./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe007_power.opt-thin001_power.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/safe007_power.opt-thin001_power.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/safe007_power.opt-thin001_power.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe007_power.opt-thin001_power.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 03:56:09,862 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:56:09,956 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:56:09,963 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:56:09,964 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:56:09,994 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:56:09,995 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:56:09,995 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:56:09,996 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:56:10,000 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:56:10,000 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:56:10,001 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:56:10,002 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:56:10,003 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:56:10,003 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:56:10,004 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:56:10,004 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:56:10,004 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:56:10,004 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:56:10,005 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:56:10,005 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:56:10,005 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:56:10,006 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:56:10,006 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:56:10,006 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:56:10,006 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:56:10,007 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:56:10,007 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:56:10,007 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:56:10,008 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:56:10,009 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:56:10,009 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:56:10,009 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:56:10,009 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:56:10,010 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:56:10,010 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:56:10,010 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:56:10,010 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:56:10,010 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:56:10,011 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:56:10,011 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:56:10,011 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:56:10,011 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:56:10,011 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:56:10,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:56:10,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:56:10,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:56:10,296 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:56:10,297 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:56:10,298 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe007_power.opt-thin001_power.opt.yml/witness.yml [2024-06-28 03:56:10,557 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:56:10,558 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:56:10,560 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe007_power.opt-thin001_power.opt.i [2024-06-28 03:56:11,736 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:56:11,996 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:56:11,997 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_power.opt-thin001_power.opt.i [2024-06-28 03:56:12,009 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abbded098/77796d2e740f46e89b44f4a9e7fcfded/FLAG9b9a60d64 [2024-06-28 03:56:12,023 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abbded098/77796d2e740f46e89b44f4a9e7fcfded [2024-06-28 03:56:12,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:56:12,025 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:56:12,026 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:56:12,026 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:56:12,031 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:56:12,031 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:56:10" (1/2) ... [2024-06-28 03:56:12,032 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37ca577e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:56:12, skipping insertion in model container [2024-06-28 03:56:12,032 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:56:10" (1/2) ... [2024-06-28 03:56:12,034 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@40dd2a38 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:56:12, skipping insertion in model container [2024-06-28 03:56:12,034 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:56:12" (2/2) ... [2024-06-28 03:56:12,034 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37ca577e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:56:12, skipping insertion in model container [2024-06-28 03:56:12,034 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:56:12" (2/2) ... [2024-06-28 03:56:12,035 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:56:12,176 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:56:12,177 INFO L97 edCorrectnessWitness]: Location invariant before [L855-L855] (((((((((((((((((((((((((((((((((! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p2_EAX$flush_delayed == (_Bool)0) && __unbuffered_p2_EAX$mem_tmp == 0) && __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p2_EAX$w_buff0 == 0) && __unbuffered_p2_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p2_EAX$w_buff1 == 0) && __unbuffered_p2_EAX$w_buff1_used == (_Bool)0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & y && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1)))) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & y && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1))))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0) [2024-06-28 03:56:12,177 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] (((((((((((((((((((((((((((((((((! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p2_EAX$flush_delayed == (_Bool)0) && __unbuffered_p2_EAX$mem_tmp == 0) && __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p2_EAX$w_buff0 == 0) && __unbuffered_p2_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p2_EAX$w_buff1 == 0) && __unbuffered_p2_EAX$w_buff1_used == (_Bool)0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & y && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1)))) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & y && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1))))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0) [2024-06-28 03:56:12,178 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] (((((((((((((((((((((((((((((((((! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p2_EAX$flush_delayed == (_Bool)0) && __unbuffered_p2_EAX$mem_tmp == 0) && __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p2_EAX$w_buff0 == 0) && __unbuffered_p2_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p2_EAX$w_buff1 == 0) && __unbuffered_p2_EAX$w_buff1_used == (_Bool)0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & y && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1)))) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & y && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1))))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0) [2024-06-28 03:56:12,178 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:56:12,179 INFO L106 edCorrectnessWitness]: ghost_update [L851-L851] multithreaded = 1; [2024-06-28 03:56:12,223 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:56:12,662 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:56:12,678 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:56:12,908 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:56:12,959 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:56:12,960 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:56:12 WrapperNode [2024-06-28 03:56:12,960 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:56:12,962 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:56:12,962 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:56:12,962 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:56:12,969 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:56:12" (1/1) ... [2024-06-28 03:56:13,000 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:56:12" (1/1) ... [2024-06-28 03:56:13,045 INFO L138 Inliner]: procedures = 175, calls = 84, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 255 [2024-06-28 03:56:13,049 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:56:13,050 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:56:13,050 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:56:13,050 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:56:13,060 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:56:12" (1/1) ... [2024-06-28 03:56:13,060 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:56:12" (1/1) ... [2024-06-28 03:56:13,066 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:56:12" (1/1) ... [2024-06-28 03:56:13,090 INFO L175 MemorySlicer]: Split 42 memory accesses to 2 slices as follows [2, 40]. 95 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 5 writes are split as follows [0, 5]. [2024-06-28 03:56:13,091 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:56:12" (1/1) ... [2024-06-28 03:56:13,091 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:56:12" (1/1) ... [2024-06-28 03:56:13,119 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:56:12" (1/1) ... [2024-06-28 03:56:13,121 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:56:12" (1/1) ... [2024-06-28 03:56:13,124 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:56:12" (1/1) ... [2024-06-28 03:56:13,126 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:56:12" (1/1) ... [2024-06-28 03:56:13,144 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:56:13,145 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:56:13,145 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:56:13,145 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:56:13,146 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:56:12" (1/1) ... [2024-06-28 03:56:13,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:56:13,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:56:13,180 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 03:56:13,202 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 03:56:13,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 03:56:13,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 03:56:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 03:56:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 03:56:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:56:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:56:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:56:13,222 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:56:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:56:13,222 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:56:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:56:13,223 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:56:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:56:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 03:56:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:56:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:56:13,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:56:13,225 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 03:56:13,372 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:56:13,374 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:56:13,974 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:56:13,974 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:56:14,446 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:56:14,446 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:56:14,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:56:14 BoogieIcfgContainer [2024-06-28 03:56:14,447 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:56:14,449 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:56:14,449 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:56:14,452 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:56:14,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:56:10" (1/4) ... [2024-06-28 03:56:14,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d311caa and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:56:14, skipping insertion in model container [2024-06-28 03:56:14,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:56:12" (2/4) ... [2024-06-28 03:56:14,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d311caa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:56:14, skipping insertion in model container [2024-06-28 03:56:14,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:56:12" (3/4) ... [2024-06-28 03:56:14,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d311caa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:56:14, skipping insertion in model container [2024-06-28 03:56:14,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:56:14" (4/4) ... [2024-06-28 03:56:14,456 INFO L112 eAbstractionObserver]: Analyzing ICFG safe007_power.opt-thin001_power.opt.i [2024-06-28 03:56:14,474 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:56:14,474 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 03:56:14,474 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:56:14,577 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:56:14,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 42 transitions, 96 flow [2024-06-28 03:56:14,647 INFO L124 PetriNetUnfolderBase]: 0/39 cut-off events. [2024-06-28 03:56:14,647 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:56:14,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 39 events. 0/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:56:14,650 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 42 transitions, 96 flow [2024-06-28 03:56:14,653 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 33 transitions, 75 flow [2024-06-28 03:56:14,666 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:56:14,672 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;@2b564b16, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:56:14,672 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 03:56:14,676 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:56:14,677 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:56:14,677 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:56:14,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:14,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:56:14,678 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:14,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:14,682 INFO L85 PathProgramCache]: Analyzing trace with hash 809368729, now seen corresponding path program 1 times [2024-06-28 03:56:14,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:14,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791073653] [2024-06-28 03:56:14,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:14,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:14,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:16,733 INFO 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 03:56:16,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:16,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791073653] [2024-06-28 03:56:16,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791073653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:16,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:16,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:56:16,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212277067] [2024-06-28 03:56:16,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:16,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:56:16,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:16,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:56:16,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:56:16,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:56:16,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states 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 03:56:16,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:16,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:56:16,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:17,337 INFO L124 PetriNetUnfolderBase]: 903/1397 cut-off events. [2024-06-28 03:56:17,338 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-06-28 03:56:17,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2833 conditions, 1397 events. 903/1397 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 6526 event pairs, 574 based on Foata normal form. 1/1374 useless extension candidates. Maximal degree in co-relation 2821. Up to 1371 conditions per place. [2024-06-28 03:56:17,350 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 34 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-28 03:56:17,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 181 flow [2024-06-28 03:56:17,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:56:17,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:56:17,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-06-28 03:56:17,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5634920634920635 [2024-06-28 03:56:17,362 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 75 flow. Second operand 3 states and 71 transitions. [2024-06-28 03:56:17,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 181 flow [2024-06-28 03:56:17,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 176 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 03:56:17,367 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 102 flow [2024-06-28 03:56:17,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2024-06-28 03:56:17,372 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2024-06-28 03:56:17,372 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 102 flow [2024-06-28 03:56:17,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states 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 03:56:17,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:17,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:17,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:56:17,373 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:17,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:17,373 INFO L85 PathProgramCache]: Analyzing trace with hash -40909947, now seen corresponding path program 1 times [2024-06-28 03:56:17,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:17,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457742835] [2024-06-28 03:56:17,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:17,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:19,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:19,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:19,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457742835] [2024-06-28 03:56:19,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457742835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:19,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:19,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:56:19,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762213947] [2024-06-28 03:56:19,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:19,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:56:19,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:19,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:56:19,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:56:19,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:56:19,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:19,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:19,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:56:19,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:20,061 INFO L124 PetriNetUnfolderBase]: 1390/2109 cut-off events. [2024-06-28 03:56:20,062 INFO L125 PetriNetUnfolderBase]: For 367/369 co-relation queries the response was YES. [2024-06-28 03:56:20,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4851 conditions, 2109 events. 1390/2109 cut-off events. For 367/369 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9744 event pairs, 627 based on Foata normal form. 5/2114 useless extension candidates. Maximal degree in co-relation 4839. Up to 2045 conditions per place. [2024-06-28 03:56:20,074 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 49 selfloop transitions, 7 changer transitions 0/61 dead transitions. [2024-06-28 03:56:20,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 61 transitions, 280 flow [2024-06-28 03:56:20,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:56:20,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:56:20,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-06-28 03:56:20,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-28 03:56:20,077 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 102 flow. Second operand 4 states and 88 transitions. [2024-06-28 03:56:20,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 61 transitions, 280 flow [2024-06-28 03:56:20,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 61 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:56:20,079 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 154 flow [2024-06-28 03:56:20,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2024-06-28 03:56:20,080 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2024-06-28 03:56:20,080 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 154 flow [2024-06-28 03:56:20,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:20,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:20,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:20,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:56:20,081 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:20,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:20,082 INFO L85 PathProgramCache]: Analyzing trace with hash -356123518, now seen corresponding path program 1 times [2024-06-28 03:56:20,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:20,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239248505] [2024-06-28 03:56:20,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:20,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:22,315 INFO 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 03:56:22,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:22,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239248505] [2024-06-28 03:56:22,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239248505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:22,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:22,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:56:22,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189483421] [2024-06-28 03:56:22,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:22,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:56:22,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:22,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:56:22,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:56:22,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:56:22,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 154 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 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 03:56:22,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:22,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:56:22,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:22,982 INFO L124 PetriNetUnfolderBase]: 1381/2094 cut-off events. [2024-06-28 03:56:22,983 INFO L125 PetriNetUnfolderBase]: For 1029/1037 co-relation queries the response was YES. [2024-06-28 03:56:22,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5364 conditions, 2094 events. 1381/2094 cut-off events. For 1029/1037 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9672 event pairs, 458 based on Foata normal form. 14/2108 useless extension candidates. Maximal degree in co-relation 5349. Up to 1992 conditions per place. [2024-06-28 03:56:22,997 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 54 selfloop transitions, 9 changer transitions 0/68 dead transitions. [2024-06-28 03:56:22,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 68 transitions, 344 flow [2024-06-28 03:56:22,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:56:22,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:56:23,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2024-06-28 03:56:23,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49047619047619045 [2024-06-28 03:56:23,003 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 154 flow. Second operand 5 states and 103 transitions. [2024-06-28 03:56:23,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 68 transitions, 344 flow [2024-06-28 03:56:23,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 68 transitions, 342 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-28 03:56:23,007 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 185 flow [2024-06-28 03:56:23,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=185, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2024-06-28 03:56:23,009 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2024-06-28 03:56:23,009 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 185 flow [2024-06-28 03:56:23,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 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 03:56:23,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:23,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:23,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:56:23,010 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:23,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:23,011 INFO L85 PathProgramCache]: Analyzing trace with hash -978759166, now seen corresponding path program 1 times [2024-06-28 03:56:23,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:23,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114945603] [2024-06-28 03:56:23,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:23,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:25,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:25,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:25,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114945603] [2024-06-28 03:56:25,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114945603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:25,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:25,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:56:25,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652007655] [2024-06-28 03:56:25,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:25,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:56:25,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:25,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:56:25,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:56:25,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:56:25,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 185 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:25,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:25,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:56:25,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:25,996 INFO L124 PetriNetUnfolderBase]: 1075/1648 cut-off events. [2024-06-28 03:56:25,997 INFO L125 PetriNetUnfolderBase]: For 1591/1593 co-relation queries the response was YES. [2024-06-28 03:56:26,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4634 conditions, 1648 events. 1075/1648 cut-off events. For 1591/1593 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7756 event pairs, 487 based on Foata normal form. 4/1651 useless extension candidates. Maximal degree in co-relation 4615. Up to 1600 conditions per place. [2024-06-28 03:56:26,009 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 45 selfloop transitions, 10 changer transitions 0/60 dead transitions. [2024-06-28 03:56:26,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 60 transitions, 343 flow [2024-06-28 03:56:26,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:56:26,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:56:26,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2024-06-28 03:56:26,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 03:56:26,012 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 185 flow. Second operand 5 states and 90 transitions. [2024-06-28 03:56:26,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 60 transitions, 343 flow [2024-06-28 03:56:26,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 60 transitions, 322 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 03:56:26,016 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 212 flow [2024-06-28 03:56:26,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=212, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-06-28 03:56:26,018 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2024-06-28 03:56:26,018 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 212 flow [2024-06-28 03:56:26,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:26,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:26,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:26,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:56:26,020 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:26,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:26,021 INFO L85 PathProgramCache]: Analyzing trace with hash -240118320, now seen corresponding path program 1 times [2024-06-28 03:56:26,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:26,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174267801] [2024-06-28 03:56:26,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:26,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:28,800 INFO 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 03:56:28,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:28,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174267801] [2024-06-28 03:56:28,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174267801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:28,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:28,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:56:28,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417641508] [2024-06-28 03:56:28,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:28,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:56:28,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:28,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:56:28,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:56:28,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:56:28,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 212 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:28,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:28,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:56:28,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:29,578 INFO L124 PetriNetUnfolderBase]: 1070/1641 cut-off events. [2024-06-28 03:56:29,579 INFO L125 PetriNetUnfolderBase]: For 2390/2394 co-relation queries the response was YES. [2024-06-28 03:56:29,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5006 conditions, 1641 events. 1070/1641 cut-off events. For 2390/2394 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7729 event pairs, 469 based on Foata normal form. 6/1646 useless extension candidates. Maximal degree in co-relation 4985. Up to 1582 conditions per place. [2024-06-28 03:56:29,594 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 50 selfloop transitions, 13 changer transitions 0/68 dead transitions. [2024-06-28 03:56:29,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 68 transitions, 402 flow [2024-06-28 03:56:29,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:56:29,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:56:29,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-28 03:56:29,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2024-06-28 03:56:29,600 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 212 flow. Second operand 6 states and 106 transitions. [2024-06-28 03:56:29,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 68 transitions, 402 flow [2024-06-28 03:56:29,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 68 transitions, 378 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 03:56:29,610 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 246 flow [2024-06-28 03:56:29,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=246, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-06-28 03:56:29,613 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 13 predicate places. [2024-06-28 03:56:29,614 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 246 flow [2024-06-28 03:56:29,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:29,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:29,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:29,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:56:29,615 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:29,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:29,615 INFO L85 PathProgramCache]: Analyzing trace with hash 198504533, now seen corresponding path program 1 times [2024-06-28 03:56:29,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:29,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975738974] [2024-06-28 03:56:29,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:29,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:31,603 INFO 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 03:56:31,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:31,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975738974] [2024-06-28 03:56:31,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975738974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:31,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:31,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:56:31,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858972432] [2024-06-28 03:56:31,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:31,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:56:31,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:31,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:56:31,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:56:31,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:56:31,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 246 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:31,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:31,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:56:31,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:32,800 INFO L124 PetriNetUnfolderBase]: 1374/2093 cut-off events. [2024-06-28 03:56:32,800 INFO L125 PetriNetUnfolderBase]: For 4094/4116 co-relation queries the response was YES. [2024-06-28 03:56:32,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6717 conditions, 2093 events. 1374/2093 cut-off events. For 4094/4116 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9739 event pairs, 514 based on Foata normal form. 20/2113 useless extension candidates. Maximal degree in co-relation 6695. Up to 1969 conditions per place. [2024-06-28 03:56:32,816 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 61 selfloop transitions, 16 changer transitions 0/81 dead transitions. [2024-06-28 03:56:32,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 81 transitions, 522 flow [2024-06-28 03:56:32,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:56:32,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:56:32,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-28 03:56:32,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43253968253968256 [2024-06-28 03:56:32,818 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 246 flow. Second operand 6 states and 109 transitions. [2024-06-28 03:56:32,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 81 transitions, 522 flow [2024-06-28 03:56:32,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 81 transitions, 488 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 03:56:32,825 INFO L231 Difference]: Finished difference. Result has 58 places, 55 transitions, 298 flow [2024-06-28 03:56:32,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=298, PETRI_PLACES=58, PETRI_TRANSITIONS=55} [2024-06-28 03:56:32,828 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 15 predicate places. [2024-06-28 03:56:32,828 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 55 transitions, 298 flow [2024-06-28 03:56:32,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:32,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:32,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:32,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:56:32,829 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:32,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:32,829 INFO L85 PathProgramCache]: Analyzing trace with hash 235555733, now seen corresponding path program 2 times [2024-06-28 03:56:32,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:32,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293278680] [2024-06-28 03:56:32,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:32,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:34,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:34,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:34,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293278680] [2024-06-28 03:56:34,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293278680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:34,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:34,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:56:34,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057055046] [2024-06-28 03:56:34,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:34,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:56:34,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:34,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:56:34,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:56:34,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:56:34,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 55 transitions, 298 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:34,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:34,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:56:34,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:35,690 INFO L124 PetriNetUnfolderBase]: 1369/2086 cut-off events. [2024-06-28 03:56:35,691 INFO L125 PetriNetUnfolderBase]: For 5627/5651 co-relation queries the response was YES. [2024-06-28 03:56:35,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7138 conditions, 2086 events. 1369/2086 cut-off events. For 5627/5651 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9689 event pairs, 514 based on Foata normal form. 23/2109 useless extension candidates. Maximal degree in co-relation 7115. Up to 1975 conditions per place. [2024-06-28 03:56:35,709 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 57 selfloop transitions, 13 changer transitions 0/74 dead transitions. [2024-06-28 03:56:35,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 74 transitions, 484 flow [2024-06-28 03:56:35,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:56:35,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:56:35,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2024-06-28 03:56:35,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4380952380952381 [2024-06-28 03:56:35,712 INFO L175 Difference]: Start difference. First operand has 58 places, 55 transitions, 298 flow. Second operand 5 states and 92 transitions. [2024-06-28 03:56:35,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 74 transitions, 484 flow [2024-06-28 03:56:35,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 74 transitions, 452 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-28 03:56:35,719 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 304 flow [2024-06-28 03:56:35,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=304, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-06-28 03:56:35,720 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2024-06-28 03:56:35,720 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 304 flow [2024-06-28 03:56:35,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:35,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:35,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:35,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:56:35,721 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:35,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:35,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1146268527, now seen corresponding path program 1 times [2024-06-28 03:56:35,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:35,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959830384] [2024-06-28 03:56:35,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:35,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:35,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:39,084 INFO 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 03:56:39,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:39,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959830384] [2024-06-28 03:56:39,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959830384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:39,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:39,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:56:39,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782405570] [2024-06-28 03:56:39,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:39,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:56:39,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:39,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:56:39,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:56:39,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:56:39,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 304 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:39,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:39,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:56:39,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:39,836 INFO L124 PetriNetUnfolderBase]: 1070/1647 cut-off events. [2024-06-28 03:56:39,836 INFO L125 PetriNetUnfolderBase]: For 5806/5810 co-relation queries the response was YES. [2024-06-28 03:56:39,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6008 conditions, 1647 events. 1070/1647 cut-off events. For 5806/5810 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7802 event pairs, 432 based on Foata normal form. 8/1654 useless extension candidates. Maximal degree in co-relation 5983. Up to 1560 conditions per place. [2024-06-28 03:56:39,847 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 62 selfloop transitions, 15 changer transitions 0/82 dead transitions. [2024-06-28 03:56:39,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 82 transitions, 540 flow [2024-06-28 03:56:39,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:56:39,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:56:39,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 03:56:39,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41496598639455784 [2024-06-28 03:56:39,850 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 304 flow. Second operand 7 states and 122 transitions. [2024-06-28 03:56:39,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 82 transitions, 540 flow [2024-06-28 03:56:39,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 82 transitions, 514 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 03:56:39,856 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 341 flow [2024-06-28 03:56:39,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=341, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2024-06-28 03:56:39,856 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2024-06-28 03:56:39,857 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 341 flow [2024-06-28 03:56:39,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:39,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:39,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:39,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:56:39,858 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:39,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:39,858 INFO L85 PathProgramCache]: Analyzing trace with hash -739520470, now seen corresponding path program 1 times [2024-06-28 03:56:39,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:39,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69935789] [2024-06-28 03:56:39,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:39,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:39,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:42,148 INFO 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 03:56:42,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:42,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69935789] [2024-06-28 03:56:42,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69935789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:42,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:42,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:56:42,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293420974] [2024-06-28 03:56:42,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:42,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:56:42,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:42,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:56:42,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:56:42,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:56:42,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 341 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:42,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:42,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:56:42,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:43,117 INFO L124 PetriNetUnfolderBase]: 1366/2087 cut-off events. [2024-06-28 03:56:43,117 INFO L125 PetriNetUnfolderBase]: For 8479/8502 co-relation queries the response was YES. [2024-06-28 03:56:43,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7691 conditions, 2087 events. 1366/2087 cut-off events. For 8479/8502 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9667 event pairs, 488 based on Foata normal form. 23/2110 useless extension candidates. Maximal degree in co-relation 7665. Up to 1948 conditions per place. [2024-06-28 03:56:43,128 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 66 selfloop transitions, 19 changer transitions 0/89 dead transitions. [2024-06-28 03:56:43,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 89 transitions, 607 flow [2024-06-28 03:56:43,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:56:43,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:56:43,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 03:56:43,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41496598639455784 [2024-06-28 03:56:43,130 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 341 flow. Second operand 7 states and 122 transitions. [2024-06-28 03:56:43,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 89 transitions, 607 flow [2024-06-28 03:56:43,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 89 transitions, 562 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 03:56:43,137 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 374 flow [2024-06-28 03:56:43,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=374, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2024-06-28 03:56:43,138 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 23 predicate places. [2024-06-28 03:56:43,138 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 374 flow [2024-06-28 03:56:43,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:43,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:43,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:43,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:56:43,139 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:43,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:43,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1287699496, now seen corresponding path program 2 times [2024-06-28 03:56:43,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:43,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437787019] [2024-06-28 03:56:43,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:43,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:45,569 INFO 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 03:56:45,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:45,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437787019] [2024-06-28 03:56:45,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437787019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:45,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:45,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:56:45,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594072183] [2024-06-28 03:56:45,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:45,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:56:45,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:45,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:56:45,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:56:45,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:56:45,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 374 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:45,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:45,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:56:45,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:46,734 INFO L124 PetriNetUnfolderBase]: 1460/2231 cut-off events. [2024-06-28 03:56:46,734 INFO L125 PetriNetUnfolderBase]: For 10841/10845 co-relation queries the response was YES. [2024-06-28 03:56:46,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8725 conditions, 2231 events. 1460/2231 cut-off events. For 10841/10845 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 10335 event pairs, 468 based on Foata normal form. 6/2237 useless extension candidates. Maximal degree in co-relation 8698. Up to 2071 conditions per place. [2024-06-28 03:56:46,750 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 95 selfloop transitions, 34 changer transitions 0/133 dead transitions. [2024-06-28 03:56:46,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 133 transitions, 1003 flow [2024-06-28 03:56:46,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:56:46,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:56:46,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-28 03:56:46,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2024-06-28 03:56:46,752 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 374 flow. Second operand 10 states and 172 transitions. [2024-06-28 03:56:46,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 133 transitions, 1003 flow [2024-06-28 03:56:46,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 133 transitions, 921 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 03:56:46,760 INFO L231 Difference]: Finished difference. Result has 76 places, 87 transitions, 647 flow [2024-06-28 03:56:46,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=647, PETRI_PLACES=76, PETRI_TRANSITIONS=87} [2024-06-28 03:56:46,761 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 33 predicate places. [2024-06-28 03:56:46,761 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 87 transitions, 647 flow [2024-06-28 03:56:46,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:46,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:46,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:46,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:56:46,762 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:46,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:46,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1166953578, now seen corresponding path program 3 times [2024-06-28 03:56:46,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:46,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790242992] [2024-06-28 03:56:46,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:46,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:49,024 INFO 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 03:56:49,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:49,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790242992] [2024-06-28 03:56:49,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790242992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:49,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:49,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:56:49,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306122933] [2024-06-28 03:56:49,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:49,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:56:49,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:49,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:56:49,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:56:49,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:56:49,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 87 transitions, 647 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:49,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:49,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:56:49,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:49,943 INFO L124 PetriNetUnfolderBase]: 1468/2253 cut-off events. [2024-06-28 03:56:49,943 INFO L125 PetriNetUnfolderBase]: For 13953/13994 co-relation queries the response was YES. [2024-06-28 03:56:49,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9553 conditions, 2253 events. 1468/2253 cut-off events. For 13953/13994 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 10569 event pairs, 489 based on Foata normal form. 40/2293 useless extension candidates. Maximal degree in co-relation 9520. Up to 2054 conditions per place. [2024-06-28 03:56:49,960 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 76 selfloop transitions, 33 changer transitions 0/113 dead transitions. [2024-06-28 03:56:49,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 113 transitions, 969 flow [2024-06-28 03:56:49,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:56:49,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:56:49,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-28 03:56:49,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246031746031746 [2024-06-28 03:56:49,963 INFO L175 Difference]: Start difference. First operand has 76 places, 87 transitions, 647 flow. Second operand 6 states and 107 transitions. [2024-06-28 03:56:49,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 113 transitions, 969 flow [2024-06-28 03:56:49,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 113 transitions, 894 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-06-28 03:56:49,980 INFO L231 Difference]: Finished difference. Result has 80 places, 90 transitions, 694 flow [2024-06-28 03:56:49,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=694, PETRI_PLACES=80, PETRI_TRANSITIONS=90} [2024-06-28 03:56:49,981 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 37 predicate places. [2024-06-28 03:56:49,981 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 90 transitions, 694 flow [2024-06-28 03:56:49,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:49,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:49,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:49,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:56:49,982 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:49,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:49,982 INFO L85 PathProgramCache]: Analyzing trace with hash -553284456, now seen corresponding path program 4 times [2024-06-28 03:56:49,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:49,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183880568] [2024-06-28 03:56:49,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:49,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:52,289 INFO 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 03:56:52,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:52,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183880568] [2024-06-28 03:56:52,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183880568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:52,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:52,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:56:52,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455538191] [2024-06-28 03:56:52,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:52,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:56:52,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:52,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:56:52,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:56:52,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:56:52,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 90 transitions, 694 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:52,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:52,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:56:52,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:53,182 INFO L124 PetriNetUnfolderBase]: 1463/2246 cut-off events. [2024-06-28 03:56:53,183 INFO L125 PetriNetUnfolderBase]: For 16596/16632 co-relation queries the response was YES. [2024-06-28 03:56:53,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10004 conditions, 2246 events. 1463/2246 cut-off events. For 16596/16632 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 10581 event pairs, 489 based on Foata normal form. 35/2281 useless extension candidates. Maximal degree in co-relation 9969. Up to 1982 conditions per place. [2024-06-28 03:56:53,200 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 73 selfloop transitions, 45 changer transitions 0/122 dead transitions. [2024-06-28 03:56:53,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 122 transitions, 1058 flow [2024-06-28 03:56:53,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:56:53,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:56:53,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-28 03:56:53,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4217687074829932 [2024-06-28 03:56:53,203 INFO L175 Difference]: Start difference. First operand has 80 places, 90 transitions, 694 flow. Second operand 7 states and 124 transitions. [2024-06-28 03:56:53,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 122 transitions, 1058 flow [2024-06-28 03:56:53,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 122 transitions, 970 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-28 03:56:53,222 INFO L231 Difference]: Finished difference. Result has 83 places, 93 transitions, 758 flow [2024-06-28 03:56:53,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=758, PETRI_PLACES=83, PETRI_TRANSITIONS=93} [2024-06-28 03:56:53,223 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2024-06-28 03:56:53,223 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 93 transitions, 758 flow [2024-06-28 03:56:53,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:53,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:53,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:53,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:56:53,224 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:53,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:53,224 INFO L85 PathProgramCache]: Analyzing trace with hash -32729889, now seen corresponding path program 1 times [2024-06-28 03:56:53,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:53,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947019370] [2024-06-28 03:56:53,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:53,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:53,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:55,413 INFO 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 03:56:55,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:55,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947019370] [2024-06-28 03:56:55,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947019370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:55,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:55,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:56:55,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477346447] [2024-06-28 03:56:55,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:55,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:56:55,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:55,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:56:55,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:56:55,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:56:55,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 93 transitions, 758 flow. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:55,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:55,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:56:55,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:56,200 INFO L124 PetriNetUnfolderBase]: 1245/1991 cut-off events. [2024-06-28 03:56:56,201 INFO L125 PetriNetUnfolderBase]: For 19255/19263 co-relation queries the response was YES. [2024-06-28 03:56:56,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9543 conditions, 1991 events. 1245/1991 cut-off events. For 19255/19263 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 9388 event pairs, 453 based on Foata normal form. 10/1979 useless extension candidates. Maximal degree in co-relation 9507. Up to 1864 conditions per place. [2024-06-28 03:56:56,216 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 74 selfloop transitions, 21 changer transitions 0/106 dead transitions. [2024-06-28 03:56:56,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 106 transitions, 994 flow [2024-06-28 03:56:56,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:56:56,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:56:56,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-06-28 03:56:56,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-06-28 03:56:56,219 INFO L175 Difference]: Start difference. First operand has 83 places, 93 transitions, 758 flow. Second operand 5 states and 88 transitions. [2024-06-28 03:56:56,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 106 transitions, 994 flow [2024-06-28 03:56:56,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 106 transitions, 872 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 03:56:56,240 INFO L231 Difference]: Finished difference. Result has 82 places, 96 transitions, 714 flow [2024-06-28 03:56:56,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=714, PETRI_PLACES=82, PETRI_TRANSITIONS=96} [2024-06-28 03:56:56,241 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 39 predicate places. [2024-06-28 03:56:56,241 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 96 transitions, 714 flow [2024-06-28 03:56:56,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:56,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:56,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:56,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:56:56,242 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:56,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:56,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1768497344, now seen corresponding path program 1 times [2024-06-28 03:56:56,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:56,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115648439] [2024-06-28 03:56:56,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:56,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:58,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:58,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:58,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115648439] [2024-06-28 03:56:58,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115648439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:58,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:58,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:56:58,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505261651] [2024-06-28 03:56:58,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:58,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:56:58,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:58,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:56:58,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:56:58,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:56:58,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 96 transitions, 714 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:58,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:58,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:56:58,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:59,618 INFO L124 PetriNetUnfolderBase]: 1471/2262 cut-off events. [2024-06-28 03:56:59,619 INFO L125 PetriNetUnfolderBase]: For 19249/19286 co-relation queries the response was YES. [2024-06-28 03:56:59,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10593 conditions, 2262 events. 1471/2262 cut-off events. For 19249/19286 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 10676 event pairs, 321 based on Foata normal form. 37/2299 useless extension candidates. Maximal degree in co-relation 10557. Up to 1968 conditions per place. [2024-06-28 03:56:59,637 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 93 selfloop transitions, 35 changer transitions 0/132 dead transitions. [2024-06-28 03:56:59,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 132 transitions, 1168 flow [2024-06-28 03:56:59,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:56:59,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:56:59,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-28 03:56:59,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42517006802721086 [2024-06-28 03:56:59,640 INFO L175 Difference]: Start difference. First operand has 82 places, 96 transitions, 714 flow. Second operand 7 states and 125 transitions. [2024-06-28 03:56:59,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 132 transitions, 1168 flow [2024-06-28 03:56:59,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 132 transitions, 1124 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 03:56:59,662 INFO L231 Difference]: Finished difference. Result has 86 places, 100 transitions, 815 flow [2024-06-28 03:56:59,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=815, PETRI_PLACES=86, PETRI_TRANSITIONS=100} [2024-06-28 03:56:59,663 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 43 predicate places. [2024-06-28 03:56:59,663 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 100 transitions, 815 flow [2024-06-28 03:56:59,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:59,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:59,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:59,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:56:59,664 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:59,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:59,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1218589900, now seen corresponding path program 2 times [2024-06-28 03:56:59,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:59,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020935649] [2024-06-28 03:56:59,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:59,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:01,861 INFO 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 03:57:01,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:01,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020935649] [2024-06-28 03:57:01,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020935649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:01,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:01,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:57:01,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388310301] [2024-06-28 03:57:01,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:01,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:57:01,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:01,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:57:01,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:57:01,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:57:01,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 100 transitions, 815 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:01,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:01,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:57:01,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:02,976 INFO L124 PetriNetUnfolderBase]: 1491/2294 cut-off events. [2024-06-28 03:57:02,977 INFO L125 PetriNetUnfolderBase]: For 22236/22273 co-relation queries the response was YES. [2024-06-28 03:57:02,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11132 conditions, 2294 events. 1491/2294 cut-off events. For 22236/22273 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 10893 event pairs, 449 based on Foata normal form. 37/2331 useless extension candidates. Maximal degree in co-relation 11095. Up to 2084 conditions per place. [2024-06-28 03:57:02,992 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 95 selfloop transitions, 32 changer transitions 0/131 dead transitions. [2024-06-28 03:57:02,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 131 transitions, 1187 flow [2024-06-28 03:57:02,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:57:02,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:57:02,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 03:57:02,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41496598639455784 [2024-06-28 03:57:02,995 INFO L175 Difference]: Start difference. First operand has 86 places, 100 transitions, 815 flow. Second operand 7 states and 122 transitions. [2024-06-28 03:57:02,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 131 transitions, 1187 flow [2024-06-28 03:57:03,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 131 transitions, 1112 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-28 03:57:03,022 INFO L231 Difference]: Finished difference. Result has 90 places, 102 transitions, 851 flow [2024-06-28 03:57:03,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=851, PETRI_PLACES=90, PETRI_TRANSITIONS=102} [2024-06-28 03:57:03,022 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 47 predicate places. [2024-06-28 03:57:03,022 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 102 transitions, 851 flow [2024-06-28 03:57:03,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:03,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:03,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:03,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:57:03,023 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:03,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:03,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1218584940, now seen corresponding path program 1 times [2024-06-28 03:57:03,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:03,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518504700] [2024-06-28 03:57:03,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:03,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:05,553 INFO 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 03:57:05,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:05,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518504700] [2024-06-28 03:57:05,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518504700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:05,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:05,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:57:05,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880499447] [2024-06-28 03:57:05,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:05,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:57:05,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:05,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:57:05,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:57:05,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:57:05,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 102 transitions, 851 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:05,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:05,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:57:05,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:06,541 INFO L124 PetriNetUnfolderBase]: 1504/2319 cut-off events. [2024-06-28 03:57:06,541 INFO L125 PetriNetUnfolderBase]: For 24560/24597 co-relation queries the response was YES. [2024-06-28 03:57:06,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11441 conditions, 2319 events. 1504/2319 cut-off events. For 24560/24597 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 11038 event pairs, 431 based on Foata normal form. 35/2354 useless extension candidates. Maximal degree in co-relation 11402. Up to 2103 conditions per place. [2024-06-28 03:57:06,556 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 98 selfloop transitions, 36 changer transitions 0/138 dead transitions. [2024-06-28 03:57:06,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 138 transitions, 1257 flow [2024-06-28 03:57:06,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:57:06,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:57:06,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 03:57:06,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40773809523809523 [2024-06-28 03:57:06,558 INFO L175 Difference]: Start difference. First operand has 90 places, 102 transitions, 851 flow. Second operand 8 states and 137 transitions. [2024-06-28 03:57:06,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 138 transitions, 1257 flow [2024-06-28 03:57:06,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 138 transitions, 1174 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 03:57:06,585 INFO L231 Difference]: Finished difference. Result has 93 places, 105 transitions, 898 flow [2024-06-28 03:57:06,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=898, PETRI_PLACES=93, PETRI_TRANSITIONS=105} [2024-06-28 03:57:06,586 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 50 predicate places. [2024-06-28 03:57:06,586 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 105 transitions, 898 flow [2024-06-28 03:57:06,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:06,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:06,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:06,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:57:06,587 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:06,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:06,588 INFO L85 PathProgramCache]: Analyzing trace with hash 27874932, now seen corresponding path program 3 times [2024-06-28 03:57:06,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:06,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784686932] [2024-06-28 03:57:06,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:06,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:08,890 INFO 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 03:57:08,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:08,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784686932] [2024-06-28 03:57:08,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784686932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:08,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:08,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:57:08,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380831698] [2024-06-28 03:57:08,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:08,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:57:08,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:08,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:57:08,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:57:08,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:57:08,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 105 transitions, 898 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:08,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:08,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:57:08,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:09,870 INFO L124 PetriNetUnfolderBase]: 1496/2307 cut-off events. [2024-06-28 03:57:09,870 INFO L125 PetriNetUnfolderBase]: For 27314/27351 co-relation queries the response was YES. [2024-06-28 03:57:09,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11712 conditions, 2307 events. 1496/2307 cut-off events. For 27314/27351 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 10930 event pairs, 301 based on Foata normal form. 37/2344 useless extension candidates. Maximal degree in co-relation 11672. Up to 2058 conditions per place. [2024-06-28 03:57:09,884 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 94 selfloop transitions, 31 changer transitions 0/129 dead transitions. [2024-06-28 03:57:09,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 129 transitions, 1216 flow [2024-06-28 03:57:09,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:57:09,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:57:09,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-06-28 03:57:09,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 03:57:09,887 INFO L175 Difference]: Start difference. First operand has 93 places, 105 transitions, 898 flow. Second operand 6 states and 108 transitions. [2024-06-28 03:57:09,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 129 transitions, 1216 flow [2024-06-28 03:57:09,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 129 transitions, 1090 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 03:57:09,915 INFO L231 Difference]: Finished difference. Result has 93 places, 105 transitions, 845 flow [2024-06-28 03:57:09,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=845, PETRI_PLACES=93, PETRI_TRANSITIONS=105} [2024-06-28 03:57:09,915 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 50 predicate places. [2024-06-28 03:57:09,916 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 105 transitions, 845 flow [2024-06-28 03:57:09,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:09,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:09,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:09,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:57:09,916 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:09,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:09,917 INFO L85 PathProgramCache]: Analyzing trace with hash 28059382, now seen corresponding path program 2 times [2024-06-28 03:57:09,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:09,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169100785] [2024-06-28 03:57:09,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:09,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:09,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:12,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:12,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:12,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169100785] [2024-06-28 03:57:12,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169100785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:12,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:12,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:57:12,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802028626] [2024-06-28 03:57:12,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:12,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:57:12,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:12,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:57:12,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:57:12,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:57:12,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 105 transitions, 845 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:12,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:12,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:57:12,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:13,495 INFO L124 PetriNetUnfolderBase]: 1509/2326 cut-off events. [2024-06-28 03:57:13,495 INFO L125 PetriNetUnfolderBase]: For 29979/30016 co-relation queries the response was YES. [2024-06-28 03:57:13,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11908 conditions, 2326 events. 1509/2326 cut-off events. For 29979/30016 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 11099 event pairs, 429 based on Foata normal form. 35/2361 useless extension candidates. Maximal degree in co-relation 11867. Up to 1980 conditions per place. [2024-06-28 03:57:13,507 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 92 selfloop transitions, 52 changer transitions 0/148 dead transitions. [2024-06-28 03:57:13,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 148 transitions, 1401 flow [2024-06-28 03:57:13,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:57:13,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:57:13,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 03:57:13,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4255952380952381 [2024-06-28 03:57:13,510 INFO L175 Difference]: Start difference. First operand has 93 places, 105 transitions, 845 flow. Second operand 8 states and 143 transitions. [2024-06-28 03:57:13,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 148 transitions, 1401 flow [2024-06-28 03:57:13,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 148 transitions, 1332 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 03:57:13,532 INFO L231 Difference]: Finished difference. Result has 96 places, 111 transitions, 994 flow [2024-06-28 03:57:13,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=994, PETRI_PLACES=96, PETRI_TRANSITIONS=111} [2024-06-28 03:57:13,532 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 53 predicate places. [2024-06-28 03:57:13,533 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 111 transitions, 994 flow [2024-06-28 03:57:13,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:13,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:13,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:13,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:57:13,533 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:13,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:13,534 INFO L85 PathProgramCache]: Analyzing trace with hash 27879892, now seen corresponding path program 3 times [2024-06-28 03:57:13,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:13,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623556324] [2024-06-28 03:57:13,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:13,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:16,396 INFO 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 03:57:16,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:16,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623556324] [2024-06-28 03:57:16,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623556324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:16,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:16,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:57:16,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704365861] [2024-06-28 03:57:16,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:16,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:57:16,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:16,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:57:16,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:57:16,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:57:16,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 111 transitions, 994 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:16,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:16,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:57:16,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:17,349 INFO L124 PetriNetUnfolderBase]: 1522/2345 cut-off events. [2024-06-28 03:57:17,350 INFO L125 PetriNetUnfolderBase]: For 34080/34109 co-relation queries the response was YES. [2024-06-28 03:57:17,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12534 conditions, 2345 events. 1522/2345 cut-off events. For 34080/34109 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 11191 event pairs, 429 based on Foata normal form. 30/2375 useless extension candidates. Maximal degree in co-relation 12492. Up to 2123 conditions per place. [2024-06-28 03:57:17,362 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 102 selfloop transitions, 36 changer transitions 0/142 dead transitions. [2024-06-28 03:57:17,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 142 transitions, 1406 flow [2024-06-28 03:57:17,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:57:17,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:57:17,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 03:57:17,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41496598639455784 [2024-06-28 03:57:17,363 INFO L175 Difference]: Start difference. First operand has 96 places, 111 transitions, 994 flow. Second operand 7 states and 122 transitions. [2024-06-28 03:57:17,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 142 transitions, 1406 flow [2024-06-28 03:57:17,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 142 transitions, 1287 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-28 03:57:17,384 INFO L231 Difference]: Finished difference. Result has 99 places, 114 transitions, 1018 flow [2024-06-28 03:57:17,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=885, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1018, PETRI_PLACES=99, PETRI_TRANSITIONS=114} [2024-06-28 03:57:17,385 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 56 predicate places. [2024-06-28 03:57:17,385 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 114 transitions, 1018 flow [2024-06-28 03:57:17,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:17,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:17,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:17,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:57:17,386 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:17,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:17,386 INFO L85 PathProgramCache]: Analyzing trace with hash 28052872, now seen corresponding path program 4 times [2024-06-28 03:57:17,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:17,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643610983] [2024-06-28 03:57:17,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:17,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:19,909 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 03:57:19,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:19,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643610983] [2024-06-28 03:57:19,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643610983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:19,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:19,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:57:19,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989723869] [2024-06-28 03:57:19,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:19,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:57:19,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:19,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:57:19,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:57:19,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:57:19,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 114 transitions, 1018 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:19,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:19,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:57:19,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:20,849 INFO L124 PetriNetUnfolderBase]: 1517/2338 cut-off events. [2024-06-28 03:57:20,849 INFO L125 PetriNetUnfolderBase]: For 36113/36142 co-relation queries the response was YES. [2024-06-28 03:57:20,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12621 conditions, 2338 events. 1517/2338 cut-off events. For 36113/36142 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 11134 event pairs, 429 based on Foata normal form. 30/2368 useless extension candidates. Maximal degree in co-relation 12577. Up to 2051 conditions per place. [2024-06-28 03:57:20,863 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 96 selfloop transitions, 48 changer transitions 0/148 dead transitions. [2024-06-28 03:57:20,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 148 transitions, 1404 flow [2024-06-28 03:57:20,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:57:20,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:57:20,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 03:57:20,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41369047619047616 [2024-06-28 03:57:20,865 INFO L175 Difference]: Start difference. First operand has 99 places, 114 transitions, 1018 flow. Second operand 8 states and 139 transitions. [2024-06-28 03:57:20,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 148 transitions, 1404 flow [2024-06-28 03:57:20,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 148 transitions, 1273 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-28 03:57:20,897 INFO L231 Difference]: Finished difference. Result has 102 places, 114 transitions, 992 flow [2024-06-28 03:57:20,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=992, PETRI_PLACES=102, PETRI_TRANSITIONS=114} [2024-06-28 03:57:20,897 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 59 predicate places. [2024-06-28 03:57:20,897 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 114 transitions, 992 flow [2024-06-28 03:57:20,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:20,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:20,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:20,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:57:20,898 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:20,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:20,899 INFO L85 PathProgramCache]: Analyzing trace with hash -984238240, now seen corresponding path program 1 times [2024-06-28 03:57:20,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:20,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682374942] [2024-06-28 03:57:20,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:20,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:20,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:23,179 INFO 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 03:57:23,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:23,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682374942] [2024-06-28 03:57:23,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682374942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:23,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:23,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:57:23,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866045637] [2024-06-28 03:57:23,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:23,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:57:23,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:23,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:57:23,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:57:23,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:57:23,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 114 transitions, 992 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:23,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:23,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:57:23,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:24,123 INFO L124 PetriNetUnfolderBase]: 1416/2204 cut-off events. [2024-06-28 03:57:24,123 INFO L125 PetriNetUnfolderBase]: For 37632/37646 co-relation queries the response was YES. [2024-06-28 03:57:24,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12180 conditions, 2204 events. 1416/2204 cut-off events. For 37632/37646 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 10551 event pairs, 409 based on Foata normal form. 15/2205 useless extension candidates. Maximal degree in co-relation 12135. Up to 2094 conditions per place. [2024-06-28 03:57:24,135 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 111 selfloop transitions, 12 changer transitions 0/132 dead transitions. [2024-06-28 03:57:24,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 132 transitions, 1298 flow [2024-06-28 03:57:24,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:57:24,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:57:24,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-06-28 03:57:24,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38492063492063494 [2024-06-28 03:57:24,137 INFO L175 Difference]: Start difference. First operand has 102 places, 114 transitions, 992 flow. Second operand 6 states and 97 transitions. [2024-06-28 03:57:24,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 132 transitions, 1298 flow [2024-06-28 03:57:24,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 132 transitions, 1182 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 03:57:24,161 INFO L231 Difference]: Finished difference. Result has 102 places, 120 transitions, 949 flow [2024-06-28 03:57:24,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=949, PETRI_PLACES=102, PETRI_TRANSITIONS=120} [2024-06-28 03:57:24,162 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 59 predicate places. [2024-06-28 03:57:24,162 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 120 transitions, 949 flow [2024-06-28 03:57:24,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:24,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:24,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:24,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:57:24,162 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:24,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:24,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1590116003, now seen corresponding path program 1 times [2024-06-28 03:57:24,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:24,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149914401] [2024-06-28 03:57:24,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:24,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:26,462 INFO 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 03:57:26,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:26,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149914401] [2024-06-28 03:57:26,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149914401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:26,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:26,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:57:26,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453273678] [2024-06-28 03:57:26,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:26,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:57:26,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:26,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:57:26,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:57:26,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:57:26,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 120 transitions, 949 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:26,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:26,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:57:26,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:27,521 INFO L124 PetriNetUnfolderBase]: 1525/2354 cut-off events. [2024-06-28 03:57:27,521 INFO L125 PetriNetUnfolderBase]: For 40351/40380 co-relation queries the response was YES. [2024-06-28 03:57:27,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13031 conditions, 2354 events. 1525/2354 cut-off events. For 40351/40380 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 11224 event pairs, 261 based on Foata normal form. 32/2386 useless extension candidates. Maximal degree in co-relation 12984. Up to 2016 conditions per place. [2024-06-28 03:57:27,535 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 115 selfloop transitions, 39 changer transitions 0/158 dead transitions. [2024-06-28 03:57:27,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 158 transitions, 1399 flow [2024-06-28 03:57:27,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:57:27,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:57:27,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 03:57:27,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-28 03:57:27,537 INFO L175 Difference]: Start difference. First operand has 102 places, 120 transitions, 949 flow. Second operand 8 states and 138 transitions. [2024-06-28 03:57:27,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 158 transitions, 1399 flow [2024-06-28 03:57:27,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 158 transitions, 1373 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 03:57:27,558 INFO L231 Difference]: Finished difference. Result has 107 places, 122 transitions, 1054 flow [2024-06-28 03:57:27,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=923, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1054, PETRI_PLACES=107, PETRI_TRANSITIONS=122} [2024-06-28 03:57:27,558 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 64 predicate places. [2024-06-28 03:57:27,558 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 122 transitions, 1054 flow [2024-06-28 03:57:27,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:27,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:27,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:27,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:57:27,559 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:27,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:27,559 INFO L85 PathProgramCache]: Analyzing trace with hash 878568427, now seen corresponding path program 2 times [2024-06-28 03:57:27,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:27,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741277314] [2024-06-28 03:57:27,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:27,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:29,892 INFO 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 03:57:29,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:29,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741277314] [2024-06-28 03:57:29,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741277314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:29,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:29,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:57:29,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027424269] [2024-06-28 03:57:29,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:29,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:57:29,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:29,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:57:29,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:57:29,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:57:29,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 122 transitions, 1054 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:29,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:29,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:57:29,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:30,950 INFO L124 PetriNetUnfolderBase]: 1545/2386 cut-off events. [2024-06-28 03:57:30,950 INFO L125 PetriNetUnfolderBase]: For 44903/44932 co-relation queries the response was YES. [2024-06-28 03:57:30,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13587 conditions, 2386 events. 1545/2386 cut-off events. For 44903/44932 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 11395 event pairs, 395 based on Foata normal form. 32/2418 useless extension candidates. Maximal degree in co-relation 13539. Up to 2159 conditions per place. [2024-06-28 03:57:30,964 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 119 selfloop transitions, 35 changer transitions 0/158 dead transitions. [2024-06-28 03:57:30,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 158 transitions, 1504 flow [2024-06-28 03:57:30,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:57:30,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:57:30,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 03:57:30,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40773809523809523 [2024-06-28 03:57:30,966 INFO L175 Difference]: Start difference. First operand has 107 places, 122 transitions, 1054 flow. Second operand 8 states and 137 transitions. [2024-06-28 03:57:30,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 158 transitions, 1504 flow [2024-06-28 03:57:30,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 158 transitions, 1391 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 03:57:30,994 INFO L231 Difference]: Finished difference. Result has 109 places, 124 transitions, 1068 flow [2024-06-28 03:57:30,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=941, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1068, PETRI_PLACES=109, PETRI_TRANSITIONS=124} [2024-06-28 03:57:30,994 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 66 predicate places. [2024-06-28 03:57:30,994 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 124 transitions, 1068 flow [2024-06-28 03:57:30,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:30,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:30,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:30,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:57:30,995 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:30,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:30,996 INFO L85 PathProgramCache]: Analyzing trace with hash -274525873, now seen corresponding path program 3 times [2024-06-28 03:57:30,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:30,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315497626] [2024-06-28 03:57:30,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:30,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:33,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:33,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:33,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315497626] [2024-06-28 03:57:33,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315497626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:33,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:33,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:57:33,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185377705] [2024-06-28 03:57:33,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:33,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:57:33,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:33,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:57:33,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:57:33,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:57:33,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 124 transitions, 1068 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:33,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:33,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:57:33,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:34,566 INFO L124 PetriNetUnfolderBase]: 1640/2536 cut-off events. [2024-06-28 03:57:34,566 INFO L125 PetriNetUnfolderBase]: For 50492/50506 co-relation queries the response was YES. [2024-06-28 03:57:34,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14604 conditions, 2536 events. 1640/2536 cut-off events. For 50492/50506 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 12318 event pairs, 394 based on Foata normal form. 13/2549 useless extension candidates. Maximal degree in co-relation 14555. Up to 2248 conditions per place. [2024-06-28 03:57:34,582 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 133 selfloop transitions, 49 changer transitions 0/186 dead transitions. [2024-06-28 03:57:34,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 186 transitions, 1819 flow [2024-06-28 03:57:34,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:57:34,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:57:34,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 03:57:34,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3904761904761905 [2024-06-28 03:57:34,584 INFO L175 Difference]: Start difference. First operand has 109 places, 124 transitions, 1068 flow. Second operand 10 states and 164 transitions. [2024-06-28 03:57:34,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 186 transitions, 1819 flow [2024-06-28 03:57:34,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 186 transitions, 1678 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 03:57:34,623 INFO L231 Difference]: Finished difference. Result has 118 places, 146 transitions, 1372 flow [2024-06-28 03:57:34,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=959, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1372, PETRI_PLACES=118, PETRI_TRANSITIONS=146} [2024-06-28 03:57:34,624 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 75 predicate places. [2024-06-28 03:57:34,624 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 146 transitions, 1372 flow [2024-06-28 03:57:34,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:34,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:34,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:34,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:57:34,625 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:34,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:34,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1372910769, now seen corresponding path program 4 times [2024-06-28 03:57:34,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:34,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000176191] [2024-06-28 03:57:34,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:34,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:36,446 INFO 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 03:57:36,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:36,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000176191] [2024-06-28 03:57:36,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000176191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:36,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:36,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:57:36,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474376362] [2024-06-28 03:57:36,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:36,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:57:36,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:36,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:57:36,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:57:36,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:57:36,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 146 transitions, 1372 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:36,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:36,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:57:36,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:37,583 INFO L124 PetriNetUnfolderBase]: 1790/2777 cut-off events. [2024-06-28 03:57:37,584 INFO L125 PetriNetUnfolderBase]: For 56665/56682 co-relation queries the response was YES. [2024-06-28 03:57:37,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16496 conditions, 2777 events. 1790/2777 cut-off events. For 56665/56682 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 13906 event pairs, 492 based on Foata normal form. 21/2798 useless extension candidates. Maximal degree in co-relation 16441. Up to 2404 conditions per place. [2024-06-28 03:57:37,603 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 144 selfloop transitions, 80 changer transitions 0/228 dead transitions. [2024-06-28 03:57:37,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 228 transitions, 2391 flow [2024-06-28 03:57:37,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:57:37,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:57:37,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-28 03:57:37,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4142857142857143 [2024-06-28 03:57:37,605 INFO L175 Difference]: Start difference. First operand has 118 places, 146 transitions, 1372 flow. Second operand 10 states and 174 transitions. [2024-06-28 03:57:37,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 228 transitions, 2391 flow [2024-06-28 03:57:37,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 228 transitions, 2201 flow, removed 46 selfloop flow, removed 3 redundant places. [2024-06-28 03:57:37,661 INFO L231 Difference]: Finished difference. Result has 128 places, 180 transitions, 1868 flow [2024-06-28 03:57:37,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1263, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1868, PETRI_PLACES=128, PETRI_TRANSITIONS=180} [2024-06-28 03:57:37,662 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 85 predicate places. [2024-06-28 03:57:37,662 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 180 transitions, 1868 flow [2024-06-28 03:57:37,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:37,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:37,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:37,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:57:37,663 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:37,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:37,664 INFO L85 PathProgramCache]: Analyzing trace with hash 556441441, now seen corresponding path program 1 times [2024-06-28 03:57:37,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:37,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195681662] [2024-06-28 03:57:37,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:37,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:40,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:40,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:40,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195681662] [2024-06-28 03:57:40,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195681662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:40,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:40,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:57:40,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569197023] [2024-06-28 03:57:40,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:40,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:57:40,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:40,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:57:40,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:57:40,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:57:40,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 180 transitions, 1868 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:40,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:40,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:57:40,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:41,339 INFO L124 PetriNetUnfolderBase]: 1884/2931 cut-off events. [2024-06-28 03:57:41,339 INFO L125 PetriNetUnfolderBase]: For 67040/67057 co-relation queries the response was YES. [2024-06-28 03:57:41,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17723 conditions, 2931 events. 1884/2931 cut-off events. For 67040/67057 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 14867 event pairs, 509 based on Foata normal form. 33/2964 useless extension candidates. Maximal degree in co-relation 17663. Up to 2502 conditions per place. [2024-06-28 03:57:41,361 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 159 selfloop transitions, 79 changer transitions 0/242 dead transitions. [2024-06-28 03:57:41,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 242 transitions, 2599 flow [2024-06-28 03:57:41,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:57:41,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:57:41,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-28 03:57:41,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4134199134199134 [2024-06-28 03:57:41,363 INFO L175 Difference]: Start difference. First operand has 128 places, 180 transitions, 1868 flow. Second operand 11 states and 191 transitions. [2024-06-28 03:57:41,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 242 transitions, 2599 flow [2024-06-28 03:57:41,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 242 transitions, 2459 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-28 03:57:41,427 INFO L231 Difference]: Finished difference. Result has 137 places, 187 transitions, 1982 flow [2024-06-28 03:57:41,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1728, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1982, PETRI_PLACES=137, PETRI_TRANSITIONS=187} [2024-06-28 03:57:41,428 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 94 predicate places. [2024-06-28 03:57:41,428 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 187 transitions, 1982 flow [2024-06-28 03:57:41,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:41,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:41,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:41,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:57:41,428 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:41,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:41,429 INFO L85 PathProgramCache]: Analyzing trace with hash -167420649, now seen corresponding path program 5 times [2024-06-28 03:57:41,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:41,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819284464] [2024-06-28 03:57:41,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:41,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:43,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:43,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:43,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819284464] [2024-06-28 03:57:43,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819284464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:43,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:43,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:57:43,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548914371] [2024-06-28 03:57:43,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:43,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:57:43,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:43,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:57:43,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:57:43,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:57:43,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 187 transitions, 1982 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:43,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:43,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:57:43,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:44,603 INFO L124 PetriNetUnfolderBase]: 1904/2966 cut-off events. [2024-06-28 03:57:44,604 INFO L125 PetriNetUnfolderBase]: For 69528/69562 co-relation queries the response was YES. [2024-06-28 03:57:44,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18171 conditions, 2966 events. 1904/2966 cut-off events. For 69528/69562 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 15120 event pairs, 513 based on Foata normal form. 37/3003 useless extension candidates. Maximal degree in co-relation 18108. Up to 2482 conditions per place. [2024-06-28 03:57:44,625 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 133 selfloop transitions, 86 changer transitions 0/223 dead transitions. [2024-06-28 03:57:44,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 223 transitions, 2588 flow [2024-06-28 03:57:44,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:57:44,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:57:44,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 03:57:44,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40773809523809523 [2024-06-28 03:57:44,626 INFO L175 Difference]: Start difference. First operand has 137 places, 187 transitions, 1982 flow. Second operand 8 states and 137 transitions. [2024-06-28 03:57:44,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 223 transitions, 2588 flow [2024-06-28 03:57:44,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 223 transitions, 2422 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 03:57:44,687 INFO L231 Difference]: Finished difference. Result has 138 places, 189 transitions, 2070 flow [2024-06-28 03:57:44,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1818, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2070, PETRI_PLACES=138, PETRI_TRANSITIONS=189} [2024-06-28 03:57:44,688 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 95 predicate places. [2024-06-28 03:57:44,688 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 189 transitions, 2070 flow [2024-06-28 03:57:44,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:44,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:44,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:44,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:57:44,688 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:44,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:44,689 INFO L85 PathProgramCache]: Analyzing trace with hash -528581961, now seen corresponding path program 6 times [2024-06-28 03:57:44,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:44,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97270477] [2024-06-28 03:57:44,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:44,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:47,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:47,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:47,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97270477] [2024-06-28 03:57:47,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97270477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:47,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:47,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:57:47,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705966512] [2024-06-28 03:57:47,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:47,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:57:47,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:47,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:57:47,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:57:47,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:57:47,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 189 transitions, 2070 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:47,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:47,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:57:47,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:48,178 INFO L124 PetriNetUnfolderBase]: 1924/3007 cut-off events. [2024-06-28 03:57:48,178 INFO L125 PetriNetUnfolderBase]: For 74502/74510 co-relation queries the response was YES. [2024-06-28 03:57:48,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18745 conditions, 3007 events. 1924/3007 cut-off events. For 74502/74510 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 15461 event pairs, 654 based on Foata normal form. 12/3019 useless extension candidates. Maximal degree in co-relation 18681. Up to 2749 conditions per place. [2024-06-28 03:57:48,199 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 187 selfloop transitions, 49 changer transitions 0/240 dead transitions. [2024-06-28 03:57:48,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 240 transitions, 2759 flow [2024-06-28 03:57:48,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:57:48,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:57:48,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-28 03:57:48,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4004329004329004 [2024-06-28 03:57:48,201 INFO L175 Difference]: Start difference. First operand has 138 places, 189 transitions, 2070 flow. Second operand 11 states and 185 transitions. [2024-06-28 03:57:48,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 240 transitions, 2759 flow [2024-06-28 03:57:48,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 240 transitions, 2527 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-28 03:57:48,284 INFO L231 Difference]: Finished difference. Result has 143 places, 191 transitions, 2011 flow [2024-06-28 03:57:48,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1846, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2011, PETRI_PLACES=143, PETRI_TRANSITIONS=191} [2024-06-28 03:57:48,284 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 100 predicate places. [2024-06-28 03:57:48,284 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 191 transitions, 2011 flow [2024-06-28 03:57:48,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:48,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:48,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:48,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:57:48,285 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:48,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:48,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1035686013, now seen corresponding path program 7 times [2024-06-28 03:57:48,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:48,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157235192] [2024-06-28 03:57:48,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:48,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:50,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:50,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:50,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157235192] [2024-06-28 03:57:50,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157235192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:50,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:50,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:57:50,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644054727] [2024-06-28 03:57:50,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:50,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:57:50,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:50,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:57:50,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:57:50,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:57:50,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 191 transitions, 2011 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:50,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:50,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:57:50,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:51,723 INFO L124 PetriNetUnfolderBase]: 1944/3039 cut-off events. [2024-06-28 03:57:51,723 INFO L125 PetriNetUnfolderBase]: For 68329/68337 co-relation queries the response was YES. [2024-06-28 03:57:51,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18406 conditions, 3039 events. 1944/3039 cut-off events. For 68329/68337 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 15720 event pairs, 660 based on Foata normal form. 12/3051 useless extension candidates. Maximal degree in co-relation 18341. Up to 2807 conditions per place. [2024-06-28 03:57:51,745 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 190 selfloop transitions, 43 changer transitions 0/237 dead transitions. [2024-06-28 03:57:51,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 237 transitions, 2674 flow [2024-06-28 03:57:51,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:57:51,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:57:51,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-28 03:57:51,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4023809523809524 [2024-06-28 03:57:51,746 INFO L175 Difference]: Start difference. First operand has 143 places, 191 transitions, 2011 flow. Second operand 10 states and 169 transitions. [2024-06-28 03:57:51,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 237 transitions, 2674 flow [2024-06-28 03:57:51,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 237 transitions, 2527 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-28 03:57:51,865 INFO L231 Difference]: Finished difference. Result has 144 places, 193 transitions, 2021 flow [2024-06-28 03:57:51,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1864, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2021, PETRI_PLACES=144, PETRI_TRANSITIONS=193} [2024-06-28 03:57:51,866 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 101 predicate places. [2024-06-28 03:57:51,866 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 193 transitions, 2021 flow [2024-06-28 03:57:51,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:51,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:51,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:51,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:57:51,867 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:51,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:51,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1035833883, now seen corresponding path program 8 times [2024-06-28 03:57:51,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:51,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543463995] [2024-06-28 03:57:51,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:51,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:53,865 INFO 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 03:57:53,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:53,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543463995] [2024-06-28 03:57:53,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543463995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:53,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:53,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:57:53,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463624111] [2024-06-28 03:57:53,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:53,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:57:53,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:53,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:57:53,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:57:53,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:57:53,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 193 transitions, 2021 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:53,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:53,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:57:53,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:54,969 INFO L124 PetriNetUnfolderBase]: 1964/3062 cut-off events. [2024-06-28 03:57:54,969 INFO L125 PetriNetUnfolderBase]: For 74081/74115 co-relation queries the response was YES. [2024-06-28 03:57:54,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18779 conditions, 3062 events. 1964/3062 cut-off events. For 74081/74115 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 15666 event pairs, 414 based on Foata normal form. 37/3099 useless extension candidates. Maximal degree in co-relation 18713. Up to 2688 conditions per place. [2024-06-28 03:57:54,988 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 162 selfloop transitions, 58 changer transitions 0/224 dead transitions. [2024-06-28 03:57:54,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 224 transitions, 2615 flow [2024-06-28 03:57:54,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:57:54,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:57:54,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 03:57:54,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41836734693877553 [2024-06-28 03:57:54,990 INFO L175 Difference]: Start difference. First operand has 144 places, 193 transitions, 2021 flow. Second operand 7 states and 123 transitions. [2024-06-28 03:57:54,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 224 transitions, 2615 flow [2024-06-28 03:57:55,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 224 transitions, 2482 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 03:57:55,054 INFO L231 Difference]: Finished difference. Result has 144 places, 195 transitions, 2079 flow [2024-06-28 03:57:55,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1888, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2079, PETRI_PLACES=144, PETRI_TRANSITIONS=195} [2024-06-28 03:57:55,054 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 101 predicate places. [2024-06-28 03:57:55,055 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 195 transitions, 2079 flow [2024-06-28 03:57:55,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:55,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:55,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:55,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:57:55,055 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:55,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:55,055 INFO L85 PathProgramCache]: Analyzing trace with hash -519642517, now seen corresponding path program 2 times [2024-06-28 03:57:55,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:55,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749021175] [2024-06-28 03:57:55,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:55,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:57,703 INFO 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 03:57:57,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:57,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749021175] [2024-06-28 03:57:57,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749021175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:57,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:57,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:57:57,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342796289] [2024-06-28 03:57:57,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:57,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:57:57,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:57,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:57:57,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:57:57,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:57:57,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 195 transitions, 2079 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:57,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:57,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:57:57,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:59,110 INFO L124 PetriNetUnfolderBase]: 2169/3394 cut-off events. [2024-06-28 03:57:59,110 INFO L125 PetriNetUnfolderBase]: For 86881/86904 co-relation queries the response was YES. [2024-06-28 03:57:59,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20933 conditions, 3394 events. 2169/3394 cut-off events. For 86881/86904 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 17969 event pairs, 442 based on Foata normal form. 39/3433 useless extension candidates. Maximal degree in co-relation 20866. Up to 2842 conditions per place. [2024-06-28 03:57:59,134 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 175 selfloop transitions, 99 changer transitions 0/278 dead transitions. [2024-06-28 03:57:59,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 278 transitions, 3178 flow [2024-06-28 03:57:59,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:57:59,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:57:59,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-28 03:57:59,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4134199134199134 [2024-06-28 03:57:59,137 INFO L175 Difference]: Start difference. First operand has 144 places, 195 transitions, 2079 flow. Second operand 11 states and 191 transitions. [2024-06-28 03:57:59,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 278 transitions, 3178 flow [2024-06-28 03:57:59,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 278 transitions, 2987 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 03:57:59,249 INFO L231 Difference]: Finished difference. Result has 154 places, 225 transitions, 2562 flow [2024-06-28 03:57:59,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1906, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2562, PETRI_PLACES=154, PETRI_TRANSITIONS=225} [2024-06-28 03:57:59,250 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 111 predicate places. [2024-06-28 03:57:59,250 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 225 transitions, 2562 flow [2024-06-28 03:57:59,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:59,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:59,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:59,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:57:59,251 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:59,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:59,251 INFO L85 PathProgramCache]: Analyzing trace with hash -181562699, now seen corresponding path program 3 times [2024-06-28 03:57:59,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:59,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699529418] [2024-06-28 03:57:59,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:59,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:59,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:01,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:01,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:01,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699529418] [2024-06-28 03:58:01,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699529418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:01,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:01,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:58:01,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687142064] [2024-06-28 03:58:01,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:01,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:58:01,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:01,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:58:01,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:58:01,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:58:01,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 225 transitions, 2562 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:01,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:01,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:58:01,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:03,104 INFO L124 PetriNetUnfolderBase]: 2237/3524 cut-off events. [2024-06-28 03:58:03,104 INFO L125 PetriNetUnfolderBase]: For 96982/97020 co-relation queries the response was YES. [2024-06-28 03:58:03,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22123 conditions, 3524 events. 2237/3524 cut-off events. For 96982/97020 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 19012 event pairs, 599 based on Foata normal form. 53/3577 useless extension candidates. Maximal degree in co-relation 22051. Up to 3079 conditions per place. [2024-06-28 03:58:03,129 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 188 selfloop transitions, 71 changer transitions 0/263 dead transitions. [2024-06-28 03:58:03,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 263 transitions, 3269 flow [2024-06-28 03:58:03,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:58:03,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:58:03,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 03:58:03,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41369047619047616 [2024-06-28 03:58:03,131 INFO L175 Difference]: Start difference. First operand has 154 places, 225 transitions, 2562 flow. Second operand 8 states and 139 transitions. [2024-06-28 03:58:03,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 263 transitions, 3269 flow [2024-06-28 03:58:03,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 263 transitions, 3123 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-28 03:58:03,215 INFO L231 Difference]: Finished difference. Result has 158 places, 226 transitions, 2613 flow [2024-06-28 03:58:03,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2416, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2613, PETRI_PLACES=158, PETRI_TRANSITIONS=226} [2024-06-28 03:58:03,215 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 115 predicate places. [2024-06-28 03:58:03,215 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 226 transitions, 2613 flow [2024-06-28 03:58:03,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:03,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:03,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:03,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:58:03,216 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:03,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:03,216 INFO L85 PathProgramCache]: Analyzing trace with hash -528366759, now seen corresponding path program 4 times [2024-06-28 03:58:03,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:03,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997438113] [2024-06-28 03:58:03,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:03,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:05,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:05,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:05,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997438113] [2024-06-28 03:58:05,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997438113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:05,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:05,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:58:05,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578444041] [2024-06-28 03:58:05,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:05,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:58:05,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:05,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:58:05,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:58:05,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:58:05,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 226 transitions, 2613 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:05,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:05,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:58:05,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:07,130 INFO L124 PetriNetUnfolderBase]: 2381/3768 cut-off events. [2024-06-28 03:58:07,130 INFO L125 PetriNetUnfolderBase]: For 111272/111310 co-relation queries the response was YES. [2024-06-28 03:58:07,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24200 conditions, 3768 events. 2381/3768 cut-off events. For 111272/111310 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 20743 event pairs, 591 based on Foata normal form. 49/3817 useless extension candidates. Maximal degree in co-relation 24127. Up to 2892 conditions per place. [2024-06-28 03:58:07,159 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 181 selfloop transitions, 93 changer transitions 0/278 dead transitions. [2024-06-28 03:58:07,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 278 transitions, 3566 flow [2024-06-28 03:58:07,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:58:07,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:58:07,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 03:58:07,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312169312169312 [2024-06-28 03:58:07,160 INFO L175 Difference]: Start difference. First operand has 158 places, 226 transitions, 2613 flow. Second operand 9 states and 163 transitions. [2024-06-28 03:58:07,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 278 transitions, 3566 flow [2024-06-28 03:58:07,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 278 transitions, 3401 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 03:58:07,265 INFO L231 Difference]: Finished difference. Result has 161 places, 228 transitions, 2738 flow [2024-06-28 03:58:07,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2448, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2738, PETRI_PLACES=161, PETRI_TRANSITIONS=228} [2024-06-28 03:58:07,265 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 118 predicate places. [2024-06-28 03:58:07,265 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 228 transitions, 2738 flow [2024-06-28 03:58:07,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:07,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:07,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:07,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:58:07,266 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:07,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:07,266 INFO L85 PathProgramCache]: Analyzing trace with hash -528576009, now seen corresponding path program 5 times [2024-06-28 03:58:07,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:07,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749766479] [2024-06-28 03:58:07,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:07,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:10,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:10,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:10,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749766479] [2024-06-28 03:58:10,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749766479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:10,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:10,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:58:10,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724116526] [2024-06-28 03:58:10,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:10,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:58:10,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:10,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:58:10,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:58:10,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:58:10,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 228 transitions, 2738 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:10,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:10,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:58:10,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:11,883 INFO L124 PetriNetUnfolderBase]: 2517/4000 cut-off events. [2024-06-28 03:58:11,883 INFO L125 PetriNetUnfolderBase]: For 132509/132547 co-relation queries the response was YES. [2024-06-28 03:58:11,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25973 conditions, 4000 events. 2517/4000 cut-off events. For 132509/132547 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 22590 event pairs, 669 based on Foata normal form. 69/4069 useless extension candidates. Maximal degree in co-relation 25899. Up to 3346 conditions per place. [2024-06-28 03:58:11,911 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 185 selfloop transitions, 85 changer transitions 0/274 dead transitions. [2024-06-28 03:58:11,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 274 transitions, 3565 flow [2024-06-28 03:58:11,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:58:11,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:58:11,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 03:58:11,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41534391534391535 [2024-06-28 03:58:11,913 INFO L175 Difference]: Start difference. First operand has 161 places, 228 transitions, 2738 flow. Second operand 9 states and 157 transitions. [2024-06-28 03:58:11,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 274 transitions, 3565 flow [2024-06-28 03:58:12,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 274 transitions, 3417 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 03:58:12,033 INFO L231 Difference]: Finished difference. Result has 165 places, 230 transitions, 2875 flow [2024-06-28 03:58:12,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2592, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2875, PETRI_PLACES=165, PETRI_TRANSITIONS=230} [2024-06-28 03:58:12,034 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 122 predicate places. [2024-06-28 03:58:12,034 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 230 transitions, 2875 flow [2024-06-28 03:58:12,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:12,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:12,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:12,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:58:12,035 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:12,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:12,036 INFO L85 PathProgramCache]: Analyzing trace with hash -528374199, now seen corresponding path program 6 times [2024-06-28 03:58:12,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:12,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244520611] [2024-06-28 03:58:12,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:12,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:15,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:15,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:15,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244520611] [2024-06-28 03:58:15,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244520611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:15,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:15,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:58:15,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846601155] [2024-06-28 03:58:15,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:15,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:58:15,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:15,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:58:15,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:58:15,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:58:15,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 230 transitions, 2875 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:15,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:15,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:58:15,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:16,727 INFO L124 PetriNetUnfolderBase]: 2489/3956 cut-off events. [2024-06-28 03:58:16,728 INFO L125 PetriNetUnfolderBase]: For 123326/123364 co-relation queries the response was YES. [2024-06-28 03:58:16,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25457 conditions, 3956 events. 2489/3956 cut-off events. For 123326/123364 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 22246 event pairs, 653 based on Foata normal form. 53/4009 useless extension candidates. Maximal degree in co-relation 25381. Up to 3128 conditions per place. [2024-06-28 03:58:16,760 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 181 selfloop transitions, 95 changer transitions 0/280 dead transitions. [2024-06-28 03:58:16,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 280 transitions, 3634 flow [2024-06-28 03:58:16,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:58:16,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:58:16,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-28 03:58:16,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4142857142857143 [2024-06-28 03:58:16,762 INFO L175 Difference]: Start difference. First operand has 165 places, 230 transitions, 2875 flow. Second operand 10 states and 174 transitions. [2024-06-28 03:58:16,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 280 transitions, 3634 flow [2024-06-28 03:58:16,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 280 transitions, 3409 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-28 03:58:16,901 INFO L231 Difference]: Finished difference. Result has 168 places, 230 transitions, 2854 flow [2024-06-28 03:58:16,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2650, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2854, PETRI_PLACES=168, PETRI_TRANSITIONS=230} [2024-06-28 03:58:16,901 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 125 predicate places. [2024-06-28 03:58:16,901 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 230 transitions, 2854 flow [2024-06-28 03:58:16,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:16,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:16,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:16,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:58:16,902 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:16,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:16,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1540270821, now seen corresponding path program 9 times [2024-06-28 03:58:16,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:16,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801317115] [2024-06-28 03:58:16,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:16,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:19,130 INFO 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 03:58:19,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:19,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801317115] [2024-06-28 03:58:19,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801317115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:19,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:19,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:58:19,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59120644] [2024-06-28 03:58:19,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:19,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:58:19,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:19,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:58:19,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:58:19,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:58:19,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 230 transitions, 2854 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:19,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:19,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:58:19,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:20,400 INFO L124 PetriNetUnfolderBase]: 2481/3944 cut-off events. [2024-06-28 03:58:20,400 INFO L125 PetriNetUnfolderBase]: For 113459/113497 co-relation queries the response was YES. [2024-06-28 03:58:20,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25024 conditions, 3944 events. 2481/3944 cut-off events. For 113459/113497 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 22248 event pairs, 651 based on Foata normal form. 41/3985 useless extension candidates. Maximal degree in co-relation 24947. Up to 3584 conditions per place. [2024-06-28 03:58:20,433 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 186 selfloop transitions, 71 changer transitions 0/261 dead transitions. [2024-06-28 03:58:20,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 261 transitions, 3543 flow [2024-06-28 03:58:20,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:58:20,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:58:20,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 03:58:20,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41496598639455784 [2024-06-28 03:58:20,434 INFO L175 Difference]: Start difference. First operand has 168 places, 230 transitions, 2854 flow. Second operand 7 states and 122 transitions. [2024-06-28 03:58:20,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 261 transitions, 3543 flow [2024-06-28 03:58:20,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 261 transitions, 3359 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 03:58:20,558 INFO L231 Difference]: Finished difference. Result has 167 places, 232 transitions, 2902 flow [2024-06-28 03:58:20,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2670, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2902, PETRI_PLACES=167, PETRI_TRANSITIONS=232} [2024-06-28 03:58:20,558 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 124 predicate places. [2024-06-28 03:58:20,558 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 232 transitions, 2902 flow [2024-06-28 03:58:20,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:20,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:20,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:20,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:58:20,559 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:20,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:20,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1466655761, now seen corresponding path program 7 times [2024-06-28 03:58:20,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:20,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037402763] [2024-06-28 03:58:20,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:20,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:23,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:23,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:23,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037402763] [2024-06-28 03:58:23,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037402763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:23,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:23,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:58:23,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803969913] [2024-06-28 03:58:23,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:23,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:58:23,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:23,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:58:23,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:58:23,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:58:23,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 232 transitions, 2902 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:23,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:23,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:58:23,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:24,713 INFO L124 PetriNetUnfolderBase]: 2521/4016 cut-off events. [2024-06-28 03:58:24,714 INFO L125 PetriNetUnfolderBase]: For 128122/128160 co-relation queries the response was YES. [2024-06-28 03:58:24,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25486 conditions, 4016 events. 2521/4016 cut-off events. For 128122/128160 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 22729 event pairs, 632 based on Foata normal form. 53/4069 useless extension candidates. Maximal degree in co-relation 25408. Up to 3174 conditions per place. [2024-06-28 03:58:24,742 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 158 selfloop transitions, 113 changer transitions 0/275 dead transitions. [2024-06-28 03:58:24,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 275 transitions, 3657 flow [2024-06-28 03:58:24,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:58:24,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:58:24,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 03:58:24,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-28 03:58:24,744 INFO L175 Difference]: Start difference. First operand has 167 places, 232 transitions, 2902 flow. Second operand 9 states and 154 transitions. [2024-06-28 03:58:24,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 275 transitions, 3657 flow [2024-06-28 03:58:24,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 275 transitions, 3453 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-28 03:58:24,866 INFO L231 Difference]: Finished difference. Result has 171 places, 233 transitions, 2996 flow [2024-06-28 03:58:24,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2698, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2996, PETRI_PLACES=171, PETRI_TRANSITIONS=233} [2024-06-28 03:58:24,866 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 128 predicate places. [2024-06-28 03:58:24,866 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 233 transitions, 2996 flow [2024-06-28 03:58:24,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:24,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:24,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:24,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:58:24,867 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:24,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:24,868 INFO L85 PathProgramCache]: Analyzing trace with hash -571762025, now seen corresponding path program 1 times [2024-06-28 03:58:24,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:24,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164552683] [2024-06-28 03:58:24,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:24,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:27,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:27,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:27,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164552683] [2024-06-28 03:58:27,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164552683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:27,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:27,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:58:27,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846757514] [2024-06-28 03:58:27,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:27,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:58:27,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:27,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:58:27,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:58:27,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:58:27,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 233 transitions, 2996 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:27,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:27,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:58:27,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:28,680 INFO L124 PetriNetUnfolderBase]: 2673/4274 cut-off events. [2024-06-28 03:58:28,680 INFO L125 PetriNetUnfolderBase]: For 137212/137235 co-relation queries the response was YES. [2024-06-28 03:58:28,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26917 conditions, 4274 events. 2673/4274 cut-off events. For 137212/137235 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 24917 event pairs, 604 based on Foata normal form. 35/4309 useless extension candidates. Maximal degree in co-relation 26838. Up to 3666 conditions per place. [2024-06-28 03:58:28,711 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 200 selfloop transitions, 101 changer transitions 0/305 dead transitions. [2024-06-28 03:58:28,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 305 transitions, 3928 flow [2024-06-28 03:58:28,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:58:28,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:58:28,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-28 03:58:28,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41774891774891776 [2024-06-28 03:58:28,713 INFO L175 Difference]: Start difference. First operand has 171 places, 233 transitions, 2996 flow. Second operand 11 states and 193 transitions. [2024-06-28 03:58:28,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 305 transitions, 3928 flow [2024-06-28 03:58:28,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 305 transitions, 3668 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-28 03:58:28,863 INFO L231 Difference]: Finished difference. Result has 178 places, 246 transitions, 3145 flow [2024-06-28 03:58:28,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2740, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3145, PETRI_PLACES=178, PETRI_TRANSITIONS=246} [2024-06-28 03:58:28,863 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 135 predicate places. [2024-06-28 03:58:28,863 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 246 transitions, 3145 flow [2024-06-28 03:58:28,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:28,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:28,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:28,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:58:28,864 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:28,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:28,864 INFO L85 PathProgramCache]: Analyzing trace with hash -2032068965, now seen corresponding path program 2 times [2024-06-28 03:58:28,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:28,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387963435] [2024-06-28 03:58:28,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:28,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:31,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:31,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:31,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387963435] [2024-06-28 03:58:31,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387963435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:31,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:31,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:58:31,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062535326] [2024-06-28 03:58:31,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:31,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:58:31,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:31,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:58:31,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:58:31,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:58:31,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 246 transitions, 3145 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:31,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:31,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:58:31,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:32,824 INFO L124 PetriNetUnfolderBase]: 2721/4355 cut-off events. [2024-06-28 03:58:32,824 INFO L125 PetriNetUnfolderBase]: For 128318/128341 co-relation queries the response was YES. [2024-06-28 03:58:32,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27235 conditions, 4355 events. 2721/4355 cut-off events. For 128318/128341 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 25375 event pairs, 684 based on Foata normal form. 35/4390 useless extension candidates. Maximal degree in co-relation 27152. Up to 3836 conditions per place. [2024-06-28 03:58:32,861 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 203 selfloop transitions, 96 changer transitions 0/303 dead transitions. [2024-06-28 03:58:32,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 303 transitions, 3972 flow [2024-06-28 03:58:32,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:58:32,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:58:32,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-28 03:58:32,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41125541125541126 [2024-06-28 03:58:32,865 INFO L175 Difference]: Start difference. First operand has 178 places, 246 transitions, 3145 flow. Second operand 11 states and 190 transitions. [2024-06-28 03:58:32,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 303 transitions, 3972 flow [2024-06-28 03:58:33,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 303 transitions, 3748 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 03:58:33,044 INFO L231 Difference]: Finished difference. Result has 183 places, 247 transitions, 3176 flow [2024-06-28 03:58:33,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2921, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3176, PETRI_PLACES=183, PETRI_TRANSITIONS=247} [2024-06-28 03:58:33,045 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 140 predicate places. [2024-06-28 03:58:33,045 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 247 transitions, 3176 flow [2024-06-28 03:58:33,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:33,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:33,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:33,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:58:33,046 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:33,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:33,046 INFO L85 PathProgramCache]: Analyzing trace with hash 217105007, now seen corresponding path program 3 times [2024-06-28 03:58:33,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:33,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56775694] [2024-06-28 03:58:33,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:33,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:33,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:35,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:35,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:35,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56775694] [2024-06-28 03:58:35,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56775694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:35,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:35,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:58:35,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231143806] [2024-06-28 03:58:35,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:35,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:58:35,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:35,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:58:35,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:58:35,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:58:35,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 247 transitions, 3176 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:35,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:35,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:58:35,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:37,199 INFO L124 PetriNetUnfolderBase]: 2789/4471 cut-off events. [2024-06-28 03:58:37,200 INFO L125 PetriNetUnfolderBase]: For 137158/137181 co-relation queries the response was YES. [2024-06-28 03:58:37,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27804 conditions, 4471 events. 2789/4471 cut-off events. For 137158/137181 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 26261 event pairs, 743 based on Foata normal form. 35/4506 useless extension candidates. Maximal degree in co-relation 27720. Up to 3998 conditions per place. [2024-06-28 03:58:37,231 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 205 selfloop transitions, 96 changer transitions 0/305 dead transitions. [2024-06-28 03:58:37,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 305 transitions, 4015 flow [2024-06-28 03:58:37,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:58:37,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:58:37,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-28 03:58:37,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41125541125541126 [2024-06-28 03:58:37,233 INFO L175 Difference]: Start difference. First operand has 183 places, 247 transitions, 3176 flow. Second operand 11 states and 190 transitions. [2024-06-28 03:58:37,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 305 transitions, 4015 flow [2024-06-28 03:58:37,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 305 transitions, 3780 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-28 03:58:37,444 INFO L231 Difference]: Finished difference. Result has 186 places, 250 transitions, 3213 flow [2024-06-28 03:58:37,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2941, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3213, PETRI_PLACES=186, PETRI_TRANSITIONS=250} [2024-06-28 03:58:37,444 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 143 predicate places. [2024-06-28 03:58:37,444 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 250 transitions, 3213 flow [2024-06-28 03:58:37,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:37,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:37,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:37,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:58:37,445 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:37,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:37,446 INFO L85 PathProgramCache]: Analyzing trace with hash -584336785, now seen corresponding path program 4 times [2024-06-28 03:58:37,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:37,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725438577] [2024-06-28 03:58:37,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:37,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:39,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:39,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:39,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725438577] [2024-06-28 03:58:39,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725438577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:39,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:39,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:58:39,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800355342] [2024-06-28 03:58:39,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:39,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:58:39,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:39,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:58:39,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:58:39,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:58:39,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 250 transitions, 3213 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:39,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:39,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:58:39,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:41,432 INFO L124 PetriNetUnfolderBase]: 3059/4928 cut-off events. [2024-06-28 03:58:41,432 INFO L125 PetriNetUnfolderBase]: For 145259/145282 co-relation queries the response was YES. [2024-06-28 03:58:41,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29829 conditions, 4928 events. 3059/4928 cut-off events. For 145259/145282 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 29402 event pairs, 517 based on Foata normal form. 35/4963 useless extension candidates. Maximal degree in co-relation 29743. Up to 3936 conditions per place. [2024-06-28 03:58:41,474 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 200 selfloop transitions, 131 changer transitions 0/335 dead transitions. [2024-06-28 03:58:41,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 335 transitions, 4348 flow [2024-06-28 03:58:41,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:58:41,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:58:41,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-28 03:58:41,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4134199134199134 [2024-06-28 03:58:41,476 INFO L175 Difference]: Start difference. First operand has 186 places, 250 transitions, 3213 flow. Second operand 11 states and 191 transitions. [2024-06-28 03:58:41,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 335 transitions, 4348 flow [2024-06-28 03:58:41,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 335 transitions, 4114 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 03:58:41,695 INFO L231 Difference]: Finished difference. Result has 192 places, 277 transitions, 3630 flow [2024-06-28 03:58:41,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2979, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3630, PETRI_PLACES=192, PETRI_TRANSITIONS=277} [2024-06-28 03:58:41,696 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 149 predicate places. [2024-06-28 03:58:41,696 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 277 transitions, 3630 flow [2024-06-28 03:58:41,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:41,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:41,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:41,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:58:41,697 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:41,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:41,697 INFO L85 PathProgramCache]: Analyzing trace with hash -282370239, now seen corresponding path program 1 times [2024-06-28 03:58:41,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:41,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822417851] [2024-06-28 03:58:41,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:41,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:41,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:43,460 INFO 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 03:58:43,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:43,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822417851] [2024-06-28 03:58:43,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822417851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:43,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:43,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:58:43,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240018452] [2024-06-28 03:58:43,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:43,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:58:43,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:43,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:58:43,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:58:43,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:58:43,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 277 transitions, 3630 flow. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 03:58:43,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:43,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:58:43,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:45,032 INFO L124 PetriNetUnfolderBase]: 3064/4942 cut-off events. [2024-06-28 03:58:45,032 INFO L125 PetriNetUnfolderBase]: For 143342/143354 co-relation queries the response was YES. [2024-06-28 03:58:45,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30597 conditions, 4942 events. 3064/4942 cut-off events. For 143342/143354 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 29754 event pairs, 1061 based on Foata normal form. 13/4955 useless extension candidates. Maximal degree in co-relation 30507. Up to 4701 conditions per place. [2024-06-28 03:58:45,076 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 280 selfloop transitions, 42 changer transitions 0/326 dead transitions. [2024-06-28 03:58:45,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 326 transitions, 4582 flow [2024-06-28 03:58:45,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:58:45,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:58:45,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 03:58:45,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41369047619047616 [2024-06-28 03:58:45,078 INFO L175 Difference]: Start difference. First operand has 192 places, 277 transitions, 3630 flow. Second operand 8 states and 139 transitions. [2024-06-28 03:58:45,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 326 transitions, 4582 flow [2024-06-28 03:58:45,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 326 transitions, 4336 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 03:58:45,311 INFO L231 Difference]: Finished difference. Result has 197 places, 293 transitions, 3662 flow [2024-06-28 03:58:45,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3386, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3662, PETRI_PLACES=197, PETRI_TRANSITIONS=293} [2024-06-28 03:58:45,312 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 154 predicate places. [2024-06-28 03:58:45,312 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 293 transitions, 3662 flow [2024-06-28 03:58:45,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 03:58:45,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:45,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:45,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 03:58:45,312 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:45,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:45,313 INFO L85 PathProgramCache]: Analyzing trace with hash 654357737, now seen corresponding path program 5 times [2024-06-28 03:58:45,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:45,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079114747] [2024-06-28 03:58:45,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:45,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:48,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:48,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:48,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079114747] [2024-06-28 03:58:48,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079114747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:48,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:48,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:58:48,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262084853] [2024-06-28 03:58:48,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:48,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:58:48,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:48,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:58:48,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:58:48,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:58:48,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 293 transitions, 3662 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:48,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:48,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:58:48,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:49,636 INFO L124 PetriNetUnfolderBase]: 3112/5022 cut-off events. [2024-06-28 03:58:49,637 INFO L125 PetriNetUnfolderBase]: For 157205/157243 co-relation queries the response was YES. [2024-06-28 03:58:49,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31133 conditions, 5022 events. 3112/5022 cut-off events. For 157205/157243 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 30087 event pairs, 497 based on Foata normal form. 49/5071 useless extension candidates. Maximal degree in co-relation 31040. Up to 3787 conditions per place. [2024-06-28 03:58:49,685 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 198 selfloop transitions, 135 changer transitions 0/337 dead transitions. [2024-06-28 03:58:49,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 337 transitions, 4536 flow [2024-06-28 03:58:49,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:58:49,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:58:49,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 03:58:49,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-28 03:58:49,687 INFO L175 Difference]: Start difference. First operand has 197 places, 293 transitions, 3662 flow. Second operand 9 states and 154 transitions. [2024-06-28 03:58:49,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 337 transitions, 4536 flow [2024-06-28 03:58:49,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 337 transitions, 4494 flow, removed 20 selfloop flow, removed 1 redundant places. [2024-06-28 03:58:49,960 INFO L231 Difference]: Finished difference. Result has 205 places, 294 transitions, 3964 flow [2024-06-28 03:58:49,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3620, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3964, PETRI_PLACES=205, PETRI_TRANSITIONS=294} [2024-06-28 03:58:49,960 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 162 predicate places. [2024-06-28 03:58:49,960 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 294 transitions, 3964 flow [2024-06-28 03:58:49,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:49,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:49,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:49,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 03:58:49,961 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:49,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:49,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1066299819, now seen corresponding path program 6 times [2024-06-28 03:58:49,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:49,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067896137] [2024-06-28 03:58:49,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:49,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:52,564 INFO 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 03:58:52,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:52,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067896137] [2024-06-28 03:58:52,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067896137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:52,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:52,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:58:52,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069151518] [2024-06-28 03:58:52,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:52,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:58:52,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:52,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:58:52,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:58:52,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:58:52,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 294 transitions, 3964 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:52,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:52,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:58:52,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:54,465 INFO L124 PetriNetUnfolderBase]: 3160/5109 cut-off events. [2024-06-28 03:58:54,465 INFO L125 PetriNetUnfolderBase]: For 171149/171187 co-relation queries the response was YES. [2024-06-28 03:58:54,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32544 conditions, 5109 events. 3160/5109 cut-off events. For 171149/171187 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 30953 event pairs, 883 based on Foata normal form. 49/5158 useless extension candidates. Maximal degree in co-relation 32448. Up to 4469 conditions per place. [2024-06-28 03:58:54,507 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 230 selfloop transitions, 103 changer transitions 0/337 dead transitions. [2024-06-28 03:58:54,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 337 transitions, 4851 flow [2024-06-28 03:58:54,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:58:54,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:58:54,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 03:58:54,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-28 03:58:54,509 INFO L175 Difference]: Start difference. First operand has 205 places, 294 transitions, 3964 flow. Second operand 9 states and 153 transitions. [2024-06-28 03:58:54,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 337 transitions, 4851 flow [2024-06-28 03:58:54,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 337 transitions, 4497 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-28 03:58:54,811 INFO L231 Difference]: Finished difference. Result has 206 places, 295 transitions, 3890 flow [2024-06-28 03:58:54,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3616, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3890, PETRI_PLACES=206, PETRI_TRANSITIONS=295} [2024-06-28 03:58:54,811 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 163 predicate places. [2024-06-28 03:58:54,812 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 295 transitions, 3890 flow [2024-06-28 03:58:54,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:54,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:54,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:54,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 03:58:54,812 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:54,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:54,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1621261611, now seen corresponding path program 7 times [2024-06-28 03:58:54,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:54,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048137886] [2024-06-28 03:58:54,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:54,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:57,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:57,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:57,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048137886] [2024-06-28 03:58:57,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048137886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:57,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:57,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:58:57,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409516992] [2024-06-28 03:58:57,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:57,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:58:57,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:57,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:58:57,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:58:57,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:58:57,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 295 transitions, 3890 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:57,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:57,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:58:57,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:59,160 INFO L124 PetriNetUnfolderBase]: 3208/5189 cut-off events. [2024-06-28 03:58:59,160 INFO L125 PetriNetUnfolderBase]: For 162889/162927 co-relation queries the response was YES. [2024-06-28 03:58:59,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32356 conditions, 5189 events. 3208/5189 cut-off events. For 162889/162927 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 31516 event pairs, 872 based on Foata normal form. 49/5238 useless extension candidates. Maximal degree in co-relation 32260. Up to 4355 conditions per place. [2024-06-28 03:58:59,204 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 222 selfloop transitions, 113 changer transitions 0/339 dead transitions. [2024-06-28 03:58:59,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 339 transitions, 4777 flow [2024-06-28 03:58:59,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:58:59,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:58:59,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 03:58:59,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-28 03:58:59,206 INFO L175 Difference]: Start difference. First operand has 206 places, 295 transitions, 3890 flow. Second operand 9 states and 153 transitions. [2024-06-28 03:58:59,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 339 transitions, 4777 flow [2024-06-28 03:58:59,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 339 transitions, 4519 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 03:58:59,507 INFO L231 Difference]: Finished difference. Result has 208 places, 296 transitions, 3930 flow [2024-06-28 03:58:59,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3634, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3930, PETRI_PLACES=208, PETRI_TRANSITIONS=296} [2024-06-28 03:58:59,508 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 165 predicate places. [2024-06-28 03:58:59,508 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 296 transitions, 3930 flow [2024-06-28 03:58:59,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:59,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:59,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:59,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 03:58:59,509 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:59,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:59,509 INFO L85 PathProgramCache]: Analyzing trace with hash 627596437, now seen corresponding path program 8 times [2024-06-28 03:58:59,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:59,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027805997] [2024-06-28 03:58:59,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:59,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:02,066 INFO 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 03:59:02,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:02,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027805997] [2024-06-28 03:59:02,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027805997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:02,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:02,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:59:02,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656136136] [2024-06-28 03:59:02,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:02,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:59:02,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:02,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:59:02,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:59:02,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:59:02,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 296 transitions, 3930 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:02,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:02,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:59:02,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:03,801 INFO L124 PetriNetUnfolderBase]: 3256/5273 cut-off events. [2024-06-28 03:59:03,801 INFO L125 PetriNetUnfolderBase]: For 163714/163752 co-relation queries the response was YES. [2024-06-28 03:59:03,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32783 conditions, 5273 events. 3256/5273 cut-off events. For 163714/163752 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 32193 event pairs, 959 based on Foata normal form. 49/5322 useless extension candidates. Maximal degree in co-relation 32686. Up to 4797 conditions per place. [2024-06-28 03:59:03,846 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 258 selfloop transitions, 72 changer transitions 0/334 dead transitions. [2024-06-28 03:59:03,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 334 transitions, 4789 flow [2024-06-28 03:59:03,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:59:03,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:59:03,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 03:59:03,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-28 03:59:03,848 INFO L175 Difference]: Start difference. First operand has 208 places, 296 transitions, 3930 flow. Second operand 8 states and 138 transitions. [2024-06-28 03:59:03,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 334 transitions, 4789 flow [2024-06-28 03:59:04,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 334 transitions, 4513 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 03:59:04,119 INFO L231 Difference]: Finished difference. Result has 209 places, 297 transitions, 3867 flow [2024-06-28 03:59:04,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3656, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3867, PETRI_PLACES=209, PETRI_TRANSITIONS=297} [2024-06-28 03:59:04,119 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 166 predicate places. [2024-06-28 03:59:04,119 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 297 transitions, 3867 flow [2024-06-28 03:59:04,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:04,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:04,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:04,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 03:59:04,120 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:04,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:04,120 INFO L85 PathProgramCache]: Analyzing trace with hash 623012467, now seen corresponding path program 9 times [2024-06-28 03:59:04,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:04,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454314539] [2024-06-28 03:59:04,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:04,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:06,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:59:06,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:06,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454314539] [2024-06-28 03:59:06,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454314539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:06,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:06,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:59:06,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752926497] [2024-06-28 03:59:06,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:06,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:59:06,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:06,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:59:06,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:59:06,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:59:06,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 297 transitions, 3867 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:06,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:06,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:59:06,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:08,243 INFO L124 PetriNetUnfolderBase]: 3236/5243 cut-off events. [2024-06-28 03:59:08,243 INFO L125 PetriNetUnfolderBase]: For 151321/151359 co-relation queries the response was YES. [2024-06-28 03:59:08,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31642 conditions, 5243 events. 3236/5243 cut-off events. For 151321/151359 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 31922 event pairs, 709 based on Foata normal form. 49/5292 useless extension candidates. Maximal degree in co-relation 31544. Up to 4631 conditions per place. [2024-06-28 03:59:08,293 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 253 selfloop transitions, 78 changer transitions 0/335 dead transitions. [2024-06-28 03:59:08,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 335 transitions, 4606 flow [2024-06-28 03:59:08,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:59:08,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:59:08,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 03:59:08,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-28 03:59:08,294 INFO L175 Difference]: Start difference. First operand has 209 places, 297 transitions, 3867 flow. Second operand 8 states and 138 transitions. [2024-06-28 03:59:08,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 335 transitions, 4606 flow [2024-06-28 03:59:08,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 335 transitions, 4415 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 03:59:08,584 INFO L231 Difference]: Finished difference. Result has 210 places, 296 transitions, 3766 flow [2024-06-28 03:59:08,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3606, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3766, PETRI_PLACES=210, PETRI_TRANSITIONS=296} [2024-06-28 03:59:08,585 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 167 predicate places. [2024-06-28 03:59:08,585 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 296 transitions, 3766 flow [2024-06-28 03:59:08,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:08,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:08,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:08,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 03:59:08,586 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:08,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:08,586 INFO L85 PathProgramCache]: Analyzing trace with hash 2028066501, now seen corresponding path program 2 times [2024-06-28 03:59:08,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:08,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393365419] [2024-06-28 03:59:08,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:08,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:10,832 INFO 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 03:59:10,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:10,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393365419] [2024-06-28 03:59:10,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393365419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:10,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:10,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:59:10,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039070520] [2024-06-28 03:59:10,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:10,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:59:10,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:10,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:59:10,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:59:10,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:59:10,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 296 transitions, 3766 flow. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 03:59:10,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:10,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:59:10,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:12,504 INFO L124 PetriNetUnfolderBase]: 3241/5257 cut-off events. [2024-06-28 03:59:12,505 INFO L125 PetriNetUnfolderBase]: For 146343/146363 co-relation queries the response was YES. [2024-06-28 03:59:12,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31630 conditions, 5257 events. 3241/5257 cut-off events. For 146343/146363 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 32211 event pairs, 1126 based on Foata normal form. 21/5278 useless extension candidates. Maximal degree in co-relation 31531. Up to 5011 conditions per place. [2024-06-28 03:59:12,551 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 272 selfloop transitions, 42 changer transitions 0/318 dead transitions. [2024-06-28 03:59:12,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 318 transitions, 4570 flow [2024-06-28 03:59:12,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:59:12,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:59:12,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2024-06-28 03:59:12,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-28 03:59:12,553 INFO L175 Difference]: Start difference. First operand has 210 places, 296 transitions, 3766 flow. Second operand 6 states and 102 transitions. [2024-06-28 03:59:12,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 318 transitions, 4570 flow [2024-06-28 03:59:12,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 318 transitions, 4364 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 03:59:12,813 INFO L231 Difference]: Finished difference. Result has 210 places, 299 transitions, 3693 flow [2024-06-28 03:59:12,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3560, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3693, PETRI_PLACES=210, PETRI_TRANSITIONS=299} [2024-06-28 03:59:12,814 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 167 predicate places. [2024-06-28 03:59:12,814 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 299 transitions, 3693 flow [2024-06-28 03:59:12,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 03:59:12,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:12,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:12,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 03:59:12,815 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:12,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:12,815 INFO L85 PathProgramCache]: Analyzing trace with hash 2059761273, now seen corresponding path program 1 times [2024-06-28 03:59:12,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:12,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037990646] [2024-06-28 03:59:12,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:12,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:12,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:15,157 INFO 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 03:59:15,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:15,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037990646] [2024-06-28 03:59:15,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037990646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:15,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:15,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:59:15,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799167854] [2024-06-28 03:59:15,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:15,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:59:15,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:15,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:59:15,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:59:15,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:59:15,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 299 transitions, 3693 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 03:59:15,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:15,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:59:15,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:17,068 INFO L124 PetriNetUnfolderBase]: 3134/5112 cut-off events. [2024-06-28 03:59:17,068 INFO L125 PetriNetUnfolderBase]: For 151610/151770 co-relation queries the response was YES. [2024-06-28 03:59:17,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30523 conditions, 5112 events. 3134/5112 cut-off events. For 151610/151770 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 31610 event pairs, 1091 based on Foata normal form. 143/5222 useless extension candidates. Maximal degree in co-relation 30423. Up to 4803 conditions per place. [2024-06-28 03:59:17,111 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 252 selfloop transitions, 38 changer transitions 0/313 dead transitions. [2024-06-28 03:59:17,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 313 transitions, 4333 flow [2024-06-28 03:59:17,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:59:17,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:59:17,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-06-28 03:59:17,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-28 03:59:17,112 INFO L175 Difference]: Start difference. First operand has 210 places, 299 transitions, 3693 flow. Second operand 6 states and 99 transitions. [2024-06-28 03:59:17,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 313 transitions, 4333 flow [2024-06-28 03:59:17,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 313 transitions, 4258 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 03:59:17,356 INFO L231 Difference]: Finished difference. Result has 212 places, 302 transitions, 3740 flow [2024-06-28 03:59:17,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3618, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3740, PETRI_PLACES=212, PETRI_TRANSITIONS=302} [2024-06-28 03:59:17,356 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 169 predicate places. [2024-06-28 03:59:17,356 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 302 transitions, 3740 flow [2024-06-28 03:59:17,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 03:59:17,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:17,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:17,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 03:59:17,357 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:17,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:17,357 INFO L85 PathProgramCache]: Analyzing trace with hash 2028365031, now seen corresponding path program 3 times [2024-06-28 03:59:17,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:17,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299592346] [2024-06-28 03:59:17,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:17,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:19,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:59:19,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:19,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299592346] [2024-06-28 03:59:19,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299592346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:19,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:19,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:59:19,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383181532] [2024-06-28 03:59:19,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:19,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:59:19,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:19,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:59:19,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:59:19,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:59:19,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 302 transitions, 3740 flow. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 03:59:19,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:19,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:59:19,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:21,318 INFO L124 PetriNetUnfolderBase]: 3258/5262 cut-off events. [2024-06-28 03:59:21,319 INFO L125 PetriNetUnfolderBase]: For 138576/138588 co-relation queries the response was YES. [2024-06-28 03:59:21,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31435 conditions, 5262 events. 3258/5262 cut-off events. For 138576/138588 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 31879 event pairs, 830 based on Foata normal form. 4/5266 useless extension candidates. Maximal degree in co-relation 31335. Up to 5036 conditions per place. [2024-06-28 03:59:21,372 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 267 selfloop transitions, 42 changer transitions 0/313 dead transitions. [2024-06-28 03:59:21,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 313 transitions, 4397 flow [2024-06-28 03:59:21,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:59:21,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:59:21,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 94 transitions. [2024-06-28 03:59:21,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2024-06-28 03:59:21,373 INFO L175 Difference]: Start difference. First operand has 212 places, 302 transitions, 3740 flow. Second operand 6 states and 94 transitions. [2024-06-28 03:59:21,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 313 transitions, 4397 flow [2024-06-28 03:59:21,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 313 transitions, 4295 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 03:59:21,729 INFO L231 Difference]: Finished difference. Result has 214 places, 302 transitions, 3728 flow [2024-06-28 03:59:21,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3638, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3728, PETRI_PLACES=214, PETRI_TRANSITIONS=302} [2024-06-28 03:59:21,730 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 171 predicate places. [2024-06-28 03:59:21,730 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 302 transitions, 3728 flow [2024-06-28 03:59:21,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 03:59:21,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:21,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:21,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 03:59:21,731 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:21,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:21,732 INFO L85 PathProgramCache]: Analyzing trace with hash -97072357, now seen corresponding path program 2 times [2024-06-28 03:59:21,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:21,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279598376] [2024-06-28 03:59:21,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:21,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:21,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:24,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:59:24,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:24,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279598376] [2024-06-28 03:59:24,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279598376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:24,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:24,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:59:24,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116979654] [2024-06-28 03:59:24,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:24,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:59:24,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:24,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:59:24,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:59:24,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:59:24,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 302 transitions, 3728 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 03:59:24,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:24,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:59:24,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:25,980 INFO L124 PetriNetUnfolderBase]: 3119/5092 cut-off events. [2024-06-28 03:59:25,981 INFO L125 PetriNetUnfolderBase]: For 142797/142957 co-relation queries the response was YES. [2024-06-28 03:59:26,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30155 conditions, 5092 events. 3119/5092 cut-off events. For 142797/142957 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 31484 event pairs, 1091 based on Foata normal form. 143/5202 useless extension candidates. Maximal degree in co-relation 30054. Up to 4770 conditions per place. [2024-06-28 03:59:26,038 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 254 selfloop transitions, 41 changer transitions 0/318 dead transitions. [2024-06-28 03:59:26,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 318 transitions, 4384 flow [2024-06-28 03:59:26,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:59:26,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:59:26,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions. [2024-06-28 03:59:26,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-28 03:59:26,040 INFO L175 Difference]: Start difference. First operand has 214 places, 302 transitions, 3728 flow. Second operand 7 states and 112 transitions. [2024-06-28 03:59:26,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 318 transitions, 4384 flow [2024-06-28 03:59:26,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 318 transitions, 4286 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 03:59:26,318 INFO L231 Difference]: Finished difference. Result has 217 places, 305 transitions, 3754 flow [2024-06-28 03:59:26,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3630, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3754, PETRI_PLACES=217, PETRI_TRANSITIONS=305} [2024-06-28 03:59:26,319 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 174 predicate places. [2024-06-28 03:59:26,319 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 305 transitions, 3754 flow [2024-06-28 03:59:26,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 03:59:26,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:26,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:26,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 03:59:26,319 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:26,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:26,320 INFO L85 PathProgramCache]: Analyzing trace with hash -274555231, now seen corresponding path program 1 times [2024-06-28 03:59:26,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:26,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17209618] [2024-06-28 03:59:26,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:26,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:29,007 INFO 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 03:59:29,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:29,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17209618] [2024-06-28 03:59:29,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17209618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:29,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:29,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:59:29,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526088899] [2024-06-28 03:59:29,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:29,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:59:29,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:29,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:59:29,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:59:29,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:59:29,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 305 transitions, 3754 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 03:59:29,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:29,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:59:29,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:30,285 INFO L124 PetriNetUnfolderBase]: 3147/5156 cut-off events. [2024-06-28 03:59:30,285 INFO L125 PetriNetUnfolderBase]: For 142688/142727 co-relation queries the response was YES. [2024-06-28 03:59:30,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30929 conditions, 5156 events. 3147/5156 cut-off events. For 142688/142727 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 31691 event pairs, 1031 based on Foata normal form. 35/5181 useless extension candidates. Maximal degree in co-relation 30827. Up to 4897 conditions per place. [2024-06-28 03:59:30,334 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 278 selfloop transitions, 33 changer transitions 0/322 dead transitions. [2024-06-28 03:59:30,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 322 transitions, 4470 flow [2024-06-28 03:59:30,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:59:30,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:59:30,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-28 03:59:30,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968253968253968 [2024-06-28 03:59:30,336 INFO L175 Difference]: Start difference. First operand has 217 places, 305 transitions, 3754 flow. Second operand 6 states and 100 transitions. [2024-06-28 03:59:30,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 322 transitions, 4470 flow [2024-06-28 03:59:30,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 322 transitions, 4368 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 03:59:30,599 INFO L231 Difference]: Finished difference. Result has 218 places, 308 transitions, 3779 flow [2024-06-28 03:59:30,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3652, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3779, PETRI_PLACES=218, PETRI_TRANSITIONS=308} [2024-06-28 03:59:30,600 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 175 predicate places. [2024-06-28 03:59:30,600 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 308 transitions, 3779 flow [2024-06-28 03:59:30,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 03:59:30,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:30,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:30,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 03:59:30,601 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:30,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:30,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1714709861, now seen corresponding path program 2 times [2024-06-28 03:59:30,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:30,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343197695] [2024-06-28 03:59:30,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:30,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:30,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:32,670 INFO 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 03:59:32,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:32,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343197695] [2024-06-28 03:59:32,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343197695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:32,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:32,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:59:32,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691245908] [2024-06-28 03:59:32,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:32,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:59:32,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:32,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:59:32,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:59:32,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:59:32,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 308 transitions, 3779 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 03:59:32,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:32,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:59:32,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:34,107 INFO L124 PetriNetUnfolderBase]: 3142/5160 cut-off events. [2024-06-28 03:59:34,107 INFO L125 PetriNetUnfolderBase]: For 147428/147467 co-relation queries the response was YES. [2024-06-28 03:59:34,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31106 conditions, 5160 events. 3142/5160 cut-off events. For 147428/147467 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 31969 event pairs, 1154 based on Foata normal form. 28/5178 useless extension candidates. Maximal degree in co-relation 31003. Up to 4907 conditions per place. [2024-06-28 03:59:34,160 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 275 selfloop transitions, 35 changer transitions 0/321 dead transitions. [2024-06-28 03:59:34,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 321 transitions, 4483 flow [2024-06-28 03:59:34,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:59:34,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:59:34,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-06-28 03:59:34,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38492063492063494 [2024-06-28 03:59:34,162 INFO L175 Difference]: Start difference. First operand has 218 places, 308 transitions, 3779 flow. Second operand 6 states and 97 transitions. [2024-06-28 03:59:34,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 321 transitions, 4483 flow [2024-06-28 03:59:34,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 321 transitions, 4380 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 03:59:34,388 INFO L231 Difference]: Finished difference. Result has 220 places, 311 transitions, 3813 flow [2024-06-28 03:59:34,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3676, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3813, PETRI_PLACES=220, PETRI_TRANSITIONS=311} [2024-06-28 03:59:34,389 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 177 predicate places. [2024-06-28 03:59:34,389 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 311 transitions, 3813 flow [2024-06-28 03:59:34,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 03:59:34,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:34,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:34,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 03:59:34,390 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:34,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:34,390 INFO L85 PathProgramCache]: Analyzing trace with hash -960094529, now seen corresponding path program 1 times [2024-06-28 03:59:34,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:34,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728768099] [2024-06-28 03:59:34,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:34,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:37,724 INFO 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 03:59:37,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:37,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728768099] [2024-06-28 03:59:37,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728768099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:37,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:37,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:37,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795053153] [2024-06-28 03:59:37,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:37,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:37,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:37,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:37,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:37,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:59:37,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 311 transitions, 3813 flow. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 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 03:59:37,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:37,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:59:37,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:39,416 INFO L124 PetriNetUnfolderBase]: 3101/5063 cut-off events. [2024-06-28 03:59:39,416 INFO L125 PetriNetUnfolderBase]: For 156814/156994 co-relation queries the response was YES. [2024-06-28 03:59:39,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30600 conditions, 5063 events. 3101/5063 cut-off events. For 156814/156994 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 31532 event pairs, 1643 based on Foata normal form. 149/5180 useless extension candidates. Maximal degree in co-relation 30496. Up to 4831 conditions per place. [2024-06-28 03:59:39,467 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 284 selfloop transitions, 19 changer transitions 0/326 dead transitions. [2024-06-28 03:59:39,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 326 transitions, 4473 flow [2024-06-28 03:59:39,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:59:39,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:59:39,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 117 transitions. [2024-06-28 03:59:39,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3482142857142857 [2024-06-28 03:59:39,468 INFO L175 Difference]: Start difference. First operand has 220 places, 311 transitions, 3813 flow. Second operand 8 states and 117 transitions. [2024-06-28 03:59:39,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 326 transitions, 4473 flow [2024-06-28 03:59:39,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 326 transitions, 4360 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-28 03:59:39,737 INFO L231 Difference]: Finished difference. Result has 224 places, 313 transitions, 3765 flow [2024-06-28 03:59:39,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3700, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3765, PETRI_PLACES=224, PETRI_TRANSITIONS=313} [2024-06-28 03:59:39,738 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 181 predicate places. [2024-06-28 03:59:39,738 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 313 transitions, 3765 flow [2024-06-28 03:59:39,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 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 03:59:39,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:39,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:39,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 03:59:39,739 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:39,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:39,739 INFO L85 PathProgramCache]: Analyzing trace with hash -163541318, now seen corresponding path program 1 times [2024-06-28 03:59:39,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:39,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492284665] [2024-06-28 03:59:39,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:39,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:41,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:59:41,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:41,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492284665] [2024-06-28 03:59:41,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492284665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:41,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:41,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:59:41,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13315524] [2024-06-28 03:59:41,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:41,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:59:41,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:41,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:59:41,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:59:41,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:59:41,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 313 transitions, 3765 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 03:59:41,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:41,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:59:41,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:43,845 INFO L124 PetriNetUnfolderBase]: 3266/5295 cut-off events. [2024-06-28 03:59:43,845 INFO L125 PetriNetUnfolderBase]: For 156637/156649 co-relation queries the response was YES. [2024-06-28 03:59:43,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32050 conditions, 5295 events. 3266/5295 cut-off events. For 156637/156649 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 32480 event pairs, 1115 based on Foata normal form. 14/5309 useless extension candidates. Maximal degree in co-relation 31945. Up to 5021 conditions per place. [2024-06-28 03:59:43,893 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 303 selfloop transitions, 54 changer transitions 0/361 dead transitions. [2024-06-28 03:59:43,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 361 transitions, 4762 flow [2024-06-28 03:59:43,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:59:43,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:59:43,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-28 03:59:43,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37662337662337664 [2024-06-28 03:59:43,894 INFO L175 Difference]: Start difference. First operand has 224 places, 313 transitions, 3765 flow. Second operand 11 states and 174 transitions. [2024-06-28 03:59:43,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 361 transitions, 4762 flow [2024-06-28 03:59:44,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 361 transitions, 4674 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 03:59:44,196 INFO L231 Difference]: Finished difference. Result has 230 places, 322 transitions, 3885 flow [2024-06-28 03:59:44,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3677, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3885, PETRI_PLACES=230, PETRI_TRANSITIONS=322} [2024-06-28 03:59:44,197 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 187 predicate places. [2024-06-28 03:59:44,197 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 322 transitions, 3885 flow [2024-06-28 03:59:44,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 03:59:44,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:44,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:44,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 03:59:44,197 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:44,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:44,198 INFO L85 PathProgramCache]: Analyzing trace with hash 2071142592, now seen corresponding path program 2 times [2024-06-28 03:59:44,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:44,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586834626] [2024-06-28 03:59:44,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:44,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:46,833 INFO 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 03:59:46,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:46,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586834626] [2024-06-28 03:59:46,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586834626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:46,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:46,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:59:46,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867650506] [2024-06-28 03:59:46,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:46,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:59:46,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:46,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:59:46,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:59:46,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:59:46,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 322 transitions, 3885 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 03:59:46,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:46,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:59:46,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:49,095 INFO L124 PetriNetUnfolderBase]: 3332/5378 cut-off events. [2024-06-28 03:59:49,095 INFO L125 PetriNetUnfolderBase]: For 166346/166358 co-relation queries the response was YES. [2024-06-28 03:59:49,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33097 conditions, 5378 events. 3332/5378 cut-off events. For 166346/166358 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 32827 event pairs, 837 based on Foata normal form. 14/5392 useless extension candidates. Maximal degree in co-relation 32991. Up to 5076 conditions per place. [2024-06-28 03:59:49,144 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 307 selfloop transitions, 75 changer transitions 0/386 dead transitions. [2024-06-28 03:59:49,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 386 transitions, 5197 flow [2024-06-28 03:59:49,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:59:49,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:59:49,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 190 transitions. [2024-06-28 03:59:49,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.376984126984127 [2024-06-28 03:59:49,145 INFO L175 Difference]: Start difference. First operand has 230 places, 322 transitions, 3885 flow. Second operand 12 states and 190 transitions. [2024-06-28 03:59:49,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 386 transitions, 5197 flow [2024-06-28 03:59:49,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 386 transitions, 5045 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-06-28 03:59:49,504 INFO L231 Difference]: Finished difference. Result has 240 places, 347 transitions, 4213 flow [2024-06-28 03:59:49,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3795, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4213, PETRI_PLACES=240, PETRI_TRANSITIONS=347} [2024-06-28 03:59:49,505 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 197 predicate places. [2024-06-28 03:59:49,505 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 347 transitions, 4213 flow [2024-06-28 03:59:49,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 03:59:49,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:49,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:49,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 03:59:49,505 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:49,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:49,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1241298304, now seen corresponding path program 3 times [2024-06-28 03:59:49,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:49,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287776939] [2024-06-28 03:59:49,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:49,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:51,694 INFO 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 03:59:51,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:51,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287776939] [2024-06-28 03:59:51,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287776939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:51,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:51,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:59:51,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508131569] [2024-06-28 03:59:51,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:51,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:59:51,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:51,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:59:51,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:59:51,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:59:51,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 347 transitions, 4213 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 03:59:51,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:51,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:59:51,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:54,129 INFO L124 PetriNetUnfolderBase]: 3368/5430 cut-off events. [2024-06-28 03:59:54,129 INFO L125 PetriNetUnfolderBase]: For 176600/176610 co-relation queries the response was YES. [2024-06-28 03:59:54,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33759 conditions, 5430 events. 3368/5430 cut-off events. For 176600/176610 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 32973 event pairs, 821 based on Foata normal form. 6/5436 useless extension candidates. Maximal degree in co-relation 33648. Up to 5105 conditions per place. [2024-06-28 03:59:54,178 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 286 selfloop transitions, 87 changer transitions 0/377 dead transitions. [2024-06-28 03:59:54,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 377 transitions, 5309 flow [2024-06-28 03:59:54,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:59:54,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:59:54,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions. [2024-06-28 03:59:54,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3544973544973545 [2024-06-28 03:59:54,180 INFO L175 Difference]: Start difference. First operand has 240 places, 347 transitions, 4213 flow. Second operand 9 states and 134 transitions. [2024-06-28 03:59:54,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 377 transitions, 5309 flow [2024-06-28 03:59:54,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 377 transitions, 5191 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 03:59:54,521 INFO L231 Difference]: Finished difference. Result has 246 places, 359 transitions, 4441 flow [2024-06-28 03:59:54,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4104, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4441, PETRI_PLACES=246, PETRI_TRANSITIONS=359} [2024-06-28 03:59:54,521 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 203 predicate places. [2024-06-28 03:59:54,521 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 359 transitions, 4441 flow [2024-06-28 03:59:54,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 03:59:54,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:54,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:54,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 03:59:54,522 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:54,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:54,523 INFO L85 PathProgramCache]: Analyzing trace with hash -603189400, now seen corresponding path program 4 times [2024-06-28 03:59:54,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:54,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11492628] [2024-06-28 03:59:54,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:54,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:56,995 INFO 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 03:59:56,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:56,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11492628] [2024-06-28 03:59:56,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11492628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:56,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:56,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:59:56,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215793786] [2024-06-28 03:59:56,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:56,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:59:56,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:56,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:59:56,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:59:57,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:59:57,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 359 transitions, 4441 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 03:59:57,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:57,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:59:57,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:59,130 INFO L124 PetriNetUnfolderBase]: 3356/5414 cut-off events. [2024-06-28 03:59:59,130 INFO L125 PetriNetUnfolderBase]: For 179514/179524 co-relation queries the response was YES. [2024-06-28 03:59:59,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33726 conditions, 5414 events. 3356/5414 cut-off events. For 179514/179524 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 32951 event pairs, 821 based on Foata normal form. 6/5420 useless extension candidates. Maximal degree in co-relation 33614. Up to 5095 conditions per place. [2024-06-28 03:59:59,181 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 284 selfloop transitions, 85 changer transitions 0/373 dead transitions. [2024-06-28 03:59:59,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 373 transitions, 5307 flow [2024-06-28 03:59:59,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:59:59,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:59:59,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2024-06-28 03:59:59,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741496598639456 [2024-06-28 03:59:59,183 INFO L175 Difference]: Start difference. First operand has 246 places, 359 transitions, 4441 flow. Second operand 7 states and 110 transitions. [2024-06-28 03:59:59,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 373 transitions, 5307 flow [2024-06-28 03:59:59,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 373 transitions, 5100 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-28 03:59:59,466 INFO L231 Difference]: Finished difference. Result has 247 places, 359 transitions, 4414 flow [2024-06-28 03:59:59,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4234, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4414, PETRI_PLACES=247, PETRI_TRANSITIONS=359} [2024-06-28 03:59:59,466 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 204 predicate places. [2024-06-28 03:59:59,466 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 359 transitions, 4414 flow [2024-06-28 03:59:59,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 03:59:59,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:59,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:59,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 03:59:59,467 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:59,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:59,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1138838018, now seen corresponding path program 5 times [2024-06-28 03:59:59,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:59,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128789989] [2024-06-28 03:59:59,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:59,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:59,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:01,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:01,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:01,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128789989] [2024-06-28 04:00:01,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128789989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:01,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:01,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:01,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424238100] [2024-06-28 04:00:01,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:01,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:01,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:01,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:01,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:01,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:00:01,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 359 transitions, 4414 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:00:01,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:01,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:00:01,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:04,072 INFO L124 PetriNetUnfolderBase]: 3350/5425 cut-off events. [2024-06-28 04:00:04,072 INFO L125 PetriNetUnfolderBase]: For 182080/182098 co-relation queries the response was YES. [2024-06-28 04:00:04,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33631 conditions, 5425 events. 3350/5425 cut-off events. For 182080/182098 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 33304 event pairs, 1117 based on Foata normal form. 20/5445 useless extension candidates. Maximal degree in co-relation 33519. Up to 5090 conditions per place. [2024-06-28 04:00:04,132 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 291 selfloop transitions, 87 changer transitions 0/382 dead transitions. [2024-06-28 04:00:04,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 382 transitions, 5236 flow [2024-06-28 04:00:04,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:00:04,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:00:04,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-28 04:00:04,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2024-06-28 04:00:04,134 INFO L175 Difference]: Start difference. First operand has 247 places, 359 transitions, 4414 flow. Second operand 9 states and 138 transitions. [2024-06-28 04:00:04,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 382 transitions, 5236 flow [2024-06-28 04:00:04,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 382 transitions, 5048 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 04:00:04,629 INFO L231 Difference]: Finished difference. Result has 250 places, 359 transitions, 4418 flow [2024-06-28 04:00:04,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4226, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4418, PETRI_PLACES=250, PETRI_TRANSITIONS=359} [2024-06-28 04:00:04,629 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 207 predicate places. [2024-06-28 04:00:04,629 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 359 transitions, 4418 flow [2024-06-28 04:00:04,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:00:04,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:04,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:04,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 04:00:04,630 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:04,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:04,631 INFO L85 PathProgramCache]: Analyzing trace with hash 297217998, now seen corresponding path program 6 times [2024-06-28 04:00:04,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:04,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245019753] [2024-06-28 04:00:04,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:04,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:07,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:07,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:07,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245019753] [2024-06-28 04:00:07,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245019753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:07,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:07,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:07,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577559206] [2024-06-28 04:00:07,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:07,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:07,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:07,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:07,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:07,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:00:07,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 359 transitions, 4418 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:00:07,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:07,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:00:07,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:09,303 INFO L124 PetriNetUnfolderBase]: 3344/5398 cut-off events. [2024-06-28 04:00:09,303 INFO L125 PetriNetUnfolderBase]: For 185143/185153 co-relation queries the response was YES. [2024-06-28 04:00:09,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33629 conditions, 5398 events. 3344/5398 cut-off events. For 185143/185153 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 32785 event pairs, 824 based on Foata normal form. 4/5402 useless extension candidates. Maximal degree in co-relation 33516. Up to 5066 conditions per place. [2024-06-28 04:00:09,361 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 287 selfloop transitions, 89 changer transitions 0/380 dead transitions. [2024-06-28 04:00:09,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 380 transitions, 5268 flow [2024-06-28 04:00:09,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:00:09,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:00:09,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-06-28 04:00:09,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3601190476190476 [2024-06-28 04:00:09,362 INFO L175 Difference]: Start difference. First operand has 250 places, 359 transitions, 4418 flow. Second operand 8 states and 121 transitions. [2024-06-28 04:00:09,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 380 transitions, 5268 flow [2024-06-28 04:00:09,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 380 transitions, 5074 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 04:00:09,712 INFO L231 Difference]: Finished difference. Result has 250 places, 365 transitions, 4480 flow [2024-06-28 04:00:09,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4224, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4480, PETRI_PLACES=250, PETRI_TRANSITIONS=365} [2024-06-28 04:00:09,713 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 207 predicate places. [2024-06-28 04:00:09,713 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 365 transitions, 4480 flow [2024-06-28 04:00:09,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:00:09,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:09,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:09,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 04:00:09,714 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:09,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:09,714 INFO L85 PathProgramCache]: Analyzing trace with hash 78633565, now seen corresponding path program 1 times [2024-06-28 04:00:09,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:09,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498540733] [2024-06-28 04:00:09,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:09,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:12,496 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 04:00:12,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:12,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498540733] [2024-06-28 04:00:12,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498540733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:12,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:12,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:12,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201393780] [2024-06-28 04:00:12,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:12,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:12,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:12,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:12,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:12,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:00:12,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 365 transitions, 4480 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 04:00:12,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:12,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:00:12,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:14,152 INFO L124 PetriNetUnfolderBase]: 3280/5360 cut-off events. [2024-06-28 04:00:14,152 INFO L125 PetriNetUnfolderBase]: For 182818/182856 co-relation queries the response was YES. [2024-06-28 04:00:14,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33611 conditions, 5360 events. 3280/5360 cut-off events. For 182818/182856 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 33252 event pairs, 1162 based on Foata normal form. 34/5382 useless extension candidates. Maximal degree in co-relation 33498. Up to 4999 conditions per place. [2024-06-28 04:00:14,206 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 335 selfloop transitions, 43 changer transitions 0/391 dead transitions. [2024-06-28 04:00:14,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 391 transitions, 5470 flow [2024-06-28 04:00:14,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:00:14,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:00:14,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 04:00:14,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40816326530612246 [2024-06-28 04:00:14,207 INFO L175 Difference]: Start difference. First operand has 250 places, 365 transitions, 4480 flow. Second operand 7 states and 120 transitions. [2024-06-28 04:00:14,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 391 transitions, 5470 flow [2024-06-28 04:00:14,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 391 transitions, 5325 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 04:00:14,490 INFO L231 Difference]: Finished difference. Result has 253 places, 371 transitions, 4509 flow [2024-06-28 04:00:14,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4335, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4509, PETRI_PLACES=253, PETRI_TRANSITIONS=371} [2024-06-28 04:00:14,491 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 210 predicate places. [2024-06-28 04:00:14,491 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 371 transitions, 4509 flow [2024-06-28 04:00:14,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 04:00:14,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:14,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:14,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 04:00:14,492 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:14,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:14,492 INFO L85 PathProgramCache]: Analyzing trace with hash 670689148, now seen corresponding path program 1 times [2024-06-28 04:00:14,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:14,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418393368] [2024-06-28 04:00:14,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:14,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:18,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:18,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:18,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418393368] [2024-06-28 04:00:18,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418393368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:18,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:18,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:00:18,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982687879] [2024-06-28 04:00:18,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:18,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:00:18,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:18,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:00:18,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:00:18,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:00:18,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 371 transitions, 4509 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:18,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:18,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:00:18,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:19,717 INFO L124 PetriNetUnfolderBase]: 3388/5487 cut-off events. [2024-06-28 04:00:19,717 INFO L125 PetriNetUnfolderBase]: For 191826/191828 co-relation queries the response was YES. [2024-06-28 04:00:19,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34949 conditions, 5487 events. 3388/5487 cut-off events. For 191826/191828 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 33981 event pairs, 1742 based on Foata normal form. 4/5491 useless extension candidates. Maximal degree in co-relation 34834. Up to 5270 conditions per place. [2024-06-28 04:00:19,775 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 378 selfloop transitions, 25 changer transitions 0/407 dead transitions. [2024-06-28 04:00:19,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 407 transitions, 5643 flow [2024-06-28 04:00:19,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:00:19,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:00:19,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-28 04:00:19,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3843537414965986 [2024-06-28 04:00:19,777 INFO L175 Difference]: Start difference. First operand has 253 places, 371 transitions, 4509 flow. Second operand 7 states and 113 transitions. [2024-06-28 04:00:19,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 407 transitions, 5643 flow [2024-06-28 04:00:20,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 407 transitions, 5563 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 04:00:20,162 INFO L231 Difference]: Finished difference. Result has 260 places, 387 transitions, 4702 flow [2024-06-28 04:00:20,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4433, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4702, PETRI_PLACES=260, PETRI_TRANSITIONS=387} [2024-06-28 04:00:20,163 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 217 predicate places. [2024-06-28 04:00:20,163 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 387 transitions, 4702 flow [2024-06-28 04:00:20,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:20,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:20,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:20,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 04:00:20,164 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:20,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:20,165 INFO L85 PathProgramCache]: Analyzing trace with hash 670688993, now seen corresponding path program 2 times [2024-06-28 04:00:20,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:20,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54214559] [2024-06-28 04:00:20,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:20,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:23,557 INFO 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 04:00:23,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:23,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54214559] [2024-06-28 04:00:23,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54214559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:23,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:23,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:23,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443982201] [2024-06-28 04:00:23,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:23,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:23,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:23,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:23,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:23,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:00:23,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 387 transitions, 4702 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 04:00:23,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:23,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:00:23,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:25,017 INFO L124 PetriNetUnfolderBase]: 3317/5406 cut-off events. [2024-06-28 04:00:25,018 INFO L125 PetriNetUnfolderBase]: For 195856/195892 co-relation queries the response was YES. [2024-06-28 04:00:25,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34918 conditions, 5406 events. 3317/5406 cut-off events. For 195856/195892 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 33546 event pairs, 1161 based on Foata normal form. 36/5438 useless extension candidates. Maximal degree in co-relation 34798. Up to 5036 conditions per place. [2024-06-28 04:00:25,079 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 342 selfloop transitions, 45 changer transitions 0/405 dead transitions. [2024-06-28 04:00:25,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 405 transitions, 5568 flow [2024-06-28 04:00:25,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:00:25,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:00:25,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-28 04:00:25,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3877551020408163 [2024-06-28 04:00:25,080 INFO L175 Difference]: Start difference. First operand has 260 places, 387 transitions, 4702 flow. Second operand 7 states and 114 transitions. [2024-06-28 04:00:25,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 405 transitions, 5568 flow [2024-06-28 04:00:25,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 405 transitions, 5512 flow, removed 27 selfloop flow, removed 1 redundant places. [2024-06-28 04:00:25,427 INFO L231 Difference]: Finished difference. Result has 266 places, 390 transitions, 4793 flow [2024-06-28 04:00:25,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4646, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4793, PETRI_PLACES=266, PETRI_TRANSITIONS=390} [2024-06-28 04:00:25,428 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 223 predicate places. [2024-06-28 04:00:25,428 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 390 transitions, 4793 flow [2024-06-28 04:00:25,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 04:00:25,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:25,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:25,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 04:00:25,429 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:25,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:25,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1647685768, now seen corresponding path program 2 times [2024-06-28 04:00:25,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:25,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188794265] [2024-06-28 04:00:25,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:25,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:25,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:27,654 INFO 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 04:00:27,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:27,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188794265] [2024-06-28 04:00:27,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188794265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:27,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:27,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:27,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54336818] [2024-06-28 04:00:27,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:27,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:27,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:27,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:27,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:27,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:00:27,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 390 transitions, 4793 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:00:27,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:27,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:00:27,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:29,491 INFO L124 PetriNetUnfolderBase]: 3392/5494 cut-off events. [2024-06-28 04:00:29,492 INFO L125 PetriNetUnfolderBase]: For 204556/204560 co-relation queries the response was YES. [2024-06-28 04:00:29,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36099 conditions, 5494 events. 3392/5494 cut-off events. For 204556/204560 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 34072 event pairs, 1740 based on Foata normal form. 6/5500 useless extension candidates. Maximal degree in co-relation 35976. Up to 5304 conditions per place. [2024-06-28 04:00:29,547 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 382 selfloop transitions, 20 changer transitions 0/406 dead transitions. [2024-06-28 04:00:29,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 406 transitions, 5689 flow [2024-06-28 04:00:29,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:00:29,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:00:29,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 105 transitions. [2024-06-28 04:00:29,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-28 04:00:29,548 INFO L175 Difference]: Start difference. First operand has 266 places, 390 transitions, 4793 flow. Second operand 7 states and 105 transitions. [2024-06-28 04:00:29,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 406 transitions, 5689 flow [2024-06-28 04:00:30,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 406 transitions, 5566 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 04:00:30,098 INFO L231 Difference]: Finished difference. Result has 268 places, 393 transitions, 4771 flow [2024-06-28 04:00:30,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4670, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4771, PETRI_PLACES=268, PETRI_TRANSITIONS=393} [2024-06-28 04:00:30,099 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 225 predicate places. [2024-06-28 04:00:30,099 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 393 transitions, 4771 flow [2024-06-28 04:00:30,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:00:30,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:30,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:30,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 04:00:30,100 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:30,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:30,100 INFO L85 PathProgramCache]: Analyzing trace with hash 674408218, now seen corresponding path program 3 times [2024-06-28 04:00:30,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:30,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295555855] [2024-06-28 04:00:30,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:30,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:32,559 INFO 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 04:00:32,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:32,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295555855] [2024-06-28 04:00:32,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295555855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:32,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:32,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:32,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419607310] [2024-06-28 04:00:32,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:32,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:32,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:32,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:32,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:32,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:00:32,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 393 transitions, 4771 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:00:32,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:32,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:00:32,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:34,266 INFO L124 PetriNetUnfolderBase]: 3386/5487 cut-off events. [2024-06-28 04:00:34,266 INFO L125 PetriNetUnfolderBase]: For 208009/208013 co-relation queries the response was YES. [2024-06-28 04:00:34,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35951 conditions, 5487 events. 3386/5487 cut-off events. For 208009/208013 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 33965 event pairs, 1739 based on Foata normal form. 6/5493 useless extension candidates. Maximal degree in co-relation 35827. Up to 5287 conditions per place. [2024-06-28 04:00:34,330 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 382 selfloop transitions, 24 changer transitions 0/410 dead transitions. [2024-06-28 04:00:34,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 410 transitions, 5653 flow [2024-06-28 04:00:34,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:00:34,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:00:34,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 107 transitions. [2024-06-28 04:00:34,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36394557823129253 [2024-06-28 04:00:34,331 INFO L175 Difference]: Start difference. First operand has 268 places, 393 transitions, 4771 flow. Second operand 7 states and 107 transitions. [2024-06-28 04:00:34,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 410 transitions, 5653 flow [2024-06-28 04:00:34,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 410 transitions, 5543 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-28 04:00:34,763 INFO L231 Difference]: Finished difference. Result has 271 places, 396 transitions, 4750 flow [2024-06-28 04:00:34,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4665, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4750, PETRI_PLACES=271, PETRI_TRANSITIONS=396} [2024-06-28 04:00:34,763 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 228 predicate places. [2024-06-28 04:00:34,763 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 396 transitions, 4750 flow [2024-06-28 04:00:34,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:00:34,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:34,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:34,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 04:00:34,764 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:34,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:34,764 INFO L85 PathProgramCache]: Analyzing trace with hash 674408063, now seen corresponding path program 3 times [2024-06-28 04:00:34,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:34,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966172460] [2024-06-28 04:00:34,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:34,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:37,832 INFO 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 04:00:37,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:37,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966172460] [2024-06-28 04:00:37,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966172460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:37,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:37,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:37,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308969296] [2024-06-28 04:00:37,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:37,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:37,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:37,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:37,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:37,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:00:37,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 396 transitions, 4750 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 04:00:37,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:37,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:00:37,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:39,663 INFO L124 PetriNetUnfolderBase]: 3356/5455 cut-off events. [2024-06-28 04:00:39,663 INFO L125 PetriNetUnfolderBase]: For 210480/210496 co-relation queries the response was YES. [2024-06-28 04:00:39,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35802 conditions, 5455 events. 3356/5455 cut-off events. For 210480/210496 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 33670 event pairs, 1139 based on Foata normal form. 17/5468 useless extension candidates. Maximal degree in co-relation 35677. Up to 5122 conditions per place. [2024-06-28 04:00:39,723 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 353 selfloop transitions, 51 changer transitions 0/425 dead transitions. [2024-06-28 04:00:39,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 425 transitions, 5744 flow [2024-06-28 04:00:39,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:00:39,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:00:39,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions. [2024-06-28 04:00:39,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3544973544973545 [2024-06-28 04:00:39,724 INFO L175 Difference]: Start difference. First operand has 271 places, 396 transitions, 4750 flow. Second operand 9 states and 134 transitions. [2024-06-28 04:00:39,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 425 transitions, 5744 flow [2024-06-28 04:00:40,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 425 transitions, 5715 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 04:00:40,202 INFO L231 Difference]: Finished difference. Result has 278 places, 409 transitions, 4989 flow [2024-06-28 04:00:40,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4722, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4989, PETRI_PLACES=278, PETRI_TRANSITIONS=409} [2024-06-28 04:00:40,202 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 235 predicate places. [2024-06-28 04:00:40,203 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 409 transitions, 4989 flow [2024-06-28 04:00:40,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 04:00:40,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:40,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:40,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 04:00:40,203 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:40,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:40,204 INFO L85 PathProgramCache]: Analyzing trace with hash 290045311, now seen corresponding path program 4 times [2024-06-28 04:00:40,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:40,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114599416] [2024-06-28 04:00:40,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:40,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:42,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:42,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:42,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114599416] [2024-06-28 04:00:42,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114599416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:42,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:42,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:42,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196317154] [2024-06-28 04:00:42,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:42,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:42,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:42,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:42,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:42,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:00:42,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 409 transitions, 4989 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 04:00:42,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:42,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:00:42,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:44,729 INFO L124 PetriNetUnfolderBase]: 3348/5449 cut-off events. [2024-06-28 04:00:44,730 INFO L125 PetriNetUnfolderBase]: For 215010/215040 co-relation queries the response was YES. [2024-06-28 04:00:44,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35943 conditions, 5449 events. 3348/5449 cut-off events. For 215010/215040 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 33759 event pairs, 1155 based on Foata normal form. 23/5468 useless extension candidates. Maximal degree in co-relation 35815. Up to 5116 conditions per place. [2024-06-28 04:00:44,786 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 350 selfloop transitions, 50 changer transitions 0/421 dead transitions. [2024-06-28 04:00:44,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 421 transitions, 5823 flow [2024-06-28 04:00:44,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:00:44,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:00:44,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-06-28 04:00:44,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3601190476190476 [2024-06-28 04:00:44,787 INFO L175 Difference]: Start difference. First operand has 278 places, 409 transitions, 4989 flow. Second operand 8 states and 121 transitions. [2024-06-28 04:00:44,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 421 transitions, 5823 flow [2024-06-28 04:00:45,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 421 transitions, 5687 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-06-28 04:00:45,227 INFO L231 Difference]: Finished difference. Result has 282 places, 409 transitions, 4960 flow [2024-06-28 04:00:45,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4853, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4960, PETRI_PLACES=282, PETRI_TRANSITIONS=409} [2024-06-28 04:00:45,228 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 239 predicate places. [2024-06-28 04:00:45,228 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 409 transitions, 4960 flow [2024-06-28 04:00:45,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 04:00:45,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:45,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:45,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 04:00:45,229 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:45,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:45,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1070329730, now seen corresponding path program 1 times [2024-06-28 04:00:45,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:45,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852753275] [2024-06-28 04:00:45,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:45,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:45,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:47,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:47,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:47,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852753275] [2024-06-28 04:00:47,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852753275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:47,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:47,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:47,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383017972] [2024-06-28 04:00:47,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:47,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:47,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:47,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:47,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:47,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:00:47,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 409 transitions, 4960 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:00:47,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:47,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:00:47,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:49,093 INFO L124 PetriNetUnfolderBase]: 3431/5539 cut-off events. [2024-06-28 04:00:49,093 INFO L125 PetriNetUnfolderBase]: For 224837/224845 co-relation queries the response was YES. [2024-06-28 04:00:49,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36647 conditions, 5539 events. 3431/5539 cut-off events. For 224837/224845 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 34151 event pairs, 1089 based on Foata normal form. 10/5549 useless extension candidates. Maximal degree in co-relation 36519. Up to 5205 conditions per place. [2024-06-28 04:00:49,160 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 388 selfloop transitions, 62 changer transitions 0/454 dead transitions. [2024-06-28 04:00:49,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 454 transitions, 6142 flow [2024-06-28 04:00:49,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:00:49,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:00:49,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 04:00:49,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41534391534391535 [2024-06-28 04:00:49,162 INFO L175 Difference]: Start difference. First operand has 282 places, 409 transitions, 4960 flow. Second operand 9 states and 157 transitions. [2024-06-28 04:00:49,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 454 transitions, 6142 flow [2024-06-28 04:00:49,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 454 transitions, 6001 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 04:00:49,693 INFO L231 Difference]: Finished difference. Result has 284 places, 413 transitions, 5005 flow [2024-06-28 04:00:49,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4819, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5005, PETRI_PLACES=284, PETRI_TRANSITIONS=413} [2024-06-28 04:00:49,694 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 241 predicate places. [2024-06-28 04:00:49,694 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 413 transitions, 5005 flow [2024-06-28 04:00:49,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:00:49,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:49,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:49,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 04:00:49,694 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:49,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:49,694 INFO L85 PathProgramCache]: Analyzing trace with hash 9530074, now seen corresponding path program 2 times [2024-06-28 04:00:49,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:49,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137699336] [2024-06-28 04:00:49,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:49,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:52,001 INFO 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 04:00:52,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:52,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137699336] [2024-06-28 04:00:52,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137699336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:52,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:52,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:52,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659808771] [2024-06-28 04:00:52,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:52,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:52,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:52,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:52,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:52,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:00:52,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 413 transitions, 5005 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:00:52,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:52,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:00:52,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:53,857 INFO L124 PetriNetUnfolderBase]: 3426/5532 cut-off events. [2024-06-28 04:00:53,857 INFO L125 PetriNetUnfolderBase]: For 229396/229404 co-relation queries the response was YES. [2024-06-28 04:00:53,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36769 conditions, 5532 events. 3426/5532 cut-off events. For 229396/229404 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 34049 event pairs, 1114 based on Foata normal form. 10/5542 useless extension candidates. Maximal degree in co-relation 36641. Up to 5261 conditions per place. [2024-06-28 04:00:53,920 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 383 selfloop transitions, 59 changer transitions 0/446 dead transitions. [2024-06-28 04:00:53,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 446 transitions, 5989 flow [2024-06-28 04:00:53,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:00:53,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:00:53,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 04:00:53,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3915343915343915 [2024-06-28 04:00:53,922 INFO L175 Difference]: Start difference. First operand has 284 places, 413 transitions, 5005 flow. Second operand 9 states and 148 transitions. [2024-06-28 04:00:53,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 446 transitions, 5989 flow [2024-06-28 04:00:54,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 446 transitions, 5880 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 04:00:54,499 INFO L231 Difference]: Finished difference. Result has 288 places, 413 transitions, 5020 flow [2024-06-28 04:00:54,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4896, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5020, PETRI_PLACES=288, PETRI_TRANSITIONS=413} [2024-06-28 04:00:54,500 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 245 predicate places. [2024-06-28 04:00:54,500 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 413 transitions, 5020 flow [2024-06-28 04:00:54,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:00:54,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:54,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:54,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 04:00:54,500 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:54,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:54,501 INFO L85 PathProgramCache]: Analyzing trace with hash -113180192, now seen corresponding path program 3 times [2024-06-28 04:00:54,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:54,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727954999] [2024-06-28 04:00:54,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:54,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:56,499 INFO 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 04:00:56,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:56,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727954999] [2024-06-28 04:00:56,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727954999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:56,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:56,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:56,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967145656] [2024-06-28 04:00:56,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:56,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:56,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:56,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:56,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:56,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:00:56,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 413 transitions, 5020 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:00:56,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:56,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:00:56,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:58,508 INFO L124 PetriNetUnfolderBase]: 3442/5555 cut-off events. [2024-06-28 04:00:58,509 INFO L125 PetriNetUnfolderBase]: For 236473/236481 co-relation queries the response was YES. [2024-06-28 04:00:58,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37088 conditions, 5555 events. 3442/5555 cut-off events. For 236473/236481 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 34057 event pairs, 865 based on Foata normal form. 10/5565 useless extension candidates. Maximal degree in co-relation 36958. Up to 5122 conditions per place. [2024-06-28 04:00:58,577 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 387 selfloop transitions, 69 changer transitions 0/460 dead transitions. [2024-06-28 04:00:58,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 460 transitions, 6240 flow [2024-06-28 04:00:58,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:00:58,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:00:58,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 04:00:58,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-28 04:00:58,580 INFO L175 Difference]: Start difference. First operand has 288 places, 413 transitions, 5020 flow. Second operand 9 states and 154 transitions. [2024-06-28 04:00:58,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 460 transitions, 6240 flow [2024-06-28 04:00:59,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 460 transitions, 6136 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 04:00:59,107 INFO L231 Difference]: Finished difference. Result has 292 places, 420 transitions, 5167 flow [2024-06-28 04:00:59,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4916, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5167, PETRI_PLACES=292, PETRI_TRANSITIONS=420} [2024-06-28 04:00:59,107 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 249 predicate places. [2024-06-28 04:00:59,107 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 420 transitions, 5167 flow [2024-06-28 04:00:59,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:00:59,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:59,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:59,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 04:00:59,108 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:59,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:59,108 INFO L85 PathProgramCache]: Analyzing trace with hash 804244642, now seen corresponding path program 1 times [2024-06-28 04:00:59,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:59,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624780923] [2024-06-28 04:00:59,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:59,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:01,146 INFO 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 04:01:01,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:01,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624780923] [2024-06-28 04:01:01,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624780923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:01,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:01,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:01:01,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041633745] [2024-06-28 04:01:01,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:01,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:01:01,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:01,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:01:01,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:01:01,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:01:01,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 420 transitions, 5167 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:01:01,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:01,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:01:01,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:03,153 INFO L124 PetriNetUnfolderBase]: 3463/5577 cut-off events. [2024-06-28 04:01:03,153 INFO L125 PetriNetUnfolderBase]: For 247150/247171 co-relation queries the response was YES. [2024-06-28 04:01:03,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37858 conditions, 5577 events. 3463/5577 cut-off events. For 247150/247171 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 34265 event pairs, 805 based on Foata normal form. 22/5599 useless extension candidates. Maximal degree in co-relation 37726. Up to 5096 conditions per place. [2024-06-28 04:01:03,216 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 360 selfloop transitions, 107 changer transitions 0/471 dead transitions. [2024-06-28 04:01:03,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 471 transitions, 6789 flow [2024-06-28 04:01:03,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:01:03,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:01:03,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 04:01:03,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-28 04:01:03,218 INFO L175 Difference]: Start difference. First operand has 292 places, 420 transitions, 5167 flow. Second operand 9 states and 161 transitions. [2024-06-28 04:01:03,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 471 transitions, 6789 flow [2024-06-28 04:01:03,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 471 transitions, 6663 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-28 04:01:03,762 INFO L231 Difference]: Finished difference. Result has 296 places, 432 transitions, 5501 flow [2024-06-28 04:01:03,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5049, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5501, PETRI_PLACES=296, PETRI_TRANSITIONS=432} [2024-06-28 04:01:03,762 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 253 predicate places. [2024-06-28 04:01:03,763 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 432 transitions, 5501 flow [2024-06-28 04:01:03,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:01:03,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:03,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:03,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 04:01:03,763 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:03,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:03,764 INFO L85 PathProgramCache]: Analyzing trace with hash 2061577772, now seen corresponding path program 2 times [2024-06-28 04:01:03,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:03,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891286822] [2024-06-28 04:01:03,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:03,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:05,786 INFO 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 04:01:05,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:05,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891286822] [2024-06-28 04:01:05,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891286822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:05,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:05,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:01:05,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442150037] [2024-06-28 04:01:05,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:05,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:01:05,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:05,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:01:05,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:01:05,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:01:05,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 432 transitions, 5501 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:01:05,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:05,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:01:05,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:07,809 INFO L124 PetriNetUnfolderBase]: 3460/5576 cut-off events. [2024-06-28 04:01:07,809 INFO L125 PetriNetUnfolderBase]: For 254503/254524 co-relation queries the response was YES. [2024-06-28 04:01:07,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38295 conditions, 5576 events. 3460/5576 cut-off events. For 254503/254524 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 34323 event pairs, 813 based on Foata normal form. 22/5598 useless extension candidates. Maximal degree in co-relation 38161. Up to 5093 conditions per place. [2024-06-28 04:01:07,880 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 351 selfloop transitions, 111 changer transitions 0/466 dead transitions. [2024-06-28 04:01:07,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 466 transitions, 6755 flow [2024-06-28 04:01:07,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:01:07,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:01:07,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 04:01:07,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41005291005291006 [2024-06-28 04:01:07,881 INFO L175 Difference]: Start difference. First operand has 296 places, 432 transitions, 5501 flow. Second operand 9 states and 155 transitions. [2024-06-28 04:01:07,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 466 transitions, 6755 flow [2024-06-28 04:01:08,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 466 transitions, 6607 flow, removed 53 selfloop flow, removed 4 redundant places. [2024-06-28 04:01:08,484 INFO L231 Difference]: Finished difference. Result has 301 places, 432 transitions, 5582 flow [2024-06-28 04:01:08,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5353, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5582, PETRI_PLACES=301, PETRI_TRANSITIONS=432} [2024-06-28 04:01:08,485 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 258 predicate places. [2024-06-28 04:01:08,485 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 432 transitions, 5582 flow [2024-06-28 04:01:08,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:01:08,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:08,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:08,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 04:01:08,485 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:08,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:08,485 INFO L85 PathProgramCache]: Analyzing trace with hash -227669350, now seen corresponding path program 4 times [2024-06-28 04:01:08,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:08,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103861350] [2024-06-28 04:01:08,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:08,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:08,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:10,794 INFO 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 04:01:10,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:10,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103861350] [2024-06-28 04:01:10,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103861350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:10,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:10,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:01:10,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991763181] [2024-06-28 04:01:10,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:10,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:01:10,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:10,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:01:10,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:01:10,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:01:10,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 432 transitions, 5582 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:01:10,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:10,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:01:10,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:12,866 INFO L124 PetriNetUnfolderBase]: 3555/5721 cut-off events. [2024-06-28 04:01:12,867 INFO L125 PetriNetUnfolderBase]: For 268631/268639 co-relation queries the response was YES. [2024-06-28 04:01:12,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39459 conditions, 5721 events. 3555/5721 cut-off events. For 268631/268639 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 35276 event pairs, 839 based on Foata normal form. 10/5731 useless extension candidates. Maximal degree in co-relation 39325. Up to 5368 conditions per place. [2024-06-28 04:01:12,932 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 415 selfloop transitions, 68 changer transitions 0/487 dead transitions. [2024-06-28 04:01:12,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 487 transitions, 6958 flow [2024-06-28 04:01:12,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:01:12,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:01:12,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 04:01:12,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41534391534391535 [2024-06-28 04:01:12,934 INFO L175 Difference]: Start difference. First operand has 301 places, 432 transitions, 5582 flow. Second operand 9 states and 157 transitions. [2024-06-28 04:01:12,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 487 transitions, 6958 flow [2024-06-28 04:01:13,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 487 transitions, 6730 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 04:01:13,542 INFO L231 Difference]: Finished difference. Result has 304 places, 448 transitions, 5723 flow [2024-06-28 04:01:13,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5354, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5723, PETRI_PLACES=304, PETRI_TRANSITIONS=448} [2024-06-28 04:01:13,542 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 261 predicate places. [2024-06-28 04:01:13,542 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 448 transitions, 5723 flow [2024-06-28 04:01:13,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:01:13,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:13,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:13,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 04:01:13,543 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:13,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:13,543 INFO L85 PathProgramCache]: Analyzing trace with hash -219098470, now seen corresponding path program 5 times [2024-06-28 04:01:13,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:13,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500919011] [2024-06-28 04:01:13,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:13,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:15,995 INFO 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 04:01:15,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:15,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500919011] [2024-06-28 04:01:15,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500919011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:15,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:15,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:01:15,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167241249] [2024-06-28 04:01:15,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:15,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:01:15,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:15,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:01:15,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:01:16,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:01:16,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 448 transitions, 5723 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:01:16,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:16,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:01:16,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:18,029 INFO L124 PetriNetUnfolderBase]: 3571/5760 cut-off events. [2024-06-28 04:01:18,029 INFO L125 PetriNetUnfolderBase]: For 281017/281031 co-relation queries the response was YES. [2024-06-28 04:01:18,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39795 conditions, 5760 events. 3571/5760 cut-off events. For 281017/281031 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 35617 event pairs, 1146 based on Foata normal form. 18/5778 useless extension candidates. Maximal degree in co-relation 39659. Up to 5467 conditions per place. [2024-06-28 04:01:18,091 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 405 selfloop transitions, 62 changer transitions 0/471 dead transitions. [2024-06-28 04:01:18,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 471 transitions, 6773 flow [2024-06-28 04:01:18,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:01:18,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:01:18,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions. [2024-06-28 04:01:18,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-28 04:01:18,092 INFO L175 Difference]: Start difference. First operand has 304 places, 448 transitions, 5723 flow. Second operand 7 states and 112 transitions. [2024-06-28 04:01:18,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 471 transitions, 6773 flow [2024-06-28 04:01:18,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 471 transitions, 6700 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 04:01:18,816 INFO L231 Difference]: Finished difference. Result has 306 places, 452 transitions, 5854 flow [2024-06-28 04:01:18,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5650, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5854, PETRI_PLACES=306, PETRI_TRANSITIONS=452} [2024-06-28 04:01:18,816 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 263 predicate places. [2024-06-28 04:01:18,816 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 452 transitions, 5854 flow [2024-06-28 04:01:18,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:01:18,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:18,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:18,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 04:01:18,817 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:18,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:18,817 INFO L85 PathProgramCache]: Analyzing trace with hash -549660508, now seen corresponding path program 6 times [2024-06-28 04:01:18,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:18,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705093698] [2024-06-28 04:01:18,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:18,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:21,141 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 04:01:21,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:21,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705093698] [2024-06-28 04:01:21,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705093698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:21,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:21,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:01:21,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538179111] [2024-06-28 04:01:21,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:21,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:01:21,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:21,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:01:21,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:01:21,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:01:21,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 452 transitions, 5854 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:01:21,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:21,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:01:21,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:23,026 INFO L124 PetriNetUnfolderBase]: 3574/5744 cut-off events. [2024-06-28 04:01:23,026 INFO L125 PetriNetUnfolderBase]: For 284514/284522 co-relation queries the response was YES. [2024-06-28 04:01:23,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40035 conditions, 5744 events. 3574/5744 cut-off events. For 284514/284522 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 35148 event pairs, 840 based on Foata normal form. 5/5749 useless extension candidates. Maximal degree in co-relation 39897. Up to 5484 conditions per place. [2024-06-28 04:01:23,094 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 404 selfloop transitions, 58 changer transitions 0/466 dead transitions. [2024-06-28 04:01:23,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 466 transitions, 6844 flow [2024-06-28 04:01:23,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:01:23,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:01:23,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 105 transitions. [2024-06-28 04:01:23,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-28 04:01:23,095 INFO L175 Difference]: Start difference. First operand has 306 places, 452 transitions, 5854 flow. Second operand 7 states and 105 transitions. [2024-06-28 04:01:23,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 466 transitions, 6844 flow [2024-06-28 04:01:23,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 466 transitions, 6696 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 04:01:23,765 INFO L231 Difference]: Finished difference. Result has 307 places, 454 transitions, 5866 flow [2024-06-28 04:01:23,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5706, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5866, PETRI_PLACES=307, PETRI_TRANSITIONS=454} [2024-06-28 04:01:23,766 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 264 predicate places. [2024-06-28 04:01:23,766 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 454 transitions, 5866 flow [2024-06-28 04:01:23,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:01:23,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:23,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:23,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 04:01:23,767 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:23,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:23,768 INFO L85 PathProgramCache]: Analyzing trace with hash -52631236, now seen corresponding path program 3 times [2024-06-28 04:01:23,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:23,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444461648] [2024-06-28 04:01:23,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:23,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:25,999 INFO 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 04:01:25,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:25,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444461648] [2024-06-28 04:01:25,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444461648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:25,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:25,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:01:26,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703467278] [2024-06-28 04:01:26,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:26,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:01:26,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:26,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:01:26,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:01:26,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:01:26,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 454 transitions, 5866 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:01:26,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:26,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:01:26,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:28,072 INFO L124 PetriNetUnfolderBase]: 3592/5785 cut-off events. [2024-06-28 04:01:28,072 INFO L125 PetriNetUnfolderBase]: For 283670/283703 co-relation queries the response was YES. [2024-06-28 04:01:28,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40274 conditions, 5785 events. 3592/5785 cut-off events. For 283670/283703 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 35723 event pairs, 835 based on Foata normal form. 35/5820 useless extension candidates. Maximal degree in co-relation 40136. Up to 5292 conditions per place. [2024-06-28 04:01:28,141 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 367 selfloop transitions, 118 changer transitions 0/489 dead transitions. [2024-06-28 04:01:28,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 489 transitions, 7348 flow [2024-06-28 04:01:28,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:01:28,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:01:28,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-28 04:01:28,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41156462585034015 [2024-06-28 04:01:28,143 INFO L175 Difference]: Start difference. First operand has 307 places, 454 transitions, 5866 flow. Second operand 7 states and 121 transitions. [2024-06-28 04:01:28,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 489 transitions, 7348 flow [2024-06-28 04:01:28,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 489 transitions, 7210 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 04:01:28,852 INFO L231 Difference]: Finished difference. Result has 309 places, 463 transitions, 6156 flow [2024-06-28 04:01:28,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5728, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6156, PETRI_PLACES=309, PETRI_TRANSITIONS=463} [2024-06-28 04:01:28,852 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 266 predicate places. [2024-06-28 04:01:28,852 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 463 transitions, 6156 flow [2024-06-28 04:01:28,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:01:28,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:28,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:28,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 04:01:28,853 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:28,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:28,853 INFO L85 PathProgramCache]: Analyzing trace with hash -943204860, now seen corresponding path program 4 times [2024-06-28 04:01:28,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:28,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389662920] [2024-06-28 04:01:28,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:28,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:28,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:31,291 INFO 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 04:01:31,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:31,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389662920] [2024-06-28 04:01:31,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389662920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:31,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:31,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:01:31,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545566381] [2024-06-28 04:01:31,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:31,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:01:31,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:31,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:01:31,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:01:31,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:01:31,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 463 transitions, 6156 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:01:31,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:31,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:01:31,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:33,627 INFO L124 PetriNetUnfolderBase]: 3659/5875 cut-off events. [2024-06-28 04:01:33,627 INFO L125 PetriNetUnfolderBase]: For 298902/298923 co-relation queries the response was YES. [2024-06-28 04:01:33,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41640 conditions, 5875 events. 3659/5875 cut-off events. For 298902/298923 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 36364 event pairs, 830 based on Foata normal form. 22/5897 useless extension candidates. Maximal degree in co-relation 41501. Up to 5366 conditions per place. [2024-06-28 04:01:33,692 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 377 selfloop transitions, 149 changer transitions 0/530 dead transitions. [2024-06-28 04:01:33,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 530 transitions, 8360 flow [2024-06-28 04:01:33,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:01:33,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:01:33,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 04:01:33,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41798941798941797 [2024-06-28 04:01:33,693 INFO L175 Difference]: Start difference. First operand has 309 places, 463 transitions, 6156 flow. Second operand 9 states and 158 transitions. [2024-06-28 04:01:33,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 530 transitions, 8360 flow [2024-06-28 04:01:34,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 530 transitions, 7980 flow, removed 109 selfloop flow, removed 4 redundant places. [2024-06-28 04:01:34,330 INFO L231 Difference]: Finished difference. Result has 315 places, 496 transitions, 6710 flow [2024-06-28 04:01:34,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5934, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6710, PETRI_PLACES=315, PETRI_TRANSITIONS=496} [2024-06-28 04:01:34,330 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 272 predicate places. [2024-06-28 04:01:34,331 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 496 transitions, 6710 flow [2024-06-28 04:01:34,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:01:34,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:34,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:34,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 04:01:34,331 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:34,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:34,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1849240058, now seen corresponding path program 5 times [2024-06-28 04:01:34,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:34,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376770487] [2024-06-28 04:01:34,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:34,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:36,575 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 04:01:36,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:36,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376770487] [2024-06-28 04:01:36,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376770487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:36,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:36,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:01:36,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725001194] [2024-06-28 04:01:36,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:36,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:01:36,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:36,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:01:36,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:01:36,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:01:36,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 496 transitions, 6710 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:01:36,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:36,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:01:36,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:38,503 INFO L124 PetriNetUnfolderBase]: 3655/5873 cut-off events. [2024-06-28 04:01:38,503 INFO L125 PetriNetUnfolderBase]: For 300052/300085 co-relation queries the response was YES. [2024-06-28 04:01:38,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41434 conditions, 5873 events. 3655/5873 cut-off events. For 300052/300085 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 36256 event pairs, 842 based on Foata normal form. 37/5910 useless extension candidates. Maximal degree in co-relation 41294. Up to 5464 conditions per place. [2024-06-28 04:01:38,575 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 406 selfloop transitions, 109 changer transitions 0/519 dead transitions. [2024-06-28 04:01:38,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 519 transitions, 8013 flow [2024-06-28 04:01:38,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:01:38,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:01:38,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-28 04:01:38,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 04:01:38,577 INFO L175 Difference]: Start difference. First operand has 315 places, 496 transitions, 6710 flow. Second operand 6 states and 105 transitions. [2024-06-28 04:01:38,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 519 transitions, 8013 flow [2024-06-28 04:01:39,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 519 transitions, 7744 flow, removed 68 selfloop flow, removed 3 redundant places. [2024-06-28 04:01:39,410 INFO L231 Difference]: Finished difference. Result has 318 places, 499 transitions, 6766 flow [2024-06-28 04:01:39,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6444, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6766, PETRI_PLACES=318, PETRI_TRANSITIONS=499} [2024-06-28 04:01:39,410 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 275 predicate places. [2024-06-28 04:01:39,411 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 499 transitions, 6766 flow [2024-06-28 04:01:39,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:01:39,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:39,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:39,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 04:01:39,411 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:39,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:39,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1156825092, now seen corresponding path program 6 times [2024-06-28 04:01:39,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:39,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972391061] [2024-06-28 04:01:39,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:39,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:39,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:41,910 INFO 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 04:01:41,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:41,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972391061] [2024-06-28 04:01:41,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972391061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:41,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:41,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:01:41,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886978418] [2024-06-28 04:01:41,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:41,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:01:41,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:41,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:01:41,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:01:41,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:01:41,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 499 transitions, 6766 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:01:41,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:41,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:01:41,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:44,270 INFO L124 PetriNetUnfolderBase]: 3649/5865 cut-off events. [2024-06-28 04:01:44,271 INFO L125 PetriNetUnfolderBase]: For 301613/301646 co-relation queries the response was YES. [2024-06-28 04:01:44,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41248 conditions, 5865 events. 3649/5865 cut-off events. For 301613/301646 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 36246 event pairs, 833 based on Foata normal form. 35/5900 useless extension candidates. Maximal degree in co-relation 41107. Up to 5458 conditions per place. [2024-06-28 04:01:44,347 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 398 selfloop transitions, 118 changer transitions 0/520 dead transitions. [2024-06-28 04:01:44,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 520 transitions, 7882 flow [2024-06-28 04:01:44,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:01:44,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:01:44,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-28 04:01:44,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37797619047619047 [2024-06-28 04:01:44,348 INFO L175 Difference]: Start difference. First operand has 318 places, 499 transitions, 6766 flow. Second operand 8 states and 127 transitions. [2024-06-28 04:01:44,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 520 transitions, 7882 flow [2024-06-28 04:01:45,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 520 transitions, 7572 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-06-28 04:01:45,140 INFO L231 Difference]: Finished difference. Result has 321 places, 499 transitions, 6712 flow [2024-06-28 04:01:45,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6456, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6712, PETRI_PLACES=321, PETRI_TRANSITIONS=499} [2024-06-28 04:01:45,141 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 278 predicate places. [2024-06-28 04:01:45,141 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 499 transitions, 6712 flow [2024-06-28 04:01:45,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:01:45,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:45,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:45,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 04:01:45,142 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:45,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:45,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1519354582, now seen corresponding path program 7 times [2024-06-28 04:01:45,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:45,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883250386] [2024-06-28 04:01:45,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:45,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:45,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:47,304 INFO 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 04:01:47,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:47,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883250386] [2024-06-28 04:01:47,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883250386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:47,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:47,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:01:47,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488451365] [2024-06-28 04:01:47,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:47,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:01:47,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:47,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:01:47,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:01:47,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:01:47,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 499 transitions, 6712 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:01:47,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:47,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:01:47,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:49,531 INFO L124 PetriNetUnfolderBase]: 3651/5862 cut-off events. [2024-06-28 04:01:49,531 INFO L125 PetriNetUnfolderBase]: For 299935/299962 co-relation queries the response was YES. [2024-06-28 04:01:49,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41153 conditions, 5862 events. 3651/5862 cut-off events. For 299935/299962 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 36086 event pairs, 871 based on Foata normal form. 15/5877 useless extension candidates. Maximal degree in co-relation 41012. Up to 5360 conditions per place. [2024-06-28 04:01:49,597 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 350 selfloop transitions, 160 changer transitions 0/514 dead transitions. [2024-06-28 04:01:49,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 514 transitions, 7944 flow [2024-06-28 04:01:49,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:01:49,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:01:49,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2024-06-28 04:01:49,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3707482993197279 [2024-06-28 04:01:49,598 INFO L175 Difference]: Start difference. First operand has 321 places, 499 transitions, 6712 flow. Second operand 7 states and 109 transitions. [2024-06-28 04:01:49,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 514 transitions, 7944 flow [2024-06-28 04:01:50,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 514 transitions, 7599 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-28 04:01:50,321 INFO L231 Difference]: Finished difference. Result has 320 places, 502 transitions, 6753 flow [2024-06-28 04:01:50,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6369, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6753, PETRI_PLACES=320, PETRI_TRANSITIONS=502} [2024-06-28 04:01:50,322 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 277 predicate places. [2024-06-28 04:01:50,322 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 502 transitions, 6753 flow [2024-06-28 04:01:50,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:01:50,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:50,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:50,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 04:01:50,322 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:50,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:50,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1518988162, now seen corresponding path program 1 times [2024-06-28 04:01:50,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:50,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548342926] [2024-06-28 04:01:50,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:50,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:53,424 INFO 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 04:01:53,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:53,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548342926] [2024-06-28 04:01:53,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548342926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:53,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:53,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:01:53,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823632874] [2024-06-28 04:01:53,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:53,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:01:53,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:53,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:01:53,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:01:53,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:01:53,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 502 transitions, 6753 flow. Second operand has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 04:01:53,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:53,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:01:53,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:55,774 INFO L124 PetriNetUnfolderBase]: 3517/5706 cut-off events. [2024-06-28 04:01:55,774 INFO L125 PetriNetUnfolderBase]: For 308423/308661 co-relation queries the response was YES. [2024-06-28 04:01:55,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39958 conditions, 5706 events. 3517/5706 cut-off events. For 308423/308661 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 35939 event pairs, 1121 based on Foata normal form. 199/5862 useless extension candidates. Maximal degree in co-relation 39817. Up to 5249 conditions per place. [2024-06-28 04:01:55,841 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 397 selfloop transitions, 64 changer transitions 0/517 dead transitions. [2024-06-28 04:01:55,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 517 transitions, 7755 flow [2024-06-28 04:01:55,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:01:55,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:01:55,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions. [2024-06-28 04:01:55,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-28 04:01:55,842 INFO L175 Difference]: Start difference. First operand has 320 places, 502 transitions, 6753 flow. Second operand 7 states and 112 transitions. [2024-06-28 04:01:55,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 517 transitions, 7755 flow [2024-06-28 04:01:56,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 517 transitions, 7493 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-28 04:01:56,551 INFO L231 Difference]: Finished difference. Result has 323 places, 504 transitions, 6676 flow [2024-06-28 04:01:56,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6491, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6676, PETRI_PLACES=323, PETRI_TRANSITIONS=504} [2024-06-28 04:01:56,552 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 280 predicate places. [2024-06-28 04:01:56,552 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 504 transitions, 6676 flow [2024-06-28 04:01:56,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 04:01:56,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:56,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:56,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 04:01:56,553 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:56,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:56,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1316682468, now seen corresponding path program 7 times [2024-06-28 04:01:56,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:56,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988407450] [2024-06-28 04:01:56,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:56,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:56,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:58,963 INFO 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 04:01:58,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:58,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988407450] [2024-06-28 04:01:58,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988407450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:58,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:58,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:01:58,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936884888] [2024-06-28 04:01:58,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:58,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:01:58,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:58,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:01:58,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:01:58,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:01:58,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 504 transitions, 6676 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:01:58,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:58,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:01:58,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:00,907 INFO L124 PetriNetUnfolderBase]: 3662/5891 cut-off events. [2024-06-28 04:02:00,907 INFO L125 PetriNetUnfolderBase]: For 303249/303263 co-relation queries the response was YES. [2024-06-28 04:02:00,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41205 conditions, 5891 events. 3662/5891 cut-off events. For 303249/303263 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 36400 event pairs, 890 based on Foata normal form. 16/5907 useless extension candidates. Maximal degree in co-relation 41063. Up to 5367 conditions per place. [2024-06-28 04:02:00,987 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 436 selfloop transitions, 88 changer transitions 0/528 dead transitions. [2024-06-28 04:02:00,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 528 transitions, 7800 flow [2024-06-28 04:02:00,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:02:00,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:02:00,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-28 04:02:00,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3979591836734694 [2024-06-28 04:02:00,988 INFO L175 Difference]: Start difference. First operand has 323 places, 504 transitions, 6676 flow. Second operand 7 states and 117 transitions. [2024-06-28 04:02:00,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 528 transitions, 7800 flow [2024-06-28 04:02:01,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 528 transitions, 7637 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 04:02:01,715 INFO L231 Difference]: Finished difference. Result has 325 places, 504 transitions, 6712 flow [2024-06-28 04:02:01,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6513, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6712, PETRI_PLACES=325, PETRI_TRANSITIONS=504} [2024-06-28 04:02:01,716 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 282 predicate places. [2024-06-28 04:02:01,716 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 504 transitions, 6712 flow [2024-06-28 04:02:01,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:02:01,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:01,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:01,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 04:02:01,716 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:01,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:01,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1325256324, now seen corresponding path program 8 times [2024-06-28 04:02:01,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:01,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887270315] [2024-06-28 04:02:01,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:01,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:04,105 INFO 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 04:02:04,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:04,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887270315] [2024-06-28 04:02:04,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887270315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:04,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:04,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:02:04,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528048064] [2024-06-28 04:02:04,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:04,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:02:04,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:04,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:02:04,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:02:04,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:02:04,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 504 transitions, 6712 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:02:04,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:04,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:02:04,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:06,293 INFO L124 PetriNetUnfolderBase]: 3659/5884 cut-off events. [2024-06-28 04:02:06,293 INFO L125 PetriNetUnfolderBase]: For 306844/306877 co-relation queries the response was YES. [2024-06-28 04:02:06,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41349 conditions, 5884 events. 3659/5884 cut-off events. For 306844/306877 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 36446 event pairs, 840 based on Foata normal form. 34/5918 useless extension candidates. Maximal degree in co-relation 41206. Up to 5374 conditions per place. [2024-06-28 04:02:06,368 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 357 selfloop transitions, 161 changer transitions 0/522 dead transitions. [2024-06-28 04:02:06,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 522 transitions, 7804 flow [2024-06-28 04:02:06,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:02:06,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:02:06,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-28 04:02:06,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391156462585034 [2024-06-28 04:02:06,370 INFO L175 Difference]: Start difference. First operand has 325 places, 504 transitions, 6712 flow. Second operand 7 states and 115 transitions. [2024-06-28 04:02:06,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 522 transitions, 7804 flow [2024-06-28 04:02:07,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 522 transitions, 7585 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-28 04:02:07,040 INFO L231 Difference]: Finished difference. Result has 325 places, 504 transitions, 6833 flow [2024-06-28 04:02:07,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6493, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6833, PETRI_PLACES=325, PETRI_TRANSITIONS=504} [2024-06-28 04:02:07,041 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 282 predicate places. [2024-06-28 04:02:07,041 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 504 transitions, 6833 flow [2024-06-28 04:02:07,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:02:07,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:07,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:07,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 04:02:07,042 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:07,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:07,042 INFO L85 PathProgramCache]: Analyzing trace with hash 623837400, now seen corresponding path program 2 times [2024-06-28 04:02:07,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:07,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053505965] [2024-06-28 04:02:07,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:07,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:10,639 INFO 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 04:02:10,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:10,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053505965] [2024-06-28 04:02:10,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053505965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:10,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:10,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:02:10,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352905093] [2024-06-28 04:02:10,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:10,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:02:10,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:10,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:02:10,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:02:10,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:02:10,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 504 transitions, 6833 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 04:02:10,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:10,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:02:10,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:12,864 INFO L124 PetriNetUnfolderBase]: 3521/5715 cut-off events. [2024-06-28 04:02:12,864 INFO L125 PetriNetUnfolderBase]: For 304298/304536 co-relation queries the response was YES. [2024-06-28 04:02:12,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39937 conditions, 5715 events. 3521/5715 cut-off events. For 304298/304536 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 36012 event pairs, 1123 based on Foata normal form. 199/5871 useless extension candidates. Maximal degree in co-relation 39795. Up to 5258 conditions per place. [2024-06-28 04:02:12,937 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 398 selfloop transitions, 67 changer transitions 0/521 dead transitions. [2024-06-28 04:02:12,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 521 transitions, 7853 flow [2024-06-28 04:02:12,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:02:12,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:02:12,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-28 04:02:12,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-06-28 04:02:12,938 INFO L175 Difference]: Start difference. First operand has 325 places, 504 transitions, 6833 flow. Second operand 8 states and 124 transitions. [2024-06-28 04:02:12,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 521 transitions, 7853 flow [2024-06-28 04:02:13,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 521 transitions, 7373 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 04:02:13,604 INFO L231 Difference]: Finished difference. Result has 324 places, 506 transitions, 6543 flow [2024-06-28 04:02:13,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6353, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6543, PETRI_PLACES=324, PETRI_TRANSITIONS=506} [2024-06-28 04:02:13,605 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 281 predicate places. [2024-06-28 04:02:13,605 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 506 transitions, 6543 flow [2024-06-28 04:02:13,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 04:02:13,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:13,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:13,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 04:02:13,605 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:13,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:13,606 INFO L85 PathProgramCache]: Analyzing trace with hash 767160382, now seen corresponding path program 3 times [2024-06-28 04:02:13,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:13,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734653164] [2024-06-28 04:02:13,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:13,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:17,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:02:17,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:17,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734653164] [2024-06-28 04:02:17,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734653164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:17,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:17,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:02:17,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356733706] [2024-06-28 04:02:17,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:17,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:02:17,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:17,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:02:17,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:02:17,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:02:17,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 506 transitions, 6543 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 04:02:17,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:17,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:02:17,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:19,170 INFO L124 PetriNetUnfolderBase]: 3511/5701 cut-off events. [2024-06-28 04:02:19,170 INFO L125 PetriNetUnfolderBase]: For 287204/287442 co-relation queries the response was YES. [2024-06-28 04:02:19,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39216 conditions, 5701 events. 3511/5701 cut-off events. For 287204/287442 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 35964 event pairs, 1117 based on Foata normal form. 199/5857 useless extension candidates. Maximal degree in co-relation 39075. Up to 5204 conditions per place. [2024-06-28 04:02:19,239 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 398 selfloop transitions, 69 changer transitions 0/523 dead transitions. [2024-06-28 04:02:19,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 523 transitions, 7569 flow [2024-06-28 04:02:19,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:02:19,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:02:19,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-28 04:02:19,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-06-28 04:02:19,241 INFO L175 Difference]: Start difference. First operand has 324 places, 506 transitions, 6543 flow. Second operand 8 states and 124 transitions. [2024-06-28 04:02:19,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 523 transitions, 7569 flow [2024-06-28 04:02:19,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 523 transitions, 7397 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 04:02:19,912 INFO L231 Difference]: Finished difference. Result has 326 places, 508 transitions, 6568 flow [2024-06-28 04:02:19,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6371, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6568, PETRI_PLACES=326, PETRI_TRANSITIONS=508} [2024-06-28 04:02:19,913 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 283 predicate places. [2024-06-28 04:02:19,913 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 508 transitions, 6568 flow [2024-06-28 04:02:19,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 04:02:19,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:19,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:19,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 04:02:19,914 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:19,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:19,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1857385856, now seen corresponding path program 1 times [2024-06-28 04:02:19,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:19,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597647099] [2024-06-28 04:02:19,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:19,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:19,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:22,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:02:22,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:22,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597647099] [2024-06-28 04:02:22,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597647099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:22,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:22,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:02:22,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311696091] [2024-06-28 04:02:22,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:22,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:02:22,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:22,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:02:22,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:02:22,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:02:22,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 508 transitions, 6568 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 04:02:22,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:22,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:02:22,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:24,823 INFO L124 PetriNetUnfolderBase]: 3627/5868 cut-off events. [2024-06-28 04:02:24,823 INFO L125 PetriNetUnfolderBase]: For 298827/298856 co-relation queries the response was YES. [2024-06-28 04:02:24,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40848 conditions, 5868 events. 3627/5868 cut-off events. For 298827/298856 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 36578 event pairs, 1033 based on Foata normal form. 32/5890 useless extension candidates. Maximal degree in co-relation 40706. Up to 5359 conditions per place. [2024-06-28 04:02:24,902 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 447 selfloop transitions, 71 changer transitions 0/539 dead transitions. [2024-06-28 04:02:24,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 539 transitions, 7912 flow [2024-06-28 04:02:24,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:02:24,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:02:24,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 04:02:24,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40773809523809523 [2024-06-28 04:02:24,904 INFO L175 Difference]: Start difference. First operand has 326 places, 508 transitions, 6568 flow. Second operand 8 states and 137 transitions. [2024-06-28 04:02:24,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 539 transitions, 7912 flow [2024-06-28 04:02:25,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 539 transitions, 7731 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 04:02:25,636 INFO L231 Difference]: Finished difference. Result has 328 places, 512 transitions, 6634 flow [2024-06-28 04:02:25,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6387, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6634, PETRI_PLACES=328, PETRI_TRANSITIONS=512} [2024-06-28 04:02:25,637 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 285 predicate places. [2024-06-28 04:02:25,637 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 512 transitions, 6634 flow [2024-06-28 04:02:25,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 04:02:25,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:25,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:25,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 04:02:25,637 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:25,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:25,638 INFO L85 PathProgramCache]: Analyzing trace with hash -686272832, now seen corresponding path program 2 times [2024-06-28 04:02:25,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:25,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580260263] [2024-06-28 04:02:25,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:25,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:25,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:28,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:02:28,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:28,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580260263] [2024-06-28 04:02:28,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580260263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:28,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:28,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:02:28,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262222177] [2024-06-28 04:02:28,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:28,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:02:28,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:28,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:02:28,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:02:28,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:02:28,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 512 transitions, 6634 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 04:02:28,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:28,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:02:28,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:30,821 INFO L124 PetriNetUnfolderBase]: 3639/5899 cut-off events. [2024-06-28 04:02:30,821 INFO L125 PetriNetUnfolderBase]: For 307887/307916 co-relation queries the response was YES. [2024-06-28 04:02:30,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41181 conditions, 5899 events. 3639/5899 cut-off events. For 307887/307916 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 37029 event pairs, 1197 based on Foata normal form. 32/5921 useless extension candidates. Maximal degree in co-relation 41038. Up to 5453 conditions per place. [2024-06-28 04:02:30,894 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 446 selfloop transitions, 68 changer transitions 0/535 dead transitions. [2024-06-28 04:02:30,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 535 transitions, 7782 flow [2024-06-28 04:02:30,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:02:30,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:02:30,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-28 04:02:30,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3898809523809524 [2024-06-28 04:02:30,896 INFO L175 Difference]: Start difference. First operand has 328 places, 512 transitions, 6634 flow. Second operand 8 states and 131 transitions. [2024-06-28 04:02:30,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 535 transitions, 7782 flow [2024-06-28 04:02:31,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 535 transitions, 7634 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-28 04:02:31,775 INFO L231 Difference]: Finished difference. Result has 332 places, 514 transitions, 6683 flow [2024-06-28 04:02:31,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6496, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6683, PETRI_PLACES=332, PETRI_TRANSITIONS=514} [2024-06-28 04:02:31,776 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 289 predicate places. [2024-06-28 04:02:31,776 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 514 transitions, 6683 flow [2024-06-28 04:02:31,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 04:02:31,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:31,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:31,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 04:02:31,776 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:31,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:31,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1435806050, now seen corresponding path program 1 times [2024-06-28 04:02:31,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:31,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822569692] [2024-06-28 04:02:31,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:31,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:34,641 INFO 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 04:02:34,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:34,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822569692] [2024-06-28 04:02:34,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822569692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:34,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:34,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:02:34,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717871847] [2024-06-28 04:02:34,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:34,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:02:34,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:34,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:02:34,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:02:34,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:02:34,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 514 transitions, 6683 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:34,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:34,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:02:34,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:36,771 INFO L124 PetriNetUnfolderBase]: 3749/6032 cut-off events. [2024-06-28 04:02:36,771 INFO L125 PetriNetUnfolderBase]: For 319231/319235 co-relation queries the response was YES. [2024-06-28 04:02:36,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42225 conditions, 6032 events. 3749/6032 cut-off events. For 319231/319235 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 37879 event pairs, 1802 based on Foata normal form. 6/6038 useless extension candidates. Maximal degree in co-relation 42080. Up to 5746 conditions per place. [2024-06-28 04:02:36,846 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 507 selfloop transitions, 46 changer transitions 0/557 dead transitions. [2024-06-28 04:02:36,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 557 transitions, 8322 flow [2024-06-28 04:02:36,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:02:36,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:02:36,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 04:02:36,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-28 04:02:36,848 INFO L175 Difference]: Start difference. First operand has 332 places, 514 transitions, 6683 flow. Second operand 8 states and 133 transitions. [2024-06-28 04:02:36,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 557 transitions, 8322 flow [2024-06-28 04:02:37,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 557 transitions, 8140 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 04:02:37,589 INFO L231 Difference]: Finished difference. Result has 337 places, 530 transitions, 6839 flow [2024-06-28 04:02:37,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6516, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6839, PETRI_PLACES=337, PETRI_TRANSITIONS=530} [2024-06-28 04:02:37,590 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 294 predicate places. [2024-06-28 04:02:37,590 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 530 transitions, 6839 flow [2024-06-28 04:02:37,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:37,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:37,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:37,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 04:02:37,590 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:37,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:37,590 INFO L85 PathProgramCache]: Analyzing trace with hash -683476322, now seen corresponding path program 3 times [2024-06-28 04:02:37,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:37,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052592392] [2024-06-28 04:02:37,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:37,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:37,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:41,526 INFO 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 04:02:41,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:41,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052592392] [2024-06-28 04:02:41,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052592392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:41,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:41,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:02:41,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143215268] [2024-06-28 04:02:41,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:41,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:02:41,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:41,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:02:41,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:02:41,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:02:41,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 530 transitions, 6839 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 04:02:41,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:41,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:02:41,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:43,597 INFO L124 PetriNetUnfolderBase]: 3663/5929 cut-off events. [2024-06-28 04:02:43,597 INFO L125 PetriNetUnfolderBase]: For 323533/323562 co-relation queries the response was YES. [2024-06-28 04:02:43,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41790 conditions, 5929 events. 3663/5929 cut-off events. For 323533/323562 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 37217 event pairs, 1195 based on Foata normal form. 32/5951 useless extension candidates. Maximal degree in co-relation 41641. Up to 5499 conditions per place. [2024-06-28 04:02:43,845 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 460 selfloop transitions, 64 changer transitions 0/549 dead transitions. [2024-06-28 04:02:43,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 549 transitions, 7991 flow [2024-06-28 04:02:43,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:02:43,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:02:43,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-28 04:02:43,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 04:02:43,847 INFO L175 Difference]: Start difference. First operand has 337 places, 530 transitions, 6839 flow. Second operand 8 states and 126 transitions. [2024-06-28 04:02:43,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 549 transitions, 7991 flow [2024-06-28 04:02:44,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 549 transitions, 7907 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-28 04:02:44,492 INFO L231 Difference]: Finished difference. Result has 342 places, 532 transitions, 6944 flow [2024-06-28 04:02:44,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6755, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6944, PETRI_PLACES=342, PETRI_TRANSITIONS=532} [2024-06-28 04:02:44,492 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 299 predicate places. [2024-06-28 04:02:44,492 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 532 transitions, 6944 flow [2024-06-28 04:02:44,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 04:02:44,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:44,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:44,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 04:02:44,493 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:44,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:44,493 INFO L85 PathProgramCache]: Analyzing trace with hash -683476198, now seen corresponding path program 2 times [2024-06-28 04:02:44,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:44,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910903563] [2024-06-28 04:02:44,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:44,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:44,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:48,653 INFO 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 04:02:48,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:48,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910903563] [2024-06-28 04:02:48,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910903563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:48,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:48,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:02:48,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165213512] [2024-06-28 04:02:48,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:48,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:02:48,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:48,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:02:48,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:02:48,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:02:48,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 532 transitions, 6944 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:48,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:48,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:02:48,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:50,498 INFO L124 PetriNetUnfolderBase]: 3749/6032 cut-off events. [2024-06-28 04:02:50,499 INFO L125 PetriNetUnfolderBase]: For 328914/328918 co-relation queries the response was YES. [2024-06-28 04:02:50,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42737 conditions, 6032 events. 3749/6032 cut-off events. For 328914/328918 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 37901 event pairs, 1793 based on Foata normal form. 6/6038 useless extension candidates. Maximal degree in co-relation 42587. Up to 5816 conditions per place. [2024-06-28 04:02:50,584 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 532 selfloop transitions, 24 changer transitions 0/560 dead transitions. [2024-06-28 04:02:50,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 560 transitions, 8337 flow [2024-06-28 04:02:50,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:02:50,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:02:50,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-06-28 04:02:50,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-28 04:02:50,585 INFO L175 Difference]: Start difference. First operand has 342 places, 532 transitions, 6944 flow. Second operand 8 states and 123 transitions. [2024-06-28 04:02:50,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 560 transitions, 8337 flow [2024-06-28 04:02:51,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 560 transitions, 8161 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 04:02:51,396 INFO L231 Difference]: Finished difference. Result has 345 places, 540 transitions, 6924 flow [2024-06-28 04:02:51,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6771, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6924, PETRI_PLACES=345, PETRI_TRANSITIONS=540} [2024-06-28 04:02:51,397 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 302 predicate places. [2024-06-28 04:02:51,397 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 540 transitions, 6924 flow [2024-06-28 04:02:51,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:51,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:51,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:51,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 04:02:51,398 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:51,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:51,398 INFO L85 PathProgramCache]: Analyzing trace with hash -683471548, now seen corresponding path program 3 times [2024-06-28 04:02:51,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:51,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327006682] [2024-06-28 04:02:51,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:51,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:56,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:02:56,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:56,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327006682] [2024-06-28 04:02:56,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327006682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:56,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:56,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:02:56,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907548110] [2024-06-28 04:02:56,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:56,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:02:56,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:56,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:02:56,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:02:56,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:02:56,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 540 transitions, 6924 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:56,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:56,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:02:56,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:57,918 INFO L124 PetriNetUnfolderBase]: 3743/6024 cut-off events. [2024-06-28 04:02:57,919 INFO L125 PetriNetUnfolderBase]: For 333132/333136 co-relation queries the response was YES. [2024-06-28 04:02:57,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42875 conditions, 6024 events. 3743/6024 cut-off events. For 333132/333136 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 37788 event pairs, 1793 based on Foata normal form. 6/6030 useless extension candidates. Maximal degree in co-relation 42723. Up to 5820 conditions per place. [2024-06-28 04:02:57,998 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 535 selfloop transitions, 20 changer transitions 0/559 dead transitions. [2024-06-28 04:02:57,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 559 transitions, 8103 flow [2024-06-28 04:02:57,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:02:57,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:02:57,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 119 transitions. [2024-06-28 04:02:57,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-28 04:02:57,999 INFO L175 Difference]: Start difference. First operand has 345 places, 540 transitions, 6924 flow. Second operand 8 states and 119 transitions. [2024-06-28 04:02:57,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 559 transitions, 8103 flow [2024-06-28 04:02:58,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 559 transitions, 7985 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-28 04:02:58,766 INFO L231 Difference]: Finished difference. Result has 348 places, 541 transitions, 6865 flow [2024-06-28 04:02:58,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6812, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6865, PETRI_PLACES=348, PETRI_TRANSITIONS=541} [2024-06-28 04:02:58,766 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 305 predicate places. [2024-06-28 04:02:58,767 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 541 transitions, 6865 flow [2024-06-28 04:02:58,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:58,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:58,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:58,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 04:02:58,767 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:58,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:58,767 INFO L85 PathProgramCache]: Analyzing trace with hash -568000702, now seen corresponding path program 1 times [2024-06-28 04:02:58,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:58,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214361196] [2024-06-28 04:02:58,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:58,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:58,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:02,498 INFO 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 04:03:02,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:02,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214361196] [2024-06-28 04:03:02,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214361196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:02,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:02,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:03:02,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195306563] [2024-06-28 04:03:02,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:02,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:03:02,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:02,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:03:02,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:03:02,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:03:02,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 541 transitions, 6865 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:02,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:02,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:03:02,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:04,632 INFO L124 PetriNetUnfolderBase]: 3930/6299 cut-off events. [2024-06-28 04:03:04,633 INFO L125 PetriNetUnfolderBase]: For 397882/397890 co-relation queries the response was YES. [2024-06-28 04:03:04,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47078 conditions, 6299 events. 3930/6299 cut-off events. For 397882/397890 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 39444 event pairs, 1649 based on Foata normal form. 9/6308 useless extension candidates. Maximal degree in co-relation 46925. Up to 5409 conditions per place. [2024-06-28 04:03:04,717 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 425 selfloop transitions, 159 changer transitions 0/588 dead transitions. [2024-06-28 04:03:04,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 588 transitions, 8707 flow [2024-06-28 04:03:04,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:03:04,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:03:04,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 04:03:04,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41369047619047616 [2024-06-28 04:03:04,719 INFO L175 Difference]: Start difference. First operand has 348 places, 541 transitions, 6865 flow. Second operand 8 states and 139 transitions. [2024-06-28 04:03:04,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 588 transitions, 8707 flow [2024-06-28 04:03:05,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 588 transitions, 8639 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 04:03:05,716 INFO L231 Difference]: Finished difference. Result has 351 places, 558 transitions, 7548 flow [2024-06-28 04:03:05,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6797, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7548, PETRI_PLACES=351, PETRI_TRANSITIONS=558} [2024-06-28 04:03:05,716 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 308 predicate places. [2024-06-28 04:03:05,716 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 558 transitions, 7548 flow [2024-06-28 04:03:05,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:05,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:05,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:05,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 04:03:05,717 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:05,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:05,717 INFO L85 PathProgramCache]: Analyzing trace with hash -568185028, now seen corresponding path program 4 times [2024-06-28 04:03:05,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:05,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569340264] [2024-06-28 04:03:05,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:05,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:05,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:08,482 INFO 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 04:03:08,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:08,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569340264] [2024-06-28 04:03:08,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569340264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:08,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:08,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:03:08,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650837136] [2024-06-28 04:03:08,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:08,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:03:08,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:08,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:03:08,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:03:08,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:03:08,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 558 transitions, 7548 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:08,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:08,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:03:08,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:10,502 INFO L124 PetriNetUnfolderBase]: 3940/6309 cut-off events. [2024-06-28 04:03:10,503 INFO L125 PetriNetUnfolderBase]: For 417717/417721 co-relation queries the response was YES. [2024-06-28 04:03:10,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49031 conditions, 6309 events. 3940/6309 cut-off events. For 417717/417721 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 39352 event pairs, 1864 based on Foata normal form. 6/6315 useless extension candidates. Maximal degree in co-relation 48876. Up to 6052 conditions per place. [2024-06-28 04:03:10,590 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 535 selfloop transitions, 43 changer transitions 0/582 dead transitions. [2024-06-28 04:03:10,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 582 transitions, 8957 flow [2024-06-28 04:03:10,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:03:10,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:03:10,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-28 04:03:10,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-28 04:03:10,591 INFO L175 Difference]: Start difference. First operand has 351 places, 558 transitions, 7548 flow. Second operand 9 states and 133 transitions. [2024-06-28 04:03:10,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 582 transitions, 8957 flow [2024-06-28 04:03:11,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 582 transitions, 8873 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-28 04:03:11,706 INFO L231 Difference]: Finished difference. Result has 357 places, 564 transitions, 7627 flow [2024-06-28 04:03:11,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7464, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=518, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7627, PETRI_PLACES=357, PETRI_TRANSITIONS=564} [2024-06-28 04:03:11,707 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 314 predicate places. [2024-06-28 04:03:11,707 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 564 transitions, 7627 flow [2024-06-28 04:03:11,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:11,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:11,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:11,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 04:03:11,708 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:11,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:11,708 INFO L85 PathProgramCache]: Analyzing trace with hash -568007398, now seen corresponding path program 5 times [2024-06-28 04:03:11,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:11,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778300440] [2024-06-28 04:03:11,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:11,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:14,723 INFO 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 04:03:14,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:14,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778300440] [2024-06-28 04:03:14,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778300440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:14,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:14,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:03:14,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103523439] [2024-06-28 04:03:14,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:14,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:03:14,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:14,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:03:14,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:03:14,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:03:14,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 564 transitions, 7627 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:14,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:14,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:03:14,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:17,149 INFO L124 PetriNetUnfolderBase]: 3958/6338 cut-off events. [2024-06-28 04:03:17,149 INFO L125 PetriNetUnfolderBase]: For 428986/428996 co-relation queries the response was YES. [2024-06-28 04:03:17,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49303 conditions, 6338 events. 3958/6338 cut-off events. For 428986/428996 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 39693 event pairs, 1649 based on Foata normal form. 12/6350 useless extension candidates. Maximal degree in co-relation 49145. Up to 5444 conditions per place. [2024-06-28 04:03:17,241 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 432 selfloop transitions, 162 changer transitions 0/598 dead transitions. [2024-06-28 04:03:17,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 598 transitions, 9225 flow [2024-06-28 04:03:17,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:03:17,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:03:17,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 04:03:17,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2024-06-28 04:03:17,243 INFO L175 Difference]: Start difference. First operand has 357 places, 564 transitions, 7627 flow. Second operand 9 states and 141 transitions. [2024-06-28 04:03:17,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 598 transitions, 9225 flow [2024-06-28 04:03:18,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 598 transitions, 9149 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 04:03:18,259 INFO L231 Difference]: Finished difference. Result has 362 places, 573 transitions, 8199 flow [2024-06-28 04:03:18,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7555, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8199, PETRI_PLACES=362, PETRI_TRANSITIONS=573} [2024-06-28 04:03:18,260 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 319 predicate places. [2024-06-28 04:03:18,260 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 573 transitions, 8199 flow [2024-06-28 04:03:18,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:18,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:18,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:18,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 04:03:18,261 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:18,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:18,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1431217430, now seen corresponding path program 6 times [2024-06-28 04:03:18,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:18,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730445051] [2024-06-28 04:03:18,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:18,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:21,279 INFO 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 04:03:21,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:21,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730445051] [2024-06-28 04:03:21,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730445051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:21,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:21,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:03:21,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349938644] [2024-06-28 04:03:21,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:21,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:03:21,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:21,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:03:21,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:03:21,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:03:21,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 573 transitions, 8199 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:21,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:21,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:03:21,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:23,476 INFO L124 PetriNetUnfolderBase]: 3952/6324 cut-off events. [2024-06-28 04:03:23,476 INFO L125 PetriNetUnfolderBase]: For 439577/439581 co-relation queries the response was YES. [2024-06-28 04:03:23,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50649 conditions, 6324 events. 3952/6324 cut-off events. For 439577/439581 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 39464 event pairs, 1863 based on Foata normal form. 6/6330 useless extension candidates. Maximal degree in co-relation 50488. Up to 6092 conditions per place. [2024-06-28 04:03:23,562 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 546 selfloop transitions, 39 changer transitions 0/589 dead transitions. [2024-06-28 04:03:23,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 589 transitions, 9440 flow [2024-06-28 04:03:23,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:03:23,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:03:23,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 120 transitions. [2024-06-28 04:03:23,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-28 04:03:23,563 INFO L175 Difference]: Start difference. First operand has 362 places, 573 transitions, 8199 flow. Second operand 8 states and 120 transitions. [2024-06-28 04:03:23,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 589 transitions, 9440 flow [2024-06-28 04:03:24,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 589 transitions, 9363 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 04:03:24,756 INFO L231 Difference]: Finished difference. Result has 365 places, 574 transitions, 8223 flow [2024-06-28 04:03:24,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8126, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8223, PETRI_PLACES=365, PETRI_TRANSITIONS=574} [2024-06-28 04:03:24,757 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 322 predicate places. [2024-06-28 04:03:24,757 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 574 transitions, 8223 flow [2024-06-28 04:03:24,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:24,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:24,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:24,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 04:03:24,757 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:24,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:24,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1431222204, now seen corresponding path program 4 times [2024-06-28 04:03:24,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:24,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862325957] [2024-06-28 04:03:24,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:24,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:27,797 INFO 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 04:03:27,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:27,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862325957] [2024-06-28 04:03:27,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862325957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:27,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:27,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:03:27,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084716156] [2024-06-28 04:03:27,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:27,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:03:27,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:27,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:03:27,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:03:27,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:03:27,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 574 transitions, 8223 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 04:03:27,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:27,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:03:27,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:29,903 INFO L124 PetriNetUnfolderBase]: 3861/6216 cut-off events. [2024-06-28 04:03:29,903 INFO L125 PetriNetUnfolderBase]: For 442636/442671 co-relation queries the response was YES. [2024-06-28 04:03:29,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49712 conditions, 6216 events. 3861/6216 cut-off events. For 442636/442671 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 38884 event pairs, 1251 based on Foata normal form. 29/6235 useless extension candidates. Maximal degree in co-relation 49549. Up to 5802 conditions per place. [2024-06-28 04:03:29,991 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 481 selfloop transitions, 71 changer transitions 0/587 dead transitions. [2024-06-28 04:03:29,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 587 transitions, 9363 flow [2024-06-28 04:03:29,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:03:29,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:03:29,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-06-28 04:03:29,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3601190476190476 [2024-06-28 04:03:29,992 INFO L175 Difference]: Start difference. First operand has 365 places, 574 transitions, 8223 flow. Second operand 8 states and 121 transitions. [2024-06-28 04:03:29,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 587 transitions, 9363 flow [2024-06-28 04:03:31,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 587 transitions, 9250 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 04:03:31,415 INFO L231 Difference]: Finished difference. Result has 367 places, 574 transitions, 8260 flow [2024-06-28 04:03:31,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8110, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8260, PETRI_PLACES=367, PETRI_TRANSITIONS=574} [2024-06-28 04:03:31,416 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 324 predicate places. [2024-06-28 04:03:31,416 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 574 transitions, 8260 flow [2024-06-28 04:03:31,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 04:03:31,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:31,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:31,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 04:03:31,416 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:31,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:31,416 INFO L85 PathProgramCache]: Analyzing trace with hash 308176335, now seen corresponding path program 1 times [2024-06-28 04:03:31,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:31,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864825357] [2024-06-28 04:03:31,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:31,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:33,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:33,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:33,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864825357] [2024-06-28 04:03:33,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864825357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:33,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:33,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:03:33,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921882337] [2024-06-28 04:03:33,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:33,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:03:33,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:33,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:03:33,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:03:33,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:03:33,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 574 transitions, 8260 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:33,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:33,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:03:33,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:36,588 INFO L124 PetriNetUnfolderBase]: 4029/6429 cut-off events. [2024-06-28 04:03:36,589 INFO L125 PetriNetUnfolderBase]: For 490244/490252 co-relation queries the response was YES. [2024-06-28 04:03:36,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52046 conditions, 6429 events. 4029/6429 cut-off events. For 490244/490252 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 40000 event pairs, 1180 based on Foata normal form. 16/6445 useless extension candidates. Maximal degree in co-relation 51882. Up to 5885 conditions per place. [2024-06-28 04:03:36,679 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 528 selfloop transitions, 100 changer transitions 0/632 dead transitions. [2024-06-28 04:03:36,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 632 transitions, 9934 flow [2024-06-28 04:03:36,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 04:03:36,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 04:03:36,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 210 transitions. [2024-06-28 04:03:36,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-28 04:03:36,680 INFO L175 Difference]: Start difference. First operand has 367 places, 574 transitions, 8260 flow. Second operand 13 states and 210 transitions. [2024-06-28 04:03:36,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 632 transitions, 9934 flow [2024-06-28 04:03:38,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 632 transitions, 9778 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 04:03:38,180 INFO L231 Difference]: Finished difference. Result has 373 places, 576 transitions, 8340 flow [2024-06-28 04:03:38,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8104, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8340, PETRI_PLACES=373, PETRI_TRANSITIONS=576} [2024-06-28 04:03:38,181 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 330 predicate places. [2024-06-28 04:03:38,181 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 576 transitions, 8340 flow [2024-06-28 04:03:38,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:38,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:38,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:38,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 04:03:38,181 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:38,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:38,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1750294011, now seen corresponding path program 2 times [2024-06-28 04:03:38,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:38,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578541014] [2024-06-28 04:03:38,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:38,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:38,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:40,622 INFO 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 04:03:40,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:40,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578541014] [2024-06-28 04:03:40,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578541014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:40,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:40,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:03:40,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442535921] [2024-06-28 04:03:40,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:40,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:03:40,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:40,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:03:40,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:03:40,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:03:40,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 576 transitions, 8340 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:40,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:40,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:03:40,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:43,409 INFO L124 PetriNetUnfolderBase]: 4057/6475 cut-off events. [2024-06-28 04:03:43,409 INFO L125 PetriNetUnfolderBase]: For 499691/499699 co-relation queries the response was YES. [2024-06-28 04:03:43,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52676 conditions, 6475 events. 4057/6475 cut-off events. For 499691/499699 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 40214 event pairs, 1224 based on Foata normal form. 16/6491 useless extension candidates. Maximal degree in co-relation 52511. Up to 6023 conditions per place. [2024-06-28 04:03:43,497 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 529 selfloop transitions, 93 changer transitions 0/626 dead transitions. [2024-06-28 04:03:43,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 626 transitions, 9968 flow [2024-06-28 04:03:43,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 04:03:43,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 04:03:43,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 202 transitions. [2024-06-28 04:03:43,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36996336996337 [2024-06-28 04:03:43,498 INFO L175 Difference]: Start difference. First operand has 373 places, 576 transitions, 8340 flow. Second operand 13 states and 202 transitions. [2024-06-28 04:03:43,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 626 transitions, 9968 flow [2024-06-28 04:03:44,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 626 transitions, 9834 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 04:03:44,943 INFO L231 Difference]: Finished difference. Result has 377 places, 577 transitions, 8413 flow [2024-06-28 04:03:44,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8210, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8413, PETRI_PLACES=377, PETRI_TRANSITIONS=577} [2024-06-28 04:03:44,943 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 334 predicate places. [2024-06-28 04:03:44,943 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 577 transitions, 8413 flow [2024-06-28 04:03:44,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:44,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:44,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:44,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 04:03:44,944 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:44,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:44,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1643960443, now seen corresponding path program 3 times [2024-06-28 04:03:44,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:44,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892220354] [2024-06-28 04:03:44,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:44,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:47,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:47,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:47,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892220354] [2024-06-28 04:03:47,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892220354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:47,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:47,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:03:47,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758254904] [2024-06-28 04:03:47,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:47,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:03:47,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:47,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:03:47,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:03:47,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:03:47,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 577 transitions, 8413 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:47,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:47,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:03:47,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:50,259 INFO L124 PetriNetUnfolderBase]: 4034/6442 cut-off events. [2024-06-28 04:03:50,259 INFO L125 PetriNetUnfolderBase]: For 488111/488119 co-relation queries the response was YES. [2024-06-28 04:03:50,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52016 conditions, 6442 events. 4034/6442 cut-off events. For 488111/488119 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 39990 event pairs, 1233 based on Foata normal form. 18/6460 useless extension candidates. Maximal degree in co-relation 51849. Up to 6061 conditions per place. [2024-06-28 04:03:50,350 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 528 selfloop transitions, 88 changer transitions 0/620 dead transitions. [2024-06-28 04:03:50,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 620 transitions, 9831 flow [2024-06-28 04:03:50,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:03:50,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:03:50,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 187 transitions. [2024-06-28 04:03:50,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37103174603174605 [2024-06-28 04:03:50,352 INFO L175 Difference]: Start difference. First operand has 377 places, 577 transitions, 8413 flow. Second operand 12 states and 187 transitions. [2024-06-28 04:03:50,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 620 transitions, 9831 flow [2024-06-28 04:03:51,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 620 transitions, 9632 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 04:03:51,866 INFO L231 Difference]: Finished difference. Result has 378 places, 577 transitions, 8397 flow [2024-06-28 04:03:51,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8214, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8397, PETRI_PLACES=378, PETRI_TRANSITIONS=577} [2024-06-28 04:03:51,866 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 335 predicate places. [2024-06-28 04:03:51,867 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 577 transitions, 8397 flow [2024-06-28 04:03:51,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:51,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:51,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:51,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 04:03:51,867 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:51,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:51,867 INFO L85 PathProgramCache]: Analyzing trace with hash 786382843, now seen corresponding path program 4 times [2024-06-28 04:03:51,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:51,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917824563] [2024-06-28 04:03:51,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:51,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:51,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:54,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:54,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:54,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917824563] [2024-06-28 04:03:54,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917824563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:54,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:54,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:03:54,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036373954] [2024-06-28 04:03:54,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:54,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:03:54,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:54,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:03:54,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:03:54,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:03:54,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 577 transitions, 8397 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:54,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:54,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:03:54,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:56,972 INFO L124 PetriNetUnfolderBase]: 4149/6620 cut-off events. [2024-06-28 04:03:56,972 INFO L125 PetriNetUnfolderBase]: For 526239/526247 co-relation queries the response was YES. [2024-06-28 04:03:57,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53784 conditions, 6620 events. 4149/6620 cut-off events. For 526239/526247 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 41116 event pairs, 959 based on Foata normal form. 16/6636 useless extension candidates. Maximal degree in co-relation 53616. Up to 5725 conditions per place. [2024-06-28 04:03:57,063 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 514 selfloop transitions, 115 changer transitions 0/633 dead transitions. [2024-06-28 04:03:57,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 633 transitions, 10076 flow [2024-06-28 04:03:57,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:03:57,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:03:57,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 195 transitions. [2024-06-28 04:03:57,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3869047619047619 [2024-06-28 04:03:57,065 INFO L175 Difference]: Start difference. First operand has 378 places, 577 transitions, 8397 flow. Second operand 12 states and 195 transitions. [2024-06-28 04:03:57,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 633 transitions, 10076 flow [2024-06-28 04:03:58,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 633 transitions, 9892 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-28 04:03:58,501 INFO L231 Difference]: Finished difference. Result has 379 places, 580 transitions, 8491 flow [2024-06-28 04:03:58,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8213, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8491, PETRI_PLACES=379, PETRI_TRANSITIONS=580} [2024-06-28 04:03:58,502 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 336 predicate places. [2024-06-28 04:03:58,502 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 580 transitions, 8491 flow [2024-06-28 04:03:58,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:58,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:58,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:58,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 04:03:58,503 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:58,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:58,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1202082921, now seen corresponding path program 1 times [2024-06-28 04:03:58,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:58,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895666834] [2024-06-28 04:03:58,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:58,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:58,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:01,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:01,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:01,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895666834] [2024-06-28 04:04:01,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895666834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:01,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:01,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:04:01,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850436769] [2024-06-28 04:04:01,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:01,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:04:01,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:01,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:04:01,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:04:01,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:04:01,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 580 transitions, 8491 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:01,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:01,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:04:01,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:03,994 INFO L124 PetriNetUnfolderBase]: 4154/6620 cut-off events. [2024-06-28 04:04:03,994 INFO L125 PetriNetUnfolderBase]: For 515888/515912 co-relation queries the response was YES. [2024-06-28 04:04:04,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54313 conditions, 6620 events. 4154/6620 cut-off events. For 515888/515912 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 41154 event pairs, 1108 based on Foata normal form. 25/6645 useless extension candidates. Maximal degree in co-relation 54144. Up to 6214 conditions per place. [2024-06-28 04:04:04,094 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 521 selfloop transitions, 99 changer transitions 0/624 dead transitions. [2024-06-28 04:04:04,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 624 transitions, 9947 flow [2024-06-28 04:04:04,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:04:04,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:04:04,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-28 04:04:04,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 04:04:04,096 INFO L175 Difference]: Start difference. First operand has 379 places, 580 transitions, 8491 flow. Second operand 10 states and 168 transitions. [2024-06-28 04:04:04,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 624 transitions, 9947 flow [2024-06-28 04:04:05,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 624 transitions, 9813 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 04:04:05,729 INFO L231 Difference]: Finished difference. Result has 381 places, 583 transitions, 8652 flow [2024-06-28 04:04:05,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8357, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8652, PETRI_PLACES=381, PETRI_TRANSITIONS=583} [2024-06-28 04:04:05,730 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 338 predicate places. [2024-06-28 04:04:05,730 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 583 transitions, 8652 flow [2024-06-28 04:04:05,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:05,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:05,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:05,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 04:04:05,731 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:05,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:05,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1576944987, now seen corresponding path program 1 times [2024-06-28 04:04:05,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:05,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672466248] [2024-06-28 04:04:05,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:05,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:08,317 INFO 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 04:04:08,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:08,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672466248] [2024-06-28 04:04:08,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672466248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:08,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:08,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:04:08,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049889707] [2024-06-28 04:04:08,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:08,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:04:08,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:08,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:04:08,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:04:08,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:04:08,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 583 transitions, 8652 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:08,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:08,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:04:08,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:11,580 INFO L124 PetriNetUnfolderBase]: 4212/6704 cut-off events. [2024-06-28 04:04:11,581 INFO L125 PetriNetUnfolderBase]: For 552255/552279 co-relation queries the response was YES. [2024-06-28 04:04:11,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56217 conditions, 6704 events. 4212/6704 cut-off events. For 552255/552279 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 41735 event pairs, 935 based on Foata normal form. 26/6730 useless extension candidates. Maximal degree in co-relation 56046. Up to 6013 conditions per place. [2024-06-28 04:04:11,668 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 448 selfloop transitions, 192 changer transitions 0/644 dead transitions. [2024-06-28 04:04:11,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 644 transitions, 10882 flow [2024-06-28 04:04:11,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 04:04:11,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 04:04:11,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 224 transitions. [2024-06-28 04:04:11,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-28 04:04:11,670 INFO L175 Difference]: Start difference. First operand has 381 places, 583 transitions, 8652 flow. Second operand 14 states and 224 transitions. [2024-06-28 04:04:11,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 644 transitions, 10882 flow [2024-06-28 04:04:13,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 644 transitions, 10611 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-28 04:04:13,335 INFO L231 Difference]: Finished difference. Result has 387 places, 595 transitions, 9090 flow [2024-06-28 04:04:13,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8381, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9090, PETRI_PLACES=387, PETRI_TRANSITIONS=595} [2024-06-28 04:04:13,336 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 344 predicate places. [2024-06-28 04:04:13,336 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 595 transitions, 9090 flow [2024-06-28 04:04:13,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:13,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:13,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:13,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 04:04:13,336 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:13,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:13,337 INFO L85 PathProgramCache]: Analyzing trace with hash 774259941, now seen corresponding path program 2 times [2024-06-28 04:04:13,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:13,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646014254] [2024-06-28 04:04:13,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:13,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:13,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:15,612 INFO 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 04:04:15,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:15,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646014254] [2024-06-28 04:04:15,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646014254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:15,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:15,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:04:15,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188287896] [2024-06-28 04:04:15,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:15,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:04:15,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:15,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:04:15,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:04:15,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:04:15,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 595 transitions, 9090 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:15,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:15,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:04:15,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:18,116 INFO L124 PetriNetUnfolderBase]: 4217/6713 cut-off events. [2024-06-28 04:04:18,117 INFO L125 PetriNetUnfolderBase]: For 565877/565901 co-relation queries the response was YES. [2024-06-28 04:04:18,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56962 conditions, 6713 events. 4217/6713 cut-off events. For 565877/565901 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 41795 event pairs, 944 based on Foata normal form. 25/6738 useless extension candidates. Maximal degree in co-relation 56790. Up to 6196 conditions per place. [2024-06-28 04:04:18,220 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 473 selfloop transitions, 158 changer transitions 0/635 dead transitions. [2024-06-28 04:04:18,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 635 transitions, 10556 flow [2024-06-28 04:04:18,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:04:18,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:04:18,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-28 04:04:18,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4023809523809524 [2024-06-28 04:04:18,221 INFO L175 Difference]: Start difference. First operand has 387 places, 595 transitions, 9090 flow. Second operand 10 states and 169 transitions. [2024-06-28 04:04:18,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 635 transitions, 10556 flow [2024-06-28 04:04:20,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 635 transitions, 10189 flow, removed 72 selfloop flow, removed 9 redundant places. [2024-06-28 04:04:20,140 INFO L231 Difference]: Finished difference. Result has 388 places, 598 transitions, 9140 flow [2024-06-28 04:04:20,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8723, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9140, PETRI_PLACES=388, PETRI_TRANSITIONS=598} [2024-06-28 04:04:20,141 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 345 predicate places. [2024-06-28 04:04:20,141 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 598 transitions, 9140 flow [2024-06-28 04:04:20,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:20,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:20,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:20,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 04:04:20,141 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:20,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:20,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1775417217, now seen corresponding path program 2 times [2024-06-28 04:04:20,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:20,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693438191] [2024-06-28 04:04:20,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:20,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:22,660 INFO 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 04:04:22,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:22,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693438191] [2024-06-28 04:04:22,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693438191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:22,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:22,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:04:22,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543092723] [2024-06-28 04:04:22,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:22,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:04:22,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:22,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:04:22,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:04:22,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:04:22,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 598 transitions, 9140 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:22,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:22,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:04:22,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:25,570 INFO L124 PetriNetUnfolderBase]: 4227/6728 cut-off events. [2024-06-28 04:04:25,570 INFO L125 PetriNetUnfolderBase]: For 580589/580613 co-relation queries the response was YES. [2024-06-28 04:04:25,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57398 conditions, 6728 events. 4227/6728 cut-off events. For 580589/580613 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 41917 event pairs, 941 based on Foata normal form. 26/6754 useless extension candidates. Maximal degree in co-relation 57225. Up to 6030 conditions per place. [2024-06-28 04:04:25,668 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 441 selfloop transitions, 197 changer transitions 0/642 dead transitions. [2024-06-28 04:04:25,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 642 transitions, 10932 flow [2024-06-28 04:04:25,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:04:25,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:04:25,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 195 transitions. [2024-06-28 04:04:25,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3869047619047619 [2024-06-28 04:04:25,670 INFO L175 Difference]: Start difference. First operand has 388 places, 598 transitions, 9140 flow. Second operand 12 states and 195 transitions. [2024-06-28 04:04:25,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 642 transitions, 10932 flow [2024-06-28 04:04:27,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 642 transitions, 10551 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-28 04:04:27,396 INFO L231 Difference]: Finished difference. Result has 392 places, 601 transitions, 9216 flow [2024-06-28 04:04:27,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8759, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9216, PETRI_PLACES=392, PETRI_TRANSITIONS=601} [2024-06-28 04:04:27,396 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 349 predicate places. [2024-06-28 04:04:27,396 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 601 transitions, 9216 flow [2024-06-28 04:04:27,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:27,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:27,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:27,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 04:04:27,397 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:27,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:27,400 INFO L85 PathProgramCache]: Analyzing trace with hash 780689031, now seen corresponding path program 3 times [2024-06-28 04:04:27,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:27,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602335670] [2024-06-28 04:04:27,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:27,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:29,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:29,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:29,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602335670] [2024-06-28 04:04:29,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602335670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:29,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:29,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:04:29,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761968790] [2024-06-28 04:04:29,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:29,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:04:29,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:29,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:04:29,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:04:29,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:04:29,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 601 transitions, 9216 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:29,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:29,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:04:29,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:32,554 INFO L124 PetriNetUnfolderBase]: 4240/6746 cut-off events. [2024-06-28 04:04:32,554 INFO L125 PetriNetUnfolderBase]: For 593827/593851 co-relation queries the response was YES. [2024-06-28 04:04:32,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57977 conditions, 6746 events. 4240/6746 cut-off events. For 593827/593851 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 41990 event pairs, 949 based on Foata normal form. 25/6771 useless extension candidates. Maximal degree in co-relation 57803. Up to 6213 conditions per place. [2024-06-28 04:04:32,644 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 470 selfloop transitions, 168 changer transitions 0/642 dead transitions. [2024-06-28 04:04:32,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 642 transitions, 10946 flow [2024-06-28 04:04:32,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:04:32,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:04:32,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-28 04:04:32,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-28 04:04:32,646 INFO L175 Difference]: Start difference. First operand has 392 places, 601 transitions, 9216 flow. Second operand 11 states and 176 transitions. [2024-06-28 04:04:32,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 642 transitions, 10946 flow [2024-06-28 04:04:34,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 642 transitions, 10546 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-28 04:04:34,366 INFO L231 Difference]: Finished difference. Result has 394 places, 607 transitions, 9353 flow [2024-06-28 04:04:34,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8816, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9353, PETRI_PLACES=394, PETRI_TRANSITIONS=607} [2024-06-28 04:04:34,367 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 351 predicate places. [2024-06-28 04:04:34,367 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 607 transitions, 9353 flow [2024-06-28 04:04:34,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:34,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:34,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:34,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 04:04:34,368 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:34,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:34,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1485294059, now seen corresponding path program 3 times [2024-06-28 04:04:34,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:34,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759328222] [2024-06-28 04:04:34,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:34,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:36,901 INFO 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 04:04:36,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:36,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759328222] [2024-06-28 04:04:36,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759328222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:36,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:36,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:04:36,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526873384] [2024-06-28 04:04:36,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:36,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:04:36,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:36,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:04:36,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:04:36,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:04:36,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 607 transitions, 9353 flow. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:36,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:36,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:04:36,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:40,357 INFO L124 PetriNetUnfolderBase]: 4234/6738 cut-off events. [2024-06-28 04:04:40,358 INFO L125 PetriNetUnfolderBase]: For 603606/603630 co-relation queries the response was YES. [2024-06-28 04:04:40,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57885 conditions, 6738 events. 4234/6738 cut-off events. For 603606/603630 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 41954 event pairs, 940 based on Foata normal form. 26/6764 useless extension candidates. Maximal degree in co-relation 57710. Up to 6043 conditions per place. [2024-06-28 04:04:40,448 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 448 selfloop transitions, 199 changer transitions 0/651 dead transitions. [2024-06-28 04:04:40,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 651 transitions, 11127 flow [2024-06-28 04:04:40,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 04:04:40,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 04:04:40,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 218 transitions. [2024-06-28 04:04:40,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3707482993197279 [2024-06-28 04:04:40,449 INFO L175 Difference]: Start difference. First operand has 394 places, 607 transitions, 9353 flow. Second operand 14 states and 218 transitions. [2024-06-28 04:04:40,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 651 transitions, 11127 flow [2024-06-28 04:04:42,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 651 transitions, 10799 flow, removed 66 selfloop flow, removed 7 redundant places. [2024-06-28 04:04:42,310 INFO L231 Difference]: Finished difference. Result has 401 places, 607 transitions, 9430 flow [2024-06-28 04:04:42,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9025, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9430, PETRI_PLACES=401, PETRI_TRANSITIONS=607} [2024-06-28 04:04:42,310 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 358 predicate places. [2024-06-28 04:04:42,310 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 607 transitions, 9430 flow [2024-06-28 04:04:42,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:42,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:42,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:42,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 04:04:42,311 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:42,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:42,311 INFO L85 PathProgramCache]: Analyzing trace with hash -733797035, now seen corresponding path program 5 times [2024-06-28 04:04:42,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:42,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881263094] [2024-06-28 04:04:42,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:42,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:42,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:44,971 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 04:04:44,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:44,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881263094] [2024-06-28 04:04:44,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881263094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:44,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:44,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:04:44,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400139883] [2024-06-28 04:04:44,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:44,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:04:44,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:44,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:04:44,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:04:44,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:04:44,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 607 transitions, 9430 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:44,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:44,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:04:44,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:48,258 INFO L124 PetriNetUnfolderBase]: 4262/6788 cut-off events. [2024-06-28 04:04:48,258 INFO L125 PetriNetUnfolderBase]: For 641197/641211 co-relation queries the response was YES. [2024-06-28 04:04:48,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58612 conditions, 6788 events. 4262/6788 cut-off events. For 641197/641211 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 42166 event pairs, 970 based on Foata normal form. 22/6810 useless extension candidates. Maximal degree in co-relation 58435. Up to 5853 conditions per place. [2024-06-28 04:04:48,366 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 520 selfloop transitions, 123 changer transitions 0/647 dead transitions. [2024-06-28 04:04:48,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 647 transitions, 11096 flow [2024-06-28 04:04:48,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:04:48,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:04:48,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 04:04:48,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-28 04:04:48,367 INFO L175 Difference]: Start difference. First operand has 401 places, 607 transitions, 9430 flow. Second operand 10 states and 160 transitions. [2024-06-28 04:04:48,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 647 transitions, 11096 flow [2024-06-28 04:04:50,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 647 transitions, 10668 flow, removed 0 selfloop flow, removed 14 redundant places. [2024-06-28 04:04:50,311 INFO L231 Difference]: Finished difference. Result has 397 places, 608 transitions, 9275 flow [2024-06-28 04:04:50,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9002, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9275, PETRI_PLACES=397, PETRI_TRANSITIONS=608} [2024-06-28 04:04:50,312 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 354 predicate places. [2024-06-28 04:04:50,312 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 608 transitions, 9275 flow [2024-06-28 04:04:50,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:50,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:50,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:50,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 04:04:50,312 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:50,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:50,312 INFO L85 PathProgramCache]: Analyzing trace with hash 825656085, now seen corresponding path program 6 times [2024-06-28 04:04:50,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:50,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469129784] [2024-06-28 04:04:50,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:50,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:50,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:52,927 INFO 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 04:04:52,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:52,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469129784] [2024-06-28 04:04:52,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469129784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:52,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:52,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:04:52,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35609001] [2024-06-28 04:04:52,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:52,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:04:52,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:52,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:04:52,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:04:52,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:04:52,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 608 transitions, 9275 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:52,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:52,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:04:52,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:56,142 INFO L124 PetriNetUnfolderBase]: 4298/6847 cut-off events. [2024-06-28 04:04:56,143 INFO L125 PetriNetUnfolderBase]: For 658486/658500 co-relation queries the response was YES. [2024-06-28 04:04:56,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59146 conditions, 6847 events. 4298/6847 cut-off events. For 658486/658500 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 42695 event pairs, 1307 based on Foata normal form. 24/6871 useless extension candidates. Maximal degree in co-relation 58968. Up to 6402 conditions per place. [2024-06-28 04:04:56,239 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 545 selfloop transitions, 90 changer transitions 0/639 dead transitions. [2024-06-28 04:04:56,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 639 transitions, 10717 flow [2024-06-28 04:04:56,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:04:56,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:04:56,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-06-28 04:04:56,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619047619047619 [2024-06-28 04:04:56,241 INFO L175 Difference]: Start difference. First operand has 397 places, 608 transitions, 9275 flow. Second operand 10 states and 152 transitions. [2024-06-28 04:04:56,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 639 transitions, 10717 flow [2024-06-28 04:04:58,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 639 transitions, 10513 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 04:04:58,079 INFO L231 Difference]: Finished difference. Result has 398 places, 609 transitions, 9281 flow [2024-06-28 04:04:58,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9072, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=518, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9281, PETRI_PLACES=398, PETRI_TRANSITIONS=609} [2024-06-28 04:04:58,079 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 355 predicate places. [2024-06-28 04:04:58,079 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 609 transitions, 9281 flow [2024-06-28 04:04:58,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:58,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:58,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:58,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 04:04:58,080 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:58,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:58,080 INFO L85 PathProgramCache]: Analyzing trace with hash 825329655, now seen corresponding path program 7 times [2024-06-28 04:04:58,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:58,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768483337] [2024-06-28 04:04:58,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:58,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:00,684 INFO 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 04:05:00,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:00,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768483337] [2024-06-28 04:05:00,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768483337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:00,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:00,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:05:00,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287777259] [2024-06-28 04:05:00,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:00,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:05:00,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:00,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:05:00,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:05:00,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:05:00,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 609 transitions, 9281 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:00,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:00,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:05:00,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:03,942 INFO L124 PetriNetUnfolderBase]: 4326/6891 cut-off events. [2024-06-28 04:05:03,942 INFO L125 PetriNetUnfolderBase]: For 638661/638675 co-relation queries the response was YES. [2024-06-28 04:05:04,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59046 conditions, 6891 events. 4326/6891 cut-off events. For 638661/638675 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 42961 event pairs, 1283 based on Foata normal form. 22/6913 useless extension candidates. Maximal degree in co-relation 58869. Up to 6350 conditions per place. [2024-06-28 04:05:04,054 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 541 selfloop transitions, 100 changer transitions 0/645 dead transitions. [2024-06-28 04:05:04,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 645 transitions, 10770 flow [2024-06-28 04:05:04,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:05:04,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:05:04,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 166 transitions. [2024-06-28 04:05:04,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3593073593073593 [2024-06-28 04:05:04,055 INFO L175 Difference]: Start difference. First operand has 398 places, 609 transitions, 9281 flow. Second operand 11 states and 166 transitions. [2024-06-28 04:05:04,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 645 transitions, 10770 flow [2024-06-28 04:05:06,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 645 transitions, 10589 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 04:05:06,213 INFO L231 Difference]: Finished difference. Result has 400 places, 610 transitions, 9327 flow [2024-06-28 04:05:06,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9100, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9327, PETRI_PLACES=400, PETRI_TRANSITIONS=610} [2024-06-28 04:05:06,214 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 357 predicate places. [2024-06-28 04:05:06,214 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 610 transitions, 9327 flow [2024-06-28 04:05:06,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:06,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:06,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:05:06,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 04:05:06,214 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:06,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:06,214 INFO L85 PathProgramCache]: Analyzing trace with hash 151446125, now seen corresponding path program 8 times [2024-06-28 04:05:06,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:06,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599463754] [2024-06-28 04:05:06,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:06,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:06,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:08,822 INFO 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 04:05:08,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:08,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599463754] [2024-06-28 04:05:08,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599463754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:08,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:08,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:05:08,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416116607] [2024-06-28 04:05:08,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:08,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:05:08,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:08,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:05:08,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:05:08,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:05:08,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 610 transitions, 9327 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:08,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:08,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:05:08,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:11,775 INFO L124 PetriNetUnfolderBase]: 4362/6926 cut-off events. [2024-06-28 04:05:11,776 INFO L125 PetriNetUnfolderBase]: For 645389/645397 co-relation queries the response was YES. [2024-06-28 04:05:11,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59495 conditions, 6926 events. 4362/6926 cut-off events. For 645389/645397 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 42952 event pairs, 982 based on Foata normal form. 11/6937 useless extension candidates. Maximal degree in co-relation 59318. Up to 6550 conditions per place. [2024-06-28 04:05:11,874 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 540 selfloop transitions, 87 changer transitions 0/631 dead transitions. [2024-06-28 04:05:11,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 631 transitions, 10720 flow [2024-06-28 04:05:11,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:05:11,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:05:11,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-06-28 04:05:11,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-28 04:05:11,875 INFO L175 Difference]: Start difference. First operand has 400 places, 610 transitions, 9327 flow. Second operand 8 states and 123 transitions. [2024-06-28 04:05:11,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 631 transitions, 10720 flow [2024-06-28 04:05:13,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 631 transitions, 10513 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 04:05:13,870 INFO L231 Difference]: Finished difference. Result has 398 places, 611 transitions, 9322 flow [2024-06-28 04:05:13,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9120, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9322, PETRI_PLACES=398, PETRI_TRANSITIONS=611} [2024-06-28 04:05:13,871 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 355 predicate places. [2024-06-28 04:05:13,871 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 611 transitions, 9322 flow [2024-06-28 04:05:13,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:13,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:13,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:05:13,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 04:05:13,872 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:13,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:13,872 INFO L85 PathProgramCache]: Analyzing trace with hash 144883887, now seen corresponding path program 9 times [2024-06-28 04:05:13,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:13,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786891847] [2024-06-28 04:05:13,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:13,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:16,399 INFO 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 04:05:16,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:16,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786891847] [2024-06-28 04:05:16,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786891847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:16,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:16,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:05:16,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83015185] [2024-06-28 04:05:16,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:16,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:05:16,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:16,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:05:16,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:05:16,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:05:16,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 611 transitions, 9322 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:16,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:16,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:05:16,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:19,576 INFO L124 PetriNetUnfolderBase]: 4385/6965 cut-off events. [2024-06-28 04:05:19,576 INFO L125 PetriNetUnfolderBase]: For 638655/638663 co-relation queries the response was YES. [2024-06-28 04:05:19,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59433 conditions, 6965 events. 4385/6965 cut-off events. For 638655/638663 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 43242 event pairs, 983 based on Foata normal form. 11/6976 useless extension candidates. Maximal degree in co-relation 59256. Up to 6587 conditions per place. [2024-06-28 04:05:19,685 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 542 selfloop transitions, 89 changer transitions 0/635 dead transitions. [2024-06-28 04:05:19,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 635 transitions, 10737 flow [2024-06-28 04:05:19,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:05:19,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:05:19,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 146 transitions. [2024-06-28 04:05:19,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3476190476190476 [2024-06-28 04:05:19,686 INFO L175 Difference]: Start difference. First operand has 398 places, 611 transitions, 9322 flow. Second operand 10 states and 146 transitions. [2024-06-28 04:05:19,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 635 transitions, 10737 flow [2024-06-28 04:05:21,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 635 transitions, 10558 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 04:05:21,731 INFO L231 Difference]: Finished difference. Result has 402 places, 612 transitions, 9351 flow [2024-06-28 04:05:21,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9143, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9351, PETRI_PLACES=402, PETRI_TRANSITIONS=612} [2024-06-28 04:05:21,732 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 359 predicate places. [2024-06-28 04:05:21,732 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 612 transitions, 9351 flow [2024-06-28 04:05:21,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:21,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:21,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:05:21,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 04:05:21,733 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:21,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:21,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1128902293, now seen corresponding path program 10 times [2024-06-28 04:05:21,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:21,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648515798] [2024-06-28 04:05:21,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:21,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:21,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:24,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:05:24,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:24,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648515798] [2024-06-28 04:05:24,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648515798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:24,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:24,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:05:24,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374618007] [2024-06-28 04:05:24,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:24,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:05:24,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:24,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:05:24,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:05:24,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:05:24,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 612 transitions, 9351 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:24,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:24,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:05:24,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:27,514 INFO L124 PetriNetUnfolderBase]: 4367/6937 cut-off events. [2024-06-28 04:05:27,514 INFO L125 PetriNetUnfolderBase]: For 616471/616479 co-relation queries the response was YES. [2024-06-28 04:05:27,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58715 conditions, 6937 events. 4367/6937 cut-off events. For 616471/616479 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 43047 event pairs, 973 based on Foata normal form. 9/6946 useless extension candidates. Maximal degree in co-relation 58537. Up to 6465 conditions per place. [2024-06-28 04:05:27,609 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 539 selfloop transitions, 95 changer transitions 0/638 dead transitions. [2024-06-28 04:05:27,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 638 transitions, 10775 flow [2024-06-28 04:05:27,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:05:27,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:05:27,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-06-28 04:05:27,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3523809523809524 [2024-06-28 04:05:27,610 INFO L175 Difference]: Start difference. First operand has 402 places, 612 transitions, 9351 flow. Second operand 10 states and 148 transitions. [2024-06-28 04:05:27,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 638 transitions, 10775 flow [2024-06-28 04:05:29,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 638 transitions, 10590 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 04:05:29,576 INFO L231 Difference]: Finished difference. Result has 404 places, 612 transitions, 9361 flow [2024-06-28 04:05:29,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9166, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9361, PETRI_PLACES=404, PETRI_TRANSITIONS=612} [2024-06-28 04:05:29,576 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 361 predicate places. [2024-06-28 04:05:29,576 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 612 transitions, 9361 flow [2024-06-28 04:05:29,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:29,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:29,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:05:29,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 04:05:29,578 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:29,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:29,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1631686973, now seen corresponding path program 4 times [2024-06-28 04:05:29,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:29,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204637089] [2024-06-28 04:05:29,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:29,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:32,309 INFO 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 04:05:32,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:32,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204637089] [2024-06-28 04:05:32,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204637089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:32,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:32,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:05:32,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492861893] [2024-06-28 04:05:32,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:32,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:05:32,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:32,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:05:32,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:05:32,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:05:32,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 612 transitions, 9361 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:32,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:32,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:05:32,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:34,705 INFO L124 PetriNetUnfolderBase]: 4372/6960 cut-off events. [2024-06-28 04:05:34,705 INFO L125 PetriNetUnfolderBase]: For 605675/605714 co-relation queries the response was YES. [2024-06-28 04:05:34,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58939 conditions, 6960 events. 4372/6960 cut-off events. For 605675/605714 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 43496 event pairs, 1160 based on Foata normal form. 40/7000 useless extension candidates. Maximal degree in co-relation 58760. Up to 6504 conditions per place. [2024-06-28 04:05:34,823 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 537 selfloop transitions, 103 changer transitions 0/644 dead transitions. [2024-06-28 04:05:34,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 644 transitions, 10853 flow [2024-06-28 04:05:34,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:05:34,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:05:34,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-28 04:05:34,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3898809523809524 [2024-06-28 04:05:34,824 INFO L175 Difference]: Start difference. First operand has 404 places, 612 transitions, 9361 flow. Second operand 8 states and 131 transitions. [2024-06-28 04:05:34,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 644 transitions, 10853 flow [2024-06-28 04:05:36,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 644 transitions, 10594 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 04:05:36,823 INFO L231 Difference]: Finished difference. Result has 403 places, 615 transitions, 9422 flow [2024-06-28 04:05:36,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9102, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9422, PETRI_PLACES=403, PETRI_TRANSITIONS=615} [2024-06-28 04:05:36,824 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 360 predicate places. [2024-06-28 04:05:36,824 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 615 transitions, 9422 flow [2024-06-28 04:05:36,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:36,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:36,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:05:36,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 04:05:36,825 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:36,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:36,825 INFO L85 PathProgramCache]: Analyzing trace with hash 648290205, now seen corresponding path program 5 times [2024-06-28 04:05:36,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:36,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729383248] [2024-06-28 04:05:36,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:36,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:36,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:39,155 INFO 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 04:05:39,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:39,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729383248] [2024-06-28 04:05:39,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729383248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:39,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:39,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:05:39,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018126540] [2024-06-28 04:05:39,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:39,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:05:39,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:39,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:05:39,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:05:39,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:05:39,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 615 transitions, 9422 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:39,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:39,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:05:39,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:41,848 INFO L124 PetriNetUnfolderBase]: 4382/6974 cut-off events. [2024-06-28 04:05:41,849 INFO L125 PetriNetUnfolderBase]: For 622575/622614 co-relation queries the response was YES. [2024-06-28 04:05:41,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59441 conditions, 6974 events. 4382/6974 cut-off events. For 622575/622614 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 43556 event pairs, 991 based on Foata normal form. 41/7015 useless extension candidates. Maximal degree in co-relation 59261. Up to 6442 conditions per place. [2024-06-28 04:05:41,944 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 476 selfloop transitions, 166 changer transitions 0/646 dead transitions. [2024-06-28 04:05:41,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 646 transitions, 10988 flow [2024-06-28 04:05:41,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:05:41,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:05:41,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 04:05:41,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3869047619047619 [2024-06-28 04:05:41,945 INFO L175 Difference]: Start difference. First operand has 403 places, 615 transitions, 9422 flow. Second operand 8 states and 130 transitions. [2024-06-28 04:05:41,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 646 transitions, 10988 flow [2024-06-28 04:05:43,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 646 transitions, 10708 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-28 04:05:43,814 INFO L231 Difference]: Finished difference. Result has 405 places, 621 transitions, 9685 flow [2024-06-28 04:05:43,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9142, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9685, PETRI_PLACES=405, PETRI_TRANSITIONS=621} [2024-06-28 04:05:43,815 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 362 predicate places. [2024-06-28 04:05:43,815 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 621 transitions, 9685 flow [2024-06-28 04:05:43,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:43,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:43,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:05:43,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 04:05:43,816 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:43,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:43,816 INFO L85 PathProgramCache]: Analyzing trace with hash 648290391, now seen corresponding path program 4 times [2024-06-28 04:05:43,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:43,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411425319] [2024-06-28 04:05:43,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:43,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:46,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:05:46,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:46,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411425319] [2024-06-28 04:05:46,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411425319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:46,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:46,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:05:46,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582925704] [2024-06-28 04:05:46,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:46,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:05:46,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:46,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:05:46,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:05:46,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:05:46,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 621 transitions, 9685 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:46,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:46,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:05:46,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:49,812 INFO L124 PetriNetUnfolderBase]: 4418/7024 cut-off events. [2024-06-28 04:05:49,812 INFO L125 PetriNetUnfolderBase]: For 651823/651862 co-relation queries the response was YES. [2024-06-28 04:05:49,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60387 conditions, 7024 events. 4418/7024 cut-off events. For 651823/651862 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 43898 event pairs, 974 based on Foata normal form. 43/7067 useless extension candidates. Maximal degree in co-relation 60206. Up to 6292 conditions per place. [2024-06-28 04:05:49,926 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 440 selfloop transitions, 220 changer transitions 0/664 dead transitions. [2024-06-28 04:05:49,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 664 transitions, 11675 flow [2024-06-28 04:05:49,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:05:49,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:05:49,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-28 04:05:49,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3722943722943723 [2024-06-28 04:05:49,927 INFO L175 Difference]: Start difference. First operand has 405 places, 621 transitions, 9685 flow. Second operand 11 states and 172 transitions. [2024-06-28 04:05:49,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 664 transitions, 11675 flow [2024-06-28 04:05:52,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 664 transitions, 11218 flow, removed 70 selfloop flow, removed 6 redundant places. [2024-06-28 04:05:52,029 INFO L231 Difference]: Finished difference. Result has 410 places, 630 transitions, 9869 flow [2024-06-28 04:05:52,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9232, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9869, PETRI_PLACES=410, PETRI_TRANSITIONS=630} [2024-06-28 04:05:52,030 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 367 predicate places. [2024-06-28 04:05:52,030 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 630 transitions, 9869 flow [2024-06-28 04:05:52,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:52,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:52,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:05:52,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 04:05:52,031 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:52,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:52,031 INFO L85 PathProgramCache]: Analyzing trace with hash 825659061, now seen corresponding path program 5 times [2024-06-28 04:05:52,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:52,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302354841] [2024-06-28 04:05:52,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:52,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:54,576 INFO 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 04:05:54,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:54,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302354841] [2024-06-28 04:05:54,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302354841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:54,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:54,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:05:54,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174860896] [2024-06-28 04:05:54,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:54,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:05:54,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:54,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:05:54,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:05:54,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:05:54,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 630 transitions, 9869 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:54,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:54,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:05:54,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:58,075 INFO L124 PetriNetUnfolderBase]: 4460/7083 cut-off events. [2024-06-28 04:05:58,075 INFO L125 PetriNetUnfolderBase]: For 660304/660343 co-relation queries the response was YES. [2024-06-28 04:05:58,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61270 conditions, 7083 events. 4460/7083 cut-off events. For 660304/660343 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 44187 event pairs, 976 based on Foata normal form. 41/7124 useless extension candidates. Maximal degree in co-relation 61088. Up to 6332 conditions per place. [2024-06-28 04:05:58,176 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 437 selfloop transitions, 225 changer transitions 0/666 dead transitions. [2024-06-28 04:05:58,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 666 transitions, 11837 flow [2024-06-28 04:05:58,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:05:58,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:05:58,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-28 04:05:58,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3761904761904762 [2024-06-28 04:05:58,178 INFO L175 Difference]: Start difference. First operand has 410 places, 630 transitions, 9869 flow. Second operand 10 states and 158 transitions. [2024-06-28 04:05:58,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 666 transitions, 11837 flow [2024-06-28 04:06:00,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 666 transitions, 11362 flow, removed 52 selfloop flow, removed 8 redundant places. [2024-06-28 04:06:00,296 INFO L231 Difference]: Finished difference. Result has 412 places, 639 transitions, 10058 flow [2024-06-28 04:06:00,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9415, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10058, PETRI_PLACES=412, PETRI_TRANSITIONS=639} [2024-06-28 04:06:00,297 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 369 predicate places. [2024-06-28 04:06:00,297 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 639 transitions, 10058 flow [2024-06-28 04:06:00,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:00,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:00,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:00,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 04:06:00,297 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:00,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:00,298 INFO L85 PathProgramCache]: Analyzing trace with hash 825421911, now seen corresponding path program 6 times [2024-06-28 04:06:00,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:00,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503071174] [2024-06-28 04:06:00,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:00,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:02,823 INFO 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 04:06:02,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:02,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503071174] [2024-06-28 04:06:02,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503071174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:02,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:02,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:06:02,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631188579] [2024-06-28 04:06:02,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:02,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:06:02,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:02,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:06:02,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:06:02,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:06:02,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 639 transitions, 10058 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:02,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:02,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:06:02,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:06,480 INFO L124 PetriNetUnfolderBase]: 4454/7077 cut-off events. [2024-06-28 04:06:06,480 INFO L125 PetriNetUnfolderBase]: For 652990/653029 co-relation queries the response was YES. [2024-06-28 04:06:06,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60924 conditions, 7077 events. 4454/7077 cut-off events. For 652990/653029 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 44238 event pairs, 975 based on Foata normal form. 41/7118 useless extension candidates. Maximal degree in co-relation 60742. Up to 6327 conditions per place. [2024-06-28 04:06:06,592 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 436 selfloop transitions, 229 changer transitions 0/669 dead transitions. [2024-06-28 04:06:06,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 669 transitions, 11846 flow [2024-06-28 04:06:06,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:06:06,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:06:06,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 181 transitions. [2024-06-28 04:06:06,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35912698412698413 [2024-06-28 04:06:06,593 INFO L175 Difference]: Start difference. First operand has 412 places, 639 transitions, 10058 flow. Second operand 12 states and 181 transitions. [2024-06-28 04:06:06,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 669 transitions, 11846 flow [2024-06-28 04:06:09,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 669 transitions, 11433 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 04:06:09,109 INFO L231 Difference]: Finished difference. Result has 417 places, 639 transitions, 10119 flow [2024-06-28 04:06:09,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9649, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=229, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10119, PETRI_PLACES=417, PETRI_TRANSITIONS=639} [2024-06-28 04:06:09,109 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 374 predicate places. [2024-06-28 04:06:09,109 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 639 transitions, 10119 flow [2024-06-28 04:06:09,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:09,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:09,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:09,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 04:06:09,110 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:09,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:09,111 INFO L85 PathProgramCache]: Analyzing trace with hash 825421725, now seen corresponding path program 6 times [2024-06-28 04:06:09,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:09,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131997798] [2024-06-28 04:06:09,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:09,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:11,582 INFO 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 04:06:11,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:11,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131997798] [2024-06-28 04:06:11,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131997798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:11,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:11,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:06:11,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672895173] [2024-06-28 04:06:11,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:11,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:06:11,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:11,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:06:11,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:06:11,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:06:11,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 639 transitions, 10119 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:11,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:11,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:06:11,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:14,370 INFO L124 PetriNetUnfolderBase]: 4464/7087 cut-off events. [2024-06-28 04:06:14,370 INFO L125 PetriNetUnfolderBase]: For 649461/649485 co-relation queries the response was YES. [2024-06-28 04:06:14,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61104 conditions, 7087 events. 4464/7087 cut-off events. For 649461/649485 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 44334 event pairs, 990 based on Foata normal form. 25/7112 useless extension candidates. Maximal degree in co-relation 60922. Up to 6565 conditions per place. [2024-06-28 04:06:14,477 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 511 selfloop transitions, 161 changer transitions 0/676 dead transitions. [2024-06-28 04:06:14,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 676 transitions, 11682 flow [2024-06-28 04:06:14,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:06:14,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:06:14,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 04:06:14,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-28 04:06:14,479 INFO L175 Difference]: Start difference. First operand has 417 places, 639 transitions, 10119 flow. Second operand 10 states and 165 transitions. [2024-06-28 04:06:14,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 676 transitions, 11682 flow [2024-06-28 04:06:16,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 676 transitions, 11181 flow, removed 19 selfloop flow, removed 11 redundant places. [2024-06-28 04:06:16,847 INFO L231 Difference]: Finished difference. Result has 416 places, 645 transitions, 10091 flow [2024-06-28 04:06:16,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9618, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10091, PETRI_PLACES=416, PETRI_TRANSITIONS=645} [2024-06-28 04:06:16,847 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 373 predicate places. [2024-06-28 04:06:16,847 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 645 transitions, 10091 flow [2024-06-28 04:06:16,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:16,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:16,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:16,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 04:06:16,848 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:16,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:16,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1491748293, now seen corresponding path program 7 times [2024-06-28 04:06:16,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:16,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078831448] [2024-06-28 04:06:16,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:16,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:19,708 INFO 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 04:06:19,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:19,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078831448] [2024-06-28 04:06:19,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078831448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:19,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:19,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:06:19,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432324244] [2024-06-28 04:06:19,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:19,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:06:19,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:19,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:06:19,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:06:19,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:06:19,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 645 transitions, 10091 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:19,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:19,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:06:19,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:22,229 INFO L124 PetriNetUnfolderBase]: 4469/7091 cut-off events. [2024-06-28 04:06:22,229 INFO L125 PetriNetUnfolderBase]: For 649789/649828 co-relation queries the response was YES. [2024-06-28 04:06:22,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61049 conditions, 7091 events. 4469/7091 cut-off events. For 649789/649828 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 44226 event pairs, 1189 based on Foata normal form. 40/7131 useless extension candidates. Maximal degree in co-relation 60867. Up to 6722 conditions per place. [2024-06-28 04:06:22,331 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 598 selfloop transitions, 70 changer transitions 0/672 dead transitions. [2024-06-28 04:06:22,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 672 transitions, 11631 flow [2024-06-28 04:06:22,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:06:22,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:06:22,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-28 04:06:22,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3945578231292517 [2024-06-28 04:06:22,333 INFO L175 Difference]: Start difference. First operand has 416 places, 645 transitions, 10091 flow. Second operand 7 states and 116 transitions. [2024-06-28 04:06:22,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 672 transitions, 11631 flow [2024-06-28 04:06:24,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 672 transitions, 11237 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-28 04:06:24,344 INFO L231 Difference]: Finished difference. Result has 415 places, 648 transitions, 9956 flow [2024-06-28 04:06:24,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9699, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9956, PETRI_PLACES=415, PETRI_TRANSITIONS=648} [2024-06-28 04:06:24,345 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 372 predicate places. [2024-06-28 04:06:24,345 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 648 transitions, 9956 flow [2024-06-28 04:06:24,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:24,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:24,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:24,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 04:06:24,345 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:24,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:24,345 INFO L85 PathProgramCache]: Analyzing trace with hash 519314397, now seen corresponding path program 8 times [2024-06-28 04:06:24,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:24,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937847264] [2024-06-28 04:06:24,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:24,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:26,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:26,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:26,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937847264] [2024-06-28 04:06:26,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937847264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:26,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:26,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:06:26,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178256766] [2024-06-28 04:06:26,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:26,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:06:26,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:26,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:06:26,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:06:26,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:06:26,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 648 transitions, 9956 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:26,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:26,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:06:26,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:29,235 INFO L124 PetriNetUnfolderBase]: 4471/7094 cut-off events. [2024-06-28 04:06:29,236 INFO L125 PetriNetUnfolderBase]: For 663847/663886 co-relation queries the response was YES. [2024-06-28 04:06:29,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61239 conditions, 7094 events. 4471/7094 cut-off events. For 663847/663886 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 44261 event pairs, 1001 based on Foata normal form. 41/7135 useless extension candidates. Maximal degree in co-relation 61056. Up to 6671 conditions per place. [2024-06-28 04:06:29,358 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 552 selfloop transitions, 115 changer transitions 0/671 dead transitions. [2024-06-28 04:06:29,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 671 transitions, 11482 flow [2024-06-28 04:06:29,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:06:29,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:06:29,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-28 04:06:29,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391156462585034 [2024-06-28 04:06:29,359 INFO L175 Difference]: Start difference. First operand has 415 places, 648 transitions, 9956 flow. Second operand 7 states and 115 transitions. [2024-06-28 04:06:29,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 671 transitions, 11482 flow [2024-06-28 04:06:31,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 671 transitions, 11199 flow, removed 74 selfloop flow, removed 5 redundant places. [2024-06-28 04:06:31,711 INFO L231 Difference]: Finished difference. Result has 417 places, 651 transitions, 10031 flow [2024-06-28 04:06:31,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9673, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10031, PETRI_PLACES=417, PETRI_TRANSITIONS=651} [2024-06-28 04:06:31,711 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 374 predicate places. [2024-06-28 04:06:31,711 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 651 transitions, 10031 flow [2024-06-28 04:06:31,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:31,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:31,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:31,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 04:06:31,712 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:31,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:31,712 INFO L85 PathProgramCache]: Analyzing trace with hash 519314583, now seen corresponding path program 7 times [2024-06-28 04:06:31,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:31,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589930422] [2024-06-28 04:06:31,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:31,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:34,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:34,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:34,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589930422] [2024-06-28 04:06:34,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589930422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:34,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:34,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:06:34,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306315630] [2024-06-28 04:06:34,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:34,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:06:34,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:34,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:06:34,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:06:34,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:06:34,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 651 transitions, 10031 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:34,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:34,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:06:34,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:37,202 INFO L124 PetriNetUnfolderBase]: 4459/7082 cut-off events. [2024-06-28 04:06:37,202 INFO L125 PetriNetUnfolderBase]: For 668374/668413 co-relation queries the response was YES. [2024-06-28 04:06:37,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60973 conditions, 7082 events. 4459/7082 cut-off events. For 668374/668413 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 44290 event pairs, 980 based on Foata normal form. 43/7125 useless extension candidates. Maximal degree in co-relation 60789. Up to 6532 conditions per place. [2024-06-28 04:06:37,306 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 519 selfloop transitions, 153 changer transitions 0/676 dead transitions. [2024-06-28 04:06:37,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 676 transitions, 11663 flow [2024-06-28 04:06:37,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:06:37,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:06:37,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 04:06:37,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39880952380952384 [2024-06-28 04:06:37,307 INFO L175 Difference]: Start difference. First operand has 417 places, 651 transitions, 10031 flow. Second operand 8 states and 134 transitions. [2024-06-28 04:06:37,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 676 transitions, 11663 flow [2024-06-28 04:06:39,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 676 transitions, 11279 flow, removed 82 selfloop flow, removed 5 redundant places. [2024-06-28 04:06:39,542 INFO L231 Difference]: Finished difference. Result has 420 places, 651 transitions, 9981 flow [2024-06-28 04:06:39,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9647, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9981, PETRI_PLACES=420, PETRI_TRANSITIONS=651} [2024-06-28 04:06:39,542 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 377 predicate places. [2024-06-28 04:06:39,542 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 651 transitions, 9981 flow [2024-06-28 04:06:39,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:39,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:39,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:39,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 04:06:39,543 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:39,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:39,543 INFO L85 PathProgramCache]: Analyzing trace with hash 524556807, now seen corresponding path program 9 times [2024-06-28 04:06:39,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:39,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610210520] [2024-06-28 04:06:39,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:39,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:39,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:42,749 INFO 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 04:06:42,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:42,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610210520] [2024-06-28 04:06:42,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610210520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:42,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:42,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:06:42,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649751718] [2024-06-28 04:06:42,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:42,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:06:42,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:42,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:06:42,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:06:42,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:06:42,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 651 transitions, 9981 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:42,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:42,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:06:42,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:45,100 INFO L124 PetriNetUnfolderBase]: 4464/7095 cut-off events. [2024-06-28 04:06:45,100 INFO L125 PetriNetUnfolderBase]: For 669910/669949 co-relation queries the response was YES. [2024-06-28 04:06:45,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61219 conditions, 7095 events. 4464/7095 cut-off events. For 669910/669949 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 44367 event pairs, 1187 based on Foata normal form. 40/7135 useless extension candidates. Maximal degree in co-relation 61034. Up to 6636 conditions per place. [2024-06-28 04:06:45,212 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 592 selfloop transitions, 87 changer transitions 0/683 dead transitions. [2024-06-28 04:06:45,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 683 transitions, 11567 flow [2024-06-28 04:06:45,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:06:45,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:06:45,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 04:06:45,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-28 04:06:45,213 INFO L175 Difference]: Start difference. First operand has 420 places, 651 transitions, 9981 flow. Second operand 8 states and 133 transitions. [2024-06-28 04:06:45,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 683 transitions, 11567 flow [2024-06-28 04:06:47,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 683 transitions, 11305 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 04:06:47,412 INFO L231 Difference]: Finished difference. Result has 421 places, 654 transitions, 10018 flow [2024-06-28 04:06:47,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9719, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10018, PETRI_PLACES=421, PETRI_TRANSITIONS=654} [2024-06-28 04:06:47,413 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 378 predicate places. [2024-06-28 04:06:47,413 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 654 transitions, 10018 flow [2024-06-28 04:06:47,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:47,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:47,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:47,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 04:06:47,413 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:47,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:47,414 INFO L85 PathProgramCache]: Analyzing trace with hash 524855337, now seen corresponding path program 10 times [2024-06-28 04:06:47,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:47,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501972727] [2024-06-28 04:06:47,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:47,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:47,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:50,307 INFO 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 04:06:50,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:50,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501972727] [2024-06-28 04:06:50,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501972727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:50,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:50,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:06:50,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238771096] [2024-06-28 04:06:50,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:50,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:06:50,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:50,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:06:50,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:06:50,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:06:50,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 654 transitions, 10018 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:50,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:50,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:06:50,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:52,743 INFO L124 PetriNetUnfolderBase]: 4469/7104 cut-off events. [2024-06-28 04:06:52,743 INFO L125 PetriNetUnfolderBase]: For 674581/674620 co-relation queries the response was YES. [2024-06-28 04:06:52,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61550 conditions, 7104 events. 4469/7104 cut-off events. For 674581/674620 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 44513 event pairs, 1185 based on Foata normal form. 40/7144 useless extension candidates. Maximal degree in co-relation 61365. Up to 6623 conditions per place. [2024-06-28 04:06:52,857 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 583 selfloop transitions, 95 changer transitions 0/682 dead transitions. [2024-06-28 04:06:52,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 682 transitions, 11592 flow [2024-06-28 04:06:52,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:06:52,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:06:52,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-28 04:06:52,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3898809523809524 [2024-06-28 04:06:52,858 INFO L175 Difference]: Start difference. First operand has 421 places, 654 transitions, 10018 flow. Second operand 8 states and 131 transitions. [2024-06-28 04:06:52,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 682 transitions, 11592 flow [2024-06-28 04:06:55,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 682 transitions, 11317 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-28 04:06:55,332 INFO L231 Difference]: Finished difference. Result has 423 places, 657 transitions, 10063 flow [2024-06-28 04:06:55,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9743, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=559, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10063, PETRI_PLACES=423, PETRI_TRANSITIONS=657} [2024-06-28 04:06:55,332 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 380 predicate places. [2024-06-28 04:06:55,332 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 657 transitions, 10063 flow [2024-06-28 04:06:55,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:55,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:55,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:55,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 04:06:55,333 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:55,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:55,333 INFO L85 PathProgramCache]: Analyzing trace with hash 524855709, now seen corresponding path program 1 times [2024-06-28 04:06:55,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:55,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396286214] [2024-06-28 04:06:55,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:55,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:58,277 INFO 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 04:06:58,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:58,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396286214] [2024-06-28 04:06:58,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396286214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:58,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:58,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:06:58,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572754811] [2024-06-28 04:06:58,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:58,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:06:58,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:58,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:06:58,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:06:58,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:06:58,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 657 transitions, 10063 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:58,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:58,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:06:58,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:01,160 INFO L124 PetriNetUnfolderBase]: 4500/7158 cut-off events. [2024-06-28 04:07:01,160 INFO L125 PetriNetUnfolderBase]: For 706526/706565 co-relation queries the response was YES. [2024-06-28 04:07:01,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62665 conditions, 7158 events. 4500/7158 cut-off events. For 706526/706565 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 44995 event pairs, 1399 based on Foata normal form. 41/7199 useless extension candidates. Maximal degree in co-relation 62479. Up to 6733 conditions per place. [2024-06-28 04:07:01,261 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 609 selfloop transitions, 86 changer transitions 0/699 dead transitions. [2024-06-28 04:07:01,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 699 transitions, 12137 flow [2024-06-28 04:07:01,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:07:01,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:07:01,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-28 04:07:01,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38392857142857145 [2024-06-28 04:07:01,262 INFO L175 Difference]: Start difference. First operand has 423 places, 657 transitions, 10063 flow. Second operand 8 states and 129 transitions. [2024-06-28 04:07:01,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 699 transitions, 12137 flow [2024-06-28 04:07:03,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 699 transitions, 11834 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-06-28 04:07:03,524 INFO L231 Difference]: Finished difference. Result has 428 places, 673 transitions, 10410 flow [2024-06-28 04:07:03,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9765, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=574, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10410, PETRI_PLACES=428, PETRI_TRANSITIONS=673} [2024-06-28 04:07:03,524 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 385 predicate places. [2024-06-28 04:07:03,524 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 673 transitions, 10410 flow [2024-06-28 04:07:03,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:03,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:03,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:03,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 04:07:03,524 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:03,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:03,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1501846749, now seen corresponding path program 2 times [2024-06-28 04:07:03,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:03,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673995124] [2024-06-28 04:07:03,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:03,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:05,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:07:05,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:05,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673995124] [2024-06-28 04:07:05,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673995124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:05,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:05,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:07:05,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420047389] [2024-06-28 04:07:05,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:05,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:07:05,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:05,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:07:05,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:07:05,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:07:05,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 673 transitions, 10410 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:05,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:05,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:07:05,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:08,708 INFO L124 PetriNetUnfolderBase]: 4518/7185 cut-off events. [2024-06-28 04:07:08,708 INFO L125 PetriNetUnfolderBase]: For 727758/727797 co-relation queries the response was YES. [2024-06-28 04:07:08,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63762 conditions, 7185 events. 4518/7185 cut-off events. For 727758/727797 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 45210 event pairs, 1392 based on Foata normal form. 32/7217 useless extension candidates. Maximal degree in co-relation 63572. Up to 6787 conditions per place. [2024-06-28 04:07:08,820 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 597 selfloop transitions, 99 changer transitions 0/700 dead transitions. [2024-06-28 04:07:08,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 700 transitions, 12372 flow [2024-06-28 04:07:08,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:07:08,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:07:08,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-06-28 04:07:08,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37202380952380953 [2024-06-28 04:07:08,822 INFO L175 Difference]: Start difference. First operand has 428 places, 673 transitions, 10410 flow. Second operand 8 states and 125 transitions. [2024-06-28 04:07:08,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 700 transitions, 12372 flow [2024-06-28 04:07:11,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 700 transitions, 12219 flow, removed 56 selfloop flow, removed 3 redundant places. [2024-06-28 04:07:11,405 INFO L231 Difference]: Finished difference. Result has 434 places, 683 transitions, 10835 flow [2024-06-28 04:07:11,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10265, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=673, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10835, PETRI_PLACES=434, PETRI_TRANSITIONS=683} [2024-06-28 04:07:11,406 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 391 predicate places. [2024-06-28 04:07:11,406 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 683 transitions, 10835 flow [2024-06-28 04:07:11,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:11,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:11,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:11,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 04:07:11,406 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:11,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:11,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1470560433, now seen corresponding path program 8 times [2024-06-28 04:07:11,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:11,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080146640] [2024-06-28 04:07:11,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:11,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:13,999 INFO 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 04:07:13,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:13,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080146640] [2024-06-28 04:07:14,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080146640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:14,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:14,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:07:14,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362250883] [2024-06-28 04:07:14,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:14,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:07:14,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:14,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:07:14,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:07:14,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:07:14,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 683 transitions, 10835 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:14,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:14,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:07:14,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:17,339 INFO L124 PetriNetUnfolderBase]: 4528/7184 cut-off events. [2024-06-28 04:07:17,339 INFO L125 PetriNetUnfolderBase]: For 726401/726440 co-relation queries the response was YES. [2024-06-28 04:07:17,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64101 conditions, 7184 events. 4528/7184 cut-off events. For 726401/726440 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 44895 event pairs, 963 based on Foata normal form. 41/7225 useless extension candidates. Maximal degree in co-relation 63909. Up to 6624 conditions per place. [2024-06-28 04:07:17,463 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 544 selfloop transitions, 165 changer transitions 0/713 dead transitions. [2024-06-28 04:07:17,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 713 transitions, 12626 flow [2024-06-28 04:07:17,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:07:17,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:07:17,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 04:07:17,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37857142857142856 [2024-06-28 04:07:17,464 INFO L175 Difference]: Start difference. First operand has 434 places, 683 transitions, 10835 flow. Second operand 10 states and 159 transitions. [2024-06-28 04:07:17,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 713 transitions, 12626 flow [2024-06-28 04:07:20,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 713 transitions, 12308 flow, removed 81 selfloop flow, removed 6 redundant places. [2024-06-28 04:07:20,542 INFO L231 Difference]: Finished difference. Result has 438 places, 686 transitions, 10933 flow [2024-06-28 04:07:20,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10519, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10933, PETRI_PLACES=438, PETRI_TRANSITIONS=686} [2024-06-28 04:07:20,543 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 395 predicate places. [2024-06-28 04:07:20,543 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 686 transitions, 10933 flow [2024-06-28 04:07:20,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:20,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:20,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:20,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 04:07:20,544 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:20,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:20,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1470565827, now seen corresponding path program 11 times [2024-06-28 04:07:20,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:20,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184653322] [2024-06-28 04:07:20,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:20,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:23,124 INFO 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 04:07:23,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:23,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184653322] [2024-06-28 04:07:23,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184653322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:23,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:23,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:07:23,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394005268] [2024-06-28 04:07:23,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:23,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:07:23,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:23,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:07:23,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:07:23,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:07:23,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 686 transitions, 10933 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:23,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:23,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:07:23,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:25,966 INFO L124 PetriNetUnfolderBase]: 4533/7191 cut-off events. [2024-06-28 04:07:25,967 INFO L125 PetriNetUnfolderBase]: For 722955/722994 co-relation queries the response was YES. [2024-06-28 04:07:26,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64368 conditions, 7191 events. 4533/7191 cut-off events. For 722955/722994 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 44940 event pairs, 983 based on Foata normal form. 40/7231 useless extension candidates. Maximal degree in co-relation 64176. Up to 6721 conditions per place. [2024-06-28 04:07:26,084 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 565 selfloop transitions, 146 changer transitions 0/715 dead transitions. [2024-06-28 04:07:26,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 715 transitions, 12877 flow [2024-06-28 04:07:26,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:07:26,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:07:26,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-28 04:07:26,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-06-28 04:07:26,086 INFO L175 Difference]: Start difference. First operand has 438 places, 686 transitions, 10933 flow. Second operand 9 states and 140 transitions. [2024-06-28 04:07:26,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 715 transitions, 12877 flow [2024-06-28 04:07:28,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 715 transitions, 12462 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 04:07:28,997 INFO L231 Difference]: Finished difference. Result has 439 places, 692 transitions, 11118 flow [2024-06-28 04:07:28,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10520, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=686, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11118, PETRI_PLACES=439, PETRI_TRANSITIONS=692} [2024-06-28 04:07:28,997 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 396 predicate places. [2024-06-28 04:07:28,998 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 692 transitions, 11118 flow [2024-06-28 04:07:28,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:28,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:28,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:28,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 04:07:28,998 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:28,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:28,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1470560247, now seen corresponding path program 12 times [2024-06-28 04:07:28,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:28,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169885894] [2024-06-28 04:07:29,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:29,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:31,504 INFO 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 04:07:31,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:31,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169885894] [2024-06-28 04:07:31,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169885894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:31,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:31,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:07:31,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792306192] [2024-06-28 04:07:31,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:31,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:07:31,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:31,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:07:31,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:07:31,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:07:31,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 692 transitions, 11118 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:31,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:31,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:07:31,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:34,300 INFO L124 PetriNetUnfolderBase]: 4530/7187 cut-off events. [2024-06-28 04:07:34,300 INFO L125 PetriNetUnfolderBase]: For 722329/722368 co-relation queries the response was YES. [2024-06-28 04:07:34,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64434 conditions, 7187 events. 4530/7187 cut-off events. For 722329/722368 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 44912 event pairs, 981 based on Foata normal form. 40/7227 useless extension candidates. Maximal degree in co-relation 64241. Up to 6759 conditions per place. [2024-06-28 04:07:34,421 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 589 selfloop transitions, 121 changer transitions 0/714 dead transitions. [2024-06-28 04:07:34,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 714 transitions, 12624 flow [2024-06-28 04:07:34,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:07:34,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:07:34,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-28 04:07:34,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2024-06-28 04:07:34,423 INFO L175 Difference]: Start difference. First operand has 439 places, 692 transitions, 11118 flow. Second operand 9 states and 138 transitions. [2024-06-28 04:07:34,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 714 transitions, 12624 flow [2024-06-28 04:07:37,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 714 transitions, 12268 flow, removed 101 selfloop flow, removed 5 redundant places. [2024-06-28 04:07:37,013 INFO L231 Difference]: Finished difference. Result has 443 places, 692 transitions, 11011 flow [2024-06-28 04:07:37,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10762, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11011, PETRI_PLACES=443, PETRI_TRANSITIONS=692} [2024-06-28 04:07:37,013 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 400 predicate places. [2024-06-28 04:07:37,013 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 692 transitions, 11011 flow [2024-06-28 04:07:37,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:37,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:37,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:37,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 04:07:37,014 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:37,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:37,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1470571779, now seen corresponding path program 3 times [2024-06-28 04:07:37,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:37,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132149594] [2024-06-28 04:07:37,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:37,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:39,433 INFO 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 04:07:39,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:39,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132149594] [2024-06-28 04:07:39,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132149594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:39,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:39,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:07:39,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884194995] [2024-06-28 04:07:39,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:39,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:07:39,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:39,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:07:39,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:07:39,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:07:39,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 692 transitions, 11011 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:39,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:39,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:07:39,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:42,102 INFO L124 PetriNetUnfolderBase]: 4524/7198 cut-off events. [2024-06-28 04:07:42,102 INFO L125 PetriNetUnfolderBase]: For 731817/731856 co-relation queries the response was YES. [2024-06-28 04:07:42,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64357 conditions, 7198 events. 4524/7198 cut-off events. For 731817/731856 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 45313 event pairs, 1389 based on Foata normal form. 32/7230 useless extension candidates. Maximal degree in co-relation 64162. Up to 6859 conditions per place. [2024-06-28 04:07:42,489 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 642 selfloop transitions, 62 changer transitions 0/708 dead transitions. [2024-06-28 04:07:42,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 708 transitions, 12499 flow [2024-06-28 04:07:42,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:07:42,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:07:42,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2024-06-28 04:07:42,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3707482993197279 [2024-06-28 04:07:42,490 INFO L175 Difference]: Start difference. First operand has 443 places, 692 transitions, 11011 flow. Second operand 7 states and 109 transitions. [2024-06-28 04:07:42,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 708 transitions, 12499 flow [2024-06-28 04:07:45,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 708 transitions, 12087 flow, removed 69 selfloop flow, removed 8 redundant places. [2024-06-28 04:07:45,126 INFO L231 Difference]: Finished difference. Result has 442 places, 692 transitions, 10735 flow [2024-06-28 04:07:45,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10599, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=630, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10735, PETRI_PLACES=442, PETRI_TRANSITIONS=692} [2024-06-28 04:07:45,126 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 399 predicate places. [2024-06-28 04:07:45,126 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 692 transitions, 10735 flow [2024-06-28 04:07:45,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:45,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:45,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:45,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 04:07:45,127 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:45,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:45,128 INFO L85 PathProgramCache]: Analyzing trace with hash 528580173, now seen corresponding path program 9 times [2024-06-28 04:07:45,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:45,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751532774] [2024-06-28 04:07:45,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:45,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:47,699 INFO 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 04:07:47,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:47,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751532774] [2024-06-28 04:07:47,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751532774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:47,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:47,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:07:47,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32727243] [2024-06-28 04:07:47,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:47,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:07:47,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:47,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:07:47,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:07:47,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:07:47,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 692 transitions, 10735 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:47,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:47,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:07:47,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:51,196 INFO L124 PetriNetUnfolderBase]: 4518/7169 cut-off events. [2024-06-28 04:07:51,196 INFO L125 PetriNetUnfolderBase]: For 731116/731155 co-relation queries the response was YES. [2024-06-28 04:07:51,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63904 conditions, 7169 events. 4518/7169 cut-off events. For 731116/731155 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 44806 event pairs, 964 based on Foata normal form. 41/7210 useless extension candidates. Maximal degree in co-relation 63708. Up to 6614 conditions per place. [2024-06-28 04:07:51,315 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 540 selfloop transitions, 173 changer transitions 0/717 dead transitions. [2024-06-28 04:07:51,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 717 transitions, 12269 flow [2024-06-28 04:07:51,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:07:51,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:07:51,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 04:07:51,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-06-28 04:07:51,316 INFO L175 Difference]: Start difference. First operand has 442 places, 692 transitions, 10735 flow. Second operand 10 states and 155 transitions. [2024-06-28 04:07:51,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 717 transitions, 12269 flow [2024-06-28 04:07:54,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 717 transitions, 12095 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 04:07:54,415 INFO L231 Difference]: Finished difference. Result has 447 places, 692 transitions, 10924 flow [2024-06-28 04:07:54,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10561, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10924, PETRI_PLACES=447, PETRI_TRANSITIONS=692} [2024-06-28 04:07:54,415 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 404 predicate places. [2024-06-28 04:07:54,416 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 692 transitions, 10924 flow [2024-06-28 04:07:54,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:54,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:54,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:54,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 04:07:54,416 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:54,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:54,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1129231699, now seen corresponding path program 10 times [2024-06-28 04:07:54,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:54,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001861705] [2024-06-28 04:07:54,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:54,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:56,960 INFO 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 04:07:56,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:56,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001861705] [2024-06-28 04:07:56,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001861705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:56,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:56,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:07:56,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200098450] [2024-06-28 04:07:56,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:56,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:07:56,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:56,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:07:56,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:07:56,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:07:56,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 692 transitions, 10924 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:56,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:56,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:07:56,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:00,447 INFO L124 PetriNetUnfolderBase]: 4544/7201 cut-off events. [2024-06-28 04:08:00,447 INFO L125 PetriNetUnfolderBase]: For 755931/755964 co-relation queries the response was YES. [2024-06-28 04:08:00,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64821 conditions, 7201 events. 4544/7201 cut-off events. For 755931/755964 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 44915 event pairs, 1009 based on Foata normal form. 19/7220 useless extension candidates. Maximal degree in co-relation 64624. Up to 6448 conditions per place. [2024-06-28 04:08:00,565 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 477 selfloop transitions, 237 changer transitions 0/718 dead transitions. [2024-06-28 04:08:00,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 718 transitions, 12938 flow [2024-06-28 04:08:00,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:08:00,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:08:00,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-06-28 04:08:00,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619047619047619 [2024-06-28 04:08:00,566 INFO L175 Difference]: Start difference. First operand has 447 places, 692 transitions, 10924 flow. Second operand 10 states and 152 transitions. [2024-06-28 04:08:00,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 718 transitions, 12938 flow [2024-06-28 04:08:03,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 718 transitions, 12504 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 04:08:03,832 INFO L231 Difference]: Finished difference. Result has 446 places, 698 transitions, 11099 flow [2024-06-28 04:08:03,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10494, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11099, PETRI_PLACES=446, PETRI_TRANSITIONS=698} [2024-06-28 04:08:03,833 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 403 predicate places. [2024-06-28 04:08:03,833 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 698 transitions, 11099 flow [2024-06-28 04:08:03,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:03,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:03,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:03,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 04:08:03,833 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:03,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:03,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1139956459, now seen corresponding path program 11 times [2024-06-28 04:08:03,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:03,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443620450] [2024-06-28 04:08:03,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:03,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:06,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:06,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:06,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443620450] [2024-06-28 04:08:06,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443620450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:06,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:06,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:08:06,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878107578] [2024-06-28 04:08:06,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:06,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:08:06,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:06,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:08:06,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:08:06,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:08:06,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 698 transitions, 11099 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:06,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:06,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:08:06,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:09,862 INFO L124 PetriNetUnfolderBase]: 4538/7193 cut-off events. [2024-06-28 04:08:09,862 INFO L125 PetriNetUnfolderBase]: For 747215/747248 co-relation queries the response was YES. [2024-06-28 04:08:09,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64670 conditions, 7193 events. 4538/7193 cut-off events. For 747215/747248 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 44866 event pairs, 1011 based on Foata normal form. 19/7212 useless extension candidates. Maximal degree in co-relation 64473. Up to 6443 conditions per place. [2024-06-28 04:08:09,972 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 479 selfloop transitions, 231 changer transitions 0/714 dead transitions. [2024-06-28 04:08:09,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 714 transitions, 12775 flow [2024-06-28 04:08:09,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:08:09,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:08:09,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-28 04:08:09,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 04:08:09,973 INFO L175 Difference]: Start difference. First operand has 446 places, 698 transitions, 11099 flow. Second operand 8 states and 126 transitions. [2024-06-28 04:08:09,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 714 transitions, 12775 flow [2024-06-28 04:08:12,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 714 transitions, 12233 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-28 04:08:12,765 INFO L231 Difference]: Finished difference. Result has 447 places, 698 transitions, 11026 flow [2024-06-28 04:08:12,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10557, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11026, PETRI_PLACES=447, PETRI_TRANSITIONS=698} [2024-06-28 04:08:12,766 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 404 predicate places. [2024-06-28 04:08:12,766 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 698 transitions, 11026 flow [2024-06-28 04:08:12,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:12,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:12,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:12,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 04:08:12,767 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:12,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:12,767 INFO L85 PathProgramCache]: Analyzing trace with hash 144649713, now seen corresponding path program 12 times [2024-06-28 04:08:12,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:12,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353809432] [2024-06-28 04:08:12,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:12,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:15,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:15,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:15,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353809432] [2024-06-28 04:08:15,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353809432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:15,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:15,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:08:15,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753897901] [2024-06-28 04:08:15,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:15,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:08:15,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:15,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:08:15,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:08:15,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:08:15,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 698 transitions, 11026 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:15,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:15,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:08:15,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:19,048 INFO L124 PetriNetUnfolderBase]: 4532/7185 cut-off events. [2024-06-28 04:08:19,049 INFO L125 PetriNetUnfolderBase]: For 750122/750155 co-relation queries the response was YES. [2024-06-28 04:08:19,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64424 conditions, 7185 events. 4532/7185 cut-off events. For 750122/750155 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 44877 event pairs, 1008 based on Foata normal form. 19/7204 useless extension candidates. Maximal degree in co-relation 64226. Up to 6438 conditions per place. [2024-06-28 04:08:19,170 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 472 selfloop transitions, 241 changer transitions 0/717 dead transitions. [2024-06-28 04:08:19,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 717 transitions, 12532 flow [2024-06-28 04:08:19,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:08:19,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:08:19,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 160 transitions. [2024-06-28 04:08:19,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463203463203463 [2024-06-28 04:08:19,171 INFO L175 Difference]: Start difference. First operand has 447 places, 698 transitions, 11026 flow. Second operand 11 states and 160 transitions. [2024-06-28 04:08:19,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 717 transitions, 12532 flow [2024-06-28 04:08:22,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 717 transitions, 12023 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 04:08:22,425 INFO L231 Difference]: Finished difference. Result has 451 places, 698 transitions, 11006 flow [2024-06-28 04:08:22,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10517, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11006, PETRI_PLACES=451, PETRI_TRANSITIONS=698} [2024-06-28 04:08:22,425 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 408 predicate places. [2024-06-28 04:08:22,425 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 698 transitions, 11006 flow [2024-06-28 04:08:22,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:22,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:22,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:22,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 04:08:22,426 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:22,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:22,426 INFO L85 PathProgramCache]: Analyzing trace with hash 144649527, now seen corresponding path program 13 times [2024-06-28 04:08:22,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:22,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39537901] [2024-06-28 04:08:22,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:22,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:22,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:24,680 INFO 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 04:08:24,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:24,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39537901] [2024-06-28 04:08:24,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39537901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:24,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:24,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:08:24,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615223323] [2024-06-28 04:08:24,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:24,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:08:24,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:24,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:08:24,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:08:24,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:08:24,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 698 transitions, 11006 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:24,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:24,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:08:24,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:27,306 INFO L124 PetriNetUnfolderBase]: 4537/7192 cut-off events. [2024-06-28 04:08:27,306 INFO L125 PetriNetUnfolderBase]: For 758603/758636 co-relation queries the response was YES. [2024-06-28 04:08:27,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64669 conditions, 7192 events. 4537/7192 cut-off events. For 758603/758636 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 44870 event pairs, 1016 based on Foata normal form. 18/7210 useless extension candidates. Maximal degree in co-relation 64470. Up to 6670 conditions per place. [2024-06-28 04:08:27,426 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 546 selfloop transitions, 163 changer transitions 0/713 dead transitions. [2024-06-28 04:08:27,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 713 transitions, 12588 flow [2024-06-28 04:08:27,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:08:27,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:08:27,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 119 transitions. [2024-06-28 04:08:27,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-28 04:08:27,428 INFO L175 Difference]: Start difference. First operand has 451 places, 698 transitions, 11006 flow. Second operand 8 states and 119 transitions. [2024-06-28 04:08:27,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 713 transitions, 12588 flow [2024-06-28 04:08:30,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 713 transitions, 12048 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 04:08:30,812 INFO L231 Difference]: Finished difference. Result has 448 places, 701 transitions, 10935 flow [2024-06-28 04:08:30,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10468, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10935, PETRI_PLACES=448, PETRI_TRANSITIONS=701} [2024-06-28 04:08:30,812 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 405 predicate places. [2024-06-28 04:08:30,812 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 701 transitions, 10935 flow [2024-06-28 04:08:30,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:30,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:30,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:30,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 04:08:30,813 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:30,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:30,814 INFO L85 PathProgramCache]: Analyzing trace with hash 156008361, now seen corresponding path program 1 times [2024-06-28 04:08:30,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:30,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253510927] [2024-06-28 04:08:30,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:30,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:34,526 INFO 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 04:08:34,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:34,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253510927] [2024-06-28 04:08:34,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253510927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:34,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:34,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:08:34,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238844895] [2024-06-28 04:08:34,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:34,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:08:34,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:34,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:08:34,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:08:34,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:08:34,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 701 transitions, 10935 flow. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 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 04:08:34,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:34,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:08:34,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:37,502 INFO L124 PetriNetUnfolderBase]: 4557/7216 cut-off events. [2024-06-28 04:08:37,503 INFO L125 PetriNetUnfolderBase]: For 777594/777602 co-relation queries the response was YES. [2024-06-28 04:08:37,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64425 conditions, 7216 events. 4557/7216 cut-off events. For 777594/777602 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 44893 event pairs, 977 based on Foata normal form. 7/7223 useless extension candidates. Maximal degree in co-relation 64225. Up to 6650 conditions per place. [2024-06-28 04:08:37,628 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 632 selfloop transitions, 92 changer transitions 0/728 dead transitions. [2024-06-28 04:08:37,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 728 transitions, 12607 flow [2024-06-28 04:08:37,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:08:37,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:08:37,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-06-28 04:08:37,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37202380952380953 [2024-06-28 04:08:37,630 INFO L175 Difference]: Start difference. First operand has 448 places, 701 transitions, 10935 flow. Second operand 8 states and 125 transitions. [2024-06-28 04:08:37,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 728 transitions, 12607 flow [2024-06-28 04:08:40,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 728 transitions, 12176 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-28 04:08:40,547 INFO L231 Difference]: Finished difference. Result has 451 places, 705 transitions, 10768 flow [2024-06-28 04:08:40,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10504, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=610, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10768, PETRI_PLACES=451, PETRI_TRANSITIONS=705} [2024-06-28 04:08:40,548 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 408 predicate places. [2024-06-28 04:08:40,548 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 705 transitions, 10768 flow [2024-06-28 04:08:40,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 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 04:08:40,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:40,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:40,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 04:08:40,548 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:40,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:40,549 INFO L85 PathProgramCache]: Analyzing trace with hash 431619215, now seen corresponding path program 14 times [2024-06-28 04:08:40,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:40,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558122203] [2024-06-28 04:08:40,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:40,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:40,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:43,209 INFO 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 04:08:43,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:43,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558122203] [2024-06-28 04:08:43,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558122203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:43,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:43,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:08:43,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742450331] [2024-06-28 04:08:43,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:43,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:08:43,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:43,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:08:43,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:08:43,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:08:43,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 705 transitions, 10768 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:43,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:43,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:08:43,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:45,928 INFO L124 PetriNetUnfolderBase]: 4554/7229 cut-off events. [2024-06-28 04:08:45,928 INFO L125 PetriNetUnfolderBase]: For 763532/763571 co-relation queries the response was YES. [2024-06-28 04:08:46,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64388 conditions, 7229 events. 4554/7229 cut-off events. For 763532/763571 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 45327 event pairs, 988 based on Foata normal form. 40/7269 useless extension candidates. Maximal degree in co-relation 64186. Up to 6691 conditions per place. [2024-06-28 04:08:46,052 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 550 selfloop transitions, 173 changer transitions 0/727 dead transitions. [2024-06-28 04:08:46,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 727 transitions, 12406 flow [2024-06-28 04:08:46,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:08:46,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:08:46,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-28 04:08:46,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 04:08:46,053 INFO L175 Difference]: Start difference. First operand has 451 places, 705 transitions, 10768 flow. Second operand 8 states and 126 transitions. [2024-06-28 04:08:46,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 727 transitions, 12406 flow [2024-06-28 04:08:48,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 727 transitions, 12284 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 04:08:48,979 INFO L231 Difference]: Finished difference. Result has 455 places, 708 transitions, 11150 flow [2024-06-28 04:08:48,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10646, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11150, PETRI_PLACES=455, PETRI_TRANSITIONS=708} [2024-06-28 04:08:48,979 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 412 predicate places. [2024-06-28 04:08:48,980 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 708 transitions, 11150 flow [2024-06-28 04:08:48,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:48,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:48,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:48,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 04:08:48,980 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:48,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:48,981 INFO L85 PathProgramCache]: Analyzing trace with hash -2136275667, now seen corresponding path program 11 times [2024-06-28 04:08:48,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:48,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389314249] [2024-06-28 04:08:48,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:48,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:51,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:51,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:51,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389314249] [2024-06-28 04:08:51,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389314249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:51,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:51,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:08:51,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770059144] [2024-06-28 04:08:51,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:51,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:08:51,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:51,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:08:51,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:08:51,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:08:51,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 708 transitions, 11150 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:51,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:51,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:08:51,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:54,970 INFO L124 PetriNetUnfolderBase]: 4564/7234 cut-off events. [2024-06-28 04:08:54,970 INFO L125 PetriNetUnfolderBase]: For 800518/800526 co-relation queries the response was YES. [2024-06-28 04:08:55,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64761 conditions, 7234 events. 4564/7234 cut-off events. For 800518/800526 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 45122 event pairs, 978 based on Foata normal form. 11/7245 useless extension candidates. Maximal degree in co-relation 64557. Up to 6836 conditions per place. [2024-06-28 04:08:55,080 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 637 selfloop transitions, 91 changer transitions 0/732 dead transitions. [2024-06-28 04:08:55,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 732 transitions, 12782 flow [2024-06-28 04:08:55,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:08:55,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:08:55,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-06-28 04:08:55,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-28 04:08:55,081 INFO L175 Difference]: Start difference. First operand has 455 places, 708 transitions, 11150 flow. Second operand 9 states and 135 transitions. [2024-06-28 04:08:55,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 732 transitions, 12782 flow [2024-06-28 04:08:57,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 732 transitions, 12338 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-28 04:08:57,993 INFO L231 Difference]: Finished difference. Result has 457 places, 709 transitions, 10913 flow [2024-06-28 04:08:57,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10706, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=708, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=617, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10913, PETRI_PLACES=457, PETRI_TRANSITIONS=709} [2024-06-28 04:08:57,994 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 414 predicate places. [2024-06-28 04:08:57,994 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 709 transitions, 10913 flow [2024-06-28 04:08:57,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:57,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:57,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:57,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 04:08:57,995 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:57,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:57,995 INFO L85 PathProgramCache]: Analyzing trace with hash -2010359237, now seen corresponding path program 4 times [2024-06-28 04:08:57,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:57,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807339608] [2024-06-28 04:08:57,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:57,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:01,685 INFO 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 04:09:01,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:01,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807339608] [2024-06-28 04:09:01,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807339608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:01,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:01,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:09:01,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282980469] [2024-06-28 04:09:01,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:01,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:09:01,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:01,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:09:01,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:09:01,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:09:01,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 709 transitions, 10913 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:01,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:01,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:09:01,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:04,286 INFO L124 PetriNetUnfolderBase]: 4579/7288 cut-off events. [2024-06-28 04:09:04,287 INFO L125 PetriNetUnfolderBase]: For 764556/764595 co-relation queries the response was YES. [2024-06-28 04:09:04,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64794 conditions, 7288 events. 4579/7288 cut-off events. For 764556/764595 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 45953 event pairs, 1394 based on Foata normal form. 41/7329 useless extension candidates. Maximal degree in co-relation 64590. Up to 6964 conditions per place. [2024-06-28 04:09:04,413 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 690 selfloop transitions, 42 changer transitions 0/736 dead transitions. [2024-06-28 04:09:04,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 736 transitions, 12581 flow [2024-06-28 04:09:04,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:09:04,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:09:04,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-28 04:09:04,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-06-28 04:09:04,414 INFO L175 Difference]: Start difference. First operand has 457 places, 709 transitions, 10913 flow. Second operand 8 states and 124 transitions. [2024-06-28 04:09:04,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 736 transitions, 12581 flow [2024-06-28 04:09:07,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 736 transitions, 12390 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 04:09:07,808 INFO L231 Difference]: Finished difference. Result has 459 places, 715 transitions, 10956 flow [2024-06-28 04:09:07,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10722, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=709, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=667, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10956, PETRI_PLACES=459, PETRI_TRANSITIONS=715} [2024-06-28 04:09:07,808 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 416 predicate places. [2024-06-28 04:09:07,809 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 715 transitions, 10956 flow [2024-06-28 04:09:07,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:07,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:07,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:09:07,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 04:09:07,809 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:09:07,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:07,810 INFO L85 PathProgramCache]: Analyzing trace with hash 286795229, now seen corresponding path program 5 times [2024-06-28 04:09:07,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:07,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265074296] [2024-06-28 04:09:07,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:07,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:11,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:09:11,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:11,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265074296] [2024-06-28 04:09:11,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265074296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:11,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:11,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:09:11,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164896910] [2024-06-28 04:09:11,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:11,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:09:11,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:11,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:09:11,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:09:11,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 04:09:11,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 715 transitions, 10956 flow. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:11,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:11,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 04:09:11,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:13,850 INFO L124 PetriNetUnfolderBase]: 4589/7302 cut-off events. [2024-06-28 04:09:13,850 INFO L125 PetriNetUnfolderBase]: For 778398/778429 co-relation queries the response was YES. [2024-06-28 04:09:13,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65152 conditions, 7302 events. 4589/7302 cut-off events. For 778398/778429 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 46063 event pairs, 1396 based on Foata normal form. 33/7335 useless extension candidates. Maximal degree in co-relation 64946. Up to 6967 conditions per place. [2024-06-28 04:09:13,962 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 681 selfloop transitions, 50 changer transitions 0/735 dead transitions. [2024-06-28 04:09:13,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 735 transitions, 12590 flow [2024-06-28 04:09:13,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:09:13,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:09:13,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-06-28 04:09:13,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3601190476190476 [2024-06-28 04:09:13,964 INFO L175 Difference]: Start difference. First operand has 459 places, 715 transitions, 10956 flow. Second operand 8 states and 121 transitions. [2024-06-28 04:09:13,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 735 transitions, 12590 flow [2024-06-28 04:09:17,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 735 transitions, 12400 flow, removed 58 selfloop flow, removed 4 redundant places. [2024-06-28 04:09:17,245 INFO L231 Difference]: Finished difference. Result has 463 places, 718 transitions, 10990 flow [2024-06-28 04:09:17,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10766, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=715, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=665, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10990, PETRI_PLACES=463, PETRI_TRANSITIONS=718} [2024-06-28 04:09:17,246 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 420 predicate places. [2024-06-28 04:09:17,246 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 718 transitions, 10990 flow [2024-06-28 04:09:17,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:17,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:17,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:09:17,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 04:09:17,246 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:09:17,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:17,247 INFO L85 PathProgramCache]: Analyzing trace with hash 287210939, now seen corresponding path program 6 times [2024-06-28 04:09:17,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:17,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48497779] [2024-06-28 04:09:17,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:17,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15