./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/mutex-meet/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i ./goblint.2024-05-07_14-17-48.files/mutex-meet/thin002_pso.oepc_pso.opt_tso.oepc_tso.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 --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 10:46:48,047 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 10:46:48,154 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 10:46:48,159 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 10:46:48,160 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 10:46:48,186 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 10:46:48,186 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 10:46:48,187 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 10:46:48,187 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 10:46:48,191 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 10:46:48,191 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 10:46:48,191 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 10:46:48,192 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 10:46:48,193 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 10:46:48,193 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 10:46:48,193 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 10:46:48,193 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 10:46:48,193 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 10:46:48,194 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 10:46:48,194 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 10:46:48,194 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 10:46:48,194 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 10:46:48,194 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 10:46:48,195 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 10:46:48,195 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 10:46:48,195 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 10:46:48,195 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 10:46:48,195 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 10:46:48,196 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 10:46:48,196 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 10:46:48,197 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 10:46:48,197 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 10:46:48,197 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 10:46:48,197 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 10:46:48,198 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 10:46:48,198 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 10:46:48,198 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 10:46:48,198 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 10:46:48,198 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 10:46:48,198 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 10:46:48,199 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 10:46:48,199 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 10:46:48,199 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 10:46:48,199 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 10:46:48,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 10:46:48,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 10:46:48,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 10:46:48,458 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 10:46:48,458 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 10:46:48,459 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/mutex-meet/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml [2024-05-12 10:46:48,658 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 10:46:48,659 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 10:46:48,661 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-05-12 10:46:49,543 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 10:46:49,784 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 10:46:49,785 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-05-12 10:46:49,799 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83748c05b/d588dfccb9b14ae7bda41e05fb2b0e91/FLAGac9caebae [2024-05-12 10:46:49,809 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83748c05b/d588dfccb9b14ae7bda41e05fb2b0e91 [2024-05-12 10:46:49,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 10:46:49,810 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 10:46:49,811 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 10:46:49,811 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 10:46:49,815 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 10:46:49,816 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:46:48" (1/2) ... [2024-05-12 10:46:49,816 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@789aada and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:46:49, skipping insertion in model container [2024-05-12 10:46:49,816 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:46:48" (1/2) ... [2024-05-12 10:46:49,817 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6047dc50 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:46:49, skipping insertion in model container [2024-05-12 10:46:49,817 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 10:46:49" (2/2) ... [2024-05-12 10:46:49,818 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@789aada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:46:49, skipping insertion in model container [2024-05-12 10:46:49,818 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 10:46:49" (2/2) ... [2024-05-12 10:46:49,818 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 10:46:49,891 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 10:46:49,892 INFO L97 edCorrectnessWitness]: Location invariant before [L807-L807] ((((((((((! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )a >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (1LL - (long long )x) + (long long )y >= 0LL) && (1LL - (long long )x) + (long long )z >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p0_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p2_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p3_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )a >= 0LL) && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )z >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p2_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p3_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p2_EAX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p3_EAX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )__unbuffered_p3_EAX >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )a >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )z >= 0LL) && (long long )a + (long long )main$tmp_guard1 >= 0LL) && (long long )a + (long long )x >= 0LL) && (long long )a + (long long )y >= 0LL) && (long long )a + (long long )z >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )z >= 0LL) && (long long )x + (long long )y >= 0LL) && (long long )x + (long long )z >= 0LL) && (long long )y + (long long )z >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )x >= 0LL) && (1LL + (long long )a) - (long long )x >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((((((((((((((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p0_EAX) && 0 <= __unbuffered_p1_EAX) && 0 <= __unbuffered_p2_EAX) && 0 <= __unbuffered_p3_EAX) && 0 <= a) && 0 <= x) && 0 <= y) && 0 <= z) && __unbuffered_p0_EAX <= 1) && __unbuffered_p1_EAX <= 1) && __unbuffered_p2_EAX <= 1) && __unbuffered_p3_EAX <= 1) && a <= 1) && x <= 1) && y <= 1) && z <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1))) [2024-05-12 10:46:49,893 INFO L97 edCorrectnessWitness]: Location invariant before [L803-L803] ((((((((((! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )a >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (1LL - (long long )x) + (long long )y >= 0LL) && (1LL - (long long )x) + (long long )z >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p0_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p2_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p3_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )a >= 0LL) && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )z >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p2_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p3_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p2_EAX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p3_EAX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )__unbuffered_p3_EAX >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )a >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )z >= 0LL) && (long long )a + (long long )main$tmp_guard1 >= 0LL) && (long long )a + (long long )x >= 0LL) && (long long )a + (long long )y >= 0LL) && (long long )a + (long long )z >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )z >= 0LL) && (long long )x + (long long )y >= 0LL) && (long long )x + (long long )z >= 0LL) && (long long )y + (long long )z >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )x >= 0LL) && (1LL + (long long )a) - (long long )x >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((((((((((((((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p0_EAX) && 0 <= __unbuffered_p1_EAX) && 0 <= __unbuffered_p2_EAX) && 0 <= __unbuffered_p3_EAX) && 0 <= a) && 0 <= x) && 0 <= y) && 0 <= z) && __unbuffered_p0_EAX <= 1) && __unbuffered_p1_EAX <= 1) && __unbuffered_p2_EAX <= 1) && __unbuffered_p3_EAX <= 1) && a <= 1) && x <= 1) && y <= 1) && z <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1))) [2024-05-12 10:46:49,893 INFO L97 edCorrectnessWitness]: Location invariant before [L805-L805] ((((((((((! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )a >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (1LL - (long long )x) + (long long )y >= 0LL) && (1LL - (long long )x) + (long long )z >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p0_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p2_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p3_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )a >= 0LL) && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )z >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p2_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p3_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p2_EAX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p3_EAX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )__unbuffered_p3_EAX >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )a >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )z >= 0LL) && (long long )a + (long long )main$tmp_guard1 >= 0LL) && (long long )a + (long long )x >= 0LL) && (long long )a + (long long )y >= 0LL) && (long long )a + (long long )z >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )z >= 0LL) && (long long )x + (long long )y >= 0LL) && (long long )x + (long long )z >= 0LL) && (long long )y + (long long )z >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )x >= 0LL) && (1LL + (long long )a) - (long long )x >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((((((((((((((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p0_EAX) && 0 <= __unbuffered_p1_EAX) && 0 <= __unbuffered_p2_EAX) && 0 <= __unbuffered_p3_EAX) && 0 <= a) && 0 <= x) && 0 <= y) && 0 <= z) && __unbuffered_p0_EAX <= 1) && __unbuffered_p1_EAX <= 1) && __unbuffered_p2_EAX <= 1) && __unbuffered_p3_EAX <= 1) && a <= 1) && x <= 1) && y <= 1) && z <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1))) [2024-05-12 10:46:49,893 INFO L97 edCorrectnessWitness]: Location invariant before [L808-L808] ((((((((((! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )a >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (1LL - (long long )x) + (long long )y >= 0LL) && (1LL - (long long )x) + (long long )z >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p0_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p2_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p3_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )a >= 0LL) && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )z >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p2_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p3_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p2_EAX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p3_EAX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )__unbuffered_p3_EAX >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )a >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )z >= 0LL) && (long long )a + (long long )main$tmp_guard1 >= 0LL) && (long long )a + (long long )x >= 0LL) && (long long )a + (long long )y >= 0LL) && (long long )a + (long long )z >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )z >= 0LL) && (long long )x + (long long )y >= 0LL) && (long long )x + (long long )z >= 0LL) && (long long )y + (long long )z >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )x >= 0LL) && (1LL + (long long )a) - (long long )x >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((((((((((((((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p0_EAX) && 0 <= __unbuffered_p1_EAX) && 0 <= __unbuffered_p2_EAX) && 0 <= __unbuffered_p3_EAX) && 0 <= a) && 0 <= x) && 0 <= y) && 0 <= z) && __unbuffered_p0_EAX <= 1) && __unbuffered_p1_EAX <= 1) && __unbuffered_p2_EAX <= 1) && __unbuffered_p3_EAX <= 1) && a <= 1) && x <= 1) && y <= 1) && z <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1))) [2024-05-12 10:46:49,893 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 10:46:49,893 INFO L106 edCorrectnessWitness]: ghost_update [L801-L801] multithreaded = 1; [2024-05-12 10:46:49,928 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 10:46:50,058 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2024-05-12 10:46:50,193 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 10:46:50,201 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 10:46:50,230 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 10:46:50,357 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 10:46:50,388 INFO L206 MainTranslator]: Completed translation [2024-05-12 10:46:50,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:46:50 WrapperNode [2024-05-12 10:46:50,389 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 10:46:50,390 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 10:46:50,390 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 10:46:50,391 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 10:46:50,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:46:50" (1/1) ... [2024-05-12 10:46:50,425 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:46:50" (1/1) ... [2024-05-12 10:46:50,461 INFO L138 Inliner]: procedures = 177, calls = 66, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 91 [2024-05-12 10:46:50,461 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 10:46:50,462 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 10:46:50,462 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 10:46:50,462 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 10:46:50,470 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:46:50" (1/1) ... [2024-05-12 10:46:50,471 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:46:50" (1/1) ... [2024-05-12 10:46:50,486 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:46:50" (1/1) ... [2024-05-12 10:46:50,516 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-05-12 10:46:50,520 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:46:50" (1/1) ... [2024-05-12 10:46:50,520 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:46:50" (1/1) ... [2024-05-12 10:46:50,527 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:46:50" (1/1) ... [2024-05-12 10:46:50,535 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:46:50" (1/1) ... [2024-05-12 10:46:50,537 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:46:50" (1/1) ... [2024-05-12 10:46:50,545 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:46:50" (1/1) ... [2024-05-12 10:46:50,548 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 10:46:50,550 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 10:46:50,551 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 10:46:50,552 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 10:46:50,553 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:46:50" (1/1) ... [2024-05-12 10:46:50,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 10:46:50,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:46:50,609 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) [2024-05-12 10:46:50,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 10:46:50,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 10:46:50,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 10:46:50,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 10:46:50,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 10:46:50,627 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 [2024-05-12 10:46:50,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 10:46:50,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 10:46:50,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 10:46:50,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 10:46:50,644 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 10:46:50,644 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 10:46:50,645 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 10:46:50,645 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 10:46:50,645 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-05-12 10:46:50,646 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-05-12 10:46:50,646 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-05-12 10:46:50,646 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-05-12 10:46:50,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 10:46:50,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 10:46:50,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 10:46:50,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 10:46:50,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 10:46:50,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 10:46:50,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 10:46:50,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 10:46:50,648 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 10:46:50,771 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 10:46:50,772 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 10:46:51,217 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 10:46:51,224 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 10:46:51,363 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 10:46:51,364 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 10:46:51,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 10:46:51 BoogieIcfgContainer [2024-05-12 10:46:51,364 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 10:46:51,367 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 10:46:51,368 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 10:46:51,370 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 10:46:51,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:46:48" (1/4) ... [2024-05-12 10:46:51,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235e3aa7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 10:46:51, skipping insertion in model container [2024-05-12 10:46:51,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 10:46:49" (2/4) ... [2024-05-12 10:46:51,373 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235e3aa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 10:46:51, skipping insertion in model container [2024-05-12 10:46:51,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:46:50" (3/4) ... [2024-05-12 10:46:51,373 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235e3aa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 10:46:51, skipping insertion in model container [2024-05-12 10:46:51,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 10:46:51" (4/4) ... [2024-05-12 10:46:51,374 INFO L112 eAbstractionObserver]: Analyzing ICFG thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-05-12 10:46:51,390 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 10:46:51,390 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-05-12 10:46:51,390 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 10:46:51,463 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 10:46:51,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 57 transitions, 130 flow [2024-05-12 10:46:51,530 INFO L124 PetriNetUnfolderBase]: 1/53 cut-off events. [2024-05-12 10:46:51,530 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 10:46:51,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 53 events. 1/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 89 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2024-05-12 10:46:51,534 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 57 transitions, 130 flow [2024-05-12 10:46:51,537 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 50 transitions, 112 flow [2024-05-12 10:46:51,549 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 10:46:51,555 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;@4394e09c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 10:46:51,555 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-05-12 10:46:51,560 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 10:46:51,560 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 10:46:51,560 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 10:46:51,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:46:51,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 10:46:51,561 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:46:51,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:46:51,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1293459917, now seen corresponding path program 1 times [2024-05-12 10:46:51,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:46:51,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67021802] [2024-05-12 10:46:51,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:46:51,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:46:51,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:46:52,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:46:52,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:46:52,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67021802] [2024-05-12 10:46:52,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67021802] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:46:52,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:46:52,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 10:46:52,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078076500] [2024-05-12 10:46:52,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:46:52,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 10:46:52,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:46:52,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 10:46:52,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 10:46:52,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 57 [2024-05-12 10:46:52,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 50 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:52,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:46:52,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 57 [2024-05-12 10:46:52,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:46:53,184 INFO L124 PetriNetUnfolderBase]: 4259/6302 cut-off events. [2024-05-12 10:46:53,185 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-05-12 10:46:53,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12352 conditions, 6302 events. 4259/6302 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 37205 event pairs, 2762 based on Foata normal form. 1/6216 useless extension candidates. Maximal degree in co-relation 12336. Up to 5859 conditions per place. [2024-05-12 10:46:53,226 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 43 selfloop transitions, 5 changer transitions 0/66 dead transitions. [2024-05-12 10:46:53,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 66 transitions, 249 flow [2024-05-12 10:46:53,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 10:46:53,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 10:46:53,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-05-12 10:46:53,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7076023391812866 [2024-05-12 10:46:53,238 INFO L175 Difference]: Start difference. First operand has 63 places, 50 transitions, 112 flow. Second operand 3 states and 121 transitions. [2024-05-12 10:46:53,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 66 transitions, 249 flow [2024-05-12 10:46:53,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 66 transitions, 242 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-05-12 10:46:53,246 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 147 flow [2024-05-12 10:46:53,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=62, PETRI_TRANSITIONS=54} [2024-05-12 10:46:53,252 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -1 predicate places. [2024-05-12 10:46:53,252 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 147 flow [2024-05-12 10:46:53,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:53,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:46:53,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:46:53,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 10:46:53,254 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:46:53,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:46:53,255 INFO L85 PathProgramCache]: Analyzing trace with hash 982618392, now seen corresponding path program 1 times [2024-05-12 10:46:53,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:46:53,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987395052] [2024-05-12 10:46:53,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:46:53,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:46:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:46:53,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:46:53,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:46:53,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987395052] [2024-05-12 10:46:53,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987395052] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:46:53,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:46:53,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 10:46:53,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924705085] [2024-05-12 10:46:53,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:46:53,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 10:46:53,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:46:53,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 10:46:53,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 10:46:53,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-05-12 10:46:53,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 147 flow. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:53,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:46:53,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-05-12 10:46:53,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:46:54,694 INFO L124 PetriNetUnfolderBase]: 6869/10034 cut-off events. [2024-05-12 10:46:54,694 INFO L125 PetriNetUnfolderBase]: For 1539/1561 co-relation queries the response was YES. [2024-05-12 10:46:54,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22350 conditions, 10034 events. 6869/10034 cut-off events. For 1539/1561 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 60754 event pairs, 3338 based on Foata normal form. 10/10034 useless extension candidates. Maximal degree in co-relation 22335. Up to 9309 conditions per place. [2024-05-12 10:46:54,748 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 62 selfloop transitions, 9 changer transitions 0/87 dead transitions. [2024-05-12 10:46:54,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 87 transitions, 380 flow [2024-05-12 10:46:54,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:46:54,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:46:54,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 155 transitions. [2024-05-12 10:46:54,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6798245614035088 [2024-05-12 10:46:54,761 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 147 flow. Second operand 4 states and 155 transitions. [2024-05-12 10:46:54,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 87 transitions, 380 flow [2024-05-12 10:46:54,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 87 transitions, 372 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 10:46:54,763 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 218 flow [2024-05-12 10:46:54,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2024-05-12 10:46:54,764 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 3 predicate places. [2024-05-12 10:46:54,765 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 218 flow [2024-05-12 10:46:54,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:54,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:46:54,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:46:54,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 10:46:54,765 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:46:54,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:46:54,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1652300875, now seen corresponding path program 1 times [2024-05-12 10:46:54,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:46:54,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625419064] [2024-05-12 10:46:54,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:46:54,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:46:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:46:55,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:46:55,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:46:55,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625419064] [2024-05-12 10:46:55,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625419064] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:46:55,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:46:55,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:46:55,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627984234] [2024-05-12 10:46:55,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:46:55,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:46:55,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:46:55,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:46:55,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:46:55,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-05-12 10:46:55,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 218 flow. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:55,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:46:55,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-05-12 10:46:55,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:46:56,363 INFO L124 PetriNetUnfolderBase]: 6853/10624 cut-off events. [2024-05-12 10:46:56,363 INFO L125 PetriNetUnfolderBase]: For 4710/4793 co-relation queries the response was YES. [2024-05-12 10:46:56,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25498 conditions, 10624 events. 6853/10624 cut-off events. For 4710/4793 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 68987 event pairs, 3391 based on Foata normal form. 32/10578 useless extension candidates. Maximal degree in co-relation 25480. Up to 9235 conditions per place. [2024-05-12 10:46:56,424 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 71 selfloop transitions, 12 changer transitions 0/99 dead transitions. [2024-05-12 10:46:56,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 99 transitions, 480 flow [2024-05-12 10:46:56,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:46:56,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:46:56,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 188 transitions. [2024-05-12 10:46:56,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6596491228070176 [2024-05-12 10:46:56,426 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 218 flow. Second operand 5 states and 188 transitions. [2024-05-12 10:46:56,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 99 transitions, 480 flow [2024-05-12 10:46:56,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 99 transitions, 476 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-05-12 10:46:56,429 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 264 flow [2024-05-12 10:46:56,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=264, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2024-05-12 10:46:56,430 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 7 predicate places. [2024-05-12 10:46:56,430 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 264 flow [2024-05-12 10:46:56,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:56,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:46:56,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:46:56,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 10:46:56,431 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:46:56,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:46:56,432 INFO L85 PathProgramCache]: Analyzing trace with hash -601180441, now seen corresponding path program 1 times [2024-05-12 10:46:56,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:46:56,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253817410] [2024-05-12 10:46:56,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:46:56,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:46:56,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:46:57,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:46:57,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:46:57,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253817410] [2024-05-12 10:46:57,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253817410] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:46:57,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:46:57,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 10:46:57,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247839171] [2024-05-12 10:46:57,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:46:57,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 10:46:57,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:46:57,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 10:46:57,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 10:46:57,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-05-12 10:46:57,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 264 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:57,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:46:57,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-05-12 10:46:57,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:46:57,927 INFO L124 PetriNetUnfolderBase]: 6790/10431 cut-off events. [2024-05-12 10:46:57,927 INFO L125 PetriNetUnfolderBase]: For 8318/8328 co-relation queries the response was YES. [2024-05-12 10:46:57,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27188 conditions, 10431 events. 6790/10431 cut-off events. For 8318/8328 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 67429 event pairs, 4062 based on Foata normal form. 6/10359 useless extension candidates. Maximal degree in co-relation 27167. Up to 9204 conditions per place. [2024-05-12 10:46:57,980 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 69 selfloop transitions, 11 changer transitions 0/96 dead transitions. [2024-05-12 10:46:57,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 96 transitions, 536 flow [2024-05-12 10:46:57,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:46:57,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:46:57,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 150 transitions. [2024-05-12 10:46:57,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6578947368421053 [2024-05-12 10:46:57,982 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 264 flow. Second operand 4 states and 150 transitions. [2024-05-12 10:46:57,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 96 transitions, 536 flow [2024-05-12 10:46:57,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 96 transitions, 500 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-05-12 10:46:57,988 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 341 flow [2024-05-12 10:46:57,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=341, PETRI_PLACES=72, PETRI_TRANSITIONS=74} [2024-05-12 10:46:57,989 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 9 predicate places. [2024-05-12 10:46:57,990 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 341 flow [2024-05-12 10:46:57,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:57,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:46:57,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:46:57,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 10:46:57,991 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:46:57,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:46:57,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1908703180, now seen corresponding path program 1 times [2024-05-12 10:46:57,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:46:57,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640862682] [2024-05-12 10:46:57,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:46:57,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:46:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:46:58,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:46:58,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:46:58,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640862682] [2024-05-12 10:46:58,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640862682] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:46:58,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:46:58,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:46:58,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596542387] [2024-05-12 10:46:58,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:46:58,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:46:58,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:46:58,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:46:58,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:46:58,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-05-12 10:46:58,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 74 transitions, 341 flow. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:58,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:46:58,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-05-12 10:46:58,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:46:59,810 INFO L124 PetriNetUnfolderBase]: 8211/11971 cut-off events. [2024-05-12 10:46:59,810 INFO L125 PetriNetUnfolderBase]: For 15586/15857 co-relation queries the response was YES. [2024-05-12 10:46:59,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35247 conditions, 11971 events. 8211/11971 cut-off events. For 15586/15857 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 74021 event pairs, 3222 based on Foata normal form. 69/11966 useless extension candidates. Maximal degree in co-relation 35224. Up to 10972 conditions per place. [2024-05-12 10:46:59,891 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 76 selfloop transitions, 25 changer transitions 0/119 dead transitions. [2024-05-12 10:46:59,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 119 transitions, 709 flow [2024-05-12 10:46:59,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:46:59,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:46:59,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 192 transitions. [2024-05-12 10:46:59,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6736842105263158 [2024-05-12 10:46:59,893 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 341 flow. Second operand 5 states and 192 transitions. [2024-05-12 10:46:59,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 119 transitions, 709 flow [2024-05-12 10:46:59,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 119 transitions, 701 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-05-12 10:46:59,906 INFO L231 Difference]: Finished difference. Result has 77 places, 82 transitions, 454 flow [2024-05-12 10:46:59,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=454, PETRI_PLACES=77, PETRI_TRANSITIONS=82} [2024-05-12 10:46:59,907 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 14 predicate places. [2024-05-12 10:46:59,907 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 82 transitions, 454 flow [2024-05-12 10:46:59,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:59,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:46:59,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:46:59,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 10:46:59,908 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:46:59,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:46:59,908 INFO L85 PathProgramCache]: Analyzing trace with hash -188653108, now seen corresponding path program 2 times [2024-05-12 10:46:59,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:46:59,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074005585] [2024-05-12 10:46:59,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:46:59,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:46:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:00,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:00,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:00,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074005585] [2024-05-12 10:47:00,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074005585] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:00,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:00,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:47:00,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836181864] [2024-05-12 10:47:00,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:00,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:47:00,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:00,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:47:00,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:47:00,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-05-12 10:47:00,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 82 transitions, 454 flow. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:00,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:00,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-05-12 10:47:00,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:01,481 INFO L124 PetriNetUnfolderBase]: 8202/11959 cut-off events. [2024-05-12 10:47:01,481 INFO L125 PetriNetUnfolderBase]: For 24241/24562 co-relation queries the response was YES. [2024-05-12 10:47:01,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38537 conditions, 11959 events. 8202/11959 cut-off events. For 24241/24562 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 73944 event pairs, 3222 based on Foata normal form. 79/11966 useless extension candidates. Maximal degree in co-relation 38511. Up to 10982 conditions per place. [2024-05-12 10:47:01,545 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 68 selfloop transitions, 21 changer transitions 0/107 dead transitions. [2024-05-12 10:47:01,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 107 transitions, 694 flow [2024-05-12 10:47:01,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:47:01,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:47:01,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 155 transitions. [2024-05-12 10:47:01,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6798245614035088 [2024-05-12 10:47:01,546 INFO L175 Difference]: Start difference. First operand has 77 places, 82 transitions, 454 flow. Second operand 4 states and 155 transitions. [2024-05-12 10:47:01,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 107 transitions, 694 flow [2024-05-12 10:47:01,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 107 transitions, 651 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-05-12 10:47:01,565 INFO L231 Difference]: Finished difference. Result has 80 places, 82 transitions, 471 flow [2024-05-12 10:47:01,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=471, PETRI_PLACES=80, PETRI_TRANSITIONS=82} [2024-05-12 10:47:01,567 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 17 predicate places. [2024-05-12 10:47:01,567 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 82 transitions, 471 flow [2024-05-12 10:47:01,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:01,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:01,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:01,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 10:47:01,568 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:47:01,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:01,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1905193724, now seen corresponding path program 1 times [2024-05-12 10:47:01,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:01,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421800128] [2024-05-12 10:47:01,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:01,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:02,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:02,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:02,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421800128] [2024-05-12 10:47:02,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421800128] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:02,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:02,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:47:02,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211764319] [2024-05-12 10:47:02,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:02,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:47:02,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:02,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:47:02,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:47:02,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-05-12 10:47:02,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 82 transitions, 471 flow. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:02,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:02,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-05-12 10:47:02,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:03,116 INFO L124 PetriNetUnfolderBase]: 6813/10461 cut-off events. [2024-05-12 10:47:03,116 INFO L125 PetriNetUnfolderBase]: For 22156/22199 co-relation queries the response was YES. [2024-05-12 10:47:03,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32903 conditions, 10461 events. 