./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix043.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/mix043.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/mix043.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix043.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 03:30:00,820 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:30:00,861 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:30:00,864 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:30:00,864 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:30:00,876 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:30:00,876 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:30:00,877 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:30:00,877 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:30:00,877 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:30:00,877 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:30:00,878 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:30:00,878 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:30:00,878 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:30:00,879 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:30:00,879 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:30:00,879 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:30:00,879 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:30:00,880 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:30:00,880 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:30:00,880 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:30:00,880 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:30:00,881 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:30:00,881 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:30:00,881 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:30:00,881 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:30:00,882 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:30:00,882 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:30:00,882 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:30:00,882 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:30:00,882 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:30:00,883 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:30:00,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:30:00,883 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:30:00,883 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:30:00,883 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:30:00,884 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:30:00,884 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:30:00,884 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:30:00,884 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:30:00,884 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:30:00,885 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:30:00,885 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:30:00,885 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:30:01,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:30:01,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:30:01,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:30:01,050 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:30:01,050 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:30:01,051 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix043.opt.i [2024-06-28 03:30:02,012 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:30:02,232 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:30:02,234 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix043.opt.i [2024-06-28 03:30:02,249 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c10fb39c/42d6e351b37c4783819860a370afffb4/FLAGabac319d2 [2024-06-28 03:30:02,576 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c10fb39c/42d6e351b37c4783819860a370afffb4 [2024-06-28 03:30:02,578 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:30:02,579 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:30:02,579 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix043.opt.yml/witness.yml [2024-06-28 03:30:02,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:30:02,722 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:30:02,722 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:30:02,722 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:30:02,726 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:30:02,726 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:30:02" (1/2) ... [2024-06-28 03:30:02,727 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a4e52d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:30:02, skipping insertion in model container [2024-06-28 03:30:02,727 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:30:02" (1/2) ... [2024-06-28 03:30:02,728 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@46280111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:30:02, skipping insertion in model container [2024-06-28 03:30:02,728 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:30:02" (2/2) ... [2024-06-28 03:30:02,728 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a4e52d3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:30:02, skipping insertion in model container [2024-06-28 03:30:02,729 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:30:02" (2/2) ... [2024-06-28 03:30:02,729 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:30:02,818 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:30:02,819 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] (((((((((((((((((((((((! multithreaded || (x == 0 || x == 1)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 2))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (((((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 2)) && (z$w_buff1 == 0 || z$w_buff1 == 2)) && ((z == 0 || z == 1) || z == 2)) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 2))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0) [2024-06-28 03:30:02,819 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] (((((((((((((((((((((((! multithreaded || (x == 0 || x == 1)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 2))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (((((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_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)) && (z$w_buff0 == 0 || z$w_buff0 == 2)) && (z$w_buff1 == 0 || z$w_buff1 == 2)) && ((z == 0 || z == 1) || z == 2)) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 2))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0) [2024-06-28 03:30:02,819 INFO L97 edCorrectnessWitness]: Location invariant before [L855-L855] (((((((((((((((((((((((! multithreaded || (x == 0 || x == 1)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 2))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (((((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 2)) && (z$w_buff1 == 0 || z$w_buff1 == 2)) && ((z == 0 || z == 1) || z == 2)) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 2))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0) [2024-06-28 03:30:02,820 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] (((((((((((((((((((((((! multithreaded || (x == 0 || x == 1)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 2))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (((((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_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)) && (z$w_buff0 == 0 || z$w_buff0 == 2)) && (z$w_buff1 == 0 || z$w_buff1 == 2)) && ((z == 0 || z == 1) || z == 2)) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 2))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0) [2024-06-28 03:30:02,820 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:30:02,820 INFO L106 edCorrectnessWitness]: ghost_update [L849-L849] multithreaded = 1; [2024-06-28 03:30:02,854 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:30:03,111 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:30:03,132 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 03:30:03,271 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:30:03,308 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:30:03,309 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:30:03 WrapperNode [2024-06-28 03:30:03,309 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:30:03,310 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:30:03,310 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:30:03,310 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:30:03,317 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 03:30:03" (1/1) ... [2024-06-28 03:30:03,337 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 03:30:03" (1/1) ... [2024-06-28 03:30:03,385 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 165 [2024-06-28 03:30:03,385 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:30:03,386 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:30:03,386 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:30:03,386 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:30:03,395 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 03:30:03" (1/1) ... [2024-06-28 03:30:03,395 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 03:30:03" (1/1) ... [2024-06-28 03:30:03,399 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 03:30:03" (1/1) ... [2024-06-28 03:30:03,415 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 03:30:03,415 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 03:30:03" (1/1) ... [2024-06-28 03:30:03,415 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 03:30:03" (1/1) ... [2024-06-28 03:30:03,424 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 03:30:03" (1/1) ... [2024-06-28 03:30:03,431 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 03:30:03" (1/1) ... [2024-06-28 03:30:03,433 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 03:30:03" (1/1) ... [2024-06-28 03:30:03,434 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 03:30:03" (1/1) ... [2024-06-28 03:30:03,437 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:30:03,437 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:30:03,438 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:30:03,438 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:30:03,438 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 03:30:03" (1/1) ... [2024-06-28 03:30:03,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:30:03,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:30:03,479 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 03:30:03,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:30:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:30:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:30:03,512 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:30:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:30:03,512 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:30:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:30:03,513 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:30:03,513 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 03:30:03,513 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 03:30:03,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:30:03,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:30:03,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:30:03,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:30:03,515 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 03:30:03,500 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 03:30:03,627 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:30:03,630 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:30:03,972 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:30:03,972 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:30:04,104 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:30:04,105 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:30:04,105 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:30:04 BoogieIcfgContainer [2024-06-28 03:30:04,105 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:30:04,107 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:30:04,107 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:30:04,109 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:30:04,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:30:02" (1/4) ... [2024-06-28 03:30:04,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@695c9fbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:30:04, skipping insertion in model container [2024-06-28 03:30:04,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:30:02" (2/4) ... [2024-06-28 03:30:04,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@695c9fbc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:30:04, skipping insertion in model container [2024-06-28 03:30:04,110 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 03:30:03" (3/4) ... [2024-06-28 03:30:04,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@695c9fbc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:30:04, skipping insertion in model container [2024-06-28 03:30:04,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:30:04" (4/4) ... [2024-06-28 03:30:04,112 INFO L112 eAbstractionObserver]: Analyzing ICFG mix043.opt.i [2024-06-28 03:30:04,125 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:30:04,125 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 03:30:04,125 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:30:04,163 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:30:04,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 53 transitions, 122 flow [2024-06-28 03:30:04,207 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2024-06-28 03:30:04,207 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:30:04,208 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 87 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 03:30:04,209 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 53 transitions, 122 flow [2024-06-28 03:30:04,211 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 43 transitions, 98 flow [2024-06-28 03:30:04,216 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:30:04,221 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;@6b674c6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:30:04,221 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-28 03:30:04,224 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:30:04,224 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:30:04,224 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:30:04,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:04,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:30:04,225 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 03:30:04,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:04,274 INFO L85 PathProgramCache]: Analyzing trace with hash 392448364, now seen corresponding path program 1 times [2024-06-28 03:30:04,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:04,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483568009] [2024-06-28 03:30:04,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:04,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:05,224 INFO 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 03:30:05,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:05,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483568009] [2024-06-28 03:30:05,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483568009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:05,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:05,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:30:05,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392630921] [2024-06-28 03:30:05,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:05,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:30:05,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:05,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:30:05,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:30:05,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-06-28 03:30:05,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:05,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:05,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-06-28 03:30:05,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:06,187 INFO L124 PetriNetUnfolderBase]: 5891/8475 cut-off events. [2024-06-28 03:30:06,187 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2024-06-28 03:30:06,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16795 conditions, 8475 events. 5891/8475 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 48970 event pairs, 4304 based on Foata normal form. 1/8210 useless extension candidates. Maximal degree in co-relation 16782. Up to 8069 conditions per place. [2024-06-28 03:30:06,270 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 41 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-28 03:30:06,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 227 flow [2024-06-28 03:30:06,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:30:06,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:30:06,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-06-28 03:30:06,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6352201257861635 [2024-06-28 03:30:06,282 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 98 flow. Second operand 3 states and 101 transitions. [2024-06-28 03:30:06,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 227 flow [2024-06-28 03:30:06,285 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 03:30:06,290 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 133 flow [2024-06-28 03:30:06,292 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 03:30:06,296 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-06-28 03:30:06,296 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 133 flow [2024-06-28 03:30:06,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:06,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:06,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:06,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:30:06,298 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 03:30:06,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:06,299 INFO L85 PathProgramCache]: Analyzing trace with hash -813815215, now seen corresponding path program 1 times [2024-06-28 03:30:06,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:06,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094101830] [2024-06-28 03:30:06,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:06,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:06,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:06,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:06,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094101830] [2024-06-28 03:30:06,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094101830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:06,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:06,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:30:06,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023762017] [2024-06-28 03:30:06,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:06,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:30:06,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:06,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:30:06,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:30:06,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-06-28 03:30:06,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:06,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:06,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-06-28 03:30:06,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:07,664 INFO L124 PetriNetUnfolderBase]: 6745/9473 cut-off events. [2024-06-28 03:30:07,665 INFO L125 PetriNetUnfolderBase]: For 1966/1966 co-relation queries the response was YES. [2024-06-28 03:30:07,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21644 conditions, 9473 events. 6745/9473 cut-off events. For 1966/1966 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 53659 event pairs, 4203 based on Foata normal form. 4/9354 useless extension candidates. Maximal degree in co-relation 21632. Up to 9186 conditions per place. [2024-06-28 03:30:07,714 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 52 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-06-28 03:30:07,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 71 transitions, 321 flow [2024-06-28 03:30:07,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:30:07,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:30:07,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-06-28 03:30:07,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6084905660377359 [2024-06-28 03:30:07,716 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 133 flow. Second operand 4 states and 129 transitions. [2024-06-28 03:30:07,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 71 transitions, 321 flow [2024-06-28 03:30:07,720 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 03:30:07,721 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 181 flow [2024-06-28 03:30:07,721 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 03:30:07,722 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-06-28 03:30:07,722 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 181 flow [2024-06-28 03:30:07,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:07,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:07,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:07,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:30:07,723 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 03:30:07,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:07,724 INFO L85 PathProgramCache]: Analyzing trace with hash 723060586, now seen corresponding path program 1 times [2024-06-28 03:30:07,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:07,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938844506] [2024-06-28 03:30:07,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:07,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:08,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:08,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:08,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938844506] [2024-06-28 03:30:08,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938844506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:08,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:08,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:30:08,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227501135] [2024-06-28 03:30:08,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:08,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:30:08,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:08,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:30:08,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:30:08,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-28 03:30:08,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 181 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:08,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:08,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-28 03:30:08,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:09,720 INFO L124 PetriNetUnfolderBase]: 8565/11942 cut-off events. [2024-06-28 03:30:09,720 INFO L125 PetriNetUnfolderBase]: For 6727/6727 co-relation queries the response was YES. [2024-06-28 03:30:09,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30301 conditions, 11942 events. 8565/11942 cut-off events. For 6727/6727 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 66579 event pairs, 4084 based on Foata normal form. 8/11794 useless extension candidates. Maximal degree in co-relation 30287. Up to 11551 conditions per place. [2024-06-28 03:30:09,771 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 70 selfloop transitions, 16 changer transitions 0/95 dead transitions. [2024-06-28 03:30:09,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 95 transitions, 486 flow [2024-06-28 03:30:09,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:30:09,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:30:09,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-06-28 03:30:09,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5660377358490566 [2024-06-28 03:30:09,773 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 181 flow. Second operand 6 states and 180 transitions. [2024-06-28 03:30:09,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 95 transitions, 486 flow [2024-06-28 03:30:09,775 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 03:30:09,777 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 243 flow [2024-06-28 03:30:09,777 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 03:30:09,778 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2024-06-28 03:30:09,778 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 243 flow [2024-06-28 03:30:09,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:09,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:09,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:09,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:30:09,779 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 03:30:09,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:09,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1268950351, now seen corresponding path program 1 times [2024-06-28 03:30:09,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:09,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194942291] [2024-06-28 03:30:09,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:09,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:10,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:10,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:10,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194942291] [2024-06-28 03:30:10,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194942291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:10,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:10,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:30:10,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314608349] [2024-06-28 03:30:10,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:10,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:30:10,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:10,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:30:10,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:30:10,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 03:30:10,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 243 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:10,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:10,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 03:30:10,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:11,768 INFO L124 PetriNetUnfolderBase]: 7458/10672 cut-off events. [2024-06-28 03:30:11,768 INFO L125 PetriNetUnfolderBase]: For 11172/11172 co-relation queries the response was YES. [2024-06-28 03:30:11,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29690 conditions, 10672 events. 7458/10672 cut-off events. For 11172/11172 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 61316 event pairs, 3877 based on Foata normal form. 3/10502 useless extension candidates. Maximal degree in co-relation 29673. Up to 10150 conditions per place. [2024-06-28 03:30:11,824 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 59 selfloop transitions, 10 changer transitions 0/78 dead transitions. [2024-06-28 03:30:11,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 78 transitions, 447 flow [2024-06-28 03:30:11,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:30:11,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:30:11,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-06-28 03:30:11,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49433962264150944 [2024-06-28 03:30:11,828 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 243 flow. Second operand 5 states and 131 transitions. [2024-06-28 03:30:11,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 78 transitions, 447 flow [2024-06-28 03:30:11,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 78 transitions, 409 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 03:30:11,832 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 266 flow [2024-06-28 03:30:11,832 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 03:30:11,834 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 8 predicate places. [2024-06-28 03:30:11,834 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 266 flow [2024-06-28 03:30:11,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:11,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:11,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:11,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:30:11,835 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 03:30:11,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:11,835 INFO L85 PathProgramCache]: Analyzing trace with hash 431108034, now seen corresponding path program 1 times [2024-06-28 03:30:11,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:11,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537458597] [2024-06-28 03:30:11,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:11,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:11,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:12,729 INFO 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 03:30:12,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:12,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537458597] [2024-06-28 03:30:12,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537458597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:12,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:12,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:30:12,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407642898] [2024-06-28 03:30:12,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:12,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:30:12,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:12,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:30:12,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:30:12,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:30:12,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 266 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:12,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:12,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:30:12,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:14,081 INFO L124 PetriNetUnfolderBase]: 8578/11948 cut-off events. [2024-06-28 03:30:14,082 INFO L125 PetriNetUnfolderBase]: For 19663/19685 co-relation queries the response was YES. [2024-06-28 03:30:14,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36571 conditions, 11948 events. 8578/11948 cut-off events. For 19663/19685 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 66386 event pairs, 4353 based on Foata normal form. 5/11800 useless extension candidates. Maximal degree in co-relation 36552. Up to 11584 conditions per place. [2024-06-28 03:30:14,160 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 70 selfloop transitions, 21 changer transitions 0/99 dead transitions. [2024-06-28 03:30:14,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 99 transitions, 604 flow [2024-06-28 03:30:14,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:30:14,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:30:14,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-06-28 03:30:14,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 03:30:14,162 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 266 flow. Second operand 6 states and 159 transitions. [2024-06-28 03:30:14,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 99 transitions, 604 flow [2024-06-28 03:30:14,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 99 transitions, 575 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 03:30:14,167 INFO L231 Difference]: Finished difference. Result has 67 places, 69 transitions, 354 flow [2024-06-28 03:30:14,167 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 03:30:14,167 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 11 predicate places. [2024-06-28 03:30:14,168 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 69 transitions, 354 flow [2024-06-28 03:30:14,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:14,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:14,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:14,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:30:14,168 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 03:30:14,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:14,169 INFO L85 PathProgramCache]: Analyzing trace with hash 550170016, now seen corresponding path program 2 times [2024-06-28 03:30:14,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:14,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204160677] [2024-06-28 03:30:14,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:14,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:14,971 INFO 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 03:30:14,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:14,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204160677] [2024-06-28 03:30:14,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204160677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:14,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:14,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:30:14,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289523377] [2024-06-28 03:30:14,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:14,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:30:14,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:14,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:30:14,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:30:15,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:30:15,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 69 transitions, 354 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:15,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:15,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:30:15,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:16,151 INFO L124 PetriNetUnfolderBase]: 8569/11951 cut-off events. [2024-06-28 03:30:16,152 INFO L125 PetriNetUnfolderBase]: For 28915/28956 co-relation queries the response was YES. [2024-06-28 03:30:16,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39690 conditions, 11951 events. 8569/11951 cut-off events. For 28915/28956 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 66595 event pairs, 4356 based on Foata normal form. 25/11825 useless extension candidates. Maximal degree in co-relation 39670. Up to 11575 conditions per place. [2024-06-28 03:30:16,220 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 64 selfloop transitions, 21 changer transitions 0/93 dead transitions. [2024-06-28 03:30:16,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 93 transitions, 586 flow [2024-06-28 03:30:16,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:30:16,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:30:16,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-28 03:30:16,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4811320754716981 [2024-06-28 03:30:16,222 INFO L175 Difference]: Start difference. First operand has 67 places, 69 transitions, 354 flow. Second operand 6 states and 153 transitions. [2024-06-28 03:30:16,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 93 transitions, 586 flow [2024-06-28 03:30:16,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 93 transitions, 540 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-28 03:30:16,236 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 361 flow [2024-06-28 03:30:16,237 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 03:30:16,237 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 15 predicate places. [2024-06-28 03:30:16,237 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 361 flow [2024-06-28 03:30:16,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:16,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:16,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:16,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:30:16,238 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 03:30:16,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:16,238 INFO L85 PathProgramCache]: Analyzing trace with hash -582831454, now seen corresponding path program 1 times [2024-06-28 03:30:16,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:16,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449294609] [2024-06-28 03:30:16,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:16,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:17,068 INFO 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 03:30:17,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:17,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449294609] [2024-06-28 03:30:17,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449294609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:17,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:17,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:30:17,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486821687] [2024-06-28 03:30:17,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:17,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:30:17,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:17,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:30:17,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:30:17,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:30:17,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 361 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:17,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:17,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:30:17,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:18,376 INFO L124 PetriNetUnfolderBase]: 8660/12105 cut-off events. [2024-06-28 03:30:18,376 INFO L125 PetriNetUnfolderBase]: For 33335/33373 co-relation queries the response was YES. [2024-06-28 03:30:18,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40640 conditions, 12105 events. 8660/12105 cut-off events. For 33335/33373 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 67503 event pairs, 4346 based on Foata normal form. 7/11962 useless extension candidates. Maximal degree in co-relation 40618. Up to 11677 conditions per place. [2024-06-28 03:30:18,429 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 88 selfloop transitions, 32 changer transitions 0/128 dead transitions. [2024-06-28 03:30:18,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 128 transitions, 822 flow [2024-06-28 03:30:18,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:30:18,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:30:18,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-28 03:30:18,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4858490566037736 [2024-06-28 03:30:18,430 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 361 flow. Second operand 8 states and 206 transitions. [2024-06-28 03:30:18,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 128 transitions, 822 flow [2024-06-28 03:30:18,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 128 transitions, 748 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:30:18,443 INFO L231 Difference]: Finished difference. Result has 75 places, 88 transitions, 513 flow [2024-06-28 03:30:18,443 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 03:30:18,445 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 19 predicate places. [2024-06-28 03:30:18,445 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 88 transitions, 513 flow [2024-06-28 03:30:18,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:18,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:18,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:18,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:30:18,445 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 03:30:18,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:18,446 INFO L85 PathProgramCache]: Analyzing trace with hash 479328142, now seen corresponding path program 2 times [2024-06-28 03:30:18,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:18,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911690713] [2024-06-28 03:30:18,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:18,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:18,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:19,372 INFO 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 03:30:19,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:19,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911690713] [2024-06-28 03:30:19,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911690713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:19,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:19,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:30:19,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746798088] [2024-06-28 03:30:19,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:19,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:30:19,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:19,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:30:19,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:30:19,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:30:19,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 88 transitions, 513 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:19,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:19,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:30:19,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:20,808 INFO L124 PetriNetUnfolderBase]: 8682/12143 cut-off events. [2024-06-28 03:30:20,809 INFO L125 PetriNetUnfolderBase]: For 45247/45311 co-relation queries the response was YES. [2024-06-28 03:30:20,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44136 conditions, 12143 events. 8682/12143 cut-off events. For 45247/45311 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 67808 event pairs, 4266 based on Foata normal form. 11/12007 useless extension candidates. Maximal degree in co-relation 44112. Up to 11684 conditions per place. [2024-06-28 03:30:20,912 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 88 selfloop transitions, 34 changer transitions 0/130 dead transitions. [2024-06-28 03:30:20,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 130 transitions, 927 flow [2024-06-28 03:30:20,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:30:20,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:30:20,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-28 03:30:20,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48787061994609165 [2024-06-28 03:30:20,914 INFO L175 Difference]: Start difference. First operand has 75 places, 88 transitions, 513 flow. Second operand 7 states and 181 transitions. [2024-06-28 03:30:20,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 130 transitions, 927 flow [2024-06-28 03:30:20,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 130 transitions, 869 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-28 03:30:20,937 INFO L231 Difference]: Finished difference. Result has 79 places, 92 transitions, 590 flow [2024-06-28 03:30:20,937 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 03:30:20,939 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 23 predicate places. [2024-06-28 03:30:20,940 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 92 transitions, 590 flow [2024-06-28 03:30:20,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:20,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:20,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:20,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:30:20,941 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 03:30:20,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:20,941 INFO L85 PathProgramCache]: Analyzing trace with hash -200681706, now seen corresponding path program 3 times [2024-06-28 03:30:20,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:20,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182312157] [2024-06-28 03:30:20,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:20,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:21,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:21,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:21,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182312157] [2024-06-28 03:30:21,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182312157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:21,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:21,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:30:21,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692301852] [2024-06-28 03:30:21,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:21,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:30:21,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:21,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:30:21,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:30:21,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:30:21,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 92 transitions, 590 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:21,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:21,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:30:21,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:23,436 INFO L124 PetriNetUnfolderBase]: 8704/12166 cut-off events. [2024-06-28 03:30:23,436 INFO L125 PetriNetUnfolderBase]: For 59292/59350 co-relation queries the response was YES. [2024-06-28 03:30:23,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47452 conditions, 12166 events. 8704/12166 cut-off events. For 59292/59350 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 67835 event pairs, 4192 based on Foata normal form. 21/12037 useless extension candidates. Maximal degree in co-relation 47427. Up to 11628 conditions per place. [2024-06-28 03:30:23,523 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 78 selfloop transitions, 50 changer transitions 0/136 dead transitions. [2024-06-28 03:30:23,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 136 transitions, 1104 flow [2024-06-28 03:30:23,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:30:23,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:30:23,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-06-28 03:30:23,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49865229110512127 [2024-06-28 03:30:23,524 INFO L175 Difference]: Start difference. First operand has 79 places, 92 transitions, 590 flow. Second operand 7 states and 185 transitions. [2024-06-28 03:30:23,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 136 transitions, 1104 flow [2024-06-28 03:30:23,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 136 transitions, 985 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-28 03:30:23,567 INFO L231 Difference]: Finished difference. Result has 81 places, 100 transitions, 696 flow [2024-06-28 03:30:23,568 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 03:30:23,568 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 25 predicate places. [2024-06-28 03:30:23,568 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 100 transitions, 696 flow [2024-06-28 03:30:23,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:23,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:23,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:23,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:30:23,569 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 03:30:23,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:23,570 INFO L85 PathProgramCache]: Analyzing trace with hash -146047262, now seen corresponding path program 4 times [2024-06-28 03:30:23,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:23,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870395348] [2024-06-28 03:30:23,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:23,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:24,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:24,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:24,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870395348] [2024-06-28 03:30:24,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870395348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:24,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:24,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:30:24,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480600947] [2024-06-28 03:30:24,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:24,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:30:24,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:24,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:30:24,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:30:24,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:30:24,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 100 transitions, 696 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:24,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:24,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:30:24,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:26,178 INFO L124 PetriNetUnfolderBase]: 8695/12167 cut-off events. [2024-06-28 03:30:26,178 INFO L125 PetriNetUnfolderBase]: For 60413/60471 co-relation queries the response was YES. [2024-06-28 03:30:26,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47397 conditions, 12167 events. 8695/12167 cut-off events. For 60413/60471 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 67925 event pairs, 4199 based on Foata normal form. 19/12033 useless extension candidates. Maximal degree in co-relation 47371. Up to 11619 conditions per place. [2024-06-28 03:30:26,237 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 73 selfloop transitions, 50 changer transitions 0/131 dead transitions. [2024-06-28 03:30:26,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 131 transitions, 1040 flow [2024-06-28 03:30:26,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:30:26,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:30:26,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-28 03:30:26,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48247978436657685 [2024-06-28 03:30:26,241 INFO L175 Difference]: Start difference. First operand has 81 places, 100 transitions, 696 flow. Second operand 7 states and 179 transitions. [2024-06-28 03:30:26,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 131 transitions, 1040 flow [2024-06-28 03:30:26,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 131 transitions, 957 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 03:30:26,276 INFO L231 Difference]: Finished difference. Result has 85 places, 100 transitions, 724 flow [2024-06-28 03:30:26,277 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 03:30:26,278 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 29 predicate places. [2024-06-28 03:30:26,278 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 100 transitions, 724 flow [2024-06-28 03:30:26,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:26,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:26,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:26,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:30:26,279 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 03:30:26,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:26,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1001107652, now seen corresponding path program 1 times [2024-06-28 03:30:26,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:26,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269970075] [2024-06-28 03:30:26,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:26,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:27,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:27,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:27,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269970075] [2024-06-28 03:30:27,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269970075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:27,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:27,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:30:27,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341636394] [2024-06-28 03:30:27,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:27,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:30:27,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:27,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:30:27,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:30:27,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:30:27,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 100 transitions, 724 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:27,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:27,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:30:27,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:28,696 INFO L124 PetriNetUnfolderBase]: 9687/13763 cut-off events. [2024-06-28 03:30:28,696 INFO L125 PetriNetUnfolderBase]: For 73341/73343 co-relation queries the response was YES. [2024-06-28 03:30:28,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53050 conditions, 13763 events. 9687/13763 cut-off events. For 73341/73343 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 77740 event pairs, 4608 based on Foata normal form. 6/13568 useless extension candidates. Maximal degree in co-relation 53022. Up to 13084 conditions per place. [2024-06-28 03:30:28,783 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 114 selfloop transitions, 17 changer transitions 0/139 dead transitions. [2024-06-28 03:30:28,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 139 transitions, 1151 flow [2024-06-28 03:30:28,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:30:28,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:30:28,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 03:30:28,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716981132075472 [2024-06-28 03:30:28,785 INFO L175 Difference]: Start difference. First operand has 85 places, 100 transitions, 724 flow. Second operand 7 states and 175 transitions. [2024-06-28 03:30:28,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 139 transitions, 1151 flow [2024-06-28 03:30:28,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 139 transitions, 1010 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 03:30:28,830 INFO L231 Difference]: Finished difference. Result has 87 places, 107 transitions, 705 flow [2024-06-28 03:30:28,830 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 03:30:28,831 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 31 predicate places. [2024-06-28 03:30:28,831 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 107 transitions, 705 flow [2024-06-28 03:30:28,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:28,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:28,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:28,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:30:28,832 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 03:30:28,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:28,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1581016307, now seen corresponding path program 1 times [2024-06-28 03:30:28,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:28,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436751692] [2024-06-28 03:30:28,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:28,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:29,496 INFO 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 03:30:29,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:29,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436751692] [2024-06-28 03:30:29,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436751692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:29,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:29,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:30:29,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728508793] [2024-06-28 03:30:29,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:29,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:30:29,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:29,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:30:29,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:30:29,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 03:30:29,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 107 transitions, 705 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:29,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:29,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 03:30:29,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:30,772 INFO L124 PetriNetUnfolderBase]: 9069/13218 cut-off events. [2024-06-28 03:30:30,772 INFO L125 PetriNetUnfolderBase]: For 83790/83807 co-relation queries the response was YES. [2024-06-28 03:30:30,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53995 conditions, 13218 events. 9069/13218 cut-off events. For 83790/83807 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 77943 event pairs, 4701 based on Foata normal form. 17/13066 useless extension candidates. Maximal degree in co-relation 53965. Up to 12368 conditions per place. [2024-06-28 03:30:30,865 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 102 selfloop transitions, 10 changer transitions 0/125 dead transitions. [2024-06-28 03:30:30,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 125 transitions, 1009 flow [2024-06-28 03:30:30,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:30:30,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:30:30,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-06-28 03:30:30,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47924528301886793 [2024-06-28 03:30:30,867 INFO L175 Difference]: Start difference. First operand has 87 places, 107 transitions, 705 flow. Second operand 5 states and 127 transitions. [2024-06-28 03:30:30,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 125 transitions, 1009 flow [2024-06-28 03:30:30,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 125 transitions, 949 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 03:30:30,920 INFO L231 Difference]: Finished difference. Result has 88 places, 111 transitions, 718 flow [2024-06-28 03:30:30,920 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 03:30:30,921 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 32 predicate places. [2024-06-28 03:30:30,921 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 111 transitions, 718 flow [2024-06-28 03:30:30,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:30,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:30,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:30,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:30:30,922 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:30:30,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:30,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1766863193, now seen corresponding path program 1 times [2024-06-28 03:30:30,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:30,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816165363] [2024-06-28 03:30:30,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:30,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:31,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:31,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:31,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816165363] [2024-06-28 03:30:31,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816165363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:31,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:31,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:30:31,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959191380] [2024-06-28 03:30:31,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:31,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:30:31,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:31,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:30:31,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:30:31,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 03:30:31,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 111 transitions, 718 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:31,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:31,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 03:30:31,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:33,038 INFO L124 PetriNetUnfolderBase]: 9082/13495 cut-off events. [2024-06-28 03:30:33,038 INFO L125 PetriNetUnfolderBase]: For 100325/100342 co-relation queries the response was YES. [2024-06-28 03:30:33,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57241 conditions, 13495 events. 9082/13495 cut-off events. For 100325/100342 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 82100 event pairs, 4665 based on Foata normal form. 19/13479 useless extension candidates. Maximal degree in co-relation 57210. Up to 12332 conditions per place. [2024-06-28 03:30:33,132 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 107 selfloop transitions, 14 changer transitions 0/134 dead transitions. [2024-06-28 03:30:33,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 134 transitions, 1060 flow [2024-06-28 03:30:33,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:30:33,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:30:33,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-28 03:30:33,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716981132075472 [2024-06-28 03:30:33,133 INFO L175 Difference]: Start difference. First operand has 88 places, 111 transitions, 718 flow. Second operand 6 states and 150 transitions. [2024-06-28 03:30:33,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 134 transitions, 1060 flow [2024-06-28 03:30:33,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 134 transitions, 1017 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 03:30:33,200 INFO L231 Difference]: Finished difference. Result has 91 places, 115 transitions, 762 flow [2024-06-28 03:30:33,200 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=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=762, PETRI_PLACES=91, PETRI_TRANSITIONS=115} [2024-06-28 03:30:33,200 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 35 predicate places. [2024-06-28 03:30:33,201 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 115 transitions, 762 flow [2024-06-28 03:30:33,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:33,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:33,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:33,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:30:33,201 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 03:30:33,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:33,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1228745313, now seen corresponding path program 1 times [2024-06-28 03:30:33,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:33,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599581251] [2024-06-28 03:30:33,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:33,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:34,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:34,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:34,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599581251] [2024-06-28 03:30:34,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599581251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:34,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:34,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:30:34,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142420072] [2024-06-28 03:30:34,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:34,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:30:34,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:34,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:30:34,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:30:34,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:30:34,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 115 transitions, 762 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:34,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:34,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:30:34,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:36,004 INFO L124 PetriNetUnfolderBase]: 11096/15609 cut-off events. [2024-06-28 03:30:36,005 INFO L125 PetriNetUnfolderBase]: For 148656/148712 co-relation queries the response was YES. [2024-06-28 03:30:36,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73223 conditions, 15609 events. 11096/15609 cut-off events. For 148656/148712 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 89524 event pairs, 4133 based on Foata normal form. 42/15586 useless extension candidates. Maximal degree in co-relation 73191. Up to 14569 conditions per place. [2024-06-28 03:30:36,126 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 131 selfloop transitions, 41 changer transitions 0/181 dead transitions. [2024-06-28 03:30:36,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 181 transitions, 1468 flow [2024-06-28 03:30:36,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:30:36,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:30:36,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-06-28 03:30:36,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947589098532495 [2024-06-28 03:30:36,129 INFO L175 Difference]: Start difference. First operand has 91 places, 115 transitions, 762 flow. Second operand 9 states and 236 transitions. [2024-06-28 03:30:36,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 181 transitions, 1468 flow [2024-06-28 03:30:36,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 181 transitions, 1411 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-28 03:30:36,198 INFO L231 Difference]: Finished difference. Result has 96 places, 119 transitions, 880 flow [2024-06-28 03:30:36,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=880, PETRI_PLACES=96, PETRI_TRANSITIONS=119} [2024-06-28 03:30:36,199 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 40 predicate places. [2024-06-28 03:30:36,199 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 119 transitions, 880 flow [2024-06-28 03:30:36,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:36,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:36,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:36,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:30:36,200 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 03:30:36,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:36,200 INFO L85 PathProgramCache]: Analyzing trace with hash 2097464451, now seen corresponding path program 2 times [2024-06-28 03:30:36,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:36,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510016568] [2024-06-28 03:30:36,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:36,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:37,242 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 03:30:37,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:37,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510016568] [2024-06-28 03:30:37,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510016568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:37,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:37,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:30:37,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997567853] [2024-06-28 03:30:37,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:37,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:30:37,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:37,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:30:37,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:30:37,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:30:37,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 119 transitions, 880 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:37,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:37,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:30:37,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:39,022 INFO L124 PetriNetUnfolderBase]: 11042/15531 cut-off events. [2024-06-28 03:30:39,022 INFO L125 PetriNetUnfolderBase]: For 168231/168287 co-relation queries the response was YES. [2024-06-28 03:30:39,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74845 conditions, 15531 events. 11042/15531 cut-off events. For 168231/168287 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 89063 event pairs, 4733 based on Foata normal form. 48/15514 useless extension candidates. Maximal degree in co-relation 74812. Up to 14719 conditions per place. [2024-06-28 03:30:39,136 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 123 selfloop transitions, 36 changer transitions 0/168 dead transitions. [2024-06-28 03:30:39,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 168 transitions, 1370 flow [2024-06-28 03:30:39,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:30:39,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:30:39,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-28 03:30:39,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4882075471698113 [2024-06-28 03:30:39,138 INFO L175 Difference]: Start difference. First operand has 96 places, 119 transitions, 880 flow. Second operand 8 states and 207 transitions. [2024-06-28 03:30:39,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 168 transitions, 1370 flow [2024-06-28 03:30:39,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 168 transitions, 1297 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 03:30:39,233 INFO L231 Difference]: Finished difference. Result has 99 places, 119 transitions, 891 flow [2024-06-28 03:30:39,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=891, PETRI_PLACES=99, PETRI_TRANSITIONS=119} [2024-06-28 03:30:39,233 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 43 predicate places. [2024-06-28 03:30:39,234 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 119 transitions, 891 flow [2024-06-28 03:30:39,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:39,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:39,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:39,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:30:39,234 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 03:30:39,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:39,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1188166255, now seen corresponding path program 3 times [2024-06-28 03:30:39,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:39,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250551389] [2024-06-28 03:30:39,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:39,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:40,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:40,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:40,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250551389] [2024-06-28 03:30:40,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250551389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:40,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:40,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:30:40,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399325805] [2024-06-28 03:30:40,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:40,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:30:40,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:40,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:30:40,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:30:40,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:30:40,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 119 transitions, 891 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:40,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:40,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:30:40,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:42,123 INFO L124 PetriNetUnfolderBase]: 11148/15702 cut-off events. [2024-06-28 03:30:42,124 INFO L125 PetriNetUnfolderBase]: For 185309/185359 co-relation queries the response was YES. [2024-06-28 03:30:42,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76879 conditions, 15702 events. 11148/15702 cut-off events. For 185309/185359 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 90375 event pairs, 4783 based on Foata normal form. 56/15688 useless extension candidates. Maximal degree in co-relation 76844. Up to 14792 conditions per place. [2024-06-28 03:30:42,239 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 101 selfloop transitions, 55 changer transitions 0/165 dead transitions. [2024-06-28 03:30:42,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 165 transitions, 1395 flow [2024-06-28 03:30:42,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:30:42,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:30:42,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-28 03:30:42,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49056603773584906 [2024-06-28 03:30:42,241 INFO L175 Difference]: Start difference. First operand has 99 places, 119 transitions, 891 flow. Second operand 8 states and 208 transitions. [2024-06-28 03:30:42,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 165 transitions, 1395 flow [2024-06-28 03:30:42,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 165 transitions, 1313 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 03:30:42,345 INFO L231 Difference]: Finished difference. Result has 100 places, 121 transitions, 977 flow [2024-06-28 03:30:42,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=977, PETRI_PLACES=100, PETRI_TRANSITIONS=121} [2024-06-28 03:30:42,345 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 44 predicate places. [2024-06-28 03:30:42,346 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 121 transitions, 977 flow [2024-06-28 03:30:42,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:42,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:42,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:42,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:30:42,346 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:30:42,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:42,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1188350953, now seen corresponding path program 1 times [2024-06-28 03:30:42,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:42,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936026898] [2024-06-28 03:30:42,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:42,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:43,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:43,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:43,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936026898] [2024-06-28 03:30:43,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936026898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:43,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:43,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:30:43,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34436488] [2024-06-28 03:30:43,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:43,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:30:43,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:43,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:30:43,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:30:43,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:30:43,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 121 transitions, 977 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:43,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:43,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:30:43,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:45,136 INFO L124 PetriNetUnfolderBase]: 11553/16145 cut-off events. [2024-06-28 03:30:45,136 INFO L125 PetriNetUnfolderBase]: For 207235/207243 co-relation queries the response was YES. [2024-06-28 03:30:45,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79395 conditions, 16145 events. 11553/16145 cut-off events. For 207235/207243 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 89731 event pairs, 5144 based on Foata normal form. 14/16067 useless extension candidates. Maximal degree in co-relation 79359. Up to 15529 conditions per place. [2024-06-28 03:30:45,257 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 131 selfloop transitions, 35 changer transitions 0/173 dead transitions. [2024-06-28 03:30:45,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 173 transitions, 1540 flow [2024-06-28 03:30:45,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:30:45,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:30:45,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 03:30:45,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4693396226415094 [2024-06-28 03:30:45,259 INFO L175 Difference]: Start difference. First operand has 100 places, 121 transitions, 977 flow. Second operand 8 states and 199 transitions. [2024-06-28 03:30:45,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 173 transitions, 1540 flow [2024-06-28 03:30:45,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 173 transitions, 1408 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 03:30:45,399 INFO L231 Difference]: Finished difference. Result has 103 places, 128 transitions, 1020 flow [2024-06-28 03:30:45,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=851, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1020, PETRI_PLACES=103, PETRI_TRANSITIONS=128} [2024-06-28 03:30:45,400 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 47 predicate places. [2024-06-28 03:30:45,400 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 128 transitions, 1020 flow [2024-06-28 03:30:45,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:45,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:45,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:45,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:30:45,400 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:30:45,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:45,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1050376236, now seen corresponding path program 1 times [2024-06-28 03:30:45,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:45,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107334859] [2024-06-28 03:30:45,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:45,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:46,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:46,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:46,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107334859] [2024-06-28 03:30:46,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107334859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:46,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:46,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:30:46,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754709500] [2024-06-28 03:30:46,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:46,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:30:46,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:46,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:30:46,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:30:46,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:30:46,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 128 transitions, 1020 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:46,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:46,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:30:46,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:47,740 INFO L124 PetriNetUnfolderBase]: 10953/15556 cut-off events. [2024-06-28 03:30:47,740 INFO L125 PetriNetUnfolderBase]: For 230690/230714 co-relation queries the response was YES. [2024-06-28 03:30:47,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80033 conditions, 15556 events. 10953/15556 cut-off events. For 230690/230714 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 89484 event pairs, 5139 based on Foata normal form. 26/15462 useless extension candidates. Maximal degree in co-relation 79995. Up to 14751 conditions per place. [2024-06-28 03:30:47,854 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 112 selfloop transitions, 35 changer transitions 0/161 dead transitions. [2024-06-28 03:30:47,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 161 transitions, 1558 flow [2024-06-28 03:30:47,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:30:47,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:30:47,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-28 03:30:47,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48427672955974843 [2024-06-28 03:30:47,855 INFO L175 Difference]: Start difference. First operand has 103 places, 128 transitions, 1020 flow. Second operand 6 states and 154 transitions. [2024-06-28 03:30:47,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 161 transitions, 1558 flow [2024-06-28 03:30:47,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 161 transitions, 1446 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 03:30:47,970 INFO L231 Difference]: Finished difference. Result has 104 places, 136 transitions, 1103 flow [2024-06-28 03:30:47,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1103, PETRI_PLACES=104, PETRI_TRANSITIONS=136} [2024-06-28 03:30:47,971 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 48 predicate places. [2024-06-28 03:30:47,971 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 136 transitions, 1103 flow [2024-06-28 03:30:47,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:47,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:47,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:47,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:30:47,971 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 03:30:47,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:47,972 INFO L85 PathProgramCache]: Analyzing trace with hash 637830783, now seen corresponding path program 4 times [2024-06-28 03:30:47,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:47,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951137705] [2024-06-28 03:30:47,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:47,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:48,909 INFO 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 03:30:48,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:48,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951137705] [2024-06-28 03:30:48,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951137705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:48,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:48,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:30:48,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556080189] [2024-06-28 03:30:48,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:48,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:30:48,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:48,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:30:48,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:30:49,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:30:49,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 136 transitions, 1103 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:49,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:49,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:30:49,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:51,005 INFO L124 PetriNetUnfolderBase]: 11163/15796 cut-off events. [2024-06-28 03:30:51,006 INFO L125 PetriNetUnfolderBase]: For 265407/265457 co-relation queries the response was YES. [2024-06-28 03:30:51,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85364 conditions, 15796 events. 11163/15796 cut-off events. For 265407/265457 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 91188 event pairs, 4941 based on Foata normal form. 62/15771 useless extension candidates. Maximal degree in co-relation 85325. Up to 14824 conditions per place. [2024-06-28 03:30:51,148 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 113 selfloop transitions, 57 changer transitions 0/180 dead transitions. [2024-06-28 03:30:51,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 180 transitions, 1641 flow [2024-06-28 03:30:51,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:30:51,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:30:51,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 03:30:51,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4834905660377358 [2024-06-28 03:30:51,150 INFO L175 Difference]: Start difference. First operand has 104 places, 136 transitions, 1103 flow. Second operand 8 states and 205 transitions. [2024-06-28 03:30:51,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 180 transitions, 1641 flow [2024-06-28 03:30:51,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 180 transitions, 1591 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-06-28 03:30:51,302 INFO L231 Difference]: Finished difference. Result has 110 places, 138 transitions, 1235 flow [2024-06-28 03:30:51,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1235, PETRI_PLACES=110, PETRI_TRANSITIONS=138} [2024-06-28 03:30:51,302 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 54 predicate places. [2024-06-28 03:30:51,303 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 138 transitions, 1235 flow [2024-06-28 03:30:51,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:51,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:51,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:51,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:30:51,303 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 03:30:51,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:51,304 INFO L85 PathProgramCache]: Analyzing trace with hash 865916631, now seen corresponding path program 2 times [2024-06-28 03:30:51,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:51,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260556170] [2024-06-28 03:30:51,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:51,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:51,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:52,266 INFO 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 03:30:52,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:52,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260556170] [2024-06-28 03:30:52,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260556170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:52,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:52,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:30:52,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468892062] [2024-06-28 03:30:52,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:52,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:30:52,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:52,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:30:52,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:30:52,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:30:52,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 138 transitions, 1235 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:52,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:52,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:30:52,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:54,247 INFO L124 PetriNetUnfolderBase]: 11705/16342 cut-off events. [2024-06-28 03:30:54,247 INFO L125 PetriNetUnfolderBase]: For 289045/289062 co-relation queries the response was YES. [2024-06-28 03:30:54,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89646 conditions, 16342 events. 11705/16342 cut-off events. For 289045/289062 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 90569 event pairs, 5154 based on Foata normal form. 20/16329 useless extension candidates. Maximal degree in co-relation 89605. Up to 15744 conditions per place. [2024-06-28 03:30:54,378 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 141 selfloop transitions, 43 changer transitions 0/191 dead transitions. [2024-06-28 03:30:54,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 191 transitions, 1871 flow [2024-06-28 03:30:54,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:30:54,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:30:54,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 03:30:54,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45990566037735847 [2024-06-28 03:30:54,380 INFO L175 Difference]: Start difference. First operand has 110 places, 138 transitions, 1235 flow. Second operand 8 states and 195 transitions. [2024-06-28 03:30:54,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 191 transitions, 1871 flow [2024-06-28 03:30:54,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 191 transitions, 1719 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 03:30:54,563 INFO L231 Difference]: Finished difference. Result has 113 places, 149 transitions, 1329 flow [2024-06-28 03:30:54,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1097, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1329, PETRI_PLACES=113, PETRI_TRANSITIONS=149} [2024-06-28 03:30:54,563 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 57 predicate places. [2024-06-28 03:30:54,564 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 149 transitions, 1329 flow [2024-06-28 03:30:54,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:54,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:54,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:54,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:30:54,564 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 03:30:54,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:54,565 INFO L85 PathProgramCache]: Analyzing trace with hash -228222979, now seen corresponding path program 3 times [2024-06-28 03:30:54,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:54,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461432530] [2024-06-28 03:30:54,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:54,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:54,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:55,497 INFO 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 03:30:55,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:55,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461432530] [2024-06-28 03:30:55,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461432530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:55,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:55,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:30:55,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574853110] [2024-06-28 03:30:55,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:55,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:30:55,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:55,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:30:55,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:30:55,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:30:55,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 149 transitions, 1329 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:55,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:55,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:30:55,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:57,567 INFO L124 PetriNetUnfolderBase]: 11741/16450 cut-off events. [2024-06-28 03:30:57,567 INFO L125 PetriNetUnfolderBase]: For 323015/323032 co-relation queries the response was YES. [2024-06-28 03:30:57,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93114 conditions, 16450 events. 11741/16450 cut-off events. For 323015/323032 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 91702 event pairs, 5146 based on Foata normal form. 20/16377 useless extension candidates. Maximal degree in co-relation 93071. Up to 15796 conditions per place. [2024-06-28 03:30:57,721 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 145 selfloop transitions, 42 changer transitions 0/194 dead transitions. [2024-06-28 03:30:57,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 194 transitions, 1913 flow [2024-06-28 03:30:57,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:30:57,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:30:57,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 03:30:57,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46226415094339623 [2024-06-28 03:30:57,723 INFO L175 Difference]: Start difference. First operand has 113 places, 149 transitions, 1329 flow. Second operand 8 states and 196 transitions. [2024-06-28 03:30:57,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 194 transitions, 1913 flow [2024-06-28 03:30:57,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 194 transitions, 1803 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-28 03:30:57,926 INFO L231 Difference]: Finished difference. Result has 118 places, 152 transitions, 1389 flow [2024-06-28 03:30:57,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1219, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1389, PETRI_PLACES=118, PETRI_TRANSITIONS=152} [2024-06-28 03:30:57,927 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 62 predicate places. [2024-06-28 03:30:57,927 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 152 transitions, 1389 flow [2024-06-28 03:30:57,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:57,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:57,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:57,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:30:57,927 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:30:57,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:57,928 INFO L85 PathProgramCache]: Analyzing trace with hash 8249051, now seen corresponding path program 4 times [2024-06-28 03:30:57,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:57,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787170795] [2024-06-28 03:30:57,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:57,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:58,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:58,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:58,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787170795] [2024-06-28 03:30:58,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787170795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:58,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:58,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:30:58,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367274021] [2024-06-28 03:30:58,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:58,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:30:58,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:58,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:30:58,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:30:59,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:30:59,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 152 transitions, 1389 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:59,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:59,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:30:59,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:00,801 INFO L124 PetriNetUnfolderBase]: 11726/16429 cut-off events. [2024-06-28 03:31:00,801 INFO L125 PetriNetUnfolderBase]: For 350687/350704 co-relation queries the response was YES. [2024-06-28 03:31:00,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93897 conditions, 16429 events. 11726/16429 cut-off events. For 350687/350704 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 91623 event pairs, 4816 based on Foata normal form. 20/16356 useless extension candidates. Maximal degree in co-relation 93853. Up to 15647 conditions per place. [2024-06-28 03:31:00,943 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 137 selfloop transitions, 54 changer transitions 0/198 dead transitions. [2024-06-28 03:31:00,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 198 transitions, 1989 flow [2024-06-28 03:31:00,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:31:00,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:31:00,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 03:31:00,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46226415094339623 [2024-06-28 03:31:00,951 INFO L175 Difference]: Start difference. First operand has 118 places, 152 transitions, 1389 flow. Second operand 8 states and 196 transitions. [2024-06-28 03:31:00,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 198 transitions, 1989 flow [2024-06-28 03:31:01,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 198 transitions, 1817 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-28 03:31:01,169 INFO L231 Difference]: Finished difference. Result has 118 places, 155 transitions, 1417 flow [2024-06-28 03:31:01,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1217, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1417, PETRI_PLACES=118, PETRI_TRANSITIONS=155} [2024-06-28 03:31:01,170 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 62 predicate places. [2024-06-28 03:31:01,170 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 155 transitions, 1417 flow [2024-06-28 03:31:01,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:01,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:01,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:01,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:31:01,171 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 03:31:01,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:01,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1976089866, now seen corresponding path program 2 times [2024-06-28 03:31:01,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:01,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925741167] [2024-06-28 03:31:01,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:01,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:01,882 INFO 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 03:31:01,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:01,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925741167] [2024-06-28 03:31:01,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925741167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:01,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:01,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:31:01,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773888895] [2024-06-28 03:31:01,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:01,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:31:01,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:01,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:31:01,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:31:01,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:31:01,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 155 transitions, 1417 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:01,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:01,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:31:01,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:03,650 INFO L124 PetriNetUnfolderBase]: 11083/15740 cut-off events. [2024-06-28 03:31:03,650 INFO L125 PetriNetUnfolderBase]: For 377556/377571 co-relation queries the response was YES. [2024-06-28 03:31:03,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91998 conditions, 15740 events. 11083/15740 cut-off events. For 377556/377571 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 90278 event pairs, 5117 based on Foata normal form. 17/15633 useless extension candidates. Maximal degree in co-relation 91955. Up to 14935 conditions per place. [2024-06-28 03:31:03,787 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 119 selfloop transitions, 35 changer transitions 0/173 dead transitions. [2024-06-28 03:31:03,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 173 transitions, 1781 flow [2024-06-28 03:31:03,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:31:03,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:31:03,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-28 03:31:03,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4591194968553459 [2024-06-28 03:31:03,789 INFO L175 Difference]: Start difference. First operand has 118 places, 155 transitions, 1417 flow. Second operand 6 states and 146 transitions. [2024-06-28 03:31:03,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 173 transitions, 1781 flow [2024-06-28 03:31:03,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 173 transitions, 1579 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-28 03:31:04,001 INFO L231 Difference]: Finished difference. Result has 118 places, 155 transitions, 1294 flow [2024-06-28 03:31:04,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1215, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1294, PETRI_PLACES=118, PETRI_TRANSITIONS=155} [2024-06-28 03:31:04,002 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 62 predicate places. [2024-06-28 03:31:04,002 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 155 transitions, 1294 flow [2024-06-28 03:31:04,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:04,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:04,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:04,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:31:04,003 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 03:31:04,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:04,003 INFO L85 PathProgramCache]: Analyzing trace with hash -840036938, now seen corresponding path program 1 times [2024-06-28 03:31:04,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:04,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506209586] [2024-06-28 03:31:04,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:04,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:04,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:04,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:04,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:04,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506209586] [2024-06-28 03:31:04,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506209586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:04,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:04,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:31:04,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257026043] [2024-06-28 03:31:04,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:04,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:31:04,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:04,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:31:04,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:31:04,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:31:04,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 155 transitions, 1294 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:04,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:04,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:31:04,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:06,396 INFO L124 PetriNetUnfolderBase]: 10333/14892 cut-off events. [2024-06-28 03:31:06,396 INFO L125 PetriNetUnfolderBase]: For 352102/352108 co-relation queries the response was YES. [2024-06-28 03:31:06,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86797 conditions, 14892 events. 10333/14892 cut-off events. For 352102/352108 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 86602 event pairs, 4392 based on Foata normal form. 6/14770 useless extension candidates. Maximal degree in co-relation 86753. Up to 14061 conditions per place. [2024-06-28 03:31:06,530 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 157 selfloop transitions, 21 changer transitions 0/186 dead transitions. [2024-06-28 03:31:06,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 186 transitions, 1928 flow [2024-06-28 03:31:06,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:31:06,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:31:06,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-28 03:31:06,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4748427672955975 [2024-06-28 03:31:06,532 INFO L175 Difference]: Start difference. First operand has 118 places, 155 transitions, 1294 flow. Second operand 6 states and 151 transitions. [2024-06-28 03:31:06,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 186 transitions, 1928 flow [2024-06-28 03:31:06,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 186 transitions, 1827 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 03:31:06,814 INFO L231 Difference]: Finished difference. Result has 119 places, 163 transitions, 1372 flow [2024-06-28 03:31:06,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1193, 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=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1372, PETRI_PLACES=119, PETRI_TRANSITIONS=163} [2024-06-28 03:31:06,814 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 63 predicate places. [2024-06-28 03:31:06,814 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 163 transitions, 1372 flow [2024-06-28 03:31:06,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:06,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:06,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:06,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:31:06,815 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 03:31:06,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:06,815 INFO L85 PathProgramCache]: Analyzing trace with hash 2006482638, now seen corresponding path program 2 times [2024-06-28 03:31:06,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:06,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537774752] [2024-06-28 03:31:06,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:06,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:06,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:07,497 INFO 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 03:31:07,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:07,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537774752] [2024-06-28 03:31:07,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537774752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:07,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:07,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:31:07,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146031632] [2024-06-28 03:31:07,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:07,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:31:07,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:07,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:31:07,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:31:07,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:31:07,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 163 transitions, 1372 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:07,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:07,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:31:07,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:09,120 INFO L124 PetriNetUnfolderBase]: 10326/14900 cut-off events. [2024-06-28 03:31:09,120 INFO L125 PetriNetUnfolderBase]: For 382027/382034 co-relation queries the response was YES. [2024-06-28 03:31:09,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89802 conditions, 14900 events. 10326/14900 cut-off events. For 382027/382034 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 86773 event pairs, 4395 based on Foata normal form. 6/14777 useless extension candidates. Maximal degree in co-relation 89757. Up to 14054 conditions per place. [2024-06-28 03:31:09,245 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 152 selfloop transitions, 21 changer transitions 0/181 dead transitions. [2024-06-28 03:31:09,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 181 transitions, 1774 flow [2024-06-28 03:31:09,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:31:09,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:31:09,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-28 03:31:09,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4591194968553459 [2024-06-28 03:31:09,246 INFO L175 Difference]: Start difference. First operand has 119 places, 163 transitions, 1372 flow. Second operand 6 states and 146 transitions. [2024-06-28 03:31:09,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 181 transitions, 1774 flow [2024-06-28 03:31:09,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 181 transitions, 1670 flow, removed 47 selfloop flow, removed 2 redundant places. [2024-06-28 03:31:09,490 INFO L231 Difference]: Finished difference. Result has 123 places, 163 transitions, 1319 flow [2024-06-28 03:31:09,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1268, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1319, PETRI_PLACES=123, PETRI_TRANSITIONS=163} [2024-06-28 03:31:09,491 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 67 predicate places. [2024-06-28 03:31:09,491 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 163 transitions, 1319 flow [2024-06-28 03:31:09,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:09,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:09,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:09,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:31:09,492 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 03:31:09,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:09,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1190249643, now seen corresponding path program 1 times [2024-06-28 03:31:09,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:09,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524246367] [2024-06-28 03:31:09,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:09,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:10,575 INFO 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 03:31:10,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:10,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524246367] [2024-06-28 03:31:10,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524246367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:10,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:10,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:31:10,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893340460] [2024-06-28 03:31:10,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:10,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:31:10,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:10,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:31:10,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:31:10,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:31:10,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 163 transitions, 1319 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 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 03:31:10,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:10,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:31:10,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:12,814 INFO L124 PetriNetUnfolderBase]: 11997/16858 cut-off events. [2024-06-28 03:31:12,815 INFO L125 PetriNetUnfolderBase]: For 478330/478332 co-relation queries the response was YES. [2024-06-28 03:31:12,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103979 conditions, 16858 events. 11997/16858 cut-off events. For 478330/478332 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 94665 event pairs, 4995 based on Foata normal form. 18/16776 useless extension candidates. Maximal degree in co-relation 103932. Up to 15557 conditions per place. [2024-06-28 03:31:13,016 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 148 selfloop transitions, 79 changer transitions 0/234 dead transitions. [2024-06-28 03:31:13,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 234 transitions, 2168 flow [2024-06-28 03:31:13,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:31:13,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:31:13,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-28 03:31:13,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.480083857442348 [2024-06-28 03:31:13,018 INFO L175 Difference]: Start difference. First operand has 123 places, 163 transitions, 1319 flow. Second operand 9 states and 229 transitions. [2024-06-28 03:31:13,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 234 transitions, 2168 flow [2024-06-28 03:31:13,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 234 transitions, 2111 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 03:31:13,419 INFO L231 Difference]: Finished difference. Result has 129 places, 179 transitions, 1678 flow [2024-06-28 03:31:13,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1262, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1678, PETRI_PLACES=129, PETRI_TRANSITIONS=179} [2024-06-28 03:31:13,420 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 73 predicate places. [2024-06-28 03:31:13,420 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 179 transitions, 1678 flow [2024-06-28 03:31:13,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 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 03:31:13,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:13,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:13,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:31:13,421 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:31:13,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:13,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1798072984, now seen corresponding path program 1 times [2024-06-28 03:31:13,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:13,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108039262] [2024-06-28 03:31:13,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:13,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:14,266 INFO 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 03:31:14,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:14,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108039262] [2024-06-28 03:31:14,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108039262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:14,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:14,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:31:14,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850359259] [2024-06-28 03:31:14,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:14,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:31:14,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:14,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:31:14,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:31:14,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:31:14,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 179 transitions, 1678 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 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 03:31:14,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:14,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:31:14,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:16,380 INFO L124 PetriNetUnfolderBase]: 11396/16260 cut-off events. [2024-06-28 03:31:16,381 INFO L125 PetriNetUnfolderBase]: For 515513/515534 co-relation queries the response was YES. [2024-06-28 03:31:16,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103862 conditions, 16260 events. 11396/16260 cut-off events. For 515513/515534 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 94327 event pairs, 4911 based on Foata normal form. 24/16147 useless extension candidates. Maximal degree in co-relation 103812. Up to 15297 conditions per place. [2024-06-28 03:31:16,535 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 155 selfloop transitions, 45 changer transitions 0/219 dead transitions. [2024-06-28 03:31:16,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 219 transitions, 2412 flow [2024-06-28 03:31:16,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:31:16,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:31:16,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-28 03:31:16,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48517520215633425 [2024-06-28 03:31:16,536 INFO L175 Difference]: Start difference. First operand has 129 places, 179 transitions, 1678 flow. Second operand 7 states and 180 transitions. [2024-06-28 03:31:16,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 219 transitions, 2412 flow [2024-06-28 03:31:16,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 219 transitions, 2250 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-28 03:31:16,883 INFO L231 Difference]: Finished difference. Result has 132 places, 187 transitions, 1763 flow [2024-06-28 03:31:16,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1763, PETRI_PLACES=132, PETRI_TRANSITIONS=187} [2024-06-28 03:31:16,884 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 76 predicate places. [2024-06-28 03:31:16,884 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 187 transitions, 1763 flow [2024-06-28 03:31:16,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 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 03:31:16,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:16,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:16,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:31:16,885 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 03:31:16,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:16,885 INFO L85 PathProgramCache]: Analyzing trace with hash 84198553, now seen corresponding path program 2 times [2024-06-28 03:31:16,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:16,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217241802] [2024-06-28 03:31:16,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:16,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:18,141 INFO 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 03:31:18,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:18,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217241802] [2024-06-28 03:31:18,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217241802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:18,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:18,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:31:18,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066414520] [2024-06-28 03:31:18,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:18,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:31:18,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:18,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:31:18,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:31:18,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:31:18,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 187 transitions, 1763 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 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 03:31:18,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:18,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:31:18,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:20,514 INFO L124 PetriNetUnfolderBase]: 12303/17336 cut-off events. [2024-06-28 03:31:20,515 INFO L125 PetriNetUnfolderBase]: For 564820/564822 co-relation queries the response was YES. [2024-06-28 03:31:20,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113333 conditions, 17336 events. 12303/17336 cut-off events. For 564820/564822 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 98147 event pairs, 5019 based on Foata normal form. 18/17247 useless extension candidates. Maximal degree in co-relation 113282. Up to 16164 conditions per place. [2024-06-28 03:31:20,670 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 158 selfloop transitions, 86 changer transitions 0/251 dead transitions. [2024-06-28 03:31:20,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 251 transitions, 2592 flow [2024-06-28 03:31:20,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:31:20,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:31:20,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-28 03:31:20,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47379454926624737 [2024-06-28 03:31:20,671 INFO L175 Difference]: Start difference. First operand has 132 places, 187 transitions, 1763 flow. Second operand 9 states and 226 transitions. [2024-06-28 03:31:20,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 251 transitions, 2592 flow [2024-06-28 03:31:21,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 251 transitions, 2516 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-28 03:31:21,069 INFO L231 Difference]: Finished difference. Result has 140 places, 199 transitions, 2072 flow [2024-06-28 03:31:21,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1687, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2072, PETRI_PLACES=140, PETRI_TRANSITIONS=199} [2024-06-28 03:31:21,069 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 84 predicate places. [2024-06-28 03:31:21,069 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 199 transitions, 2072 flow [2024-06-28 03:31:21,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 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 03:31:21,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:21,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:21,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:31:21,070 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 03:31:21,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:21,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1339310011, now seen corresponding path program 3 times [2024-06-28 03:31:21,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:21,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146244504] [2024-06-28 03:31:21,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:21,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:22,224 INFO 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 03:31:22,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:22,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146244504] [2024-06-28 03:31:22,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146244504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:22,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:22,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:31:22,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445681941] [2024-06-28 03:31:22,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:22,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:31:22,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:22,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:31:22,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:31:22,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:31:22,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 199 transitions, 2072 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 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 03:31:22,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:22,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:31:22,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:25,189 INFO L124 PetriNetUnfolderBase]: 12487/17648 cut-off events. [2024-06-28 03:31:25,189 INFO L125 PetriNetUnfolderBase]: For 622031/622033 co-relation queries the response was YES. [2024-06-28 03:31:25,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118583 conditions, 17648 events. 12487/17648 cut-off events. For 622031/622033 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 100487 event pairs, 4630 based on Foata normal form. 18/17559 useless extension candidates. Maximal degree in co-relation 118528. Up to 15463 conditions per place. [2024-06-28 03:31:25,335 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 147 selfloop transitions, 106 changer transitions 0/260 dead transitions. [2024-06-28 03:31:25,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 260 transitions, 3074 flow [2024-06-28 03:31:25,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:31:25,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:31:25,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-28 03:31:25,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4779874213836478 [2024-06-28 03:31:25,337 INFO L175 Difference]: Start difference. First operand has 140 places, 199 transitions, 2072 flow. Second operand 9 states and 228 transitions. [2024-06-28 03:31:25,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 260 transitions, 3074 flow [2024-06-28 03:31:25,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 260 transitions, 2919 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-28 03:31:25,886 INFO L231 Difference]: Finished difference. Result has 147 places, 205 transitions, 2381 flow [2024-06-28 03:31:25,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1917, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2381, PETRI_PLACES=147, PETRI_TRANSITIONS=205} [2024-06-28 03:31:25,887 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 91 predicate places. [2024-06-28 03:31:25,887 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 205 transitions, 2381 flow [2024-06-28 03:31:25,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 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 03:31:25,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:25,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:25,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:31:25,888 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:31:25,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:25,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1515023189, now seen corresponding path program 4 times [2024-06-28 03:31:25,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:25,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197935444] [2024-06-28 03:31:25,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:25,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:26,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:26,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:26,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197935444] [2024-06-28 03:31:26,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197935444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:26,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:26,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:31:26,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659873913] [2024-06-28 03:31:26,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:26,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:31:26,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:26,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:31:26,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:31:27,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:31:27,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 205 transitions, 2381 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 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 03:31:27,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:27,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:31:27,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:29,890 INFO L124 PetriNetUnfolderBase]: 12448/17591 cut-off events. [2024-06-28 03:31:29,890 INFO L125 PetriNetUnfolderBase]: For 649059/649061 co-relation queries the response was YES. [2024-06-28 03:31:29,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118498 conditions, 17591 events. 12448/17591 cut-off events. For 649059/649061 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 100185 event pairs, 5046 based on Foata normal form. 18/17502 useless extension candidates. Maximal degree in co-relation 118441. Up to 16387 conditions per place. [2024-06-28 03:31:30,039 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 165 selfloop transitions, 84 changer transitions 0/256 dead transitions. [2024-06-28 03:31:30,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 256 transitions, 3019 flow [2024-06-28 03:31:30,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:31:30,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:31:30,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-28 03:31:30,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47379454926624737 [2024-06-28 03:31:30,041 INFO L175 Difference]: Start difference. First operand has 147 places, 205 transitions, 2381 flow. Second operand 9 states and 226 transitions. [2024-06-28 03:31:30,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 256 transitions, 3019 flow [2024-06-28 03:31:30,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 256 transitions, 2841 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-28 03:31:30,690 INFO L231 Difference]: Finished difference. Result has 150 places, 204 transitions, 2334 flow [2024-06-28 03:31:30,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2159, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2334, PETRI_PLACES=150, PETRI_TRANSITIONS=204} [2024-06-28 03:31:30,691 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 94 predicate places. [2024-06-28 03:31:30,691 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 204 transitions, 2334 flow [2024-06-28 03:31:30,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 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 03:31:30,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:30,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:30,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:31:30,691 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 03:31:30,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:30,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1443394234, now seen corresponding path program 2 times [2024-06-28 03:31:30,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:30,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297762031] [2024-06-28 03:31:30,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:30,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:31,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:31,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:31,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297762031] [2024-06-28 03:31:31,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297762031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:31,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:31,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:31:31,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781371852] [2024-06-28 03:31:31,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:31,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:31:31,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:31,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:31:31,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:31:31,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:31:31,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 204 transitions, 2334 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 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 03:31:31,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:31,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:31:31,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:34,263 INFO L124 PetriNetUnfolderBase]: 11765/16853 cut-off events. [2024-06-28 03:31:34,263 INFO L125 PetriNetUnfolderBase]: For 664392/664473 co-relation queries the response was YES. [2024-06-28 03:31:34,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114793 conditions, 16853 events. 11765/16853 cut-off events. For 664392/664473 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 98726 event pairs, 4959 based on Foata normal form. 31/16715 useless extension candidates. Maximal degree in co-relation 114734. Up to 15847 conditions per place. [2024-06-28 03:31:34,423 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 165 selfloop transitions, 50 changer transitions 0/234 dead transitions. [2024-06-28 03:31:34,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 234 transitions, 3032 flow [2024-06-28 03:31:34,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:31:34,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:31:34,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-28 03:31:34,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609164420485175 [2024-06-28 03:31:34,424 INFO L175 Difference]: Start difference. First operand has 150 places, 204 transitions, 2334 flow. Second operand 7 states and 171 transitions. [2024-06-28 03:31:34,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 234 transitions, 3032 flow [2024-06-28 03:31:35,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 234 transitions, 2754 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-28 03:31:35,120 INFO L231 Difference]: Finished difference. Result has 149 places, 208 transitions, 2241 flow [2024-06-28 03:31:35,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2056, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2241, PETRI_PLACES=149, PETRI_TRANSITIONS=208} [2024-06-28 03:31:35,120 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 93 predicate places. [2024-06-28 03:31:35,120 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 208 transitions, 2241 flow [2024-06-28 03:31:35,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 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 03:31:35,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:35,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:35,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:31:35,121 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:31:35,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:35,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1129245770, now seen corresponding path program 3 times [2024-06-28 03:31:35,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:35,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997934855] [2024-06-28 03:31:35,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:35,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:35,959 INFO 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 03:31:35,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:35,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997934855] [2024-06-28 03:31:35,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997934855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:35,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:35,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:31:35,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338170558] [2024-06-28 03:31:35,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:35,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:31:35,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:35,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:31:35,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:31:36,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:31:36,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 208 transitions, 2241 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 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 03:31:36,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:36,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:31:36,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:38,654 INFO L124 PetriNetUnfolderBase]: 11745/16821 cut-off events. [2024-06-28 03:31:38,654 INFO L125 PetriNetUnfolderBase]: For 685714/685795 co-relation queries the response was YES. [2024-06-28 03:31:38,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114510 conditions, 16821 events. 11745/16821 cut-off events. For 685714/685795 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 98520 event pairs, 4953 based on Foata normal form. 27/16683 useless extension candidates. Maximal degree in co-relation 114452. Up to 15833 conditions per place. [2024-06-28 03:31:38,800 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 165 selfloop transitions, 49 changer transitions 0/233 dead transitions. [2024-06-28 03:31:38,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 233 transitions, 2743 flow [2024-06-28 03:31:38,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:31:38,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:31:38,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-28 03:31:38,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609164420485175 [2024-06-28 03:31:38,804 INFO L175 Difference]: Start difference. First operand has 149 places, 208 transitions, 2241 flow. Second operand 7 states and 171 transitions. [2024-06-28 03:31:38,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 233 transitions, 2743 flow [2024-06-28 03:31:39,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 233 transitions, 2563 flow, removed 50 selfloop flow, removed 4 redundant places. [2024-06-28 03:31:39,305 INFO L231 Difference]: Finished difference. Result has 152 places, 208 transitions, 2168 flow [2024-06-28 03:31:39,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2061, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2168, PETRI_PLACES=152, PETRI_TRANSITIONS=208} [2024-06-28 03:31:39,306 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 96 predicate places. [2024-06-28 03:31:39,306 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 208 transitions, 2168 flow [2024-06-28 03:31:39,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 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 03:31:39,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:39,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:39,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:31:39,307 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 03:31:39,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:39,307 INFO L85 PathProgramCache]: Analyzing trace with hash -271459390, now seen corresponding path program 1 times [2024-06-28 03:31:39,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:39,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872149149] [2024-06-28 03:31:39,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:39,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:39,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:40,237 INFO 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 03:31:40,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:40,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872149149] [2024-06-28 03:31:40,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872149149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:40,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:40,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:31:40,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103315118] [2024-06-28 03:31:40,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:40,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:31:40,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:40,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:31:40,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:31:40,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:31:40,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 208 transitions, 2168 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 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 03:31:40,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:40,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:31:40,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:42,636 INFO L124 PetriNetUnfolderBase]: 11105/16115 cut-off events. [2024-06-28 03:31:42,637 INFO L125 PetriNetUnfolderBase]: For 625734/625736 co-relation queries the response was YES. [2024-06-28 03:31:42,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107990 conditions, 16115 events. 11105/16115 cut-off events. For 625734/625736 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 95329 event pairs, 4330 based on Foata normal form. 2/15976 useless extension candidates. Maximal degree in co-relation 107931. Up to 15215 conditions per place. [2024-06-28 03:31:42,939 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 214 selfloop transitions, 18 changer transitions 0/240 dead transitions. [2024-06-28 03:31:42,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 240 transitions, 2800 flow [2024-06-28 03:31:42,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:31:42,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:31:42,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 03:31:42,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4582210242587601 [2024-06-28 03:31:42,940 INFO L175 Difference]: Start difference. First operand has 152 places, 208 transitions, 2168 flow. Second operand 7 states and 170 transitions. [2024-06-28 03:31:42,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 240 transitions, 2800 flow [2024-06-28 03:31:43,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 240 transitions, 2660 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 03:31:43,458 INFO L231 Difference]: Finished difference. Result has 152 places, 212 transitions, 2161 flow [2024-06-28 03:31:43,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2028, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2161, PETRI_PLACES=152, PETRI_TRANSITIONS=212} [2024-06-28 03:31:43,459 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 96 predicate places. [2024-06-28 03:31:43,459 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 212 transitions, 2161 flow [2024-06-28 03:31:43,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 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 03:31:43,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:43,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:43,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:31:43,459 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 03:31:43,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:43,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1620757138, now seen corresponding path program 2 times [2024-06-28 03:31:43,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:43,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820950678] [2024-06-28 03:31:43,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:43,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:44,232 INFO 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 03:31:44,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:44,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820950678] [2024-06-28 03:31:44,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820950678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:44,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:44,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:31:44,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648446197] [2024-06-28 03:31:44,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:44,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:31:44,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:44,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:31:44,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:31:44,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:31:44,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 212 transitions, 2161 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 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 03:31:44,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:44,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:31:44,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:46,927 INFO L124 PetriNetUnfolderBase]: 11121/16038 cut-off events. [2024-06-28 03:31:46,927 INFO L125 PetriNetUnfolderBase]: For 662394/662398 co-relation queries the response was YES. [2024-06-28 03:31:46,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110976 conditions, 16038 events. 11121/16038 cut-off events. For 662394/662398 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 94017 event pairs, 4334 based on Foata normal form. 4/15927 useless extension candidates. Maximal degree in co-relation 110916. Up to 15189 conditions per place. [2024-06-28 03:31:47,066 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 204 selfloop transitions, 35 changer transitions 0/247 dead transitions. [2024-06-28 03:31:47,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 247 transitions, 3025 flow [2024-06-28 03:31:47,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:31:47,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:31:47,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 03:31:47,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46630727762803237 [2024-06-28 03:31:47,067 INFO L175 Difference]: Start difference. First operand has 152 places, 212 transitions, 2161 flow. Second operand 7 states and 173 transitions. [2024-06-28 03:31:47,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 247 transitions, 3025 flow [2024-06-28 03:31:47,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 247 transitions, 2922 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-28 03:31:47,685 INFO L231 Difference]: Finished difference. Result has 154 places, 220 transitions, 2321 flow [2024-06-28 03:31:47,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2058, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2321, PETRI_PLACES=154, PETRI_TRANSITIONS=220} [2024-06-28 03:31:47,686 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 98 predicate places. [2024-06-28 03:31:47,686 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 220 transitions, 2321 flow [2024-06-28 03:31:47,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 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 03:31:47,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:47,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:47,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:31:47,687 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:31:47,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:47,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1620756952, now seen corresponding path program 1 times [2024-06-28 03:31:47,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:47,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879982396] [2024-06-28 03:31:47,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:47,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:48,584 INFO 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 03:31:48,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:48,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879982396] [2024-06-28 03:31:48,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879982396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:48,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:48,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:31:48,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265916850] [2024-06-28 03:31:48,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:48,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:31:48,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:48,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:31:48,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:31:48,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:31:48,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 220 transitions, 2321 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 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 03:31:48,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:48,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:31:48,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:51,032 INFO L124 PetriNetUnfolderBase]: 11153/16064 cut-off events. [2024-06-28 03:31:51,032 INFO L125 PetriNetUnfolderBase]: For 724461/724465 co-relation queries the response was YES. [2024-06-28 03:31:51,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114419 conditions, 16064 events. 11153/16064 cut-off events. For 724461/724465 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 94209 event pairs, 4305 based on Foata normal form. 4/15946 useless extension candidates. Maximal degree in co-relation 114358. Up to 15205 conditions per place. [2024-06-28 03:31:51,181 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 219 selfloop transitions, 31 changer transitions 0/258 dead transitions. [2024-06-28 03:31:51,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 258 transitions, 3205 flow [2024-06-28 03:31:51,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:31:51,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:31:51,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 03:31:51,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4743935309973046 [2024-06-28 03:31:51,182 INFO L175 Difference]: Start difference. First operand has 154 places, 220 transitions, 2321 flow. Second operand 7 states and 176 transitions. [2024-06-28 03:31:51,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 258 transitions, 3205 flow [2024-06-28 03:31:51,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 258 transitions, 3097 flow, removed 44 selfloop flow, removed 3 redundant places. [2024-06-28 03:31:51,978 INFO L231 Difference]: Finished difference. Result has 158 places, 228 transitions, 2456 flow [2024-06-28 03:31:51,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2213, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2456, PETRI_PLACES=158, PETRI_TRANSITIONS=228} [2024-06-28 03:31:51,979 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 102 predicate places. [2024-06-28 03:31:51,979 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 228 transitions, 2456 flow [2024-06-28 03:31:51,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 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 03:31:51,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:51,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:51,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:31:51,979 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:31:51,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:51,980 INFO L85 PathProgramCache]: Analyzing trace with hash 2071421702, now seen corresponding path program 2 times [2024-06-28 03:31:51,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:51,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597712954] [2024-06-28 03:31:51,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:51,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:52,867 INFO 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 03:31:52,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:52,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597712954] [2024-06-28 03:31:52,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597712954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:52,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:52,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:31:52,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054877239] [2024-06-28 03:31:52,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:52,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:31:52,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:52,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:31:52,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:31:52,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:31:52,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 228 transitions, 2456 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 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 03:31:52,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:52,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:31:52,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:55,477 INFO L124 PetriNetUnfolderBase]: 11185/16119 cut-off events. [2024-06-28 03:31:55,477 INFO L125 PetriNetUnfolderBase]: For 768090/768097 co-relation queries the response was YES. [2024-06-28 03:31:55,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117904 conditions, 16119 events. 11185/16119 cut-off events. For 768090/768097 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 94526 event pairs, 4276 based on Foata normal form. 8/16009 useless extension candidates. Maximal degree in co-relation 117841. Up to 15234 conditions per place. [2024-06-28 03:31:55,641 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 216 selfloop transitions, 35 changer transitions 0/259 dead transitions. [2024-06-28 03:31:55,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 259 transitions, 3262 flow [2024-06-28 03:31:55,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:31:55,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:31:55,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 03:31:55,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46630727762803237 [2024-06-28 03:31:55,643 INFO L175 Difference]: Start difference. First operand has 158 places, 228 transitions, 2456 flow. Second operand 7 states and 173 transitions. [2024-06-28 03:31:55,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 259 transitions, 3262 flow [2024-06-28 03:31:56,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 259 transitions, 3154 flow, removed 45 selfloop flow, removed 3 redundant places. [2024-06-28 03:31:56,392 INFO L231 Difference]: Finished difference. Result has 162 places, 232 transitions, 2517 flow [2024-06-28 03:31:56,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2356, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2517, PETRI_PLACES=162, PETRI_TRANSITIONS=232} [2024-06-28 03:31:56,392 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 106 predicate places. [2024-06-28 03:31:56,392 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 232 transitions, 2517 flow [2024-06-28 03:31:56,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 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 03:31:56,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:56,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:56,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:31:56,393 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:31:56,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:56,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1616108812, now seen corresponding path program 3 times [2024-06-28 03:31:56,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:56,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568190464] [2024-06-28 03:31:56,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:56,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:57,342 INFO 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 03:31:57,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:57,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568190464] [2024-06-28 03:31:57,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568190464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:57,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:57,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:31:57,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790817329] [2024-06-28 03:31:57,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:57,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:31:57,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:57,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:31:57,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:31:57,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:31:57,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 232 transitions, 2517 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 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 03:31:57,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:57,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:31:57,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:59,998 INFO L124 PetriNetUnfolderBase]: 11171/16101 cut-off events. [2024-06-28 03:31:59,998 INFO L125 PetriNetUnfolderBase]: For 797894/797901 co-relation queries the response was YES. [2024-06-28 03:32:00,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118582 conditions, 16101 events. 11171/16101 cut-off events. For 797894/797901 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 94399 event pairs, 4276 based on Foata normal form. 8/15991 useless extension candidates. Maximal degree in co-relation 118517. Up to 15222 conditions per place. [2024-06-28 03:32:00,141 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 212 selfloop transitions, 36 changer transitions 0/256 dead transitions. [2024-06-28 03:32:00,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 256 transitions, 3085 flow [2024-06-28 03:32:00,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:32:00,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:32:00,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 03:32:00,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4555256064690027 [2024-06-28 03:32:00,144 INFO L175 Difference]: Start difference. First operand has 162 places, 232 transitions, 2517 flow. Second operand 7 states and 169 transitions. [2024-06-28 03:32:00,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 256 transitions, 3085 flow [2024-06-28 03:32:01,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 256 transitions, 2890 flow, removed 61 selfloop flow, removed 5 redundant places. [2024-06-28 03:32:01,045 INFO L231 Difference]: Finished difference. Result has 164 places, 232 transitions, 2403 flow [2024-06-28 03:32:01,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2322, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2403, PETRI_PLACES=164, PETRI_TRANSITIONS=232} [2024-06-28 03:32:01,046 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 108 predicate places. [2024-06-28 03:32:01,046 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 232 transitions, 2403 flow [2024-06-28 03:32:01,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 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 03:32:01,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:01,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:01,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:32:01,046 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:32:01,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:01,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1443625618, now seen corresponding path program 3 times [2024-06-28 03:32:01,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:01,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446698109] [2024-06-28 03:32:01,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:01,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:01,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:02,016 INFO 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 03:32:02,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:02,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446698109] [2024-06-28 03:32:02,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446698109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:02,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:02,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:32:02,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480072825] [2024-06-28 03:32:02,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:02,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:32:02,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:02,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:32:02,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:32:02,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:32:02,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 232 transitions, 2403 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 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 03:32:02,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:02,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:32:02,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand