,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:03:53,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 14:03:53,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:03:54,032 INFO L124 PetriNetUnfolderBase]: 992/1775 cut-off events. [2024-06-14 14:03:54,032 INFO L125 PetriNetUnfolderBase]: For 127134/127134 co-relation queries the response was YES. [2024-06-14 14:03:54,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12338 conditions, 1775 events. 992/1775 cut-off events. For 127134/127134 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 10183 event pairs, 229 based on Foata normal form. 2/1777 useless extension candidates. Maximal degree in co-relation 12158. Up to 1572 conditions per place. [2024-06-14 14:03:54,056 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 303 selfloop transitions, 56 changer transitions 0/361 dead transitions. [2024-06-14 14:03:54,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 361 transitions, 5109 flow [2024-06-14 14:03:54,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:03:54,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:03:54,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 14:03:54,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35537190082644626 [2024-06-14 14:03:54,058 INFO L175 Difference]: Start difference. First operand has 388 places, 340 transitions, 4253 flow. Second operand 11 states and 129 transitions. [2024-06-14 14:03:54,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 361 transitions, 5109 flow [2024-06-14 14:03:54,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 361 transitions, 4988 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-14 14:03:54,708 INFO L231 Difference]: Finished difference. Result has 391 places, 342 transitions, 4309 flow [2024-06-14 14:03:54,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4132, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4309, PETRI_PLACES=391, PETRI_TRANSITIONS=342} [2024-06-14 14:03:54,708 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 359 predicate places. [2024-06-14 14:03:54,708 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 342 transitions, 4309 flow [2024-06-14 14:03:54,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:03:54,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:03:54,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:03:54,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-14 14:03:54,709 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:03:54,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:03:54,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1859177079, now seen corresponding path program 1 times [2024-06-14 14:03:54,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:03:54,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071654367] [2024-06-14 14:03:54,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:03:54,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:03:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:04:01,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:04:01,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:04:01,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071654367] [2024-06-14 14:04:01,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071654367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:04:01,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:04:01,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 14:04:01,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213057621] [2024-06-14 14:04:01,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:04:01,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 14:04:01,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:04:01,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 14:04:01,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 14:04:01,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:04:01,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 342 transitions, 4309 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-14 14:04:01,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:04:01,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:04:01,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:04:02,067 INFO L124 PetriNetUnfolderBase]: 995/1780 cut-off events. [2024-06-14 14:04:02,067 INFO L125 PetriNetUnfolderBase]: For 122952/122952 co-relation queries the response was YES. [2024-06-14 14:04:02,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12382 conditions, 1780 events. 995/1780 cut-off events. For 122952/122952 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 10227 event pairs, 226 based on Foata normal form. 1/1781 useless extension candidates. Maximal degree in co-relation 12201. Up to 1581 conditions per place. [2024-06-14 14:04:02,091 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 301 selfloop transitions, 62 changer transitions 0/365 dead transitions. [2024-06-14 14:04:02,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 365 transitions, 5182 flow [2024-06-14 14:04:02,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 14:04:02,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 14:04:02,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-14 14:04:02,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32323232323232326 [2024-06-14 14:04:02,092 INFO L175 Difference]: Start difference. First operand has 391 places, 342 transitions, 4309 flow. Second operand 12 states and 128 transitions. [2024-06-14 14:04:02,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 365 transitions, 5182 flow [2024-06-14 14:04:02,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 365 transitions, 5029 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-14 14:04:02,726 INFO L231 Difference]: Finished difference. Result has 394 places, 344 transitions, 4360 flow [2024-06-14 14:04:02,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4156, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4360, PETRI_PLACES=394, PETRI_TRANSITIONS=344} [2024-06-14 14:04:02,727 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 362 predicate places. [2024-06-14 14:04:02,727 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 344 transitions, 4360 flow [2024-06-14 14:04:02,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-14 14:04:02,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:04:02,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:04:02,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-14 14:04:02,727 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:04:02,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:04:02,728 INFO L85 PathProgramCache]: Analyzing trace with hash 177348825, now seen corresponding path program 7 times [2024-06-14 14:04:02,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:04:02,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9431210] [2024-06-14 14:04:02,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:04:02,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:04:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:04:07,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:04:07,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:04:07,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9431210] [2024-06-14 14:04:07,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9431210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:04:07,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:04:07,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 14:04:07,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911360201] [2024-06-14 14:04:07,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:04:07,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 14:04:07,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:04:07,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 14:04:07,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 14:04:08,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:04:08,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 344 transitions, 4360 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-14 14:04:08,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:04:08,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:04:08,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:04:08,855 INFO L124 PetriNetUnfolderBase]: 1003/1796 cut-off events. [2024-06-14 14:04:08,855 INFO L125 PetriNetUnfolderBase]: For 129675/129675 co-relation queries the response was YES. [2024-06-14 14:04:08,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12505 conditions, 1796 events. 1003/1796 cut-off events. For 129675/129675 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10364 event pairs, 184 based on Foata normal form. 2/1798 useless extension candidates. Maximal degree in co-relation 12323. Up to 1653 conditions per place. [2024-06-14 14:04:08,882 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 333 selfloop transitions, 34 changer transitions 0/369 dead transitions. [2024-06-14 14:04:08,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 369 transitions, 5208 flow [2024-06-14 14:04:08,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 14:04:08,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 14:04:08,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-14 14:04:08,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32323232323232326 [2024-06-14 14:04:08,883 INFO L175 Difference]: Start difference. First operand has 394 places, 344 transitions, 4360 flow. Second operand 12 states and 128 transitions. [2024-06-14 14:04:08,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 369 transitions, 5208 flow [2024-06-14 14:04:09,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 369 transitions, 5058 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-14 14:04:09,583 INFO L231 Difference]: Finished difference. Result has 397 places, 346 transitions, 4327 flow [2024-06-14 14:04:09,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4210, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4327, PETRI_PLACES=397, PETRI_TRANSITIONS=346} [2024-06-14 14:04:09,584 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 365 predicate places. [2024-06-14 14:04:09,584 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 346 transitions, 4327 flow [2024-06-14 14:04:09,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-14 14:04:09,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:04:09,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:04:09,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-14 14:04:09,584 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:04:09,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:04:09,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1482782461, now seen corresponding path program 8 times [2024-06-14 14:04:09,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:04:09,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411968197] [2024-06-14 14:04:09,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:04:09,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:04:09,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:04:14,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:04:14,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:04:14,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411968197] [2024-06-14 14:04:14,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411968197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:04:14,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:04:14,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 14:04:14,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688134294] [2024-06-14 14:04:14,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:04:14,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 14:04:14,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:04:14,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 14:04:14,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 14:04:14,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:04:14,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 346 transitions, 4327 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-14 14:04:14,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:04:14,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:04:14,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:04:15,510 INFO L124 PetriNetUnfolderBase]: 1007/1804 cut-off events. [2024-06-14 14:04:15,511 INFO L125 PetriNetUnfolderBase]: For 133167/133167 co-relation queries the response was YES. [2024-06-14 14:04:15,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12532 conditions, 1804 events. 1007/1804 cut-off events. For 133167/133167 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 10394 event pairs, 194 based on Foata normal form. 2/1806 useless extension candidates. Maximal degree in co-relation 12348. Up to 1671 conditions per place. [2024-06-14 14:04:15,536 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 327 selfloop transitions, 38 changer transitions 0/367 dead transitions. [2024-06-14 14:04:15,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 367 transitions, 5174 flow [2024-06-14 14:04:15,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:04:15,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:04:15,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-14 14:04:15,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3305785123966942 [2024-06-14 14:04:15,537 INFO L175 Difference]: Start difference. First operand has 397 places, 346 transitions, 4327 flow. Second operand 11 states and 120 transitions. [2024-06-14 14:04:15,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 367 transitions, 5174 flow [2024-06-14 14:04:16,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 367 transitions, 5076 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-14 14:04:16,281 INFO L231 Difference]: Finished difference. Result has 399 places, 347 transitions, 4346 flow [2024-06-14 14:04:16,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4229, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4346, PETRI_PLACES=399, PETRI_TRANSITIONS=347} [2024-06-14 14:04:16,281 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 367 predicate places. [2024-06-14 14:04:16,282 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 347 transitions, 4346 flow [2024-06-14 14:04:16,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-14 14:04:16,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:04:16,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:04:16,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-14 14:04:16,282 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:04:16,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:04:16,283 INFO L85 PathProgramCache]: Analyzing trace with hash 235556595, now seen corresponding path program 9 times [2024-06-14 14:04:16,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:04:16,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426076434] [2024-06-14 14:04:16,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:04:16,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:04:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:04:21,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:04:21,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:04:21,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426076434] [2024-06-14 14:04:21,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426076434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:04:21,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:04:21,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 14:04:21,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063610131] [2024-06-14 14:04:21,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:04:21,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 14:04:21,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:04:21,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 14:04:21,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 14:04:21,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:04:21,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 347 transitions, 4346 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-14 14:04:21,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:04:21,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:04:21,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:04:22,567 INFO L124 PetriNetUnfolderBase]: 1021/1830 cut-off events. [2024-06-14 14:04:22,567 INFO L125 PetriNetUnfolderBase]: For 135923/135923 co-relation queries the response was YES. [2024-06-14 14:04:22,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12689 conditions, 1830 events. 1021/1830 cut-off events. For 135923/135923 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10601 event pairs, 178 based on Foata normal form. 2/1832 useless extension candidates. Maximal degree in co-relation 12504. Up to 1598 conditions per place. [2024-06-14 14:04:22,591 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 301 selfloop transitions, 69 changer transitions 0/372 dead transitions. [2024-06-14 14:04:22,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 372 transitions, 5253 flow [2024-06-14 14:04:22,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:04:22,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:04:22,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-14 14:04:22,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3415977961432507 [2024-06-14 14:04:22,593 INFO L175 Difference]: Start difference. First operand has 399 places, 347 transitions, 4346 flow. Second operand 11 states and 124 transitions. [2024-06-14 14:04:22,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 372 transitions, 5253 flow [2024-06-14 14:04:23,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 372 transitions, 5148 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-14 14:04:23,360 INFO L231 Difference]: Finished difference. Result has 404 places, 353 transitions, 4541 flow [2024-06-14 14:04:23,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4241, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4541, PETRI_PLACES=404, PETRI_TRANSITIONS=353} [2024-06-14 14:04:23,361 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 372 predicate places. [2024-06-14 14:04:23,361 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 353 transitions, 4541 flow [2024-06-14 14:04:23,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-14 14:04:23,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:04:23,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:04:23,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-14 14:04:23,361 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:04:23,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:04:23,361 INFO L85 PathProgramCache]: Analyzing trace with hash 183729545, now seen corresponding path program 10 times [2024-06-14 14:04:23,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:04:23,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614950273] [2024-06-14 14:04:23,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:04:23,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:04:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:04:28,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:04:28,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:04:28,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614950273] [2024-06-14 14:04:28,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614950273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:04:28,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:04:28,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 14:04:28,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970327920] [2024-06-14 14:04:28,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:04:28,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 14:04:28,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:04:28,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 14:04:28,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 14:04:28,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:04:28,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 353 transitions, 4541 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-14 14:04:28,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:04:28,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:04:28,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:04:29,077 INFO L124 PetriNetUnfolderBase]: 1033/1854 cut-off events. [2024-06-14 14:04:29,078 INFO L125 PetriNetUnfolderBase]: For 139003/139003 co-relation queries the response was YES. [2024-06-14 14:04:29,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12971 conditions, 1854 events. 1033/1854 cut-off events. For 139003/139003 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 10799 event pairs, 194 based on Foata normal form. 2/1856 useless extension candidates. Maximal degree in co-relation 12782. Up to 1642 conditions per place. [2024-06-14 14:04:29,104 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 317 selfloop transitions, 55 changer transitions 0/374 dead transitions. [2024-06-14 14:04:29,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 374 transitions, 5395 flow [2024-06-14 14:04:29,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:04:29,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:04:29,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-14 14:04:29,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 14:04:29,105 INFO L175 Difference]: Start difference. First operand has 404 places, 353 transitions, 4541 flow. Second operand 11 states and 121 transitions. [2024-06-14 14:04:29,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 374 transitions, 5395 flow [2024-06-14 14:04:29,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 374 transitions, 5268 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-14 14:04:29,809 INFO L231 Difference]: Finished difference. Result has 411 places, 356 transitions, 4606 flow [2024-06-14 14:04:29,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4416, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4606, PETRI_PLACES=411, PETRI_TRANSITIONS=356} [2024-06-14 14:04:29,809 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 379 predicate places. [2024-06-14 14:04:29,809 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 356 transitions, 4606 flow [2024-06-14 14:04:29,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-14 14:04:29,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:04:29,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:04:29,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-14 14:04:29,809 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:04:29,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:04:29,810 INFO L85 PathProgramCache]: Analyzing trace with hash 194771693, now seen corresponding path program 2 times [2024-06-14 14:04:29,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:04:29,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558008311] [2024-06-14 14:04:29,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:04:29,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:04:29,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:04:36,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:04:36,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:04:36,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558008311] [2024-06-14 14:04:36,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558008311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:04:36,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:04:36,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 14:04:36,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958725509] [2024-06-14 14:04:36,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:04:36,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 14:04:36,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:04:36,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 14:04:36,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 14:04:36,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:04:36,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 356 transitions, 4606 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-14 14:04:36,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:04:36,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:04:36,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:04:37,544 INFO L124 PetriNetUnfolderBase]: 1031/1851 cut-off events. [2024-06-14 14:04:37,544 INFO L125 PetriNetUnfolderBase]: For 127510/127510 co-relation queries the response was YES. [2024-06-14 14:04:37,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12831 conditions, 1851 events. 1031/1851 cut-off events. For 127510/127510 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 10794 event pairs, 198 based on Foata normal form. 1/1852 useless extension candidates. Maximal degree in co-relation 12639. Up to 1715 conditions per place. [2024-06-14 14:04:37,562 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 333 selfloop transitions, 41 changer transitions 0/376 dead transitions. [2024-06-14 14:04:37,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 376 transitions, 5445 flow [2024-06-14 14:04:37,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:04:37,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:04:37,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-14 14:04:37,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 14:04:37,563 INFO L175 Difference]: Start difference. First operand has 411 places, 356 transitions, 4606 flow. Second operand 11 states and 121 transitions. [2024-06-14 14:04:37,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 376 transitions, 5445 flow [2024-06-14 14:04:38,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 376 transitions, 5287 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-14 14:04:38,228 INFO L231 Difference]: Finished difference. Result has 415 places, 356 transitions, 4538 flow [2024-06-14 14:04:38,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4448, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4538, PETRI_PLACES=415, PETRI_TRANSITIONS=356} [2024-06-14 14:04:38,228 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 383 predicate places. [2024-06-14 14:04:38,228 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 356 transitions, 4538 flow [2024-06-14 14:04:38,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-14 14:04:38,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:04:38,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:04:38,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-14 14:04:38,228 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:04:38,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:04:38,229 INFO L85 PathProgramCache]: Analyzing trace with hash 851505425, now seen corresponding path program 11 times [2024-06-14 14:04:38,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:04:38,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953022605] [2024-06-14 14:04:38,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:04:38,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:04:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:04:43,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:04:43,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:04:43,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953022605] [2024-06-14 14:04:43,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953022605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:04:43,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:04:43,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 14:04:43,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677547952] [2024-06-14 14:04:43,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:04:43,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 14:04:43,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:04:43,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 14:04:43,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 14:04:43,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:04:43,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 356 transitions, 4538 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-14 14:04:43,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:04:43,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:04:43,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:04:44,237 INFO L124 PetriNetUnfolderBase]: 1035/1859 cut-off events. [2024-06-14 14:04:44,238 INFO L125 PetriNetUnfolderBase]: For 132755/132755 co-relation queries the response was YES. [2024-06-14 14:04:44,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12816 conditions, 1859 events. 1035/1859 cut-off events. For 132755/132755 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 10855 event pairs, 175 based on Foata normal form. 2/1861 useless extension candidates. Maximal degree in co-relation 12623. Up to 1619 conditions per place. [2024-06-14 14:04:44,258 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 307 selfloop transitions, 69 changer transitions 0/378 dead transitions. [2024-06-14 14:04:44,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 378 transitions, 5426 flow [2024-06-14 14:04:44,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:04:44,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:04:44,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-14 14:04:44,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3443526170798898 [2024-06-14 14:04:44,260 INFO L175 Difference]: Start difference. First operand has 415 places, 356 transitions, 4538 flow. Second operand 11 states and 125 transitions. [2024-06-14 14:04:44,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 378 transitions, 5426 flow [2024-06-14 14:04:44,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 378 transitions, 5336 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-14 14:04:44,910 INFO L231 Difference]: Finished difference. Result has 417 places, 357 transitions, 4628 flow [2024-06-14 14:04:44,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4448, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4628, PETRI_PLACES=417, PETRI_TRANSITIONS=357} [2024-06-14 14:04:44,910 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 385 predicate places. [2024-06-14 14:04:44,910 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 357 transitions, 4628 flow [2024-06-14 14:04:44,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-14 14:04:44,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:04:44,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:04:44,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-14 14:04:44,910 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:04:44,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:04:44,911 INFO L85 PathProgramCache]: Analyzing trace with hash -2075597487, now seen corresponding path program 12 times [2024-06-14 14:04:44,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:04:44,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60076177] [2024-06-14 14:04:44,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:04:44,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:04:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:04:49,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:04:49,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:04:49,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60076177] [2024-06-14 14:04:49,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60076177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:04:49,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:04:49,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 14:04:49,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470229089] [2024-06-14 14:04:49,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:04:49,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 14:04:49,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:04:49,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 14:04:49,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 14:04:49,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:04:49,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 357 transitions, 4628 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-14 14:04:49,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:04:49,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:04:49,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:04:50,053 INFO L124 PetriNetUnfolderBase]: 1039/1867 cut-off events. [2024-06-14 14:04:50,053 INFO L125 PetriNetUnfolderBase]: For 136185/136185 co-relation queries the response was YES. [2024-06-14 14:04:50,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12996 conditions, 1867 events. 1039/1867 cut-off events. For 136185/136185 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 10942 event pairs, 173 based on Foata normal form. 2/1869 useless extension candidates. Maximal degree in co-relation 12802. Up to 1627 conditions per place. [2024-06-14 14:04:50,077 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 309 selfloop transitions, 68 changer transitions 0/379 dead transitions. [2024-06-14 14:04:50,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 379 transitions, 5512 flow [2024-06-14 14:04:50,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:04:50,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:04:50,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-14 14:04:50,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3415977961432507 [2024-06-14 14:04:50,077 INFO L175 Difference]: Start difference. First operand has 417 places, 357 transitions, 4628 flow. Second operand 11 states and 124 transitions. [2024-06-14 14:04:50,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 379 transitions, 5512 flow [2024-06-14 14:04:50,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 379 transitions, 5332 flow, removed 19 selfloop flow, removed 11 redundant places. [2024-06-14 14:04:50,848 INFO L231 Difference]: Finished difference. Result has 417 places, 358 transitions, 4628 flow [2024-06-14 14:04:50,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4448, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4628, PETRI_PLACES=417, PETRI_TRANSITIONS=358} [2024-06-14 14:04:50,849 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 385 predicate places. [2024-06-14 14:04:50,849 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 358 transitions, 4628 flow [2024-06-14 14:04:50,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-14 14:04:50,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:04:50,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:04:50,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-14 14:04:50,850 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:04:50,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:04:50,850 INFO L85 PathProgramCache]: Analyzing trace with hash -2068917483, now seen corresponding path program 1 times [2024-06-14 14:04:50,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:04:50,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829167651] [2024-06-14 14:04:50,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:04:50,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:04:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:04:56,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:04:56,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:04:56,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829167651] [2024-06-14 14:04:56,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829167651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:04:56,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:04:56,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 14:04:56,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538747499] [2024-06-14 14:04:56,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:04:56,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 14:04:56,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:04:56,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 14:04:56,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-14 14:04:57,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:04:57,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 358 transitions, 4628 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-14 14:04:57,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:04:57,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:04:57,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:04:58,029 INFO L124 PetriNetUnfolderBase]: 1046/1880 cut-off events. [2024-06-14 14:04:58,030 INFO L125 PetriNetUnfolderBase]: For 133892/133892 co-relation queries the response was YES. [2024-06-14 14:04:58,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13000 conditions, 1880 events. 1046/1880 cut-off events. For 133892/133892 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 11061 event pairs, 277 based on Foata normal form. 2/1882 useless extension candidates. Maximal degree in co-relation 12807. Up to 1743 conditions per place. [2024-06-14 14:04:58,052 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 334 selfloop transitions, 45 changer transitions 0/381 dead transitions. [2024-06-14 14:04:58,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 381 transitions, 5498 flow [2024-06-14 14:04:58,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 14:04:58,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 14:04:58,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-14 14:04:58,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3207070707070707 [2024-06-14 14:04:58,053 INFO L175 Difference]: Start difference. First operand has 417 places, 358 transitions, 4628 flow. Second operand 12 states and 127 transitions. [2024-06-14 14:04:58,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 381 transitions, 5498 flow [2024-06-14 14:04:58,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 381 transitions, 5328 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-14 14:04:58,765 INFO L231 Difference]: Finished difference. Result has 421 places, 361 transitions, 4612 flow [2024-06-14 14:04:58,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4458, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4612, PETRI_PLACES=421, PETRI_TRANSITIONS=361} [2024-06-14 14:04:58,766 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 389 predicate places. [2024-06-14 14:04:58,766 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 361 transitions, 4612 flow [2024-06-14 14:04:58,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-14 14:04:58,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:04:58,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:04:58,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-14 14:04:58,766 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:04:58,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:04:58,767 INFO L85 PathProgramCache]: Analyzing trace with hash 857934515, now seen corresponding path program 13 times [2024-06-14 14:04:58,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:04:58,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900083414] [2024-06-14 14:04:58,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:04:58,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:04:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:05:03,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:05:03,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:05:03,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900083414] [2024-06-14 14:05:03,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900083414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:05:03,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:05:03,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 14:05:03,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749265199] [2024-06-14 14:05:03,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:05:03,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 14:05:03,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:05:03,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 14:05:03,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 14:05:03,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:05:03,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 361 transitions, 4612 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-14 14:05:03,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:05:03,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:05:03,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:05:04,428 INFO L124 PetriNetUnfolderBase]: 1050/1888 cut-off events. [2024-06-14 14:05:04,428 INFO L125 PetriNetUnfolderBase]: For 136125/136125 co-relation queries the response was YES. [2024-06-14 14:05:04,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13012 conditions, 1888 events. 1050/1888 cut-off events. For 136125/136125 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 11077 event pairs, 173 based on Foata normal form. 2/1890 useless extension candidates. Maximal degree in co-relation 12817. Up to 1599 conditions per place. [2024-06-14 14:05:04,453 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 299 selfloop transitions, 83 changer transitions 0/384 dead transitions. [2024-06-14 14:05:04,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 384 transitions, 5522 flow [2024-06-14 14:05:04,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:05:04,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:05:04,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 14:05:04,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.349862258953168 [2024-06-14 14:05:04,454 INFO L175 Difference]: Start difference. First operand has 421 places, 361 transitions, 4612 flow. Second operand 11 states and 127 transitions. [2024-06-14 14:05:04,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 384 transitions, 5522 flow [2024-06-14 14:05:05,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 384 transitions, 5418 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-14 14:05:05,194 INFO L231 Difference]: Finished difference. Result has 423 places, 362 transitions, 4720 flow [2024-06-14 14:05:05,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4508, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4720, PETRI_PLACES=423, PETRI_TRANSITIONS=362} [2024-06-14 14:05:05,195 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 391 predicate places. [2024-06-14 14:05:05,195 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 362 transitions, 4720 flow [2024-06-14 14:05:05,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-14 14:05:05,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:05:05,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:05:05,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-14 14:05:05,195 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:05:05,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:05:05,195 INFO L85 PathProgramCache]: Analyzing trace with hash -2075412913, now seen corresponding path program 2 times [2024-06-14 14:05:05,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:05:05,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82340751] [2024-06-14 14:05:05,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:05:05,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:05:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:05:10,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:05:10,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:05:10,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82340751] [2024-06-14 14:05:10,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82340751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:05:10,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:05:10,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 14:05:10,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108108677] [2024-06-14 14:05:10,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:05:10,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 14:05:10,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:05:10,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 14:05:10,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 14:05:11,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:05:11,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 362 transitions, 4720 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-14 14:05:11,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:05:11,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:05:11,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:05:11,880 INFO L124 PetriNetUnfolderBase]: 1056/1898 cut-off events. [2024-06-14 14:05:11,880 INFO L125 PetriNetUnfolderBase]: For 138923/138923 co-relation queries the response was YES. [2024-06-14 14:05:11,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13205 conditions, 1898 events. 1056/1898 cut-off events. For 138923/138923 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 11153 event pairs, 175 based on Foata normal form. 2/1900 useless extension candidates. Maximal degree in co-relation 13009. Up to 1648 conditions per place. [2024-06-14 14:05:11,905 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 313 selfloop transitions, 72 changer transitions 0/387 dead transitions. [2024-06-14 14:05:11,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 387 transitions, 5668 flow [2024-06-14 14:05:11,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 14:05:11,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 14:05:11,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-14 14:05:11,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-14 14:05:11,907 INFO L175 Difference]: Start difference. First operand has 423 places, 362 transitions, 4720 flow. Second operand 12 states and 135 transitions. [2024-06-14 14:05:11,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 387 transitions, 5668 flow [2024-06-14 14:05:12,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 387 transitions, 5466 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-14 14:05:12,560 INFO L231 Difference]: Finished difference. Result has 426 places, 364 transitions, 4729 flow [2024-06-14 14:05:12,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4518, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4729, PETRI_PLACES=426, PETRI_TRANSITIONS=364} [2024-06-14 14:05:12,560 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 394 predicate places. [2024-06-14 14:05:12,560 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 364 transitions, 4729 flow [2024-06-14 14:05:12,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-14 14:05:12,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:05:12,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:05:12,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-14 14:05:12,561 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:05:12,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:05:12,561 INFO L85 PathProgramCache]: Analyzing trace with hash 680802995, now seen corresponding path program 14 times [2024-06-14 14:05:12,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:05:12,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592147137] [2024-06-14 14:05:12,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:05:12,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:05:12,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:05:17,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:05:17,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:05:17,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592147137] [2024-06-14 14:05:17,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592147137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:05:17,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:05:17,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 14:05:17,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682586503] [2024-06-14 14:05:17,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:05:17,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 14:05:17,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:05:17,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 14:05:17,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 14:05:17,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 14:05:17,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 364 transitions, 4729 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-14 14:05:17,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:05:17,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 14:05:17,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:05:18,438 INFO L124 PetriNetUnfolderBase]: 1060/1906 cut-off events. [2024-06-14 14:05:18,438 INFO L125 PetriNetUnfolderBase]: For 141418/141418 co-relation queries the response was YES. [2024-06-14 14:05:18,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13234 conditions, 1906 events. 1060/1906 cut-off events. For 141418/141418 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 11209 event pairs, 193 based on Foata normal form. 2/1908 useless extension candidates. Maximal degree in co-relation 13037. Up to 1711 conditions per place. [2024-06-14 14:05:18,464 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 325 selfloop transitions, 57 changer transitions 0/384 dead transitions. [2024-06-14 14:05:18,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 384 transitions, 5619 flow [2024-06-14 14:05:18,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:05:18,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:05:18,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 14:05:18,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-14 14:05:18,465 INFO L175 Difference]: Start difference. First operand has 426 places, 364 transitions, 4729 flow. Second operand 11 states and 123 transitions. [2024-06-14 14:05:18,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 384 transitions, 5619 flow [2024-06-14 14:05:19,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 384 transitions, 5428 flow, removed 25 selfloop flow, removed 10 redundant places. [2024-06-14 14:05:19,193 INFO L231 Difference]: Finished difference. Result has 427 places, 365 transitions, 4700 flow [2024-06-14 14:05:19,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4538, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4700, PETRI_PLACES=427, PETRI_TRANSITIONS=365} [2024-06-14 14:05:19,194 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 395 predicate places. [2024-06-14 14:05:19,194 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 365 transitions, 4700 flow [2024-06-14 14:05:19,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-14 14:05:19,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:05:19,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:05:19,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-14 14:05:19,194 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:05:19,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:05:19,194 INFO L85 PathProgramCache]: Analyzing trace with hash -2068917793, now seen corresponding path program 3 times [2024-06-14 14:05:19,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:05:19,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139570371] [2024-06-14 14:05:19,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:05:19,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:05:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15