6813/10461 cut-off events. For 22156/22199 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 67840 event pairs, 3766 based on Foata normal form. 19/10397 useless extension candidates. Maximal degree in co-relation 32875. Up to 9195 conditions per place. [2024-05-12 10:47:03,185 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 87 selfloop transitions, 14 changer transitions 0/117 dead transitions. [2024-05-12 10:47:03,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 117 transitions, 776 flow [2024-05-12 10:47:03,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:47:03,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:47:03,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 184 transitions. [2024-05-12 10:47:03,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6456140350877193 [2024-05-12 10:47:03,188 INFO L175 Difference]: Start difference. First operand has 80 places, 82 transitions, 471 flow. Second operand 5 states and 184 transitions. [2024-05-12 10:47:03,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 117 transitions, 776 flow [2024-05-12 10:47:03,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 117 transitions, 734 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-05-12 10:47:03,197 INFO L231 Difference]: Finished difference. Result has 82 places, 85 transitions, 495 flow [2024-05-12 10:47:03,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=495, PETRI_PLACES=82, PETRI_TRANSITIONS=85} [2024-05-12 10:47:03,198 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 19 predicate places. [2024-05-12 10:47:03,198 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 85 transitions, 495 flow [2024-05-12 10:47:03,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:03,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:03,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:03,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 10:47:03,199 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:47:03,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:03,200 INFO L85 PathProgramCache]: Analyzing trace with hash -959742978, now seen corresponding path program 1 times [2024-05-12 10:47:03,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:03,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969216674] [2024-05-12 10:47:03,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:03,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:03,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:03,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:03,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969216674] [2024-05-12 10:47:03,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969216674] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:03,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:03,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:47:03,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22578234] [2024-05-12 10:47:03,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:03,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:47:03,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:03,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:47:03,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:47:03,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 57 [2024-05-12 10:47:03,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 85 transitions, 495 flow. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:03,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:03,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 57 [2024-05-12 10:47:03,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:04,985 INFO L124 PetriNetUnfolderBase]: 8661/13194 cut-off events. [2024-05-12 10:47:04,985 INFO L125 PetriNetUnfolderBase]: For 33889/34040 co-relation queries the response was YES. [2024-05-12 10:47:05,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42934 conditions, 13194 events. 8661/13194 cut-off events. For 33889/34040 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 85632 event pairs, 4322 based on Foata normal form. 40/13120 useless extension candidates. Maximal degree in co-relation 42905. Up to 11498 conditions per place. [2024-05-12 10:47:05,085 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 108 selfloop transitions, 27 changer transitions 0/150 dead transitions. [2024-05-12 10:47:05,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 150 transitions, 1051 flow [2024-05-12 10:47:05,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:47:05,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:47:05,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 223 transitions. [2024-05-12 10:47:05,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.652046783625731 [2024-05-12 10:47:05,087 INFO L175 Difference]: Start difference. First operand has 82 places, 85 transitions, 495 flow. Second operand 6 states and 223 transitions. [2024-05-12 10:47:05,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 150 transitions, 1051 flow [2024-05-12 10:47:05,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 150 transitions, 1011 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-05-12 10:47:05,110 INFO L231 Difference]: Finished difference. Result has 87 places, 102 transitions, 683 flow [2024-05-12 10:47:05,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=683, PETRI_PLACES=87, PETRI_TRANSITIONS=102} [2024-05-12 10:47:05,110 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 24 predicate places. [2024-05-12 10:47:05,110 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 102 transitions, 683 flow [2024-05-12 10:47:05,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:05,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:05,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:05,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 10:47:05,111 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:47:05,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:05,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1553272886, now seen corresponding path program 2 times [2024-05-12 10:47:05,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:05,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763840840] [2024-05-12 10:47:05,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:05,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:05,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:05,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:05,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763840840] [2024-05-12 10:47:05,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763840840] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:05,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:05,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:47:05,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739144232] [2024-05-12 10:47:05,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:05,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:47:05,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:05,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:47:05,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:47:05,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 57 [2024-05-12 10:47:05,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 102 transitions, 683 flow. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:05,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:05,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 57 [2024-05-12 10:47:05,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:07,076 INFO L124 PetriNetUnfolderBase]: 8691/13314 cut-off events. [2024-05-12 10:47:07,076 INFO L125 PetriNetUnfolderBase]: For 44600/44932 co-relation queries the response was YES. [2024-05-12 10:47:07,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46105 conditions, 13314 events. 8691/13314 cut-off events. For 44600/44932 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 87108 event pairs, 4306 based on Foata normal form. 81/13298 useless extension candidates. Maximal degree in co-relation 46073. Up to 11567 conditions per place. [2024-05-12 10:47:07,160 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 124 selfloop transitions, 26 changer transitions 0/165 dead transitions. [2024-05-12 10:47:07,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 165 transitions, 1228 flow [2024-05-12 10:47:07,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:47:07,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:47:07,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 255 transitions. [2024-05-12 10:47:07,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6390977443609023 [2024-05-12 10:47:07,162 INFO L175 Difference]: Start difference. First operand has 87 places, 102 transitions, 683 flow. Second operand 7 states and 255 transitions. [2024-05-12 10:47:07,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 165 transitions, 1228 flow [2024-05-12 10:47:07,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 165 transitions, 1174 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-05-12 10:47:07,198 INFO L231 Difference]: Finished difference. Result has 93 places, 108 transitions, 759 flow [2024-05-12 10:47:07,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=759, PETRI_PLACES=93, PETRI_TRANSITIONS=108} [2024-05-12 10:47:07,199 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 30 predicate places. [2024-05-12 10:47:07,199 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 108 transitions, 759 flow [2024-05-12 10:47:07,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:07,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:07,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:07,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 10:47:07,200 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:47:07,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:07,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1553278466, now seen corresponding path program 3 times [2024-05-12 10:47:07,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:07,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780733368] [2024-05-12 10:47:07,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:07,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:07,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:07,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:07,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780733368] [2024-05-12 10:47:07,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780733368] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:07,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:07,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:47:07,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009823536] [2024-05-12 10:47:07,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:07,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:47:07,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:07,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:47:07,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:47:07,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 57 [2024-05-12 10:47:07,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 108 transitions, 759 flow. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:07,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:07,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 57 [2024-05-12 10:47:07,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:09,098 INFO L124 PetriNetUnfolderBase]: 8682/13170 cut-off events. [2024-05-12 10:47:09,099 INFO L125 PetriNetUnfolderBase]: For 48021/48251 co-relation queries the response was YES. [2024-05-12 10:47:09,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46140 conditions, 13170 events. 8682/13170 cut-off events. For 48021/48251 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 84973 event pairs, 4334 based on Foata normal form. 65/13131 useless extension candidates. Maximal degree in co-relation 46106. Up to 11558 conditions per place. [2024-05-12 10:47:09,202 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 103 selfloop transitions, 25 changer transitions 0/143 dead transitions. [2024-05-12 10:47:09,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 143 transitions, 1104 flow [2024-05-12 10:47:09,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:47:09,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:47:09,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 187 transitions. [2024-05-12 10:47:09,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.656140350877193 [2024-05-12 10:47:09,204 INFO L175 Difference]: Start difference. First operand has 93 places, 108 transitions, 759 flow. Second operand 5 states and 187 transitions. [2024-05-12 10:47:09,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 143 transitions, 1104 flow [2024-05-12 10:47:09,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 143 transitions, 1012 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-05-12 10:47:09,272 INFO L231 Difference]: Finished difference. Result has 94 places, 108 transitions, 728 flow [2024-05-12 10:47:09,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=728, PETRI_PLACES=94, PETRI_TRANSITIONS=108} [2024-05-12 10:47:09,273 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 31 predicate places. [2024-05-12 10:47:09,273 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 108 transitions, 728 flow [2024-05-12 10:47:09,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:09,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:09,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:09,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 10:47:09,274 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:47:09,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:09,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1965272691, now seen corresponding path program 1 times [2024-05-12 10:47:09,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:09,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710696643] [2024-05-12 10:47:09,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:09,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:09,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:09,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:09,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:09,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710696643] [2024-05-12 10:47:09,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710696643] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:09,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:09,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 10:47:09,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860268531] [2024-05-12 10:47:09,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:09,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 10:47:09,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:09,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 10:47:09,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 10:47:09,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-05-12 10:47:09,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 108 transitions, 728 flow. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:09,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:09,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-05-12 10:47:09,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:10,846 INFO L124 PetriNetUnfolderBase]: 8070/11688 cut-off events. [2024-05-12 10:47:10,846 INFO L125 PetriNetUnfolderBase]: For 50381/50426 co-relation queries the response was YES. [2024-05-12 10:47:10,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43263 conditions, 11688 events. 8070/11688 cut-off events. For 50381/50426 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 72877 event pairs, 3645 based on Foata normal form. 49/11698 useless extension candidates. Maximal degree in co-relation 43228. Up to 10760 conditions per place. [2024-05-12 10:47:10,944 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 106 selfloop transitions, 14 changer transitions 0/140 dead transitions. [2024-05-12 10:47:10,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 140 transitions, 1124 flow [2024-05-12 10:47:10,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:47:10,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:47:10,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2024-05-12 10:47:10,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6403508771929824 [2024-05-12 10:47:10,945 INFO L175 Difference]: Start difference. First operand has 94 places, 108 transitions, 728 flow. Second operand 4 states and 146 transitions. [2024-05-12 10:47:10,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 140 transitions, 1124 flow [2024-05-12 10:47:11,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 140 transitions, 1068 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-05-12 10:47:11,007 INFO L231 Difference]: Finished difference. Result has 95 places, 121 transitions, 851 flow [2024-05-12 10:47:11,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=851, PETRI_PLACES=95, PETRI_TRANSITIONS=121} [2024-05-12 10:47:11,008 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 32 predicate places. [2024-05-12 10:47:11,008 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 121 transitions, 851 flow [2024-05-12 10:47:11,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:11,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:11,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:11,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 10:47:11,009 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:47:11,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:11,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1328717301, now seen corresponding path program 1 times [2024-05-12 10:47:11,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:11,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488427161] [2024-05-12 10:47:11,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:11,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:11,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:11,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:11,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488427161] [2024-05-12 10:47:11,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488427161] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:11,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:11,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:47:11,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589766565] [2024-05-12 10:47:11,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:11,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:47:11,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:11,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:47:11,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:47:11,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-05-12 10:47:11,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 121 transitions, 851 flow. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:11,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:11,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-05-12 10:47:11,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:12,888 INFO L124 PetriNetUnfolderBase]: 9764/14074 cut-off events. [2024-05-12 10:47:12,888 INFO L125 PetriNetUnfolderBase]: For 83929/84284 co-relation queries the response was YES. [2024-05-12 10:47:12,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57778 conditions, 14074 events. 9764/14074 cut-off events. For 83929/84284 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 88166 event pairs, 2532 based on Foata normal form. 102/13822 useless extension candidates. Maximal degree in co-relation 57741. Up to 12559 conditions per place. [2024-05-12 10:47:13,012 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 100 selfloop transitions, 49 changer transitions 0/175 dead transitions. [2024-05-12 10:47:13,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 175 transitions, 1397 flow [2024-05-12 10:47:13,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:47:13,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:47:13,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 227 transitions. [2024-05-12 10:47:13,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6637426900584795 [2024-05-12 10:47:13,014 INFO L175 Difference]: Start difference. First operand has 95 places, 121 transitions, 851 flow. Second operand 6 states and 227 transitions. [2024-05-12 10:47:13,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 175 transitions, 1397 flow [2024-05-12 10:47:13,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 175 transitions, 1387 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-05-12 10:47:13,119 INFO L231 Difference]: Finished difference. Result has 101 places, 127 transitions, 1023 flow [2024-05-12 10:47:13,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1023, PETRI_PLACES=101, PETRI_TRANSITIONS=127} [2024-05-12 10:47:13,120 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 38 predicate places. [2024-05-12 10:47:13,120 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 127 transitions, 1023 flow [2024-05-12 10:47:13,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:13,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:13,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:13,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 10:47:13,121 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:47:13,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:13,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1325860341, now seen corresponding path program 2 times [2024-05-12 10:47:13,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:13,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028970855] [2024-05-12 10:47:13,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:13,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:13,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:13,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:13,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028970855] [2024-05-12 10:47:13,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028970855] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:13,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:13,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:47:13,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913538220] [2024-05-12 10:47:13,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:13,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:47:13,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:13,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:47:13,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:47:13,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-05-12 10:47:13,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 127 transitions, 1023 flow. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:13,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:13,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-05-12 10:47:13,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:15,125 INFO L124 PetriNetUnfolderBase]: 9848/14178 cut-off events. [2024-05-12 10:47:15,125 INFO L125 PetriNetUnfolderBase]: For 105668/106142 co-relation queries the response was YES. [2024-05-12 10:47:15,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61938 conditions, 14178 events. 9848/14178 cut-off events. For 105668/106142 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 88800 event pairs, 3138 based on Foata normal form. 131/13937 useless extension candidates. Maximal degree in co-relation 61898. Up to 12847 conditions per place. [2024-05-12 10:47:15,232 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 103 selfloop transitions, 45 changer transitions 0/174 dead transitions. [2024-05-12 10:47:15,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 174 transitions, 1467 flow [2024-05-12 10:47:15,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:47:15,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:47:15,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 223 transitions. [2024-05-12 10:47:15,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.652046783625731 [2024-05-12 10:47:15,234 INFO L175 Difference]: Start difference. First operand has 101 places, 127 transitions, 1023 flow. Second operand 6 states and 223 transitions. [2024-05-12 10:47:15,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 174 transitions, 1467 flow [2024-05-12 10:47:15,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 174 transitions, 1383 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-05-12 10:47:15,356 INFO L231 Difference]: Finished difference. Result has 105 places, 130 transitions, 1086 flow [2024-05-12 10:47:15,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=945, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1086, PETRI_PLACES=105, PETRI_TRANSITIONS=130} [2024-05-12 10:47:15,356 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 42 predicate places. [2024-05-12 10:47:15,357 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 130 transitions, 1086 flow [2024-05-12 10:47:15,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:15,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:15,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:15,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 10:47:15,357 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:47:15,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:15,358 INFO L85 PathProgramCache]: Analyzing trace with hash -906996533, now seen corresponding path program 3 times [2024-05-12 10:47:15,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:15,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079851572] [2024-05-12 10:47:15,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:15,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:15,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:15,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:15,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079851572] [2024-05-12 10:47:15,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079851572] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:15,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:15,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:47:15,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240585630] [2024-05-12 10:47:15,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:15,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:47:15,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:15,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:47:15,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:47:16,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-05-12 10:47:16,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 130 transitions, 1086 flow. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:16,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:16,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-05-12 10:47:16,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:17,390 INFO L124 PetriNetUnfolderBase]: 9816/14149 cut-off events. [2024-05-12 10:47:17,391 INFO L125 PetriNetUnfolderBase]: For 113345/113807 co-relation queries the response was YES. [2024-05-12 10:47:17,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62404 conditions, 14149 events. 9816/14149 cut-off events. For 113345/113807 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 88623 event pairs, 2522 based on Foata normal form. 182/13968 useless extension candidates. Maximal degree in co-relation 62362. Up to 12769 conditions per place. [2024-05-12 10:47:17,509 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 98 selfloop transitions, 41 changer transitions 0/165 dead transitions. [2024-05-12 10:47:17,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 165 transitions, 1450 flow [2024-05-12 10:47:17,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:47:17,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:47:17,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 190 transitions. [2024-05-12 10:47:17,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-05-12 10:47:17,511 INFO L175 Difference]: Start difference. First operand has 105 places, 130 transitions, 1086 flow. Second operand 5 states and 190 transitions. [2024-05-12 10:47:17,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 165 transitions, 1450 flow [2024-05-12 10:47:17,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 165 transitions, 1333 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-05-12 10:47:17,630 INFO L231 Difference]: Finished difference. Result has 106 places, 130 transitions, 1067 flow [2024-05-12 10:47:17,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1067, PETRI_PLACES=106, PETRI_TRANSITIONS=130} [2024-05-12 10:47:17,632 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 43 predicate places. [2024-05-12 10:47:17,632 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 130 transitions, 1067 flow [2024-05-12 10:47:17,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:17,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:17,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:17,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 10:47:17,632 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:47:17,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:17,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1759437215, now seen corresponding path program 1 times [2024-05-12 10:47:17,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:17,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423831371] [2024-05-12 10:47:17,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:17,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:18,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:18,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423831371] [2024-05-12 10:47:18,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423831371] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:18,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:18,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:47:18,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562431391] [2024-05-12 10:47:18,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:18,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:47:18,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:18,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:47:18,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:47:18,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 57 [2024-05-12 10:47:18,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 130 transitions, 1067 flow. Second operand has 8 states, 8 states have (on average 21.75) internal successors, (174), 8 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:18,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:18,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 57 [2024-05-12 10:47:18,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:19,866 INFO L124 PetriNetUnfolderBase]: 10797/15487 cut-off events. [2024-05-12 10:47:19,867 INFO L125 PetriNetUnfolderBase]: For 116748/117209 co-relation queries the response was YES. [2024-05-12 10:47:19,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66877 conditions, 15487 events. 10797/15487 cut-off events. For 116748/117209 co-relation queries the response was YES. Maximal size of possible extension queue 708. Compared 96736 event pairs, 2666 based on Foata normal form. 179/15585 useless extension candidates. Maximal degree in co-relation 66834. Up to 13604 conditions per place. [2024-05-12 10:47:20,003 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 147 selfloop transitions, 43 changer transitions 0/207 dead transitions. [2024-05-12 10:47:20,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 207 transitions, 1825 flow [2024-05-12 10:47:20,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:47:20,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:47:20,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 261 transitions. [2024-05-12 10:47:20,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6541353383458647 [2024-05-12 10:47:20,006 INFO L175 Difference]: Start difference. First operand has 106 places, 130 transitions, 1067 flow. Second operand 7 states and 261 transitions. [2024-05-12 10:47:20,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 207 transitions, 1825 flow [2024-05-12 10:47:20,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 207 transitions, 1718 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-05-12 10:47:20,150 INFO L231 Difference]: Finished difference. Result has 111 places, 141 transitions, 1207 flow [2024-05-12 10:47:20,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=974, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1207, PETRI_PLACES=111, PETRI_TRANSITIONS=141} [2024-05-12 10:47:20,152 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 48 predicate places. [2024-05-12 10:47:20,152 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 141 transitions, 1207 flow [2024-05-12 10:47:20,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.75) internal successors, (174), 8 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:20,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:20,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:20,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-05-12 10:47:20,153 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:47:20,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:20,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1848002975, now seen corresponding path program 2 times [2024-05-12 10:47:20,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:20,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618016406] [2024-05-12 10:47:20,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:20,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:20,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:20,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:20,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:20,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618016406] [2024-05-12 10:47:20,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618016406] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:20,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:20,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:47:20,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845393552] [2024-05-12 10:47:20,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:20,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:47:20,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:20,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:47:20,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:47:20,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 57 [2024-05-12 10:47:20,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 141 transitions, 1207 flow. Second operand has 8 states, 8 states have (on average 21.75) internal successors, (174), 8 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:20,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:20,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 57 [2024-05-12 10:47:20,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:22,510 INFO L124 PetriNetUnfolderBase]: 11161/16043 cut-off events. [2024-05-12 10:47:22,511 INFO L125 PetriNetUnfolderBase]: For 138669/139198 co-relation queries the response was YES. [2024-05-12 10:47:22,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72248 conditions, 16043 events. 11161/16043 cut-off events. For 138669/139198 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 100569 event pairs, 3338 based on Foata normal form. 199/16161 useless extension candidates. Maximal degree in co-relation 72202. Up to 14418 conditions per place. [2024-05-12 10:47:22,652 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 153 selfloop transitions, 39 changer transitions 0/209 dead transitions. [2024-05-12 10:47:22,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 209 transitions, 1911 flow [2024-05-12 10:47:22,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:47:22,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:47:22,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 261 transitions. [2024-05-12 10:47:22,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6541353383458647 [2024-05-12 10:47:22,654 INFO L175 Difference]: Start difference. First operand has 111 places, 141 transitions, 1207 flow. Second operand 7 states and 261 transitions. [2024-05-12 10:47:22,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 209 transitions, 1911 flow [2024-05-12 10:47:22,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 209 transitions, 1852 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-05-12 10:47:22,829 INFO L231 Difference]: Finished difference. Result has 117 places, 146 transitions, 1313 flow [2024-05-12 10:47:22,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1148, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1313, PETRI_PLACES=117, PETRI_TRANSITIONS=146} [2024-05-12 10:47:22,829 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 54 predicate places. [2024-05-12 10:47:22,830 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 146 transitions, 1313 flow [2024-05-12 10:47:22,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.75) internal successors, (174), 8 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:22,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:22,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:22,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-05-12 10:47:22,830 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:47:22,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:22,831 INFO L85 PathProgramCache]: Analyzing trace with hash 951813617, now seen corresponding path program 3 times [2024-05-12 10:47:22,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:22,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26199423] [2024-05-12 10:47:22,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:22,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:23,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:23,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:23,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26199423] [2024-05-12 10:47:23,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26199423] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:23,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:23,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:47:23,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931166917] [2024-05-12 10:47:23,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:23,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:47:23,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:23,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:47:23,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:47:23,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 57 [2024-05-12 10:47:23,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 146 transitions, 1313 flow. Second operand has 8 states, 8 states have (on average 21.75) internal successors, (174), 8 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:23,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:23,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 57 [2024-05-12 10:47:23,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:25,040 INFO L124 PetriNetUnfolderBase]: 11107/15965 cut-off events. [2024-05-12 10:47:25,041 INFO L125 PetriNetUnfolderBase]: For 148675/149212 co-relation queries the response was YES. [2024-05-12 10:47:25,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72927 conditions, 15965 events. 11107/15965 cut-off events. For 148675/149212 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 100091 event pairs, 3351 based on Foata normal form. 205/16089 useless extension candidates. Maximal degree in co-relation 72878. Up to 14576 conditions per place. [2024-05-12 10:47:25,188 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 151 selfloop transitions, 36 changer transitions 0/204 dead transitions. [2024-05-12 10:47:25,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 204 transitions, 1850 flow [2024-05-12 10:47:25,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:47:25,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:47:25,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 255 transitions. [2024-05-12 10:47:25,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6390977443609023 [2024-05-12 10:47:25,190 INFO L175 Difference]: Start difference. First operand has 117 places, 146 transitions, 1313 flow. Second operand 7 states and 255 transitions. [2024-05-12 10:47:25,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 204 transitions, 1850 flow [2024-05-12 10:47:25,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 204 transitions, 1781 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-05-12 10:47:25,421 INFO L231 Difference]: Finished difference. Result has 121 places, 147 transitions, 1340 flow [2024-05-12 10:47:25,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1246, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1340, PETRI_PLACES=121, PETRI_TRANSITIONS=147} [2024-05-12 10:47:25,422 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 58 predicate places. [2024-05-12 10:47:25,422 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 147 transitions, 1340 flow [2024-05-12 10:47:25,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.75) internal successors, (174), 8 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:25,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:25,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:25,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-05-12 10:47:25,423 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:47:25,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:25,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1953389385, now seen corresponding path program 4 times [2024-05-12 10:47:25,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:25,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441971840] [2024-05-12 10:47:25,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:25,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:26,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:26,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:26,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441971840] [2024-05-12 10:47:26,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441971840] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:26,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:26,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:47:26,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317134318] [2024-05-12 10:47:26,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:26,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:47:26,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:26,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:47:26,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:47:26,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 57 [2024-05-12 10:47:26,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 147 transitions, 1340 flow. Second operand has 8 states, 8 states have (on average 21.75) internal successors, (174), 8 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:26,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:26,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 57 [2024-05-12 10:47:26,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:27,845 INFO L124 PetriNetUnfolderBase]: 11050/15908 cut-off events. [2024-05-12 10:47:27,845 INFO L125 PetriNetUnfolderBase]: For 155994/156601 co-relation queries the response was YES. [2024-05-12 10:47:27,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73047 conditions, 15908 events. 11050/15908 cut-off events. For 155994/156601 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 99842 event pairs, 3317 based on Foata normal form. 230/16075 useless extension candidates. Maximal degree in co-relation 72996. Up to 14572 conditions per place. [2024-05-12 10:47:28,007 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 168 selfloop transitions, 31 changer transitions 0/216 dead transitions. [2024-05-12 10:47:28,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 216 transitions, 1947 flow [2024-05-12 10:47:28,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:47:28,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:47:28,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 287 transitions. [2024-05-12 10:47:28,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6293859649122807 [2024-05-12 10:47:28,009 INFO L175 Difference]: Start difference. First operand has 121 places, 147 transitions, 1340 flow. Second operand 8 states and 287 transitions. [2024-05-12 10:47:28,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 216 transitions, 1947 flow [2024-05-12 10:47:28,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 216 transitions, 1875 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-05-12 10:47:28,196 INFO L231 Difference]: Finished difference. Result has 124 places, 149 transitions, 1378 flow [2024-05-12 10:47:28,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1268, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1378, PETRI_PLACES=124, PETRI_TRANSITIONS=149} [2024-05-12 10:47:28,196 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 61 predicate places. [2024-05-12 10:47:28,196 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 149 transitions, 1378 flow [2024-05-12 10:47:28,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.75) internal successors, (174), 8 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:28,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:28,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:28,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-05-12 10:47:28,197 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:47:28,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:28,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1948027005, now seen corresponding path program 5 times [2024-05-12 10:47:28,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:28,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830973436] [2024-05-12 10:47:28,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:28,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:28,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:28,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:28,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830973436] [2024-05-12 10:47:28,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830973436] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:28,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:28,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:47:28,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777093367] [2024-05-12 10:47:28,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:28,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:47:28,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:28,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:47:28,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:47:28,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 57 [2024-05-12 10:47:28,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 149 transitions, 1378 flow. Second operand has 8 states, 8 states have (on average 21.75) internal successors, (174), 8 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:28,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:28,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 57 [2024-05-12 10:47:28,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:30,525 INFO L124 PetriNetUnfolderBase]: 11376/16740 cut-off events. [2024-05-12 10:47:30,525 INFO L125 PetriNetUnfolderBase]: For 174951/175302 co-relation queries the response was YES. [2024-05-12 10:47:30,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76739 conditions, 16740 events. 11376/16740 cut-off events. For 174951/175302 co-relation queries the response was YES. Maximal size of possible extension queue 761. Compared 108986 event pairs, 4631 based on Foata normal form. 131/16764 useless extension candidates. Maximal degree in co-relation 76687. Up to 15009 conditions per place. [2024-05-12 10:47:30,691 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 153 selfloop transitions, 29 changer transitions 0/199 dead transitions. [2024-05-12 10:47:30,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 199 transitions, 1909 flow [2024-05-12 10:47:30,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:47:30,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:47:30,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 222 transitions. [2024-05-12 10:47:30,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6491228070175439 [2024-05-12 10:47:30,693 INFO L175 Difference]: Start difference. First operand has 124 places, 149 transitions, 1378 flow. Second operand 6 states and 222 transitions. [2024-05-12 10:47:30,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 199 transitions, 1909 flow [2024-05-12 10:47:30,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 199 transitions, 1837 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-05-12 10:47:30,848 INFO L231 Difference]: Finished difference. Result has 124 places, 151 transitions, 1416 flow [2024-05-12 10:47:30,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1416, PETRI_PLACES=124, PETRI_TRANSITIONS=151} [2024-05-12 10:47:30,848 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 61 predicate places. [2024-05-12 10:47:30,848 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 151 transitions, 1416 flow [2024-05-12 10:47:30,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.75) internal successors, (174), 8 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:30,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:30,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:30,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-05-12 10:47:30,849 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:47:30,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:30,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1947879135, now seen corresponding path program 6 times [2024-05-12 10:47:30,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:30,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302944080] [2024-05-12 10:47:30,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:30,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:31,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:31,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:31,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302944080] [2024-05-12 10:47:31,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302944080] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:31,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:31,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:47:31,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607821169] [2024-05-12 10:47:31,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:31,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:47:31,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:31,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:47:31,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:47:31,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 57 [2024-05-12 10:47:31,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 151 transitions, 1416 flow. Second operand has 8 states, 8 states have (on average 21.75) internal successors, (174), 8 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:31,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:31,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 57 [2024-05-12 10:47:31,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:33,233 INFO L124 PetriNetUnfolderBase]: 11337/16629 cut-off events. [2024-05-12 10:47:33,234 INFO L125 PetriNetUnfolderBase]: For 180827/181228 co-relation queries the response was YES. [2024-05-12 10:47:33,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76443 conditions, 16629 events. 11337/16629 cut-off events. For 180827/181228 co-relation queries the response was YES. Maximal size of possible extension queue 759. Compared 107535 event pairs, 3916 based on Foata normal form. 187/16705 useless extension candidates. Maximal degree in co-relation 76390. Up to 14476 conditions per place. [2024-05-12 10:47:33,370 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 150 selfloop transitions, 37 changer transitions 0/204 dead transitions. [2024-05-12 10:47:33,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 204 transitions, 1949 flow [2024-05-12 10:47:33,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:47:33,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:47:33,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 225 transitions. [2024-05-12 10:47:33,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6578947368421053 [2024-05-12 10:47:33,373 INFO L175 Difference]: Start difference. First operand has 124 places, 151 transitions, 1416 flow. Second operand 6 states and 225 transitions. [2024-05-12 10:47:33,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 204 transitions, 1949 flow [2024-05-12 10:47:33,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 204 transitions, 1867 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-05-12 10:47:33,590 INFO L231 Difference]: Finished difference. Result has 127 places, 153 transitions, 1454 flow [2024-05-12 10:47:33,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1336, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1454, PETRI_PLACES=127, PETRI_TRANSITIONS=153} [2024-05-12 10:47:33,590 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 64 predicate places. [2024-05-12 10:47:33,591 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 153 transitions, 1454 flow [2024-05-12 10:47:33,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.75) internal successors, (174), 8 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:33,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:33,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:33,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-05-12 10:47:33,591 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:47:33,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:33,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1953604587, now seen corresponding path program 1 times [2024-05-12 10:47:33,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:33,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113897913] [2024-05-12 10:47:33,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:33,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:34,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:34,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:34,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113897913] [2024-05-12 10:47:34,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113897913] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:34,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:34,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:47:34,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715258661] [2024-05-12 10:47:34,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:34,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:47:34,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:34,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:47:34,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:47:34,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 57 [2024-05-12 10:47:34,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 153 transitions, 1454 flow. Second operand has 8 states, 8 states have (on average 21.75) internal successors, (174), 8 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:34,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:34,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 57 [2024-05-12 10:47:34,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:35,912 INFO L124 PetriNetUnfolderBase]: 11087/16323 cut-off events. [2024-05-12 10:47:35,912 INFO L125 PetriNetUnfolderBase]: For 186632/186999 co-relation queries the response was YES. [2024-05-12 10:47:36,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75170 conditions, 16323 events. 11087/16323 cut-off events. For 186632/186999 co-relation queries the response was YES. Maximal size of possible extension queue 737. Compared 105896 event pairs, 4260 based on Foata normal form. 174/16402 useless extension candidates. Maximal degree in co-relation 75115. Up to 14195 conditions per place. [2024-05-12 10:47:36,345 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 170 selfloop transitions, 38 changer transitions 0/225 dead transitions. [2024-05-12 10:47:36,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 225 transitions, 2047 flow [2024-05-12 10:47:36,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:47:36,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:47:36,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 289 transitions. [2024-05-12 10:47:36,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6337719298245614 [2024-05-12 10:47:36,346 INFO L175 Difference]: Start difference. First operand has 127 places, 153 transitions, 1454 flow. Second operand 8 states and 289 transitions. [2024-05-12 10:47:36,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 225 transitions, 2047 flow [2024-05-12 10:47:36,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 225 transitions, 1912 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-05-12 10:47:36,524 INFO L231 Difference]: Finished difference. Result has 129 places, 154 transitions, 1394 flow [2024-05-12 10:47:36,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1279, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1394, PETRI_PLACES=129, PETRI_TRANSITIONS=154} [2024-05-12 10:47:36,525 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 66 predicate places. [2024-05-12 10:47:36,525 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 154 transitions, 1394 flow [2024-05-12 10:47:36,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.75) internal successors, (174), 8 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:36,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:36,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:36,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-05-12 10:47:36,526 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:47:36,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:36,526 INFO L85 PathProgramCache]: Analyzing trace with hash 614940210, now seen corresponding path program 1 times [2024-05-12 10:47:36,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:36,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791126722] [2024-05-12 10:47:36,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:36,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:37,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:37,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:37,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791126722] [2024-05-12 10:47:37,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791126722] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:37,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:37,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:47:37,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378707911] [2024-05-12 10:47:37,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:37,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:47:37,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:37,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:47:37,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:47:37,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-05-12 10:47:37,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 154 transitions, 1394 flow. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:37,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:37,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-05-12 10:47:37,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:38,475 INFO L124 PetriNetUnfolderBase]: 9016/13069 cut-off events. [2024-05-12 10:47:38,475 INFO L125 PetriNetUnfolderBase]: For 162118/162553 co-relation queries the response was YES. [2024-05-12 10:47:38,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63395 conditions, 13069 events. 9016/13069 cut-off events. For 162118/162553 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 81555 event pairs, 2905 based on Foata normal form. 60/13094 useless extension candidates. Maximal degree in co-relation 63340. Up to 12186 conditions per place. [2024-05-12 10:47:38,590 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 140 selfloop transitions, 33 changer transitions 0/191 dead transitions. [2024-05-12 10:47:38,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 191 transitions, 1994 flow [2024-05-12 10:47:38,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:47:38,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:47:38,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 183 transitions. [2024-05-12 10:47:38,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6421052631578947 [2024-05-12 10:47:38,592 INFO L175 Difference]: Start difference. First operand has 129 places, 154 transitions, 1394 flow. Second operand 5 states and 183 transitions. [2024-05-12 10:47:38,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 191 transitions, 1994 flow [2024-05-12 10:47:38,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 191 transitions, 1905 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-05-12 10:47:38,747 INFO L231 Difference]: Finished difference. Result has 128 places, 162 transitions, 1488 flow [2024-05-12 10:47:38,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1305, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1488, PETRI_PLACES=128, PETRI_TRANSITIONS=162} [2024-05-12 10:47:38,747 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 65 predicate places. [2024-05-12 10:47:38,747 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 162 transitions, 1488 flow [2024-05-12 10:47:38,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:38,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:38,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:38,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-05-12 10:47:38,748 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:47:38,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:38,748 INFO L85 PathProgramCache]: Analyzing trace with hash 656604210, now seen corresponding path program 2 times [2024-05-12 10:47:38,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:38,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636390544] [2024-05-12 10:47:38,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:38,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:38,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:39,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:39,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:39,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636390544] [2024-05-12 10:47:39,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636390544] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:39,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:39,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:47:39,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497792711] [2024-05-12 10:47:39,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:39,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:47:39,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:39,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:47:39,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:47:39,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-05-12 10:47:39,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 162 transitions, 1488 flow. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:39,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:39,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-05-12 10:47:39,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:40,897 INFO L124 PetriNetUnfolderBase]: 9009/13060 cut-off events. [2024-05-12 10:47:40,897 INFO L125 PetriNetUnfolderBase]: For 181307/181778 co-relation queries the response was YES. [2024-05-12 10:47:40,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65629 conditions, 13060 events. 9009/13060 cut-off events. For 181307/181778 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 81758 event pairs, 2905 based on Foata normal form. 64/13090 useless extension candidates. Maximal degree in co-relation 65573. Up to 12192 conditions per place. [2024-05-12 10:47:41,057 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 136 selfloop transitions, 29 changer transitions 0/183 dead transitions. [2024-05-12 10:47:41,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 183 transitions, 1870 flow [2024-05-12 10:47:41,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:47:41,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:47:41,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 150 transitions. [2024-05-12 10:47:41,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6578947368421053 [2024-05-12 10:47:41,059 INFO L175 Difference]: Start difference. First operand has 128 places, 162 transitions, 1488 flow. Second operand 4 states and 150 transitions. [2024-05-12 10:47:41,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 183 transitions, 1870 flow [2024-05-12 10:47:41,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 183 transitions, 1777 flow, removed 36 selfloop flow, removed 1 redundant places. [2024-05-12 10:47:41,320 INFO L231 Difference]: Finished difference. Result has 131 places, 162 transitions, 1469 flow [2024-05-12 10:47:41,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1395, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1469, PETRI_PLACES=131, PETRI_TRANSITIONS=162} [2024-05-12 10:47:41,321 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 68 predicate places. [2024-05-12 10:47:41,321 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 162 transitions, 1469 flow [2024-05-12 10:47:41,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:41,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:41,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:41,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-05-12 10:47:41,322 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:47:41,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:41,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1867239894, now seen corresponding path program 1 times [2024-05-12 10:47:41,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:41,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480813639] [2024-05-12 10:47:41,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:41,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:41,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:41,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:41,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:41,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480813639] [2024-05-12 10:47:41,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480813639] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:41,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:41,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:47:41,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309053618] [2024-05-12 10:47:41,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:41,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:47:41,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:41,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:47:41,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:47:41,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-05-12 10:47:41,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 162 transitions, 1469 flow. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:41,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:41,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-05-12 10:47:41,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:43,505 INFO L124 PetriNetUnfolderBase]: 9530/14214 cut-off events. [2024-05-12 10:47:43,506 INFO L125 PetriNetUnfolderBase]: For 182848/182980 co-relation queries the response was YES. [2024-05-12 10:47:43,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65938 conditions, 14214 events. 9530/14214 cut-off events. For 182848/182980 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 93931 event pairs, 4564 based on Foata normal form. 139/14247 useless extension candidates. Maximal degree in co-relation 65880. Up to 12775 conditions per place. [2024-05-12 10:47:43,631 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 153 selfloop transitions, 17 changer transitions 0/191 dead transitions. [2024-05-12 10:47:43,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 191 transitions, 1901 flow [2024-05-12 10:47:43,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:47:43,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:47:43,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 176 transitions. [2024-05-12 10:47:43,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6175438596491228 [2024-05-12 10:47:43,633 INFO L175 Difference]: Start difference. First operand has 131 places, 162 transitions, 1469 flow. Second operand 5 states and 176 transitions. [2024-05-12 10:47:43,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 191 transitions, 1901 flow [2024-05-12 10:47:43,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 191 transitions, 1843 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-05-12 10:47:43,805 INFO L231 Difference]: Finished difference. Result has 133 places, 165 transitions, 1485 flow [2024-05-12 10:47:43,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1411, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1485, PETRI_PLACES=133, PETRI_TRANSITIONS=165} [2024-05-12 10:47:43,806 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 70 predicate places. [2024-05-12 10:47:43,806 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 165 transitions, 1485 flow [2024-05-12 10:47:43,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:43,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:43,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:43,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-05-12 10:47:43,807 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:47:43,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:43,807 INFO L85 PathProgramCache]: Analyzing trace with hash -857342920, now seen corresponding path program 1 times [2024-05-12 10:47:43,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:43,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004170992] [2024-05-12 10:47:43,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:43,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:44,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:44,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:44,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004170992] [2024-05-12 10:47:44,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004170992] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:44,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:44,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:47:44,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143108096] [2024-05-12 10:47:44,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:44,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:47:44,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:44,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:47:44,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:47:44,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 57 [2024-05-12 10:47:44,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 165 transitions, 1485 flow. Second operand has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:44,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:44,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 57 [2024-05-12 10:47:44,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:46,287 INFO L124 PetriNetUnfolderBase]: 12199/17803 cut-off events. [2024-05-12 10:47:46,287 INFO L125 PetriNetUnfolderBase]: For 236232/236250 co-relation queries the response was YES. [2024-05-12 10:47:46,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83647 conditions, 17803 events. 12199/17803 cut-off events. For 236232/236250 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 114866 event pairs, 5355 based on Foata normal form. 10/17715 useless extension candidates. Maximal degree in co-relation 83588. Up to 16339 conditions per place. [2024-05-12 10:47:46,471 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 189 selfloop transitions, 26 changer transitions 0/229 dead transitions. [2024-05-12 10:47:46,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 229 transitions, 2313 flow [2024-05-12 10:47:46,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:47:46,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:47:46,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 209 transitions. [2024-05-12 10:47:46,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-05-12 10:47:46,472 INFO L175 Difference]: Start difference. First operand has 133 places, 165 transitions, 1485 flow. Second operand 6 states and 209 transitions. [2024-05-12 10:47:46,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 229 transitions, 2313 flow [2024-05-12 10:47:46,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 229 transitions, 2256 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-05-12 10:47:46,837 INFO L231 Difference]: Finished difference. Result has 139 places, 188 transitions, 1738 flow [2024-05-12 10:47:46,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1435, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1738, PETRI_PLACES=139, PETRI_TRANSITIONS=188} [2024-05-12 10:47:46,838 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 76 predicate places. [2024-05-12 10:47:46,838 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 188 transitions, 1738 flow [2024-05-12 10:47:46,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:46,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:46,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:46,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-05-12 10:47:46,839 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:47:46,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:46,839 INFO L85 PathProgramCache]: Analyzing trace with hash -2133723662, now seen corresponding path program 2 times [2024-05-12 10:47:46,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:46,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493087784] [2024-05-12 10:47:46,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:46,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:47,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:47,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:47,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493087784] [2024-05-12 10:47:47,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493087784] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:47,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:47,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:47:47,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68701148] [2024-05-12 10:47:47,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:47,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:47:47,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:47,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:47:47,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:47:47,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 57 [2024-05-12 10:47:47,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 188 transitions, 1738 flow. Second operand has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:47,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:47,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 57 [2024-05-12 10:47:47,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:49,275 INFO L124 PetriNetUnfolderBase]: 12223/17611 cut-off events. [2024-05-12 10:47:49,275 INFO L125 PetriNetUnfolderBase]: For 256582/256588 co-relation queries the response was YES. [2024-05-12 10:47:49,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86916 conditions, 17611 events. 12223/17611 cut-off events. For 256582/256588 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 111870 event pairs, 5360 based on Foata normal form. 6/17558 useless extension candidates. Maximal degree in co-relation 86853. Up to 16364 conditions per place. [2024-05-12 10:47:49,459 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 179 selfloop transitions, 30 changer transitions 0/223 dead transitions. [2024-05-12 10:47:49,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 223 transitions, 2384 flow [2024-05-12 10:47:49,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:47:49,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:47:49,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 174 transitions. [2024-05-12 10:47:49,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6105263157894737 [2024-05-12 10:47:49,460 INFO L175 Difference]: Start difference. First operand has 139 places, 188 transitions, 1738 flow. Second operand 5 states and 174 transitions. [2024-05-12 10:47:49,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 223 transitions, 2384 flow [2024-05-12 10:47:49,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 223 transitions, 2352 flow, removed 16 selfloop flow, removed 0 redundant places. [2024-05-12 10:47:49,907 INFO L231 Difference]: Finished difference. Result has 145 places, 194 transitions, 1847 flow [2024-05-12 10:47:49,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1710, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1847, PETRI_PLACES=145, PETRI_TRANSITIONS=194} [2024-05-12 10:47:49,907 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 82 predicate places. [2024-05-12 10:47:49,907 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 194 transitions, 1847 flow [2024-05-12 10:47:49,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:49,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:49,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:49,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-05-12 10:47:49,908 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:47:49,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:49,908 INFO L85 PathProgramCache]: Analyzing trace with hash -2133734822, now seen corresponding path program 3 times [2024-05-12 10:47:49,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:49,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953352542] [2024-05-12 10:47:49,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:49,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:50,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:50,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:50,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953352542] [2024-05-12 10:47:50,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953352542] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:50,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:50,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:47:50,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620526561] [2024-05-12 10:47:50,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:50,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:47:50,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:50,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:47:50,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:47:50,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 57 [2024-05-12 10:47:50,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 194 transitions, 1847 flow. Second operand has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:50,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:50,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 57 [2024-05-12 10:47:50,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:52,514 INFO L124 PetriNetUnfolderBase]: 12216/17832 cut-off events. [2024-05-12 10:47:52,514 INFO L125 PetriNetUnfolderBase]: For 272096/272126 co-relation queries the response was YES. [2024-05-12 10:47:52,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87994 conditions, 17832 events. 12216/17832 cut-off events. For 272096/272126 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 115300 event pairs, 5355 based on Foata normal form. 18/17752 useless extension candidates. Maximal degree in co-relation 87927. Up to 16357 conditions per place. [2024-05-12 10:47:52,738 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 181 selfloop transitions, 31 changer transitions 0/226 dead transitions. [2024-05-12 10:47:52,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 226 transitions, 2353 flow [2024-05-12 10:47:52,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:47:52,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:47:52,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 178 transitions. [2024-05-12 10:47:52,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.624561403508772 [2024-05-12 10:47:52,739 INFO L175 Difference]: Start difference. First operand has 145 places, 194 transitions, 1847 flow. Second operand 5 states and 178 transitions. [2024-05-12 10:47:52,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 226 transitions, 2353 flow [2024-05-12 10:47:53,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 226 transitions, 2293 flow, removed 17 selfloop flow, removed 1 redundant places. [2024-05-12 10:47:53,244 INFO L231 Difference]: Finished difference. Result has 149 places, 194 transitions, 1863 flow [2024-05-12 10:47:53,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1787, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1863, PETRI_PLACES=149, PETRI_TRANSITIONS=194} [2024-05-12 10:47:53,245 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 86 predicate places. [2024-05-12 10:47:53,245 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 194 transitions, 1863 flow [2024-05-12 10:47:53,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:53,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:53,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:53,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-05-12 10:47:53,246 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:47:53,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:53,246 INFO L85 PathProgramCache]: Analyzing trace with hash 350027902, now seen corresponding path program 1 times [2024-05-12 10:47:53,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:53,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987990189] [2024-05-12 10:47:53,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:53,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:53,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:53,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:53,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987990189] [2024-05-12 10:47:53,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987990189] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:53,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:53,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:47:53,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062855844] [2024-05-12 10:47:53,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:53,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:47:53,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:53,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:47:53,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:47:53,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 57 [2024-05-12 10:47:53,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 194 transitions, 1863 flow. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:53,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:53,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 57 [2024-05-12 10:47:53,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:55,627 INFO L124 PetriNetUnfolderBase]: 10034/14365 cut-off events. [2024-05-12 10:47:55,628 INFO L125 PetriNetUnfolderBase]: For 242978/242987 co-relation queries the response was YES. [2024-05-12 10:47:55,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74496 conditions, 14365 events. 10034/14365 cut-off events. For 242978/242987 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 88394 event pairs, 3445 based on Foata normal form. 6/14356 useless extension candidates. Maximal degree in co-relation 74427. Up to 13480 conditions per place. [2024-05-12 10:47:55,799 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 200 selfloop transitions, 33 changer transitions 0/248 dead transitions. [2024-05-12 10:47:55,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 248 transitions, 2674 flow [2024-05-12 10:47:55,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:47:55,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:47:55,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 211 transitions. [2024-05-12 10:47:55,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6169590643274854 [2024-05-12 10:47:55,800 INFO L175 Difference]: Start difference. First operand has 149 places, 194 transitions, 1863 flow. Second operand 6 states and 211 transitions. [2024-05-12 10:47:55,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 248 transitions, 2674 flow [2024-05-12 10:47:56,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 248 transitions, 2626 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-05-12 10:47:56,062 INFO L231 Difference]: Finished difference. Result has 154 places, 211 transitions, 2077 flow [2024-05-12 10:47:56,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1819, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2077, PETRI_PLACES=154, PETRI_TRANSITIONS=211} [2024-05-12 10:47:56,062 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 91 predicate places. [2024-05-12 10:47:56,063 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 211 transitions, 2077 flow [2024-05-12 10:47:56,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:56,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:56,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:56,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-05-12 10:47:56,063 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:47:56,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:56,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1120098358, now seen corresponding path program 2 times [2024-05-12 10:47:56,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:56,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731457394] [2024-05-12 10:47:56,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:56,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:56,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:56,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:56,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:56,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731457394] [2024-05-12 10:47:56,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731457394] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:56,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:56,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:47:56,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172178161] [2024-05-12 10:47:56,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:56,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:47:56,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:56,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:47:56,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:47:56,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 57 [2024-05-12 10:47:56,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 211 transitions, 2077 flow. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:56,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:56,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 57 [2024-05-12 10:47:56,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:58,626 INFO L124 PetriNetUnfolderBase]: 10058/14622 cut-off events. [2024-05-12 10:47:58,627 INFO L125 PetriNetUnfolderBase]: For 252195/252207 co-relation queries the response was YES. [2024-05-12 10:47:58,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77498 conditions, 14622 events. 10058/14622 cut-off events. For 252195/252207 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 92011 event pairs, 4601 based on Foata normal form. 10/14549 useless extension candidates. Maximal degree in co-relation 77427. Up to 13531 conditions per place. [2024-05-12 10:47:58,799 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 211 selfloop transitions, 33 changer transitions 0/259 dead transitions. [2024-05-12 10:47:58,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 259 transitions, 2841 flow [2024-05-12 10:47:58,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:47:58,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:47:58,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 240 transitions. [2024-05-12 10:47:58,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6015037593984962 [2024-05-12 10:47:58,801 INFO L175 Difference]: Start difference. First operand has 154 places, 211 transitions, 2077 flow. Second operand 7 states and 240 transitions. [2024-05-12 10:47:58,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 259 transitions, 2841 flow [2024-05-12 10:47:59,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 259 transitions, 2757 flow, removed 26 selfloop flow, removed 2 redundant places. [2024-05-12 10:47:59,168 INFO L231 Difference]: Finished difference. Result has 160 places, 217 transitions, 2143 flow [2024-05-12 10:47:59,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=2003, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2143, PETRI_PLACES=160, PETRI_TRANSITIONS=217} [2024-05-12 10:47:59,170 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 97 predicate places. [2024-05-12 10:47:59,170 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 217 transitions, 2143 flow [2024-05-12 10:47:59,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:59,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:59,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:59,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-05-12 10:47:59,171 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:47:59,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:59,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1120103938, now seen corresponding path program 3 times [2024-05-12 10:47:59,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:59,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110693970] [2024-05-12 10:47:59,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:59,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:59,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:59,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:59,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110693970] [2024-05-12 10:47:59,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110693970] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:59,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:59,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:47:59,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253617871] [2024-05-12 10:47:59,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:59,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:47:59,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:59,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:47:59,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:47:59,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 57 [2024-05-12 10:47:59,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 217 transitions, 2143 flow. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:59,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:59,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 57 [2024-05-12 10:47:59,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:48:01,510 INFO L124 PetriNetUnfolderBase]: 10051/14394 cut-off events. [2024-05-12 10:48:01,510 INFO L125 PetriNetUnfolderBase]: For 261921/261933 co-relation queries the response was YES. [2024-05-12 10:48:01,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77118 conditions, 14394 events. 10051/14394 cut-off events. For 261921/261933 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 88448 event pairs, 3445 based on Foata normal form. 8/14387 useless extension candidates. Maximal degree in co-relation 77045. Up to 13524 conditions per place. [2024-05-12 10:48:01,684 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 199 selfloop transitions, 31 changer transitions 0/245 dead transitions. [2024-05-12 10:48:01,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 245 transitions, 2675 flow [2024-05-12 10:48:01,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:48:01,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:48:01,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 179 transitions. [2024-05-12 10:48:01,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6280701754385964 [2024-05-12 10:48:01,685 INFO L175 Difference]: Start difference. First operand has 160 places, 217 transitions, 2143 flow. Second operand 5 states and 179 transitions. [2024-05-12 10:48:01,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 245 transitions, 2675 flow [2024-05-12 10:48:02,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 245 transitions, 2565 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-05-12 10:48:02,076 INFO L231 Difference]: Finished difference. Result has 161 places, 217 transitions, 2104 flow [2024-05-12 10:48:02,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=2033, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2104, PETRI_PLACES=161, PETRI_TRANSITIONS=217} [2024-05-12 10:48:02,076 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 98 predicate places. [2024-05-12 10:48:02,076 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 217 transitions, 2104 flow [2024-05-12 10:48:02,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:02,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:48:02,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:48:02,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-05-12 10:48:02,077 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:48:02,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:48:02,077 INFO L85 PathProgramCache]: Analyzing trace with hash -551781228, now seen corresponding path program 1 times [2024-05-12 10:48:02,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:48:02,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220381662] [2024-05-12 10:48:02,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:02,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:48:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:48:02,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:48:02,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:48:02,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220381662] [2024-05-12 10:48:02,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220381662] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:48:02,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:48:02,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 10:48:02,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721759163] [2024-05-12 10:48:02,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:48:02,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 10:48:02,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:48:02,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 10:48:02,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 10:48:02,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-05-12 10:48:02,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 217 transitions, 2104 flow. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:02,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:48:02,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-05-12 10:48:02,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:48:04,613 INFO L124 PetriNetUnfolderBase]: 11250/16339 cut-off events. [2024-05-12 10:48:04,613 INFO L125 PetriNetUnfolderBase]: For 353292/353583 co-relation queries the response was YES. [2024-05-12 10:48:04,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88113 conditions, 16339 events. 11250/16339 cut-off events. For 353292/353583 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 105082 event pairs, 4863 based on Foata normal form. 95/16087 useless extension candidates. Maximal degree in co-relation 88039. Up to 14595 conditions per place. [2024-05-12 10:48:04,801 INFO L140 encePairwiseOnDemand]: 50/57 looper letters, 184 selfloop transitions, 18 changer transitions 0/251 dead transitions. [2024-05-12 10:48:04,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 251 transitions, 2762 flow [2024-05-12 10:48:04,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:48:04,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:48:04,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-05-12 10:48:04,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.618421052631579 [2024-05-12 10:48:04,803 INFO L175 Difference]: Start difference. First operand has 161 places, 217 transitions, 2104 flow. Second operand 4 states and 141 transitions. [2024-05-12 10:48:04,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 251 transitions, 2762 flow [2024-05-12 10:48:05,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 251 transitions, 2692 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-05-12 10:48:05,313 INFO L231 Difference]: Finished difference. Result has 162 places, 234 transitions, 2327 flow [2024-05-12 10:48:05,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=2042, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2327, PETRI_PLACES=162, PETRI_TRANSITIONS=234} [2024-05-12 10:48:05,313 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 99 predicate places. [2024-05-12 10:48:05,313 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 234 transitions, 2327 flow [2024-05-12 10:48:05,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:05,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:48:05,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:48:05,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-05-12 10:48:05,314 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:48:05,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:48:05,314 INFO L85 PathProgramCache]: Analyzing trace with hash -2036896783, now seen corresponding path program 1 times [2024-05-12 10:48:05,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:48:05,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365752636] [2024-05-12 10:48:05,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:05,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:48:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:48:05,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:48:05,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:48:05,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365752636] [2024-05-12 10:48:05,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365752636] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:48:05,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:48:05,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:48:05,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667008592] [2024-05-12 10:48:05,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:48:05,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:48:05,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:48:05,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:48:05,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:48:06,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-05-12 10:48:06,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 234 transitions, 2327 flow. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:06,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:48:06,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-05-12 10:48:06,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:48:08,114 INFO L124 PetriNetUnfolderBase]: 10926/15932 cut-off events. [2024-05-12 10:48:08,114 INFO L125 PetriNetUnfolderBase]: For 387478/388495 co-relation queries the response was YES. [2024-05-12 10:48:08,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93135 conditions, 15932 events. 10926/15932 cut-off events. For 387478/388495 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 102555 event pairs, 2877 based on Foata normal form. 125/15395 useless extension candidates. Maximal degree in co-relation 93059. Up to 14202 conditions per place. [2024-05-12 10:48:08,303 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 186 selfloop transitions, 61 changer transitions 0/280 dead transitions. [2024-05-12 10:48:08,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 280 transitions, 3147 flow [2024-05-12 10:48:08,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:48:08,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:48:08,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 218 transitions. [2024-05-12 10:48:08,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6374269005847953 [2024-05-12 10:48:08,305 INFO L175 Difference]: Start difference. First operand has 162 places, 234 transitions, 2327 flow. Second operand 6 states and 218 transitions. [2024-05-12 10:48:08,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 280 transitions, 3147 flow [2024-05-12 10:48:08,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 280 transitions, 3127 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-05-12 10:48:08,794 INFO L231 Difference]: Finished difference. Result has 168 places, 240 transitions, 2555 flow [2024-05-12 10:48:08,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=2307, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2555, PETRI_PLACES=168, PETRI_TRANSITIONS=240} [2024-05-12 10:48:08,794 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 105 predicate places. [2024-05-12 10:48:08,795 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 240 transitions, 2555 flow [2024-05-12 10:48:08,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:08,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:48:08,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:48:08,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-05-12 10:48:08,795 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:48:08,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:48:08,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1637062423, now seen corresponding path program 2 times [2024-05-12 10:48:08,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:48:08,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105695009] [2024-05-12 10:48:08,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:08,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:48:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:48:09,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:48:09,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:48:09,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105695009] [2024-05-12 10:48:09,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105695009] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:48:09,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:48:09,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:48:09,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853531757] [2024-05-12 10:48:09,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:48:09,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:48:09,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:48:09,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:48:09,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:48:09,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-05-12 10:48:09,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 240 transitions, 2555 flow. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:09,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:48:09,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-05-12 10:48:09,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:48:11,899 INFO L124 PetriNetUnfolderBase]: 11021/16063 cut-off events. [2024-05-12 10:48:11,899 INFO L125 PetriNetUnfolderBase]: For 425658/426889 co-relation queries the response was YES. [2024-05-12 10:48:11,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97006 conditions, 16063 events. 11021/16063 cut-off events. For 425658/426889 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 103664 event pairs, 3127 based on Foata normal form. 96/15495 useless extension candidates. Maximal degree in co-relation 96927. Up to 14519 conditions per place. [2024-05-12 10:48:12,075 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 187 selfloop transitions, 57 changer transitions 0/277 dead transitions. [2024-05-12 10:48:12,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 277 transitions, 3187 flow [2024-05-12 10:48:12,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:48:12,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:48:12,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 212 transitions. [2024-05-12 10:48:12,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6198830409356725 [2024-05-12 10:48:12,077 INFO L175 Difference]: Start difference. First operand has 168 places, 240 transitions, 2555 flow. Second operand 6 states and 212 transitions. [2024-05-12 10:48:12,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 277 transitions, 3187 flow [2024-05-12 10:48:12,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 277 transitions, 3045 flow, removed 41 selfloop flow, removed 2 redundant places. [2024-05-12 10:48:12,679 INFO L231 Difference]: Finished difference. Result has 172 places, 243 transitions, 2604 flow [2024-05-12 10:48:12,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=2431, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2604, PETRI_PLACES=172, PETRI_TRANSITIONS=243} [2024-05-12 10:48:12,680 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 109 predicate places. [2024-05-12 10:48:12,680 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 243 transitions, 2604 flow [2024-05-12 10:48:12,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:12,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:48:12,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:48:12,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-05-12 10:48:12,681 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:48:12,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:48:12,681 INFO L85 PathProgramCache]: Analyzing trace with hash -363486607, now seen corresponding path program 3 times [2024-05-12 10:48:12,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:48:12,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559051298] [2024-05-12 10:48:12,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:12,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:48:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:48:13,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:48:13,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:48:13,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559051298] [2024-05-12 10:48:13,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559051298] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:48:13,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:48:13,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:48:13,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153901327] [2024-05-12 10:48:13,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:48:13,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:48:13,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:48:13,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:48:13,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:48:13,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-05-12 10:48:13,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 243 transitions, 2604 flow. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:13,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:48:13,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-05-12 10:48:13,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:48:15,467 INFO L124 PetriNetUnfolderBase]: 11000/16038 cut-off events. [2024-05-12 10:48:15,467 INFO L125 PetriNetUnfolderBase]: For 438379/439530 co-relation queries the response was YES. [2024-05-12 10:48:15,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96730 conditions, 16038 events. 11000/16038 cut-off events. For 438379/439530 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 103362 event pairs, 2867 based on Foata normal form. 148/15526 useless extension candidates. Maximal degree in co-relation 96649. Up to 14424 conditions per place. [2024-05-12 10:48:15,692 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 188 selfloop transitions, 53 changer transitions 0/274 dead transitions. [2024-05-12 10:48:15,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 274 transitions, 3162 flow [2024-05-12 10:48:15,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:48:15,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:48:15,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 185 transitions. [2024-05-12 10:48:15,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6491228070175439 [2024-05-12 10:48:15,693 INFO L175 Difference]: Start difference. First operand has 172 places, 243 transitions, 2604 flow. Second operand 5 states and 185 transitions. [2024-05-12 10:48:15,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 274 transitions, 3162 flow [2024-05-12 10:48:16,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 274 transitions, 3001 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-05-12 10:48:16,741 INFO L231 Difference]: Finished difference. Result has 173 places, 243 transitions, 2563 flow [2024-05-12 10:48:16,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=2443, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2563, PETRI_PLACES=173, PETRI_TRANSITIONS=243} [2024-05-12 10:48:16,742 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 110 predicate places. [2024-05-12 10:48:16,742 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 243 transitions, 2563 flow [2024-05-12 10:48:16,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:16,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:48:16,742 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] [2024-05-12 10:48:16,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-05-12 10:48:16,742 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:48:16,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:48:16,743 INFO L85 PathProgramCache]: Analyzing trace with hash 461205145, now seen corresponding path program 1 times [2024-05-12 10:48:16,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:48:16,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520448920] [2024-05-12 10:48:16,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:16,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:48:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:48:17,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:48:17,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:48:17,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520448920] [2024-05-12 10:48:17,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520448920] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:48:17,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:48:17,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:48:17,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772642943] [2024-05-12 10:48:17,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:48:17,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:48:17,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:48:17,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:48:17,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:48:17,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 57 [2024-05-12 10:48:17,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 243 transitions, 2563 flow. Second operand has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:17,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:48:17,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 57 [2024-05-12 10:48:17,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:48:19,905 INFO L124 PetriNetUnfolderBase]: 12803/18437 cut-off events. [2024-05-12 10:48:19,906 INFO L125 PetriNetUnfolderBase]: For 415875/415902 co-relation queries the response was YES. [2024-05-12 10:48:20,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101408 conditions, 18437 events. 12803/18437 cut-off events. For 415875/415902 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 116649 event pairs, 4512 based on Foata normal form. 28/18361 useless extension candidates. Maximal degree in co-relation 101326. Up to 16725 conditions per place. [2024-05-12 10:48:20,147 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 259 selfloop transitions, 39 changer transitions 0/312 dead transitions. [2024-05-12 10:48:20,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 312 transitions, 3553 flow [2024-05-12 10:48:20,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:48:20,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:48:20,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 246 transitions. [2024-05-12 10:48:20,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6165413533834586 [2024-05-12 10:48:20,149 INFO L175 Difference]: Start difference. First operand has 173 places, 243 transitions, 2563 flow. Second operand 7 states and 246 transitions. [2024-05-12 10:48:20,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 312 transitions, 3553 flow [2024-05-12 10:48:20,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 312 transitions, 3436 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-05-12 10:48:20,771 INFO L231 Difference]: Finished difference. Result has 178 places, 253 transitions, 2653 flow [2024-05-12 10:48:20,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=2446, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2653, PETRI_PLACES=178, PETRI_TRANSITIONS=253} [2024-05-12 10:48:20,771 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 115 predicate places. [2024-05-12 10:48:20,772 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 253 transitions, 2653 flow [2024-05-12 10:48:20,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:20,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:48:20,772 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] [2024-05-12 10:48:20,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-05-12 10:48:20,772 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:48:20,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:48:20,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1484068569, now seen corresponding path program 2 times [2024-05-12 10:48:20,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:48:20,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934269189] [2024-05-12 10:48:20,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:20,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:48:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:48:21,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:48:21,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:48:21,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934269189] [2024-05-12 10:48:21,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934269189] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:48:21,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:48:21,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:48:21,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569881783] [2024-05-12 10:48:21,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:48:21,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:48:21,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:48:21,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:48:21,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:48:21,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 57 [2024-05-12 10:48:21,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 253 transitions, 2653 flow. Second operand has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:21,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:48:21,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 57 [2024-05-12 10:48:21,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:48:24,711 INFO L124 PetriNetUnfolderBase]: 12953/18475 cut-off events. [2024-05-12 10:48:24,711 INFO L125 PetriNetUnfolderBase]: For 440993/441020 co-relation queries the response was YES. [2024-05-12 10:48:24,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104298 conditions, 18475 events. 12953/18475 cut-off events. For 440993/441020 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 115405 event pairs, 3826 based on Foata normal form. 32/18482 useless extension candidates. Maximal degree in co-relation 104213. Up to 17224 conditions per place. [2024-05-12 10:48:24,934 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 257 selfloop transitions, 33 changer transitions 0/304 dead transitions. [2024-05-12 10:48:24,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 304 transitions, 3394 flow [2024-05-12 10:48:24,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:48:24,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:48:24,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 238 transitions. [2024-05-12 10:48:24,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5964912280701754 [2024-05-12 10:48:24,984 INFO L175 Difference]: Start difference. First operand has 178 places, 253 transitions, 2653 flow. Second operand 7 states and 238 transitions. [2024-05-12 10:48:24,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 304 transitions, 3394 flow [2024-05-12 10:48:25,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 304 transitions, 3344 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-05-12 10:48:25,806 INFO L231 Difference]: Finished difference. Result has 183 places, 255 transitions, 2703 flow [2024-05-12 10:48:25,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=2605, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2703, PETRI_PLACES=183, PETRI_TRANSITIONS=255} [2024-05-12 10:48:25,807 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 120 predicate places. [2024-05-12 10:48:25,807 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 255 transitions, 2703 flow [2024-05-12 10:48:25,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:25,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:48:25,807 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] [2024-05-12 10:48:25,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-05-12 10:48:25,808 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:48:25,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:48:25,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1483742139, now seen corresponding path program 3 times [2024-05-12 10:48:25,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:48:25,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703737575] [2024-05-12 10:48:25,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:25,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:48:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:48:26,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:48:26,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:48:26,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703737575] [2024-05-12 10:48:26,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703737575] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:48:26,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:48:26,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:48:26,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737120900] [2024-05-12 10:48:26,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:48:26,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:48:26,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:48:26,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:48:26,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:48:26,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 57 [2024-05-12 10:48:26,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 255 transitions, 2703 flow. Second operand has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:26,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:48:26,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 57 [2024-05-12 10:48:26,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:48:29,763 INFO L124 PetriNetUnfolderBase]: 13103/18681 cut-off events. [2024-05-12 10:48:29,763 INFO L125 PetriNetUnfolderBase]: For 460497/460524 co-relation queries the response was YES. [2024-05-12 10:48:29,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106185 conditions, 18681 events. 13103/18681 cut-off events. For 460497/460524 co-relation queries the response was YES. Maximal size of possible extension queue 807. Compared 116607 event pairs, 3819 based on Foata normal form. 28/18684 useless extension candidates. Maximal degree in co-relation 106098. Up to 17305 conditions per place. [2024-05-12 10:48:30,014 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 261 selfloop transitions, 37 changer transitions 0/312 dead transitions. [2024-05-12 10:48:30,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 312 transitions, 3509 flow [2024-05-12 10:48:30,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:48:30,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:48:30,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 241 transitions. [2024-05-12 10:48:30,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6040100250626567 [2024-05-12 10:48:30,024 INFO L175 Difference]: Start difference. First operand has 183 places, 255 transitions, 2703 flow. Second operand 7 states and 241 transitions. [2024-05-12 10:48:30,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 312 transitions, 3509 flow [2024-05-12 10:48:31,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 312 transitions, 3443 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-05-12 10:48:31,143 INFO L231 Difference]: Finished difference. Result has 186 places, 260 transitions, 2793 flow [2024-05-12 10:48:31,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=2637, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2793, PETRI_PLACES=186, PETRI_TRANSITIONS=260} [2024-05-12 10:48:31,144 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 123 predicate places. [2024-05-12 10:48:31,144 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 260 transitions, 2793 flow [2024-05-12 10:48:31,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:31,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:48:31,144 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] [2024-05-12 10:48:31,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-05-12 10:48:31,145 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:48:31,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:48:31,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1306582719, now seen corresponding path program 1 times [2024-05-12 10:48:31,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:48:31,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30855916] [2024-05-12 10:48:31,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:31,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:48:31,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:48:31,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:48:31,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:48:31,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30855916] [2024-05-12 10:48:31,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30855916] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:48:31,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:48:31,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:48:31,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471473808] [2024-05-12 10:48:31,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:48:31,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:48:31,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:48:31,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:48:31,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:48:32,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 57 [2024-05-12 10:48:32,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 260 transitions, 2793 flow. Second operand has 8 states, 8 states have (on average 22.125) internal successors, (177), 8 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:32,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:48:32,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 57 [2024-05-12 10:48:32,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:48:34,792 INFO L124 PetriNetUnfolderBase]: 12255/17741 cut-off events. [2024-05-12 10:48:34,792 INFO L125 PetriNetUnfolderBase]: For 536473/537806 co-relation queries the response was YES. [2024-05-12 10:48:34,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107386 conditions, 17741 events. 12255/17741 cut-off events. For 536473/537806 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 113998 event pairs, 3299 based on Foata normal form. 227/17226 useless extension candidates. Maximal degree in co-relation 107297. Up to 15585 conditions per place. [2024-05-12 10:48:35,000 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 196 selfloop transitions, 93 changer transitions 0/325 dead transitions. [2024-05-12 10:48:35,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 325 transitions, 3977 flow [2024-05-12 10:48:35,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:48:35,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:48:35,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 256 transitions. [2024-05-12 10:48:35,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6416040100250626 [2024-05-12 10:48:35,001 INFO L175 Difference]: Start difference. First operand has 186 places, 260 transitions, 2793 flow. Second operand 7 states and 256 transitions. [2024-05-12 10:48:35,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 325 transitions, 3977 flow [2024-05-12 10:48:36,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 325 transitions, 3929 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-05-12 10:48:36,302 INFO L231 Difference]: Finished difference. Result has 190 places, 272 transitions, 3140 flow [2024-05-12 10:48:36,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=2745, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3140, PETRI_PLACES=190, PETRI_TRANSITIONS=272} [2024-05-12 10:48:36,302 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 127 predicate places. [2024-05-12 10:48:36,302 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 272 transitions, 3140 flow [2024-05-12 10:48:36,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.125) internal successors, (177), 8 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:36,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:48:36,303 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] [2024-05-12 10:48:36,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-05-12 10:48:36,303 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:48:36,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:48:36,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1306702875, now seen corresponding path program 1 times [2024-05-12 10:48:36,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:48:36,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751922685] [2024-05-12 10:48:36,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:36,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:48:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:48:37,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:48:37,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:48:37,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751922685] [2024-05-12 10:48:37,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751922685] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:48:37,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:48:37,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:48:37,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591982486] [2024-05-12 10:48:37,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:48:37,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:48:37,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:48:37,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:48:37,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:48:37,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 57 [2024-05-12 10:48:37,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 272 transitions, 3140 flow. Second operand has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:37,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:48:37,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 57 [2024-05-12 10:48:37,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:48:40,191 INFO L124 PetriNetUnfolderBase]: 13271/19027 cut-off events. [2024-05-12 10:48:40,192 INFO L125 PetriNetUnfolderBase]: For 517610/517654 co-relation queries the response was YES. [2024-05-12 10:48:40,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112434 conditions, 19027 events. 13271/19027 cut-off events. For 517610/517654 co-relation queries the response was YES. Maximal size of possible extension queue 817. Compared 120352 event pairs, 3850 based on Foata normal form. 30/19012 useless extension candidates. Maximal degree in co-relation 112343. Up to 17474 conditions per place. [2024-05-12 10:48:40,408 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 275 selfloop transitions, 63 changer transitions 0/352 dead transitions. [2024-05-12 10:48:40,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 352 transitions, 4542 flow [2024-05-12 10:48:40,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:48:40,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:48:40,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 247 transitions. [2024-05-12 10:48:40,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-05-12 10:48:40,409 INFO L175 Difference]: Start difference. First operand has 190 places, 272 transitions, 3140 flow. Second operand 7 states and 247 transitions. [2024-05-12 10:48:40,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 352 transitions, 4542 flow [2024-05-12 10:48:41,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 352 transitions, 4396 flow, removed 41 selfloop flow, removed 2 redundant places. [2024-05-12 10:48:41,634 INFO L231 Difference]: Finished difference. Result has 198 places, 297 transitions, 3486 flow [2024-05-12 10:48:41,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=3002, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3486, PETRI_PLACES=198, PETRI_TRANSITIONS=297} [2024-05-12 10:48:41,634 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 135 predicate places. [2024-05-12 10:48:41,635 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 297 transitions, 3486 flow [2024-05-12 10:48:41,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:41,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:48:41,635 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] [2024-05-12 10:48:41,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-05-12 10:48:41,635 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:48:41,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:48:41,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1306702689, now seen corresponding path program 2 times [2024-05-12 10:48:41,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:48:41,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552576675] [2024-05-12 10:48:41,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:41,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:48:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:48:42,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:48:42,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:48:42,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552576675] [2024-05-12 10:48:42,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552576675] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:48:42,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:48:42,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:48:42,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376319588] [2024-05-12 10:48:42,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:48:42,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:48:42,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:48:42,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:48:42,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:48:42,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 57 [2024-05-12 10:48:42,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 297 transitions, 3486 flow. Second operand has 8 states, 8 states have (on average 22.125) internal successors, (177), 8 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:42,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:48:42,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 57 [2024-05-12 10:48:42,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:48:45,468 INFO L124 PetriNetUnfolderBase]: 12380/17926 cut-off events. [2024-05-12 10:48:45,468 INFO L125 PetriNetUnfolderBase]: For 617204/619382 co-relation queries the response was YES. [2024-05-12 10:48:45,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115807 conditions, 17926 events. 12380/17926 cut-off events. For 617204/619382 co-relation queries the response was YES. Maximal size of possible extension queue 789. Compared 115386 event pairs, 3241 based on Foata normal form. 134/17402 useless extension candidates. Maximal degree in co-relation 115711. Up to 16033 conditions per place. [2024-05-12 10:48:46,019 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 227 selfloop transitions, 83 changer transitions 0/350 dead transitions. [2024-05-12 10:48:46,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 350 transitions, 4309 flow [2024-05-12 10:48:46,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:48:46,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:48:46,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 246 transitions. [2024-05-12 10:48:46,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6165413533834586 [2024-05-12 10:48:46,020 INFO L175 Difference]: Start difference. First operand has 198 places, 297 transitions, 3486 flow. Second operand 7 states and 246 transitions. [2024-05-12 10:48:46,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 350 transitions, 4309 flow [2024-05-12 10:48:47,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 350 transitions, 4227 flow, removed 32 selfloop flow, removed 1 redundant places. [2024-05-12 10:48:47,366 INFO L231 Difference]: Finished difference. Result has 204 places, 305 transitions, 3681 flow [2024-05-12 10:48:47,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=3404, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3681, PETRI_PLACES=204, PETRI_TRANSITIONS=305} [2024-05-12 10:48:47,367 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 141 predicate places. [2024-05-12 10:48:47,367 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 305 transitions, 3681 flow [2024-05-12 10:48:47,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.125) internal successors, (177), 8 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:47,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:48:47,368 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] [2024-05-12 10:48:47,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-05-12 10:48:47,368 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:48:47,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:48:47,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1483834395, now seen corresponding path program 2 times [2024-05-12 10:48:47,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:48:47,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569649700] [2024-05-12 10:48:47,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:47,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:48:47,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:48:48,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:48:48,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:48:48,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569649700] [2024-05-12 10:48:48,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569649700] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:48:48,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:48:48,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:48:48,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945368420] [2024-05-12 10:48:48,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:48:48,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:48:48,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:48:48,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:48:48,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:48:48,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 57 [2024-05-12 10:48:48,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 305 transitions, 3681 flow. Second operand has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:48,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:48:48,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 57 [2024-05-12 10:48:48,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:48:51,333 INFO L124 PetriNetUnfolderBase]: 13459/19764 cut-off events. [2024-05-12 10:48:51,334 INFO L125 PetriNetUnfolderBase]: For 581538/581586 co-relation queries the response was YES. [2024-05-12 10:48:51,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119394 conditions, 19764 events. 13459/19764 cut-off events. For 581538/581586 co-relation queries the response was YES. Maximal size of possible extension queue 851. Compared 130161 event pairs, 5300 based on Foata normal form. 33/19635 useless extension candidates. Maximal degree in co-relation 119296. Up to 17668 conditions per place. [2024-05-12 10:48:51,920 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 286 selfloop transitions, 77 changer transitions 0/377 dead transitions. [2024-05-12 10:48:51,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 377 transitions, 5253 flow [2024-05-12 10:48:51,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:48:51,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:48:51,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 247 transitions. [2024-05-12 10:48:51,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-05-12 10:48:51,921 INFO L175 Difference]: Start difference. First operand has 204 places, 305 transitions, 3681 flow. Second operand 7 states and 247 transitions. [2024-05-12 10:48:51,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 377 transitions, 5253 flow [2024-05-12 10:48:53,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 377 transitions, 5037 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-05-12 10:48:53,666 INFO L231 Difference]: Finished difference. Result has 209 places, 323 transitions, 3903 flow [2024-05-12 10:48:53,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=3485, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3903, PETRI_PLACES=209, PETRI_TRANSITIONS=323} [2024-05-12 10:48:53,667 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 146 predicate places. [2024-05-12 10:48:53,667 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 323 transitions, 3903 flow [2024-05-12 10:48:53,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:53,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:48:53,668 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] [2024-05-12 10:48:53,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-05-12 10:48:53,668 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 10:48:53,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:48:53,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1311344319, now seen corresponding path program 3 times [2024-05-12 10:48:53,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:48:53,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051250531] [2024-05-12 10:48:53,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:53,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:48:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:48:54,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:48:54,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:48:54,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051250531] [2024-05-12 10:48:54,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051250531] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:48:54,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:48:54,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:48:54,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751115437] [2024-05-12 10:48:54,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:48:54,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:48:54,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:48:54,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:48:54,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:48:54,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 57 [2024-05-12 10:48:54,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 323 transitions, 3903 flow. Second operand has 8 states, 8 states have (on average 22.125) internal successors, (177), 8 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:54,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:48:54,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 57 [2024-05-12 10:48:54,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand