./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix036_power.opt_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix036_power.opt_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix036_power.opt_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix036_power.opt_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 03:23:08,809 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:23:08,875 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:23:08,881 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:23:08,881 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:23:08,919 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:23:08,919 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:23:08,920 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:23:08,920 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:23:08,923 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:23:08,923 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:23:08,923 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:23:08,931 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:23:08,932 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:23:08,933 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:23:08,933 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:23:08,933 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:23:08,933 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:23:08,933 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:23:08,934 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:23:08,934 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:23:08,934 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:23:08,934 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:23:08,934 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:23:08,935 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:23:08,935 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:23:08,935 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:23:08,935 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:23:08,936 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:23:08,936 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:23:08,937 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:23:08,937 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:23:08,937 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:23:08,937 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:23:08,937 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:23:08,938 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:23:08,938 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:23:08,939 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:23:08,939 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:23:08,939 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:23:08,939 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:23:08,940 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:23:08,940 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:23:08,940 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:23:09,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:23:09,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:23:09,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:23:09,177 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:23:09,178 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:23:09,179 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix036_power.opt_rmo.opt.i [2024-06-28 03:23:10,222 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:23:10,442 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:23:10,446 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix036_power.opt_rmo.opt.i [2024-06-28 03:23:10,465 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24708ef3c/fe4c21ee6dd94167b8553f278a8fd9f9/FLAG62520417b [2024-06-28 03:23:10,478 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24708ef3c/fe4c21ee6dd94167b8553f278a8fd9f9 [2024-06-28 03:23:10,480 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:23:10,480 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:23:10,482 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix036_power.opt_rmo.opt.yml/witness.yml [2024-06-28 03:23:10,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:23:10,669 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:23:10,670 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:23:10,670 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:23:10,674 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:23:10,675 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:23:10" (1/2) ... [2024-06-28 03:23:10,676 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ff358b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:23:10, skipping insertion in model container [2024-06-28 03:23:10,676 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:23:10" (1/2) ... [2024-06-28 03:23:10,677 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@26fa2806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:23:10, skipping insertion in model container [2024-06-28 03:23:10,678 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:23:10" (2/2) ... [2024-06-28 03:23:10,678 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ff358b9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:23:10, skipping insertion in model container [2024-06-28 03:23:10,678 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:23:10" (2/2) ... [2024-06-28 03:23:10,679 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:23:10,824 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:23:10,826 INFO L97 edCorrectnessWitness]: Location invariant before [L871-L871] ((((((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || ((((((((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd4 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd4 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0) [2024-06-28 03:23:10,826 INFO L97 edCorrectnessWitness]: Location invariant before [L870-L870] ((((((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || ((((((((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd4 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd4 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0) [2024-06-28 03:23:10,826 INFO L97 edCorrectnessWitness]: Location invariant before [L866-L866] ((((((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || ((((((((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd4 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd4 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0) [2024-06-28 03:23:10,826 INFO L97 edCorrectnessWitness]: Location invariant before [L868-L868] ((((((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || ((((((((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd4 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd4 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0) [2024-06-28 03:23:10,827 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:23:10,827 INFO L106 edCorrectnessWitness]: ghost_update [L864-L864] multithreaded = 1; [2024-06-28 03:23:10,862 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:23:11,183 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:23:11,193 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:23:11,356 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:23:11,390 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:23:11,391 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:23:11 WrapperNode [2024-06-28 03:23:11,391 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:23:11,392 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:23:11,392 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:23:11,393 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:23:11,398 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:23:11" (1/1) ... [2024-06-28 03:23:11,430 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:23:11" (1/1) ... [2024-06-28 03:23:11,468 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 141 [2024-06-28 03:23:11,468 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:23:11,469 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:23:11,469 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:23:11,469 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:23:11,482 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:23:11" (1/1) ... [2024-06-28 03:23:11,483 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:23:11" (1/1) ... [2024-06-28 03:23:11,486 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:23:11" (1/1) ... [2024-06-28 03:23:11,504 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 03:23:11,504 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:23:11" (1/1) ... [2024-06-28 03:23:11,504 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:23:11" (1/1) ... [2024-06-28 03:23:11,526 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:23:11" (1/1) ... [2024-06-28 03:23:11,527 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:23:11" (1/1) ... [2024-06-28 03:23:11,529 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:23:11" (1/1) ... [2024-06-28 03:23:11,530 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:23:11" (1/1) ... [2024-06-28 03:23:11,533 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:23:11,534 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:23:11,534 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:23:11,534 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:23:11,534 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:23:11" (1/1) ... [2024-06-28 03:23:11,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:23:11,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:23:11,572 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 03:23:11,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 03:23:11,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:23:11,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:23:11,600 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:23:11,601 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:23:11,601 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:23:11,601 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:23:11,601 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:23:11,601 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:23:11,601 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 03:23:11,601 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 03:23:11,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:23:11,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:23:11,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:23:11,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:23:11,603 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 03:23:11,744 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:23:11,747 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:23:12,076 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:23:12,077 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:23:12,175 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:23:12,176 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:23:12,177 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:23:12 BoogieIcfgContainer [2024-06-28 03:23:12,177 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:23:12,179 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:23:12,179 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:23:12,181 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:23:12,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:23:10" (1/4) ... [2024-06-28 03:23:12,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e3f2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:23:12, skipping insertion in model container [2024-06-28 03:23:12,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:23:10" (2/4) ... [2024-06-28 03:23:12,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e3f2a3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:23:12, skipping insertion in model container [2024-06-28 03:23:12,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:23:11" (3/4) ... [2024-06-28 03:23:12,184 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e3f2a3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:23:12, skipping insertion in model container [2024-06-28 03:23:12,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:23:12" (4/4) ... [2024-06-28 03:23:12,185 INFO L112 eAbstractionObserver]: Analyzing ICFG mix036_power.opt_rmo.opt.i [2024-06-28 03:23:12,198 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:23:12,199 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 03:23:12,199 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:23:12,250 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:23:12,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 53 transitions, 122 flow [2024-06-28 03:23:12,312 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2024-06-28 03:23:12,312 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:23:12,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 49 events. 0/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 88 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:23:12,315 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 53 transitions, 122 flow [2024-06-28 03:23:12,318 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 43 transitions, 98 flow [2024-06-28 03:23:12,329 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:23:12,334 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;@240660ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:23:12,364 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-28 03:23:12,367 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:23:12,367 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:23:12,368 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:23:12,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:12,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:23:12,368 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:23:12,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:12,372 INFO L85 PathProgramCache]: Analyzing trace with hash 393554227, now seen corresponding path program 1 times [2024-06-28 03:23:12,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:12,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832901020] [2024-06-28 03:23:12,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:12,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:13,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:13,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:13,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832901020] [2024-06-28 03:23:13,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832901020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:13,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:13,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:23:13,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799630886] [2024-06-28 03:23:13,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:13,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:23:13,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:13,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:23:13,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:23:13,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 53 [2024-06-28 03:23:13,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 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) [2024-06-28 03:23:13,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:13,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 53 [2024-06-28 03:23:13,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:14,395 INFO L124 PetriNetUnfolderBase]: 6197/8949 cut-off events. [2024-06-28 03:23:14,395 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-06-28 03:23:14,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17695 conditions, 8949 events. 6197/8949 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 51652 event pairs, 4558 based on Foata normal form. 1/8678 useless extension candidates. Maximal degree in co-relation 17682. Up to 8479 conditions per place. [2024-06-28 03:23:14,439 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 41 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-28 03:23:14,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 227 flow [2024-06-28 03:23:14,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:23:14,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:23:14,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-06-28 03:23:14,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6540880503144654 [2024-06-28 03:23:14,449 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 98 flow. Second operand 3 states and 104 transitions. [2024-06-28 03:23:14,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 227 flow [2024-06-28 03:23:14,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 57 transitions, 220 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 03:23:14,453 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 133 flow [2024-06-28 03:23:14,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-28 03:23:14,457 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-06-28 03:23:14,457 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 133 flow [2024-06-28 03:23:14,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 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) [2024-06-28 03:23:14,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:14,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:14,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:23:14,458 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:23:14,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:14,459 INFO L85 PathProgramCache]: Analyzing trace with hash 249209412, now seen corresponding path program 1 times [2024-06-28 03:23:14,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:14,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584559439] [2024-06-28 03:23:14,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:14,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:15,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:15,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:15,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584559439] [2024-06-28 03:23:15,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584559439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:15,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:15,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:23:15,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916897817] [2024-06-28 03:23:15,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:15,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:23:15,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:15,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:23:15,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:23:15,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-06-28 03:23:15,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:15,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:15,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-06-28 03:23:15,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:16,321 INFO L124 PetriNetUnfolderBase]: 7092/9982 cut-off events. [2024-06-28 03:23:16,322 INFO L125 PetriNetUnfolderBase]: For 2006/2006 co-relation queries the response was YES. [2024-06-28 03:23:16,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22709 conditions, 9982 events. 7092/9982 cut-off events. For 2006/2006 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 56311 event pairs, 4490 based on Foata normal form. 4/9861 useless extension candidates. Maximal degree in co-relation 22697. Up to 9649 conditions per place. [2024-06-28 03:23:16,377 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 52 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-06-28 03:23:16,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 71 transitions, 321 flow [2024-06-28 03:23:16,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:23:16,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:23:16,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-06-28 03:23:16,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6273584905660378 [2024-06-28 03:23:16,379 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 133 flow. Second operand 4 states and 133 transitions. [2024-06-28 03:23:16,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 71 transitions, 321 flow [2024-06-28 03:23:16,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:23:16,382 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 181 flow [2024-06-28 03:23:16,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-06-28 03:23:16,382 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-06-28 03:23:16,382 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 181 flow [2024-06-28 03:23:16,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:16,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:16,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:16,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:23:16,383 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:23:16,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:16,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1799055595, now seen corresponding path program 1 times [2024-06-28 03:23:16,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:16,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590561621] [2024-06-28 03:23:16,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:16,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:16,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:17,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:17,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:17,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590561621] [2024-06-28 03:23:17,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590561621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:17,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:17,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:23:17,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958905052] [2024-06-28 03:23:17,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:17,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:23:17,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:17,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:23:17,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:23:17,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-06-28 03:23:17,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 181 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:17,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:17,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-06-28 03:23:17,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:19,092 INFO L124 PetriNetUnfolderBase]: 9006/12594 cut-off events. [2024-06-28 03:23:19,092 INFO L125 PetriNetUnfolderBase]: For 6820/6820 co-relation queries the response was YES. [2024-06-28 03:23:19,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31737 conditions, 12594 events. 9006/12594 cut-off events. For 6820/6820 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 69480 event pairs, 4478 based on Foata normal form. 8/12444 useless extension candidates. Maximal degree in co-relation 31723. Up to 12137 conditions per place. [2024-06-28 03:23:19,160 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 70 selfloop transitions, 16 changer transitions 0/95 dead transitions. [2024-06-28 03:23:19,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 95 transitions, 486 flow [2024-06-28 03:23:19,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:23:19,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:23:19,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2024-06-28 03:23:19,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5849056603773585 [2024-06-28 03:23:19,162 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 181 flow. Second operand 6 states and 186 transitions. [2024-06-28 03:23:19,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 95 transitions, 486 flow [2024-06-28 03:23:19,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 95 transitions, 458 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-28 03:23:19,165 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 243 flow [2024-06-28 03:23:19,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=243, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2024-06-28 03:23:19,166 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2024-06-28 03:23:19,166 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 243 flow [2024-06-28 03:23:19,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:19,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:19,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:19,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:23:19,167 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:23:19,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:19,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1313929334, now seen corresponding path program 1 times [2024-06-28 03:23:19,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:19,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122692102] [2024-06-28 03:23:19,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:19,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:19,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:19,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:19,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122692102] [2024-06-28 03:23:19,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122692102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:19,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:19,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:23:19,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909987255] [2024-06-28 03:23:19,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:19,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:23:19,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:19,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:23:19,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:23:20,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-28 03:23:20,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 243 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:20,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:20,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-28 03:23:20,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:21,319 INFO L124 PetriNetUnfolderBase]: 7838/11286 cut-off events. [2024-06-28 03:23:21,319 INFO L125 PetriNetUnfolderBase]: For 11339/11339 co-relation queries the response was YES. [2024-06-28 03:23:21,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31053 conditions, 11286 events. 7838/11286 cut-off events. For 11339/11339 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 64364 event pairs, 4142 based on Foata normal form. 6/11114 useless extension candidates. Maximal degree in co-relation 31036. Up to 10642 conditions per place. [2024-06-28 03:23:21,391 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 60 selfloop transitions, 10 changer transitions 0/79 dead transitions. [2024-06-28 03:23:21,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 79 transitions, 451 flow [2024-06-28 03:23:21,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:23:21,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:23:21,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-06-28 03:23:21,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5169811320754717 [2024-06-28 03:23:21,395 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 243 flow. Second operand 5 states and 137 transitions. [2024-06-28 03:23:21,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 79 transitions, 451 flow [2024-06-28 03:23:21,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 79 transitions, 413 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 03:23:21,404 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 266 flow [2024-06-28 03:23:21,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=266, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2024-06-28 03:23:21,406 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 8 predicate places. [2024-06-28 03:23:21,406 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 266 flow [2024-06-28 03:23:21,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:21,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:21,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:21,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:23:21,407 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:23:21,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:21,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1369653141, now seen corresponding path program 1 times [2024-06-28 03:23:21,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:21,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448426891] [2024-06-28 03:23:21,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:21,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:22,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:22,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:22,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448426891] [2024-06-28 03:23:22,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448426891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:22,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:22,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:23:22,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193968857] [2024-06-28 03:23:22,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:22,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:23:22,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:22,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:23:22,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:23:22,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 03:23:22,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 266 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:22,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:22,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 03:23:22,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:24,067 INFO L124 PetriNetUnfolderBase]: 9032/12664 cut-off events. [2024-06-28 03:23:24,067 INFO L125 PetriNetUnfolderBase]: For 20332/20332 co-relation queries the response was YES. [2024-06-28 03:23:24,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38292 conditions, 12664 events. 9032/12664 cut-off events. For 20332/20332 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 69757 event pairs, 4540 based on Foata normal form. 6/12512 useless extension candidates. Maximal degree in co-relation 38273. Up to 12129 conditions per place. [2024-06-28 03:23:24,152 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 73 selfloop transitions, 21 changer transitions 0/102 dead transitions. [2024-06-28 03:23:24,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 102 transitions, 616 flow [2024-06-28 03:23:24,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:23:24,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:23:24,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 168 transitions. [2024-06-28 03:23:24,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283018867924528 [2024-06-28 03:23:24,154 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 266 flow. Second operand 6 states and 168 transitions. [2024-06-28 03:23:24,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 102 transitions, 616 flow [2024-06-28 03:23:24,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 102 transitions, 587 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 03:23:24,158 INFO L231 Difference]: Finished difference. Result has 67 places, 69 transitions, 354 flow [2024-06-28 03:23:24,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=354, PETRI_PLACES=67, PETRI_TRANSITIONS=69} [2024-06-28 03:23:24,159 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 11 predicate places. [2024-06-28 03:23:24,159 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 69 transitions, 354 flow [2024-06-28 03:23:24,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:24,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:24,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:24,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:23:24,160 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:23:24,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:24,161 INFO L85 PathProgramCache]: Analyzing trace with hash 79020493, now seen corresponding path program 2 times [2024-06-28 03:23:24,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:24,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742265317] [2024-06-28 03:23:24,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:24,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:24,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:24,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:24,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742265317] [2024-06-28 03:23:24,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742265317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:24,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:24,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:23:24,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002415314] [2024-06-28 03:23:24,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:24,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:23:24,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:24,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:23:24,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:23:25,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 03:23:25,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 69 transitions, 354 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:25,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:25,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 03:23:25,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:26,414 INFO L124 PetriNetUnfolderBase]: 9014/12644 cut-off events. [2024-06-28 03:23:26,414 INFO L125 PetriNetUnfolderBase]: For 29993/30002 co-relation queries the response was YES. [2024-06-28 03:23:26,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41417 conditions, 12644 events. 9014/12644 cut-off events. For 29993/30002 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 69773 event pairs, 4536 based on Foata normal form. 12/12500 useless extension candidates. Maximal degree in co-relation 41397. Up to 12114 conditions per place. [2024-06-28 03:23:26,489 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 66 selfloop transitions, 21 changer transitions 0/95 dead transitions. [2024-06-28 03:23:26,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 95 transitions, 594 flow [2024-06-28 03:23:26,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:23:26,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:23:26,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-06-28 03:23:26,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5062893081761006 [2024-06-28 03:23:26,491 INFO L175 Difference]: Start difference. First operand has 67 places, 69 transitions, 354 flow. Second operand 6 states and 161 transitions. [2024-06-28 03:23:26,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 95 transitions, 594 flow [2024-06-28 03:23:26,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 95 transitions, 548 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-28 03:23:26,506 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 361 flow [2024-06-28 03:23:26,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=361, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2024-06-28 03:23:26,507 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 15 predicate places. [2024-06-28 03:23:26,507 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 361 flow [2024-06-28 03:23:26,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:26,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:26,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:26,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:23:26,508 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:23:26,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:26,508 INFO L85 PathProgramCache]: Analyzing trace with hash 399686673, now seen corresponding path program 1 times [2024-06-28 03:23:26,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:26,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725788318] [2024-06-28 03:23:26,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:26,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:27,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:27,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:27,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725788318] [2024-06-28 03:23:27,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725788318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:27,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:27,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:23:27,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718464570] [2024-06-28 03:23:27,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:27,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:23:27,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:27,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:23:27,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:23:27,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 03:23:27,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 361 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:27,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:27,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 03:23:27,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:28,877 INFO L124 PetriNetUnfolderBase]: 9127/12828 cut-off events. [2024-06-28 03:23:28,878 INFO L125 PetriNetUnfolderBase]: For 34822/34826 co-relation queries the response was YES. [2024-06-28 03:23:28,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42498 conditions, 12828 events. 9127/12828 cut-off events. For 34822/34826 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 70933 event pairs, 4770 based on Foata normal form. 10/12685 useless extension candidates. Maximal degree in co-relation 42476. Up to 12284 conditions per place. [2024-06-28 03:23:28,953 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 89 selfloop transitions, 32 changer transitions 0/129 dead transitions. [2024-06-28 03:23:28,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 129 transitions, 826 flow [2024-06-28 03:23:28,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:23:28,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:23:28,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-28 03:23:28,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070754716981132 [2024-06-28 03:23:28,955 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 361 flow. Second operand 8 states and 215 transitions. [2024-06-28 03:23:28,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 129 transitions, 826 flow [2024-06-28 03:23:28,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 129 transitions, 752 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:23:28,968 INFO L231 Difference]: Finished difference. Result has 75 places, 88 transitions, 513 flow [2024-06-28 03:23:28,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=513, PETRI_PLACES=75, PETRI_TRANSITIONS=88} [2024-06-28 03:23:28,969 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 19 predicate places. [2024-06-28 03:23:28,969 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 88 transitions, 513 flow [2024-06-28 03:23:28,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:28,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:28,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:28,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:23:28,970 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:23:28,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:28,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1922742311, now seen corresponding path program 2 times [2024-06-28 03:23:28,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:28,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886630695] [2024-06-28 03:23:28,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:28,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:29,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:29,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:29,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886630695] [2024-06-28 03:23:29,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886630695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:29,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:29,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:23:29,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211753830] [2024-06-28 03:23:29,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:29,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:23:29,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:29,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:23:29,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:23:29,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 03:23:29,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 88 transitions, 513 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:29,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:29,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 03:23:29,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:31,308 INFO L124 PetriNetUnfolderBase]: 9171/12897 cut-off events. [2024-06-28 03:23:31,309 INFO L125 PetriNetUnfolderBase]: For 47391/47399 co-relation queries the response was YES. [2024-06-28 03:23:31,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46166 conditions, 12897 events. 9171/12897 cut-off events. For 47391/47399 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 71469 event pairs, 4670 based on Foata normal form. 14/12753 useless extension candidates. Maximal degree in co-relation 46142. Up to 12306 conditions per place. [2024-06-28 03:23:31,387 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 89 selfloop transitions, 34 changer transitions 0/131 dead transitions. [2024-06-28 03:23:31,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 131 transitions, 931 flow [2024-06-28 03:23:31,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:23:31,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:23:31,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-06-28 03:23:31,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5094339622641509 [2024-06-28 03:23:31,389 INFO L175 Difference]: Start difference. First operand has 75 places, 88 transitions, 513 flow. Second operand 7 states and 189 transitions. [2024-06-28 03:23:31,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 131 transitions, 931 flow [2024-06-28 03:23:31,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 131 transitions, 873 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-28 03:23:31,410 INFO L231 Difference]: Finished difference. Result has 79 places, 92 transitions, 590 flow [2024-06-28 03:23:31,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=590, PETRI_PLACES=79, PETRI_TRANSITIONS=92} [2024-06-28 03:23:31,411 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 23 predicate places. [2024-06-28 03:23:31,411 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 92 transitions, 590 flow [2024-06-28 03:23:31,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:31,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:31,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:31,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:23:31,412 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:23:31,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:31,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1752044531, now seen corresponding path program 3 times [2024-06-28 03:23:31,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:31,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412286111] [2024-06-28 03:23:31,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:31,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:32,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:32,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:32,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412286111] [2024-06-28 03:23:32,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412286111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:32,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:32,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:23:32,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714559442] [2024-06-28 03:23:32,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:32,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:23:32,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:32,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:23:32,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:23:32,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 03:23:32,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 92 transitions, 590 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:32,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:32,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 03:23:32,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:33,988 INFO L124 PetriNetUnfolderBase]: 9215/12970 cut-off events. [2024-06-28 03:23:33,988 INFO L125 PetriNetUnfolderBase]: For 62037/62039 co-relation queries the response was YES. [2024-06-28 03:23:34,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49706 conditions, 12970 events. 9215/12970 cut-off events. For 62037/62039 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 71674 event pairs, 4262 based on Foata normal form. 6/12818 useless extension candidates. Maximal degree in co-relation 49681. Up to 12175 conditions per place. [2024-06-28 03:23:34,081 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 82 selfloop transitions, 50 changer transitions 0/140 dead transitions. [2024-06-28 03:23:34,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 140 transitions, 1120 flow [2024-06-28 03:23:34,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:23:34,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:23:34,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 196 transitions. [2024-06-28 03:23:34,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283018867924528 [2024-06-28 03:23:34,083 INFO L175 Difference]: Start difference. First operand has 79 places, 92 transitions, 590 flow. Second operand 7 states and 196 transitions. [2024-06-28 03:23:34,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 140 transitions, 1120 flow [2024-06-28 03:23:34,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 140 transitions, 1001 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-28 03:23:34,113 INFO L231 Difference]: Finished difference. Result has 81 places, 100 transitions, 696 flow [2024-06-28 03:23:34,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=696, PETRI_PLACES=81, PETRI_TRANSITIONS=100} [2024-06-28 03:23:34,114 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 25 predicate places. [2024-06-28 03:23:34,114 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 100 transitions, 696 flow [2024-06-28 03:23:34,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:34,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:34,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:34,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:23:34,115 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:23:34,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:34,115 INFO L85 PathProgramCache]: Analyzing trace with hash 916479689, now seen corresponding path program 4 times [2024-06-28 03:23:34,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:34,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364246085] [2024-06-28 03:23:34,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:34,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:35,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:35,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:35,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364246085] [2024-06-28 03:23:35,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364246085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:35,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:35,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:23:35,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280500562] [2024-06-28 03:23:35,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:35,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:23:35,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:35,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:23:35,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:23:35,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 03:23:35,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 100 transitions, 696 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:35,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:35,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 03:23:35,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:36,946 INFO L124 PetriNetUnfolderBase]: 9197/12948 cut-off events. [2024-06-28 03:23:36,947 INFO L125 PetriNetUnfolderBase]: For 63066/63068 co-relation queries the response was YES. [2024-06-28 03:23:36,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49571 conditions, 12948 events. 9197/12948 cut-off events. For 63066/63068 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 71677 event pairs, 4270 based on Foata normal form. 6/12786 useless extension candidates. Maximal degree in co-relation 49545. Up to 12160 conditions per place. [2024-06-28 03:23:37,009 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 76 selfloop transitions, 50 changer transitions 0/134 dead transitions. [2024-06-28 03:23:37,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 134 transitions, 1052 flow [2024-06-28 03:23:37,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:23:37,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:23:37,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-06-28 03:23:37,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5094339622641509 [2024-06-28 03:23:37,011 INFO L175 Difference]: Start difference. First operand has 81 places, 100 transitions, 696 flow. Second operand 7 states and 189 transitions. [2024-06-28 03:23:37,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 134 transitions, 1052 flow [2024-06-28 03:23:37,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 134 transitions, 969 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 03:23:37,040 INFO L231 Difference]: Finished difference. Result has 85 places, 100 transitions, 724 flow [2024-06-28 03:23:37,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=724, PETRI_PLACES=85, PETRI_TRANSITIONS=100} [2024-06-28 03:23:37,041 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 29 predicate places. [2024-06-28 03:23:37,041 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 100 transitions, 724 flow [2024-06-28 03:23:37,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:37,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:37,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:37,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:23:37,042 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:23:37,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:37,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1929422315, now seen corresponding path program 1 times [2024-06-28 03:23:37,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:37,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167256236] [2024-06-28 03:23:37,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:37,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:38,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:38,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:38,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167256236] [2024-06-28 03:23:38,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167256236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:38,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:38,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:23:38,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572532793] [2024-06-28 03:23:38,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:38,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:23:38,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:38,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:23:38,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:23:38,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-28 03:23:38,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 100 transitions, 724 flow. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:38,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:38,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-28 03:23:38,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:39,841 INFO L124 PetriNetUnfolderBase]: 8032/11523 cut-off events. [2024-06-28 03:23:39,842 INFO L125 PetriNetUnfolderBase]: For 61197/61199 co-relation queries the response was YES. [2024-06-28 03:23:39,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45000 conditions, 11523 events. 8032/11523 cut-off events. For 61197/61199 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 65581 event pairs, 3728 based on Foata normal form. 6/11399 useless extension candidates. Maximal degree in co-relation 44972. Up to 10879 conditions per place. [2024-06-28 03:23:39,915 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 113 selfloop transitions, 17 changer transitions 0/139 dead transitions. [2024-06-28 03:23:39,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 139 transitions, 1149 flow [2024-06-28 03:23:39,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:23:39,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:23:39,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-06-28 03:23:39,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067385444743935 [2024-06-28 03:23:39,917 INFO L175 Difference]: Start difference. First operand has 85 places, 100 transitions, 724 flow. Second operand 7 states and 188 transitions. [2024-06-28 03:23:39,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 139 transitions, 1149 flow [2024-06-28 03:23:39,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 139 transitions, 1008 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 03:23:39,949 INFO L231 Difference]: Finished difference. Result has 87 places, 107 transitions, 705 flow [2024-06-28 03:23:39,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=705, PETRI_PLACES=87, PETRI_TRANSITIONS=107} [2024-06-28 03:23:39,950 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 31 predicate places. [2024-06-28 03:23:39,950 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 107 transitions, 705 flow [2024-06-28 03:23:39,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:39,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:39,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:39,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:23:39,951 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:23:39,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:39,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1037395287, now seen corresponding path program 1 times [2024-06-28 03:23:39,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:39,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344487543] [2024-06-28 03:23:39,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:39,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:40,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:40,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:40,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344487543] [2024-06-28 03:23:40,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344487543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:40,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:40,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:23:40,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420234004] [2024-06-28 03:23:40,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:40,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:23:40,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:40,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:23:40,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:23:41,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-06-28 03:23:41,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 107 transitions, 705 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:41,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:41,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-06-28 03:23:41,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:42,243 INFO L124 PetriNetUnfolderBase]: 7536/11386 cut-off events. [2024-06-28 03:23:42,243 INFO L125 PetriNetUnfolderBase]: For 72629/72646 co-relation queries the response was YES. [2024-06-28 03:23:42,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46091 conditions, 11386 events. 7536/11386 cut-off events. For 72629/72646 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 70209 event pairs, 3799 based on Foata normal form. 17/11353 useless extension candidates. Maximal degree in co-relation 46061. Up to 10273 conditions per place. [2024-06-28 03:23:42,314 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 101 selfloop transitions, 10 changer transitions 0/125 dead transitions. [2024-06-28 03:23:42,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 125 transitions, 1007 flow [2024-06-28 03:23:42,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:23:42,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:23:42,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-06-28 03:23:42,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132075471698113 [2024-06-28 03:23:42,316 INFO L175 Difference]: Start difference. First operand has 87 places, 107 transitions, 705 flow. Second operand 5 states and 136 transitions. [2024-06-28 03:23:42,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 125 transitions, 1007 flow [2024-06-28 03:23:42,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 125 transitions, 947 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 03:23:42,352 INFO L231 Difference]: Finished difference. Result has 88 places, 111 transitions, 718 flow [2024-06-28 03:23:42,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=718, PETRI_PLACES=88, PETRI_TRANSITIONS=111} [2024-06-28 03:23:42,352 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 32 predicate places. [2024-06-28 03:23:42,352 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 111 transitions, 718 flow [2024-06-28 03:23:42,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:42,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:42,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:42,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:23:42,353 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:23:42,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:42,354 INFO L85 PathProgramCache]: Analyzing trace with hash -30491952, now seen corresponding path program 1 times [2024-06-28 03:23:42,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:42,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73210818] [2024-06-28 03:23:42,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:42,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:42,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:43,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:43,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:43,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73210818] [2024-06-28 03:23:43,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73210818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:43,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:43,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:23:43,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385646541] [2024-06-28 03:23:43,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:43,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:23:43,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:43,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:23:43,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:23:43,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 03:23:43,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 111 transitions, 718 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:43,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:43,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 03:23:43,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:45,515 INFO L124 PetriNetUnfolderBase]: 9536/13549 cut-off events. [2024-06-28 03:23:45,516 INFO L125 PetriNetUnfolderBase]: For 108952/108960 co-relation queries the response was YES. [2024-06-28 03:23:45,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59405 conditions, 13549 events. 9536/13549 cut-off events. For 108952/108960 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 76748 event pairs, 3766 based on Foata normal form. 32/13499 useless extension candidates. Maximal degree in co-relation 59374. Up to 12344 conditions per place. [2024-06-28 03:23:45,622 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 131 selfloop transitions, 41 changer transitions 0/180 dead transitions. [2024-06-28 03:23:45,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 180 transitions, 1428 flow [2024-06-28 03:23:45,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:23:45,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:23:45,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 248 transitions. [2024-06-28 03:23:45,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.519916142557652 [2024-06-28 03:23:45,632 INFO L175 Difference]: Start difference. First operand has 88 places, 111 transitions, 718 flow. Second operand 9 states and 248 transitions. [2024-06-28 03:23:45,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 180 transitions, 1428 flow [2024-06-28 03:23:45,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 180 transitions, 1385 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 03:23:45,696 INFO L231 Difference]: Finished difference. Result has 94 places, 115 transitions, 846 flow [2024-06-28 03:23:45,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=846, PETRI_PLACES=94, PETRI_TRANSITIONS=115} [2024-06-28 03:23:45,698 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 38 predicate places. [2024-06-28 03:23:45,698 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 115 transitions, 846 flow [2024-06-28 03:23:45,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:45,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:45,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:45,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:23:45,699 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:23:45,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:45,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1244817752, now seen corresponding path program 2 times [2024-06-28 03:23:45,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:45,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143764586] [2024-06-28 03:23:45,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:45,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:46,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:46,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:46,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143764586] [2024-06-28 03:23:46,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143764586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:46,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:46,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:23:46,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104312720] [2024-06-28 03:23:46,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:46,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:23:46,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:46,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:23:46,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:23:47,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 03:23:47,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 115 transitions, 846 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:47,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:47,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 03:23:47,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:48,977 INFO L124 PetriNetUnfolderBase]: 9467/13456 cut-off events. [2024-06-28 03:23:48,977 INFO L125 PetriNetUnfolderBase]: For 124117/124125 co-relation queries the response was YES. [2024-06-28 03:23:49,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60801 conditions, 13456 events. 9467/13456 cut-off events. For 124117/124125 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 76003 event pairs, 4403 based on Foata normal form. 38/13422 useless extension candidates. Maximal degree in co-relation 60769. Up to 12526 conditions per place. [2024-06-28 03:23:49,086 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 122 selfloop transitions, 36 changer transitions 0/166 dead transitions. [2024-06-28 03:23:49,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 166 transitions, 1342 flow [2024-06-28 03:23:49,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:23:49,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:23:49,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 217 transitions. [2024-06-28 03:23:49,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5117924528301887 [2024-06-28 03:23:49,088 INFO L175 Difference]: Start difference. First operand has 94 places, 115 transitions, 846 flow. Second operand 8 states and 217 transitions. [2024-06-28 03:23:49,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 166 transitions, 1342 flow [2024-06-28 03:23:49,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 166 transitions, 1273 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 03:23:49,157 INFO L231 Difference]: Finished difference. Result has 97 places, 115 transitions, 861 flow [2024-06-28 03:23:49,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=861, PETRI_PLACES=97, PETRI_TRANSITIONS=115} [2024-06-28 03:23:49,158 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 41 predicate places. [2024-06-28 03:23:49,158 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 115 transitions, 861 flow [2024-06-28 03:23:49,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:49,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:49,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:49,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:23:49,159 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:23:49,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:49,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1499359614, now seen corresponding path program 3 times [2024-06-28 03:23:49,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:49,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426428950] [2024-06-28 03:23:49,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:49,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:50,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:50,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:50,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426428950] [2024-06-28 03:23:50,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426428950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:50,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:50,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:23:50,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891093913] [2024-06-28 03:23:50,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:50,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:23:50,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:50,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:23:50,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:23:50,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 03:23:50,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 115 transitions, 861 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:50,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:50,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 03:23:50,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:52,117 INFO L124 PetriNetUnfolderBase]: 9631/13707 cut-off events. [2024-06-28 03:23:52,118 INFO L125 PetriNetUnfolderBase]: For 138414/138419 co-relation queries the response was YES. [2024-06-28 03:23:52,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63031 conditions, 13707 events. 9631/13707 cut-off events. For 138414/138419 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 77694 event pairs, 4102 based on Foata normal form. 30/13656 useless extension candidates. Maximal degree in co-relation 62997. Up to 12612 conditions per place. [2024-06-28 03:23:52,226 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 102 selfloop transitions, 55 changer transitions 0/165 dead transitions. [2024-06-28 03:23:52,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 165 transitions, 1381 flow [2024-06-28 03:23:52,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:23:52,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:23:52,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 221 transitions. [2024-06-28 03:23:52,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212264150943396 [2024-06-28 03:23:52,228 INFO L175 Difference]: Start difference. First operand has 97 places, 115 transitions, 861 flow. Second operand 8 states and 221 transitions. [2024-06-28 03:23:52,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 165 transitions, 1381 flow [2024-06-28 03:23:52,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 165 transitions, 1299 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 03:23:52,302 INFO L231 Difference]: Finished difference. Result has 98 places, 117 transitions, 945 flow [2024-06-28 03:23:52,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=945, PETRI_PLACES=98, PETRI_TRANSITIONS=117} [2024-06-28 03:23:52,303 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 42 predicate places. [2024-06-28 03:23:52,303 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 117 transitions, 945 flow [2024-06-28 03:23:52,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:52,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:52,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:52,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:23:52,304 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:23:52,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:52,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1499544312, now seen corresponding path program 1 times [2024-06-28 03:23:52,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:52,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744519546] [2024-06-28 03:23:52,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:52,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:53,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:53,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:53,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744519546] [2024-06-28 03:23:53,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744519546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:53,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:53,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:23:53,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631458173] [2024-06-28 03:23:53,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:53,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:23:53,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:53,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:23:53,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:23:53,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 03:23:53,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 117 transitions, 945 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:53,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:53,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 03:23:53,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:55,931 INFO L124 PetriNetUnfolderBase]: 9667/13713 cut-off events. [2024-06-28 03:23:55,932 INFO L125 PetriNetUnfolderBase]: For 154994/155005 co-relation queries the response was YES. [2024-06-28 03:23:56,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65230 conditions, 13713 events. 9667/13713 cut-off events. For 154994/155005 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 77454 event pairs, 4179 based on Foata normal form. 14/13694 useless extension candidates. Maximal degree in co-relation 65195. Up to 13022 conditions per place. [2024-06-28 03:23:56,120 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 126 selfloop transitions, 35 changer transitions 0/169 dead transitions. [2024-06-28 03:23:56,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 169 transitions, 1496 flow [2024-06-28 03:23:56,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:23:56,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:23:56,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-06-28 03:23:56,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047169811320755 [2024-06-28 03:23:56,122 INFO L175 Difference]: Start difference. First operand has 98 places, 117 transitions, 945 flow. Second operand 8 states and 214 transitions. [2024-06-28 03:23:56,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 169 transitions, 1496 flow [2024-06-28 03:23:56,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 169 transitions, 1366 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 03:23:56,239 INFO L231 Difference]: Finished difference. Result has 101 places, 124 transitions, 988 flow [2024-06-28 03:23:56,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=988, PETRI_PLACES=101, PETRI_TRANSITIONS=124} [2024-06-28 03:23:56,240 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 45 predicate places. [2024-06-28 03:23:56,242 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 124 transitions, 988 flow [2024-06-28 03:23:56,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:56,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:56,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:56,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:23:56,243 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:23:56,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:56,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1882525740, now seen corresponding path program 1 times [2024-06-28 03:23:56,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:56,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469569983] [2024-06-28 03:23:56,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:56,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:57,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:57,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:57,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469569983] [2024-06-28 03:23:57,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469569983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:57,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:57,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:23:57,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405044716] [2024-06-28 03:23:57,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:57,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:23:57,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:57,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:23:57,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:23:57,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-28 03:23:57,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 124 transitions, 988 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:57,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:57,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-28 03:23:57,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:58,908 INFO L124 PetriNetUnfolderBase]: 9172/13255 cut-off events. [2024-06-28 03:23:58,908 INFO L125 PetriNetUnfolderBase]: For 176771/176791 co-relation queries the response was YES. [2024-06-28 03:23:58,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65830 conditions, 13255 events. 9172/13255 cut-off events. For 176771/176791 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 77527 event pairs, 4188 based on Foata normal form. 22/13149 useless extension candidates. Maximal degree in co-relation 65793. Up to 12391 conditions per place. [2024-06-28 03:23:59,020 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 108 selfloop transitions, 28 changer transitions 0/151 dead transitions. [2024-06-28 03:23:59,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 151 transitions, 1380 flow [2024-06-28 03:23:59,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:23:59,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:23:59,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-06-28 03:23:59,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5062893081761006 [2024-06-28 03:23:59,036 INFO L175 Difference]: Start difference. First operand has 101 places, 124 transitions, 988 flow. Second operand 6 states and 161 transitions. [2024-06-28 03:23:59,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 151 transitions, 1380 flow [2024-06-28 03:23:59,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 151 transitions, 1270 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 03:23:59,112 INFO L231 Difference]: Finished difference. Result has 102 places, 128 transitions, 1003 flow [2024-06-28 03:23:59,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1003, PETRI_PLACES=102, PETRI_TRANSITIONS=128} [2024-06-28 03:23:59,113 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 46 predicate places. [2024-06-28 03:23:59,113 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 128 transitions, 1003 flow [2024-06-28 03:23:59,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:59,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:59,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:59,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:23:59,114 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:23:59,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:59,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1314320742, now seen corresponding path program 4 times [2024-06-28 03:23:59,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:59,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820892107] [2024-06-28 03:23:59,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:59,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:00,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:00,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:00,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820892107] [2024-06-28 03:24:00,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820892107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:00,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:00,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:24:00,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875730763] [2024-06-28 03:24:00,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:00,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:24:00,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:00,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:24:00,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:24:00,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 03:24:00,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 128 transitions, 1003 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:00,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:00,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 03:24:00,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:02,501 INFO L124 PetriNetUnfolderBase]: 9761/13882 cut-off events. [2024-06-28 03:24:02,501 INFO L125 PetriNetUnfolderBase]: For 202489/202491 co-relation queries the response was YES. [2024-06-28 03:24:02,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71581 conditions, 13882 events. 9761/13882 cut-off events. For 202489/202491 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 78624 event pairs, 4054 based on Foata normal form. 30/13798 useless extension candidates. Maximal degree in co-relation 71543. Up to 12804 conditions per place. [2024-06-28 03:24:02,614 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 111 selfloop transitions, 57 changer transitions 0/176 dead transitions. [2024-06-28 03:24:02,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 176 transitions, 1559 flow [2024-06-28 03:24:02,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:24:02,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:24:02,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 217 transitions. [2024-06-28 03:24:02,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5117924528301887 [2024-06-28 03:24:02,616 INFO L175 Difference]: Start difference. First operand has 102 places, 128 transitions, 1003 flow. Second operand 8 states and 217 transitions. [2024-06-28 03:24:02,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 176 transitions, 1559 flow [2024-06-28 03:24:02,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 176 transitions, 1476 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 03:24:02,710 INFO L231 Difference]: Finished difference. Result has 106 places, 130 transitions, 1100 flow [2024-06-28 03:24:02,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1100, PETRI_PLACES=106, PETRI_TRANSITIONS=130} [2024-06-28 03:24:02,711 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 50 predicate places. [2024-06-28 03:24:02,711 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 130 transitions, 1100 flow [2024-06-28 03:24:02,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:02,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:02,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:02,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:24:02,712 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:24:02,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:02,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1251284884, now seen corresponding path program 2 times [2024-06-28 03:24:02,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:02,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203058196] [2024-06-28 03:24:02,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:02,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:03,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:03,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:03,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203058196] [2024-06-28 03:24:03,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203058196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:03,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:03,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:24:03,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126676371] [2024-06-28 03:24:03,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:03,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:24:03,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:03,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:24:03,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:24:04,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 03:24:04,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 130 transitions, 1100 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:04,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:04,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 03:24:04,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:05,912 INFO L124 PetriNetUnfolderBase]: 9819/13969 cut-off events. [2024-06-28 03:24:05,912 INFO L125 PetriNetUnfolderBase]: For 221031/221052 co-relation queries the response was YES. [2024-06-28 03:24:05,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74138 conditions, 13969 events. 9819/13969 cut-off events. For 221031/221052 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 79365 event pairs, 4183 based on Foata normal form. 20/13944 useless extension candidates. Maximal degree in co-relation 74099. Up to 13237 conditions per place. [2024-06-28 03:24:06,048 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 132 selfloop transitions, 43 changer transitions 0/183 dead transitions. [2024-06-28 03:24:06,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 183 transitions, 1716 flow [2024-06-28 03:24:06,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:24:06,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:24:06,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-28 03:24:06,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49528301886792453 [2024-06-28 03:24:06,055 INFO L175 Difference]: Start difference. First operand has 106 places, 130 transitions, 1100 flow. Second operand 8 states and 210 transitions. [2024-06-28 03:24:06,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 183 transitions, 1716 flow [2024-06-28 03:24:06,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 183 transitions, 1566 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 03:24:06,187 INFO L231 Difference]: Finished difference. Result has 109 places, 141 transitions, 1194 flow [2024-06-28 03:24:06,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=964, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1194, PETRI_PLACES=109, PETRI_TRANSITIONS=141} [2024-06-28 03:24:06,188 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 53 predicate places. [2024-06-28 03:24:06,188 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 141 transitions, 1194 flow [2024-06-28 03:24:06,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:06,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:06,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:06,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:24:06,189 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:24:06,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:06,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1250988214, now seen corresponding path program 3 times [2024-06-28 03:24:06,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:06,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173884913] [2024-06-28 03:24:06,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:06,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:06,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:07,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:07,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:07,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173884913] [2024-06-28 03:24:07,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173884913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:07,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:07,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:24:07,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061606607] [2024-06-28 03:24:07,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:07,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:24:07,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:07,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:24:07,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:24:07,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 03:24:07,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 141 transitions, 1194 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:07,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:07,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 03:24:07,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:09,366 INFO L124 PetriNetUnfolderBase]: 9855/14005 cut-off events. [2024-06-28 03:24:09,366 INFO L125 PetriNetUnfolderBase]: For 245285/245306 co-relation queries the response was YES. [2024-06-28 03:24:09,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77041 conditions, 14005 events. 9855/14005 cut-off events. For 245285/245306 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 79393 event pairs, 3906 based on Foata normal form. 20/13980 useless extension candidates. Maximal degree in co-relation 77000. Up to 13152 conditions per place. [2024-06-28 03:24:09,504 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 131 selfloop transitions, 54 changer transitions 0/193 dead transitions. [2024-06-28 03:24:09,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 193 transitions, 1952 flow [2024-06-28 03:24:09,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:24:09,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:24:09,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-06-28 03:24:09,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047169811320755 [2024-06-28 03:24:09,506 INFO L175 Difference]: Start difference. First operand has 109 places, 141 transitions, 1194 flow. Second operand 8 states and 214 transitions. [2024-06-28 03:24:09,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 193 transitions, 1952 flow [2024-06-28 03:24:09,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 193 transitions, 1844 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-28 03:24:09,644 INFO L231 Difference]: Finished difference. Result has 114 places, 147 transitions, 1346 flow [2024-06-28 03:24:09,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1346, PETRI_PLACES=114, PETRI_TRANSITIONS=147} [2024-06-28 03:24:09,645 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 58 predicate places. [2024-06-28 03:24:09,645 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 147 transitions, 1346 flow [2024-06-28 03:24:09,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:09,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:09,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:09,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:24:09,646 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:24:09,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:09,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1487460244, now seen corresponding path program 4 times [2024-06-28 03:24:09,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:09,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838151676] [2024-06-28 03:24:09,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:09,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:10,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:10,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:10,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838151676] [2024-06-28 03:24:10,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838151676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:10,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:10,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:24:10,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886046742] [2024-06-28 03:24:10,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:10,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:24:10,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:10,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:24:10,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:24:11,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 03:24:11,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 147 transitions, 1346 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:11,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:11,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 03:24:11,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:12,843 INFO L124 PetriNetUnfolderBase]: 9840/14000 cut-off events. [2024-06-28 03:24:12,843 INFO L125 PetriNetUnfolderBase]: For 268303/268324 co-relation queries the response was YES. [2024-06-28 03:24:12,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77806 conditions, 14000 events. 9840/14000 cut-off events. For 268303/268324 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 79544 event pairs, 4196 based on Foata normal form. 20/13975 useless extension candidates. Maximal degree in co-relation 77764. Up to 13268 conditions per place. [2024-06-28 03:24:12,967 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 139 selfloop transitions, 42 changer transitions 0/189 dead transitions. [2024-06-28 03:24:12,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 189 transitions, 1848 flow [2024-06-28 03:24:12,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:24:12,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:24:12,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-28 03:24:12,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49764150943396224 [2024-06-28 03:24:12,971 INFO L175 Difference]: Start difference. First operand has 114 places, 147 transitions, 1346 flow. Second operand 8 states and 211 transitions. [2024-06-28 03:24:12,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 189 transitions, 1848 flow [2024-06-28 03:24:13,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 189 transitions, 1694 flow, removed 54 selfloop flow, removed 4 redundant places. [2024-06-28 03:24:13,161 INFO L231 Difference]: Finished difference. Result has 118 places, 147 transitions, 1286 flow [2024-06-28 03:24:13,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1192, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1286, PETRI_PLACES=118, PETRI_TRANSITIONS=147} [2024-06-28 03:24:13,162 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 62 predicate places. [2024-06-28 03:24:13,162 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 147 transitions, 1286 flow [2024-06-28 03:24:13,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:13,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:13,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:13,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:24:13,163 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:24:13,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:13,163 INFO L85 PathProgramCache]: Analyzing trace with hash 504509558, now seen corresponding path program 2 times [2024-06-28 03:24:13,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:13,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584292180] [2024-06-28 03:24:13,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:13,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:14,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:14,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:14,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584292180] [2024-06-28 03:24:14,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584292180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:14,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:14,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:24:14,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759638526] [2024-06-28 03:24:14,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:14,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:24:14,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:14,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:24:14,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:24:14,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-28 03:24:14,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 147 transitions, 1286 flow. Second operand has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:14,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:14,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-28 03:24:14,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:15,787 INFO L124 PetriNetUnfolderBase]: 9317/13457 cut-off events. [2024-06-28 03:24:15,787 INFO L125 PetriNetUnfolderBase]: For 280176/280191 co-relation queries the response was YES. [2024-06-28 03:24:15,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75349 conditions, 13457 events. 9317/13457 cut-off events. For 280176/280191 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 78692 event pairs, 4168 based on Foata normal form. 15/13398 useless extension candidates. Maximal degree in co-relation 75305. Up to 12560 conditions per place. [2024-06-28 03:24:15,908 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 114 selfloop transitions, 35 changer transitions 0/169 dead transitions. [2024-06-28 03:24:15,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 169 transitions, 1702 flow [2024-06-28 03:24:15,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:24:15,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:24:15,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-06-28 03:24:15,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937106918238994 [2024-06-28 03:24:15,910 INFO L175 Difference]: Start difference. First operand has 118 places, 147 transitions, 1286 flow. Second operand 6 states and 157 transitions. [2024-06-28 03:24:15,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 169 transitions, 1702 flow [2024-06-28 03:24:16,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 169 transitions, 1562 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 03:24:16,053 INFO L231 Difference]: Finished difference. Result has 115 places, 151 transitions, 1295 flow [2024-06-28 03:24:16,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1146, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1295, PETRI_PLACES=115, PETRI_TRANSITIONS=151} [2024-06-28 03:24:16,054 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 59 predicate places. [2024-06-28 03:24:16,054 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 151 transitions, 1295 flow [2024-06-28 03:24:16,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:16,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:16,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:16,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:24:16,055 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:24:16,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:16,055 INFO L85 PathProgramCache]: Analyzing trace with hash -304661680, now seen corresponding path program 1 times [2024-06-28 03:24:16,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:16,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396212354] [2024-06-28 03:24:16,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:16,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:17,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:17,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:17,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396212354] [2024-06-28 03:24:17,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396212354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:17,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:17,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:24:17,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357969418] [2024-06-28 03:24:17,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:17,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:24:17,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:17,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:24:17,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:24:17,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-28 03:24:17,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 151 transitions, 1295 flow. Second operand has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:17,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:17,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-28 03:24:17,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:18,589 INFO L124 PetriNetUnfolderBase]: 8708/12679 cut-off events. [2024-06-28 03:24:18,589 INFO L125 PetriNetUnfolderBase]: For 267596/267598 co-relation queries the response was YES. [2024-06-28 03:24:18,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72982 conditions, 12679 events. 8708/12679 cut-off events. For 267596/267598 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 74187 event pairs, 3583 based on Foata normal form. 4/12612 useless extension candidates. Maximal degree in co-relation 72939. Up to 11906 conditions per place. [2024-06-28 03:24:18,694 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 154 selfloop transitions, 14 changer transitions 0/177 dead transitions. [2024-06-28 03:24:18,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 177 transitions, 1765 flow [2024-06-28 03:24:18,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:24:18,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:24:18,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-06-28 03:24:18,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 03:24:18,696 INFO L175 Difference]: Start difference. First operand has 115 places, 151 transitions, 1295 flow. Second operand 6 states and 159 transitions. [2024-06-28 03:24:18,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 177 transitions, 1765 flow [2024-06-28 03:24:18,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 177 transitions, 1654 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-28 03:24:18,838 INFO L231 Difference]: Finished difference. Result has 117 places, 155 transitions, 1293 flow [2024-06-28 03:24:18,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1184, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1293, PETRI_PLACES=117, PETRI_TRANSITIONS=155} [2024-06-28 03:24:18,838 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 61 predicate places. [2024-06-28 03:24:18,839 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 155 transitions, 1293 flow [2024-06-28 03:24:18,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:18,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:18,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:18,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:24:18,839 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:24:18,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:18,840 INFO L85 PathProgramCache]: Analyzing trace with hash 504515510, now seen corresponding path program 2 times [2024-06-28 03:24:18,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:18,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563480692] [2024-06-28 03:24:18,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:18,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:19,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:19,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:19,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563480692] [2024-06-28 03:24:19,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563480692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:19,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:19,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:24:19,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932416914] [2024-06-28 03:24:19,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:19,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:24:19,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:19,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:24:19,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:24:19,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-28 03:24:19,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 155 transitions, 1293 flow. Second operand has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:19,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:19,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-28 03:24:19,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:21,479 INFO L124 PetriNetUnfolderBase]: 8717/12728 cut-off events. [2024-06-28 03:24:21,479 INFO L125 PetriNetUnfolderBase]: For 288578/288586 co-relation queries the response was YES. [2024-06-28 03:24:21,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75607 conditions, 12728 events. 8717/12728 cut-off events. For 288578/288586 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 74873 event pairs, 3572 based on Foata normal form. 8/12678 useless extension candidates. Maximal degree in co-relation 75563. Up to 11891 conditions per place. [2024-06-28 03:24:21,586 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 149 selfloop transitions, 21 changer transitions 0/179 dead transitions. [2024-06-28 03:24:21,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 179 transitions, 1769 flow [2024-06-28 03:24:21,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:24:21,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:24:21,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-06-28 03:24:21,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 03:24:21,587 INFO L175 Difference]: Start difference. First operand has 117 places, 155 transitions, 1293 flow. Second operand 6 states and 159 transitions. [2024-06-28 03:24:21,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 179 transitions, 1769 flow [2024-06-28 03:24:21,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 179 transitions, 1690 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-28 03:24:21,757 INFO L231 Difference]: Finished difference. Result has 119 places, 159 transitions, 1345 flow [2024-06-28 03:24:21,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1214, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1345, PETRI_PLACES=119, PETRI_TRANSITIONS=159} [2024-06-28 03:24:21,758 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 63 predicate places. [2024-06-28 03:24:21,758 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 159 transitions, 1345 flow [2024-06-28 03:24:21,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:21,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:21,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:21,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:24:21,759 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:24:21,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:21,759 INFO L85 PathProgramCache]: Analyzing trace with hash -298939824, now seen corresponding path program 1 times [2024-06-28 03:24:21,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:21,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653911561] [2024-06-28 03:24:21,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:21,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:22,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:22,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:22,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653911561] [2024-06-28 03:24:22,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653911561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:22,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:22,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:24:22,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87446220] [2024-06-28 03:24:22,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:22,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:24:22,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:22,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:24:22,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:24:23,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-28 03:24:23,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 159 transitions, 1345 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:23,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:23,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-28 03:24:23,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:24,764 INFO L124 PetriNetUnfolderBase]: 9861/14276 cut-off events. [2024-06-28 03:24:24,764 INFO L125 PetriNetUnfolderBase]: For 369036/369065 co-relation queries the response was YES. [2024-06-28 03:24:24,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87471 conditions, 14276 events. 9861/14276 cut-off events. For 369036/369065 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 84330 event pairs, 4360 based on Foata normal form. 17/14204 useless extension candidates. Maximal degree in co-relation 87426. Up to 13348 conditions per place. [2024-06-28 03:24:24,891 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 151 selfloop transitions, 18 changer transitions 0/189 dead transitions. [2024-06-28 03:24:24,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 189 transitions, 1844 flow [2024-06-28 03:24:24,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:24:24,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:24:24,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 03:24:24,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797843665768194 [2024-06-28 03:24:24,893 INFO L175 Difference]: Start difference. First operand has 119 places, 159 transitions, 1345 flow. Second operand 7 states and 178 transitions. [2024-06-28 03:24:24,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 189 transitions, 1844 flow [2024-06-28 03:24:25,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 189 transitions, 1738 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-28 03:24:25,097 INFO L231 Difference]: Finished difference. Result has 123 places, 167 transitions, 1392 flow [2024-06-28 03:24:25,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1244, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1392, PETRI_PLACES=123, PETRI_TRANSITIONS=167} [2024-06-28 03:24:25,098 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 67 predicate places. [2024-06-28 03:24:25,098 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 167 transitions, 1392 flow [2024-06-28 03:24:25,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:25,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:25,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:25,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:24:25,099 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:24:25,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:25,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1571898862, now seen corresponding path program 1 times [2024-06-28 03:24:25,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:25,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097724712] [2024-06-28 03:24:25,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:25,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:25,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:26,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:26,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:26,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097724712] [2024-06-28 03:24:26,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097724712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:26,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:26,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:24:26,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145466540] [2024-06-28 03:24:26,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:26,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:24:26,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:26,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:24:26,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:24:26,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 03:24:26,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 167 transitions, 1392 flow. Second operand has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:26,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:26,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 03:24:26,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:28,776 INFO L124 PetriNetUnfolderBase]: 11290/16063 cut-off events. [2024-06-28 03:24:28,776 INFO L125 PetriNetUnfolderBase]: For 443966/443971 co-relation queries the response was YES. [2024-06-28 03:24:28,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102903 conditions, 16063 events. 11290/16063 cut-off events. For 443966/443971 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 92703 event pairs, 4571 based on Foata normal form. 18/16017 useless extension candidates. Maximal degree in co-relation 102856. Up to 14612 conditions per place. [2024-06-28 03:24:28,945 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 150 selfloop transitions, 79 changer transitions 0/238 dead transitions. [2024-06-28 03:24:28,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 238 transitions, 2249 flow [2024-06-28 03:24:28,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:24:28,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:24:28,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 246 transitions. [2024-06-28 03:24:28,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5157232704402516 [2024-06-28 03:24:28,947 INFO L175 Difference]: Start difference. First operand has 123 places, 167 transitions, 1392 flow. Second operand 9 states and 246 transitions. [2024-06-28 03:24:28,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 238 transitions, 2249 flow [2024-06-28 03:24:29,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 238 transitions, 2158 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-28 03:24:29,207 INFO L231 Difference]: Finished difference. Result has 130 places, 183 transitions, 1715 flow [2024-06-28 03:24:29,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1301, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1715, PETRI_PLACES=130, PETRI_TRANSITIONS=183} [2024-06-28 03:24:29,208 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 74 predicate places. [2024-06-28 03:24:29,208 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 183 transitions, 1715 flow [2024-06-28 03:24:29,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:29,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:29,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:29,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:24:29,208 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:24:29,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:29,209 INFO L85 PathProgramCache]: Analyzing trace with hash -184510122, now seen corresponding path program 2 times [2024-06-28 03:24:29,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:29,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161182445] [2024-06-28 03:24:29,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:29,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:30,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:30,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:30,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161182445] [2024-06-28 03:24:30,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161182445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:30,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:30,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:24:30,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47749668] [2024-06-28 03:24:30,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:30,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:24:30,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:30,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:24:30,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:24:30,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 03:24:30,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 183 transitions, 1715 flow. Second operand has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:30,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:30,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 03:24:30,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:33,165 INFO L124 PetriNetUnfolderBase]: 11532/16461 cut-off events. [2024-06-28 03:24:33,165 INFO L125 PetriNetUnfolderBase]: For 487146/487148 co-relation queries the response was YES. [2024-06-28 03:24:33,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108601 conditions, 16461 events. 11532/16461 cut-off events. For 487146/487148 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 95629 event pairs, 4625 based on Foata normal form. 18/16409 useless extension candidates. Maximal degree in co-relation 108551. Up to 15135 conditions per place. [2024-06-28 03:24:33,336 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 152 selfloop transitions, 86 changer transitions 0/247 dead transitions. [2024-06-28 03:24:33,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 247 transitions, 2546 flow [2024-06-28 03:24:33,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:24:33,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:24:33,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 243 transitions. [2024-06-28 03:24:33,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5094339622641509 [2024-06-28 03:24:33,337 INFO L175 Difference]: Start difference. First operand has 130 places, 183 transitions, 1715 flow. Second operand 9 states and 243 transitions. [2024-06-28 03:24:33,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 247 transitions, 2546 flow [2024-06-28 03:24:33,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 247 transitions, 2374 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-28 03:24:33,993 INFO L231 Difference]: Finished difference. Result has 137 places, 195 transitions, 1938 flow [2024-06-28 03:24:33,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1557, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1938, PETRI_PLACES=137, PETRI_TRANSITIONS=195} [2024-06-28 03:24:33,994 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 81 predicate places. [2024-06-28 03:24:33,994 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 195 transitions, 1938 flow [2024-06-28 03:24:33,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:33,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:33,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:33,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:24:33,995 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:24:33,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:33,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1133373970, now seen corresponding path program 3 times [2024-06-28 03:24:33,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:33,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499874586] [2024-06-28 03:24:33,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:33,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:34,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:35,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:35,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:35,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499874586] [2024-06-28 03:24:35,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499874586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:35,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:35,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:24:35,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731906742] [2024-06-28 03:24:35,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:35,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:24:35,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:35,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:24:35,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:24:35,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 03:24:35,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 195 transitions, 1938 flow. Second operand has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:35,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:35,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 03:24:35,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:38,377 INFO L124 PetriNetUnfolderBase]: 11716/16773 cut-off events. [2024-06-28 03:24:38,378 INFO L125 PetriNetUnfolderBase]: For 529516/529518 co-relation queries the response was YES. [2024-06-28 03:24:38,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113019 conditions, 16773 events. 11716/16773 cut-off events. For 529516/529518 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 98060 event pairs, 4673 based on Foata normal form. 18/16721 useless extension candidates. Maximal degree in co-relation 112966. Up to 15415 conditions per place. [2024-06-28 03:24:38,545 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 158 selfloop transitions, 84 changer transitions 0/251 dead transitions. [2024-06-28 03:24:38,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 251 transitions, 2724 flow [2024-06-28 03:24:38,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:24:38,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:24:38,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 244 transitions. [2024-06-28 03:24:38,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115303983228512 [2024-06-28 03:24:38,547 INFO L175 Difference]: Start difference. First operand has 137 places, 195 transitions, 1938 flow. Second operand 9 states and 244 transitions. [2024-06-28 03:24:38,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 251 transitions, 2724 flow [2024-06-28 03:24:38,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 251 transitions, 2571 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-28 03:24:38,873 INFO L231 Difference]: Finished difference. Result has 144 places, 199 transitions, 2092 flow [2024-06-28 03:24:38,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1785, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2092, PETRI_PLACES=144, PETRI_TRANSITIONS=199} [2024-06-28 03:24:38,873 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 88 predicate places. [2024-06-28 03:24:38,874 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 199 transitions, 2092 flow [2024-06-28 03:24:38,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:38,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:38,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:38,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:24:38,874 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:24:38,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:38,875 INFO L85 PathProgramCache]: Analyzing trace with hash -125927692, now seen corresponding path program 4 times [2024-06-28 03:24:38,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:38,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650406045] [2024-06-28 03:24:38,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:38,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:38,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:40,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:40,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:40,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650406045] [2024-06-28 03:24:40,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650406045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:40,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:40,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:24:40,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141361562] [2024-06-28 03:24:40,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:40,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:24:40,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:40,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:24:40,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:24:40,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 03:24:40,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 199 transitions, 2092 flow. Second operand has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:40,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:40,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 03:24:40,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:42,949 INFO L124 PetriNetUnfolderBase]: 11677/16690 cut-off events. [2024-06-28 03:24:42,949 INFO L125 PetriNetUnfolderBase]: For 558932/558934 co-relation queries the response was YES. [2024-06-28 03:24:43,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112195 conditions, 16690 events. 11677/16690 cut-off events. For 558932/558934 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 97220 event pairs, 4290 based on Foata normal form. 18/16641 useless extension candidates. Maximal degree in co-relation 112140. Up to 14416 conditions per place. [2024-06-28 03:24:43,122 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 138 selfloop transitions, 106 changer transitions 0/253 dead transitions. [2024-06-28 03:24:43,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 253 transitions, 2810 flow [2024-06-28 03:24:43,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:24:43,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:24:43,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 242 transitions. [2024-06-28 03:24:43,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5073375262054507 [2024-06-28 03:24:43,124 INFO L175 Difference]: Start difference. First operand has 144 places, 199 transitions, 2092 flow. Second operand 9 states and 242 transitions. [2024-06-28 03:24:43,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 253 transitions, 2810 flow [2024-06-28 03:24:43,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 253 transitions, 2563 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-28 03:24:43,421 INFO L231 Difference]: Finished difference. Result has 146 places, 200 transitions, 2108 flow [2024-06-28 03:24:43,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1801, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2108, PETRI_PLACES=146, PETRI_TRANSITIONS=200} [2024-06-28 03:24:43,422 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 90 predicate places. [2024-06-28 03:24:43,422 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 200 transitions, 2108 flow [2024-06-28 03:24:43,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:43,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:43,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:43,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:24:43,423 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:24:43,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:43,423 INFO L85 PathProgramCache]: Analyzing trace with hash -909090770, now seen corresponding path program 1 times [2024-06-28 03:24:43,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:43,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328110906] [2024-06-28 03:24:43,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:43,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:44,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:44,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:44,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328110906] [2024-06-28 03:24:44,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328110906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:44,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:44,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:24:44,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700824169] [2024-06-28 03:24:44,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:44,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:24:44,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:44,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:24:44,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:24:44,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-28 03:24:44,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 200 transitions, 2108 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:44,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:44,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-28 03:24:44,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:46,919 INFO L124 PetriNetUnfolderBase]: 10454/15355 cut-off events. [2024-06-28 03:24:46,919 INFO L125 PetriNetUnfolderBase]: For 518819/518821 co-relation queries the response was YES. [2024-06-28 03:24:47,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102671 conditions, 15355 events. 10454/15355 cut-off events. For 518819/518821 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 93174 event pairs, 4058 based on Foata normal form. 2/15201 useless extension candidates. Maximal degree in co-relation 102616. Up to 14339 conditions per place. [2024-06-28 03:24:47,083 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 204 selfloop transitions, 18 changer transitions 0/232 dead transitions. [2024-06-28 03:24:47,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 232 transitions, 2732 flow [2024-06-28 03:24:47,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:24:47,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:24:47,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-28 03:24:47,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49326145552560646 [2024-06-28 03:24:47,084 INFO L175 Difference]: Start difference. First operand has 146 places, 200 transitions, 2108 flow. Second operand 7 states and 183 transitions. [2024-06-28 03:24:47,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 232 transitions, 2732 flow [2024-06-28 03:24:47,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 232 transitions, 2459 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-28 03:24:47,658 INFO L231 Difference]: Finished difference. Result has 146 places, 204 transitions, 1980 flow [2024-06-28 03:24:47,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1835, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1980, PETRI_PLACES=146, PETRI_TRANSITIONS=204} [2024-06-28 03:24:47,659 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 90 predicate places. [2024-06-28 03:24:47,660 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 204 transitions, 1980 flow [2024-06-28 03:24:47,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:47,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:47,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:47,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:24:47,660 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:24:47,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:47,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1539640256, now seen corresponding path program 1 times [2024-06-28 03:24:47,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:47,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277739239] [2024-06-28 03:24:47,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:47,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:49,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:49,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:49,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277739239] [2024-06-28 03:24:49,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277739239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:49,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:49,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:24:49,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369340599] [2024-06-28 03:24:49,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:49,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:24:49,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:49,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:24:49,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:24:49,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-28 03:24:49,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 204 transitions, 1980 flow. Second operand has 10 states, 10 states have (on average 16.5) internal successors, (165), 10 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:49,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:49,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-28 03:24:49,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:51,864 INFO L124 PetriNetUnfolderBase]: 10402/15267 cut-off events. [2024-06-28 03:24:51,865 INFO L125 PetriNetUnfolderBase]: For 589775/589792 co-relation queries the response was YES. [2024-06-28 03:24:51,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104447 conditions, 15267 events. 10402/15267 cut-off events. For 589775/589792 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 92746 event pairs, 4278 based on Foata normal form. 19/15091 useless extension candidates. Maximal degree in co-relation 104391. Up to 14221 conditions per place. [2024-06-28 03:24:51,993 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 193 selfloop transitions, 21 changer transitions 0/234 dead transitions. [2024-06-28 03:24:51,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 234 transitions, 2576 flow [2024-06-28 03:24:51,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:24:51,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:24:52,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 03:24:52,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716981132075472 [2024-06-28 03:24:52,004 INFO L175 Difference]: Start difference. First operand has 146 places, 204 transitions, 1980 flow. Second operand 8 states and 200 transitions. [2024-06-28 03:24:52,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 234 transitions, 2576 flow [2024-06-28 03:24:52,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 234 transitions, 2461 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-28 03:24:52,328 INFO L231 Difference]: Finished difference. Result has 149 places, 207 transitions, 2007 flow [2024-06-28 03:24:52,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1865, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2007, PETRI_PLACES=149, PETRI_TRANSITIONS=207} [2024-06-28 03:24:52,329 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 93 predicate places. [2024-06-28 03:24:52,329 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 207 transitions, 2007 flow [2024-06-28 03:24:52,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.5) internal successors, (165), 10 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:52,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:52,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:52,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:24:52,330 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:24:52,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:52,330 INFO L85 PathProgramCache]: Analyzing trace with hash -2123964980, now seen corresponding path program 1 times [2024-06-28 03:24:52,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:52,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643737060] [2024-06-28 03:24:52,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:52,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:52,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:52,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:52,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643737060] [2024-06-28 03:24:52,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643737060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:52,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:52,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:24:52,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323555485] [2024-06-28 03:24:52,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:52,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:24:52,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:52,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:24:52,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:24:53,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-28 03:24:53,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 207 transitions, 2007 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:53,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:53,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-28 03:24:53,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:55,645 INFO L124 PetriNetUnfolderBase]: 10430/15465 cut-off events. [2024-06-28 03:24:55,645 INFO L125 PetriNetUnfolderBase]: For 612988/613005 co-relation queries the response was YES. [2024-06-28 03:24:55,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106916 conditions, 15465 events. 10430/15465 cut-off events. For 612988/613005 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 94930 event pairs, 4287 based on Foata normal form. 16/15317 useless extension candidates. Maximal degree in co-relation 106859. Up to 14258 conditions per place. [2024-06-28 03:24:55,785 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 192 selfloop transitions, 10 changer transitions 0/222 dead transitions. [2024-06-28 03:24:55,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 222 transitions, 2523 flow [2024-06-28 03:24:55,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:24:55,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:24:55,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-06-28 03:24:55,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47924528301886793 [2024-06-28 03:24:55,787 INFO L175 Difference]: Start difference. First operand has 149 places, 207 transitions, 2007 flow. Second operand 5 states and 127 transitions. [2024-06-28 03:24:55,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 222 transitions, 2523 flow [2024-06-28 03:24:56,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 222 transitions, 2405 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-28 03:24:56,116 INFO L231 Difference]: Finished difference. Result has 148 places, 211 transitions, 2002 flow [2024-06-28 03:24:56,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1889, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2002, PETRI_PLACES=148, PETRI_TRANSITIONS=211} [2024-06-28 03:24:56,116 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 92 predicate places. [2024-06-28 03:24:56,116 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 211 transitions, 2002 flow [2024-06-28 03:24:56,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:56,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:56,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:56,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:24:56,117 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:24:56,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:56,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1929584593, now seen corresponding path program 1 times [2024-06-28 03:24:56,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:56,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959195383] [2024-06-28 03:24:56,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:56,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:57,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:57,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:57,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959195383] [2024-06-28 03:24:57,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959195383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:57,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:57,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:24:57,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735593309] [2024-06-28 03:24:57,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:57,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:24:57,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:57,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:24:57,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:24:57,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 03:24:57,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 211 transitions, 2002 flow. Second operand has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:57,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:57,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 03:24:57,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:59,922 INFO L124 PetriNetUnfolderBase]: 11843/16983 cut-off events. [2024-06-28 03:24:59,923 INFO L125 PetriNetUnfolderBase]: For 721569/721583 co-relation queries the response was YES. [2024-06-28 03:25:00,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122867 conditions, 16983 events. 11843/16983 cut-off events. For 721569/721583 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 99685 event pairs, 4833 based on Foata normal form. 16/16984 useless extension candidates. Maximal degree in co-relation 122809. Up to 16119 conditions per place. [2024-06-28 03:25:00,115 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 211 selfloop transitions, 29 changer transitions 0/249 dead transitions. [2024-06-28 03:25:00,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 249 transitions, 2692 flow [2024-06-28 03:25:00,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:25:00,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:25:00,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-28 03:25:00,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49326145552560646 [2024-06-28 03:25:00,117 INFO L175 Difference]: Start difference. First operand has 148 places, 211 transitions, 2002 flow. Second operand 7 states and 183 transitions. [2024-06-28 03:25:00,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 249 transitions, 2692 flow [2024-06-28 03:25:00,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 249 transitions, 2607 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-06-28 03:25:00,525 INFO L231 Difference]: Finished difference. Result has 152 places, 215 transitions, 2086 flow [2024-06-28 03:25:00,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1917, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2086, PETRI_PLACES=152, PETRI_TRANSITIONS=215} [2024-06-28 03:25:00,525 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 96 predicate places. [2024-06-28 03:25:00,525 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 215 transitions, 2086 flow [2024-06-28 03:25:00,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:00,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:00,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:00,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:25:00,526 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:25:00,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:00,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1599042925, now seen corresponding path program 2 times [2024-06-28 03:25:00,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:00,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654865919] [2024-06-28 03:25:00,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:00,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:00,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:01,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:01,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:01,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654865919] [2024-06-28 03:25:01,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654865919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:01,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:01,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:25:01,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689583504] [2024-06-28 03:25:01,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:01,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:25:01,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:01,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:25:01,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:25:01,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 03:25:01,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 215 transitions, 2086 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:01,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:01,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 03:25:01,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand