./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe029_power.opt_pso.opt_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe029_power.opt_pso.opt_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 00:37:22,713 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 00:37:22,779 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 00:37:22,785 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 00:37:22,786 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 00:37:22,809 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 00:37:22,810 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 00:37:22,810 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 00:37:22,811 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 00:37:22,814 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 00:37:22,814 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 00:37:22,815 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 00:37:22,816 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 00:37:22,816 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 00:37:22,816 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 00:37:22,816 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 00:37:22,817 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 00:37:22,817 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 00:37:22,817 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 00:37:22,817 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 00:37:22,817 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 00:37:22,832 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 00:37:22,832 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 00:37:22,832 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 00:37:22,832 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 00:37:22,832 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 00:37:22,833 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 00:37:22,833 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 00:37:22,833 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 00:37:22,833 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 00:37:22,833 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 00:37:22,833 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 00:37:22,834 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:37:22,834 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 00:37:22,834 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 00:37:22,834 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 00:37:22,834 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 00:37:22,834 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 00:37:22,834 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 00:37:22,834 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 00:37:22,835 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 00:37:22,835 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 00:37:22,835 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 00:37:22,835 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 00:37:23,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 00:37:23,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 00:37:23,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 00:37:23,071 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 00:37:23,071 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 00:37:23,072 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i [2024-06-28 00:37:24,034 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 00:37:24,276 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 00:37:24,277 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i [2024-06-28 00:37:24,295 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9377600a9/2cf7029c9ac84bdaa82196adab587f6b/FLAG54a251375 [2024-06-28 00:37:24,309 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9377600a9/2cf7029c9ac84bdaa82196adab587f6b [2024-06-28 00:37:24,311 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 00:37:24,312 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 00:37:24,314 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe029_power.opt_pso.opt_rmo.opt.yml/witness.yml [2024-06-28 00:37:24,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 00:37:24,378 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 00:37:24,379 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 00:37:24,379 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 00:37:24,383 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 00:37:24,384 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:37:24" (1/2) ... [2024-06-28 00:37:24,385 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67f8143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:37:24, skipping insertion in model container [2024-06-28 00:37:24,385 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:37:24" (1/2) ... [2024-06-28 00:37:24,386 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7af14113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:37:24, skipping insertion in model container [2024-06-28 00:37:24,387 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:37:24" (2/2) ... [2024-06-28 00:37:24,388 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67f8143 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:37:24, skipping insertion in model container [2024-06-28 00:37:24,389 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:37:24" (2/2) ... [2024-06-28 00:37:24,389 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 00:37:24,410 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 00:37:24,411 INFO L97 edCorrectnessWitness]: Location invariant before [L794-L794] ! multithreaded || ((((((((((((((0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-28 00:37:24,412 INFO L97 edCorrectnessWitness]: Location invariant before [L793-L793] ! multithreaded || ((((((((((((((0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-28 00:37:24,412 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 00:37:24,412 INFO L106 edCorrectnessWitness]: ghost_update [L791-L791] multithreaded = 1; [2024-06-28 00:37:24,457 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 00:37:24,777 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:37:24,784 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 00:37:24,895 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:37:24,931 INFO L206 MainTranslator]: Completed translation [2024-06-28 00:37:24,932 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:37:24 WrapperNode [2024-06-28 00:37:24,932 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 00:37:24,933 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 00:37:24,934 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 00:37:24,934 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 00:37:24,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:37:24" (1/1) ... [2024-06-28 00:37:24,962 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:37:24" (1/1) ... [2024-06-28 00:37:24,995 INFO L138 Inliner]: procedures = 174, calls = 34, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 130 [2024-06-28 00:37:24,998 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 00:37:24,999 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 00:37:24,999 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 00:37:24,999 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 00:37:25,008 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:37:24" (1/1) ... [2024-06-28 00:37:25,009 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:37:24" (1/1) ... [2024-06-28 00:37:25,023 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:37:24" (1/1) ... [2024-06-28 00:37:25,040 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 00:37:25,044 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:37:24" (1/1) ... [2024-06-28 00:37:25,044 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:37:24" (1/1) ... [2024-06-28 00:37:25,051 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:37:24" (1/1) ... [2024-06-28 00:37:25,057 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:37:24" (1/1) ... [2024-06-28 00:37:25,060 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:37:24" (1/1) ... [2024-06-28 00:37:25,064 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:37:24" (1/1) ... [2024-06-28 00:37:25,068 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 00:37:25,070 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 00:37:25,070 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 00:37:25,070 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 00:37:25,071 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:37:24" (1/1) ... [2024-06-28 00:37:25,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:37:25,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:37:25,107 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 00:37:25,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 00:37:25,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 00:37:25,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 00:37:25,158 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 00:37:25,159 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 00:37:25,159 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 00:37:25,159 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 00:37:25,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 00:37:25,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 00:37:25,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 00:37:25,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 00:37:25,161 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 00:37:25,261 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 00:37:25,264 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 00:37:25,583 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 00:37:25,584 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 00:37:25,675 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 00:37:25,676 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 00:37:25,676 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:37:25 BoogieIcfgContainer [2024-06-28 00:37:25,676 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 00:37:25,678 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 00:37:25,679 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 00:37:25,681 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 00:37:25,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 12:37:24" (1/4) ... [2024-06-28 00:37:25,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a90acc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:37:25, skipping insertion in model container [2024-06-28 00:37:25,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:37:24" (2/4) ... [2024-06-28 00:37:25,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a90acc5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:37:25, skipping insertion in model container [2024-06-28 00:37:25,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:37:24" (3/4) ... [2024-06-28 00:37:25,685 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a90acc5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:37:25, skipping insertion in model container [2024-06-28 00:37:25,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:37:25" (4/4) ... [2024-06-28 00:37:25,686 INFO L112 eAbstractionObserver]: Analyzing ICFG safe029_power.opt_pso.opt_rmo.opt.i [2024-06-28 00:37:25,715 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 00:37:25,716 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 00:37:25,716 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 00:37:25,776 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 00:37:25,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 29 transitions, 66 flow [2024-06-28 00:37:25,831 INFO L124 PetriNetUnfolderBase]: 0/27 cut-off events. [2024-06-28 00:37:25,836 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:37:25,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 0/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 00:37:25,840 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 29 transitions, 66 flow [2024-06-28 00:37:25,847 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 21 transitions, 48 flow [2024-06-28 00:37:25,861 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 00:37:25,868 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;@3a20afdf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 00:37:25,868 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 00:37:25,872 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 00:37:25,872 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 00:37:25,873 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:37:25,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:37:25,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 00:37:25,874 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:37:25,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:37:25,882 INFO L85 PathProgramCache]: Analyzing trace with hash 320515457, now seen corresponding path program 1 times [2024-06-28 00:37:25,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:37:25,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236022747] [2024-06-28 00:37:25,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:37:25,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:37:26,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:26,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:26,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:26,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236022747] [2024-06-28 00:37:26,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236022747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:26,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:26,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:37:26,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438158223] [2024-06-28 00:37:26,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:26,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:37:26,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:26,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:37:26,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:37:26,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-28 00:37:26,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:26,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:26,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-28 00:37:26,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:26,499 INFO L124 PetriNetUnfolderBase]: 66/154 cut-off events. [2024-06-28 00:37:26,502 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-28 00:37:26,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 154 events. 66/154 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 585 event pairs, 33 based on Foata normal form. 1/145 useless extension candidates. Maximal degree in co-relation 286. Up to 124 conditions per place. [2024-06-28 00:37:26,507 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 17 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2024-06-28 00:37:26,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 27 transitions, 103 flow [2024-06-28 00:37:26,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:37:26,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:37:26,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-06-28 00:37:26,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.632183908045977 [2024-06-28 00:37:26,519 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 48 flow. Second operand 3 states and 55 transitions. [2024-06-28 00:37:26,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 27 transitions, 103 flow [2024-06-28 00:37:26,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 100 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 00:37:26,523 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 67 flow [2024-06-28 00:37:26,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2024-06-28 00:37:26,530 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2024-06-28 00:37:26,530 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 67 flow [2024-06-28 00:37:26,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:26,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:37:26,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:37:26,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 00:37:26,531 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:37:26,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:37:26,532 INFO L85 PathProgramCache]: Analyzing trace with hash 764644712, now seen corresponding path program 1 times [2024-06-28 00:37:26,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:37:26,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049530438] [2024-06-28 00:37:26,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:37:26,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:37:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:26,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:26,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:26,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049530438] [2024-06-28 00:37:26,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049530438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:26,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:26,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 00:37:26,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264604241] [2024-06-28 00:37:26,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:26,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 00:37:26,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:26,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 00:37:26,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 00:37:26,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-28 00:37:26,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:26,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:26,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-28 00:37:26,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:26,895 INFO L124 PetriNetUnfolderBase]: 59/141 cut-off events. [2024-06-28 00:37:26,895 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-06-28 00:37:26,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 141 events. 59/141 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 522 event pairs, 8 based on Foata normal form. 6/141 useless extension candidates. Maximal degree in co-relation 301. Up to 84 conditions per place. [2024-06-28 00:37:26,897 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 18 selfloop transitions, 4 changer transitions 0/29 dead transitions. [2024-06-28 00:37:26,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 123 flow [2024-06-28 00:37:26,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:37:26,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:37:26,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-06-28 00:37:26,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2024-06-28 00:37:26,900 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 67 flow. Second operand 4 states and 68 transitions. [2024-06-28 00:37:26,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 123 flow [2024-06-28 00:37:26,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 120 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 00:37:26,904 INFO L231 Difference]: Finished difference. Result has 31 places, 22 transitions, 72 flow [2024-06-28 00:37:26,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2024-06-28 00:37:26,905 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 3 predicate places. [2024-06-28 00:37:26,906 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 72 flow [2024-06-28 00:37:26,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:26,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:37:26,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:37:26,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 00:37:26,907 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:37:26,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:37:26,909 INFO L85 PathProgramCache]: Analyzing trace with hash -206677035, now seen corresponding path program 1 times [2024-06-28 00:37:26,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:37:26,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298458751] [2024-06-28 00:37:26,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:37:26,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:37:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:27,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:27,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:27,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298458751] [2024-06-28 00:37:27,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298458751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:27,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:27,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 00:37:27,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777339921] [2024-06-28 00:37:27,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:27,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 00:37:27,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:27,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 00:37:27,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 00:37:27,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-28 00:37:27,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:27,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:27,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-28 00:37:27,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:27,276 INFO L124 PetriNetUnfolderBase]: 57/138 cut-off events. [2024-06-28 00:37:27,277 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-06-28 00:37:27,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 138 events. 57/138 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 502 event pairs, 25 based on Foata normal form. 1/137 useless extension candidates. Maximal degree in co-relation 316. Up to 105 conditions per place. [2024-06-28 00:37:27,281 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 17 selfloop transitions, 5 changer transitions 0/29 dead transitions. [2024-06-28 00:37:27,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 29 transitions, 134 flow [2024-06-28 00:37:27,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:37:27,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:37:27,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-06-28 00:37:27,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5775862068965517 [2024-06-28 00:37:27,283 INFO L175 Difference]: Start difference. First operand has 31 places, 22 transitions, 72 flow. Second operand 4 states and 67 transitions. [2024-06-28 00:37:27,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 29 transitions, 134 flow [2024-06-28 00:37:27,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 126 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 00:37:27,285 INFO L231 Difference]: Finished difference. Result has 33 places, 24 transitions, 89 flow [2024-06-28 00:37:27,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=89, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2024-06-28 00:37:27,286 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 5 predicate places. [2024-06-28 00:37:27,286 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 89 flow [2024-06-28 00:37:27,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:27,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:37:27,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:37:27,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 00:37:27,287 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:37:27,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:37:27,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1048115212, now seen corresponding path program 1 times [2024-06-28 00:37:27,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:37:27,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953908795] [2024-06-28 00:37:27,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:37:27,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:37:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:27,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:27,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:27,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953908795] [2024-06-28 00:37:27,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953908795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:27,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:27,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:37:27,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4978010] [2024-06-28 00:37:27,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:27,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:37:27,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:27,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:37:27,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:37:27,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 29 [2024-06-28 00:37:27,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 89 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:27,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:27,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 29 [2024-06-28 00:37:27,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:28,038 INFO L124 PetriNetUnfolderBase]: 54/133 cut-off events. [2024-06-28 00:37:28,039 INFO L125 PetriNetUnfolderBase]: For 107/107 co-relation queries the response was YES. [2024-06-28 00:37:28,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 133 events. 54/133 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 478 event pairs, 24 based on Foata normal form. 2/133 useless extension candidates. Maximal degree in co-relation 323. Up to 94 conditions per place. [2024-06-28 00:37:28,040 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 18 selfloop transitions, 7 changer transitions 0/31 dead transitions. [2024-06-28 00:37:28,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 31 transitions, 155 flow [2024-06-28 00:37:28,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:37:28,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:37:28,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-06-28 00:37:28,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942528735632184 [2024-06-28 00:37:28,041 INFO L175 Difference]: Start difference. First operand has 33 places, 24 transitions, 89 flow. Second operand 6 states and 86 transitions. [2024-06-28 00:37:28,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 31 transitions, 155 flow [2024-06-28 00:37:28,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 31 transitions, 146 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 00:37:28,043 INFO L231 Difference]: Finished difference. Result has 37 places, 24 transitions, 98 flow [2024-06-28 00:37:28,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=98, PETRI_PLACES=37, PETRI_TRANSITIONS=24} [2024-06-28 00:37:28,043 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 9 predicate places. [2024-06-28 00:37:28,044 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 24 transitions, 98 flow [2024-06-28 00:37:28,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:28,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:37:28,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:37:28,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 00:37:28,044 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:37:28,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:37:28,045 INFO L85 PathProgramCache]: Analyzing trace with hash 143971162, now seen corresponding path program 1 times [2024-06-28 00:37:28,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:37:28,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322255856] [2024-06-28 00:37:28,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:37:28,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:37:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:28,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:28,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:28,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322255856] [2024-06-28 00:37:28,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322255856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:28,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:28,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:37:28,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088721259] [2024-06-28 00:37:28,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:28,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:37:28,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:28,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:37:28,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:37:28,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-28 00:37:28,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 24 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:28,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:28,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-28 00:37:28,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:28,288 INFO L124 PetriNetUnfolderBase]: 57/136 cut-off events. [2024-06-28 00:37:28,288 INFO L125 PetriNetUnfolderBase]: For 150/150 co-relation queries the response was YES. [2024-06-28 00:37:28,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 136 events. 57/136 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 503 event pairs, 13 based on Foata normal form. 1/132 useless extension candidates. Maximal degree in co-relation 350. Up to 78 conditions per place. [2024-06-28 00:37:28,289 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 20 selfloop transitions, 8 changer transitions 0/35 dead transitions. [2024-06-28 00:37:28,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 35 transitions, 182 flow [2024-06-28 00:37:28,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:37:28,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:37:28,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2024-06-28 00:37:28,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5586206896551724 [2024-06-28 00:37:28,291 INFO L175 Difference]: Start difference. First operand has 37 places, 24 transitions, 98 flow. Second operand 5 states and 81 transitions. [2024-06-28 00:37:28,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 35 transitions, 182 flow [2024-06-28 00:37:28,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 166 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 00:37:28,292 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 119 flow [2024-06-28 00:37:28,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2024-06-28 00:37:28,293 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 10 predicate places. [2024-06-28 00:37:28,293 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 119 flow [2024-06-28 00:37:28,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:28,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:37:28,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:37:28,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 00:37:28,294 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:37:28,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:37:28,294 INFO L85 PathProgramCache]: Analyzing trace with hash 170009302, now seen corresponding path program 2 times [2024-06-28 00:37:28,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:37:28,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116429551] [2024-06-28 00:37:28,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:37:28,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:37:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:28,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:28,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:28,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116429551] [2024-06-28 00:37:28,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116429551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:28,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:28,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:37:28,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408507224] [2024-06-28 00:37:28,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:28,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:37:28,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:28,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:37:28,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:37:28,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-28 00:37:28,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:28,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:28,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-28 00:37:28,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:28,516 INFO L124 PetriNetUnfolderBase]: 59/143 cut-off events. [2024-06-28 00:37:28,516 INFO L125 PetriNetUnfolderBase]: For 218/221 co-relation queries the response was YES. [2024-06-28 00:37:28,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 143 events. 59/143 cut-off events. For 218/221 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 516 event pairs, 17 based on Foata normal form. 3/142 useless extension candidates. Maximal degree in co-relation 390. Up to 74 conditions per place. [2024-06-28 00:37:28,517 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 19 selfloop transitions, 8 changer transitions 0/34 dead transitions. [2024-06-28 00:37:28,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 34 transitions, 191 flow [2024-06-28 00:37:28,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:37:28,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:37:28,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2024-06-28 00:37:28,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5310344827586206 [2024-06-28 00:37:28,519 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 119 flow. Second operand 5 states and 77 transitions. [2024-06-28 00:37:28,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 34 transitions, 191 flow [2024-06-28 00:37:28,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 34 transitions, 189 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-28 00:37:28,520 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 153 flow [2024-06-28 00:37:28,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=153, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2024-06-28 00:37:28,521 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 15 predicate places. [2024-06-28 00:37:28,521 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 153 flow [2024-06-28 00:37:28,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:28,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:37:28,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:37:28,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 00:37:28,522 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:37:28,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:37:28,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1548763409, now seen corresponding path program 1 times [2024-06-28 00:37:28,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:37:28,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412778607] [2024-06-28 00:37:28,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:37:28,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:37:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:28,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:28,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:28,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412778607] [2024-06-28 00:37:28,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412778607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:28,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:28,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:37:28,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329291891] [2024-06-28 00:37:28,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:28,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:37:28,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:28,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:37:28,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:37:28,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2024-06-28 00:37:28,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 153 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:28,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:28,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2024-06-28 00:37:28,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:28,973 INFO L124 PetriNetUnfolderBase]: 72/175 cut-off events. [2024-06-28 00:37:28,973 INFO L125 PetriNetUnfolderBase]: For 359/359 co-relation queries the response was YES. [2024-06-28 00:37:28,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 556 conditions, 175 events. 72/175 cut-off events. For 359/359 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 725 event pairs, 15 based on Foata normal form. 2/172 useless extension candidates. Maximal degree in co-relation 535. Up to 87 conditions per place. [2024-06-28 00:37:28,974 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 27 selfloop transitions, 14 changer transitions 0/47 dead transitions. [2024-06-28 00:37:28,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 47 transitions, 296 flow [2024-06-28 00:37:28,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:37:28,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:37:28,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2024-06-28 00:37:28,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876847290640394 [2024-06-28 00:37:28,976 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 153 flow. Second operand 7 states and 99 transitions. [2024-06-28 00:37:28,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 47 transitions, 296 flow [2024-06-28 00:37:28,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 47 transitions, 274 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 00:37:28,978 INFO L231 Difference]: Finished difference. Result has 48 places, 35 transitions, 206 flow [2024-06-28 00:37:28,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=206, PETRI_PLACES=48, PETRI_TRANSITIONS=35} [2024-06-28 00:37:28,979 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 20 predicate places. [2024-06-28 00:37:28,979 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 35 transitions, 206 flow [2024-06-28 00:37:28,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:28,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:37:28,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:37:28,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 00:37:28,979 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:37:28,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:37:28,980 INFO L85 PathProgramCache]: Analyzing trace with hash 2065170579, now seen corresponding path program 2 times [2024-06-28 00:37:28,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:37:28,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910976792] [2024-06-28 00:37:28,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:37:28,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:37:28,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:29,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:29,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:29,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910976792] [2024-06-28 00:37:29,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910976792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:29,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:29,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:37:29,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936490255] [2024-06-28 00:37:29,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:29,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:37:29,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:29,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:37:29,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:37:29,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-28 00:37:29,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 35 transitions, 206 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:29,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:29,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-28 00:37:29,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:29,296 INFO L124 PetriNetUnfolderBase]: 76/186 cut-off events. [2024-06-28 00:37:29,297 INFO L125 PetriNetUnfolderBase]: For 515/515 co-relation queries the response was YES. [2024-06-28 00:37:29,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 186 events. 76/186 cut-off events. For 515/515 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 766 event pairs, 10 based on Foata normal form. 2/186 useless extension candidates. Maximal degree in co-relation 607. Up to 87 conditions per place. [2024-06-28 00:37:29,298 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 26 selfloop transitions, 11 changer transitions 0/44 dead transitions. [2024-06-28 00:37:29,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 310 flow [2024-06-28 00:37:29,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:37:29,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:37:29,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2024-06-28 00:37:29,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5655172413793104 [2024-06-28 00:37:29,300 INFO L175 Difference]: Start difference. First operand has 48 places, 35 transitions, 206 flow. Second operand 5 states and 82 transitions. [2024-06-28 00:37:29,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 310 flow [2024-06-28 00:37:29,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 44 transitions, 282 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 00:37:29,303 INFO L231 Difference]: Finished difference. Result has 50 places, 36 transitions, 222 flow [2024-06-28 00:37:29,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=222, PETRI_PLACES=50, PETRI_TRANSITIONS=36} [2024-06-28 00:37:29,306 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 22 predicate places. [2024-06-28 00:37:29,306 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 36 transitions, 222 flow [2024-06-28 00:37:29,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:29,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:37:29,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:37:29,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 00:37:29,307 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:37:29,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:37:29,307 INFO L85 PathProgramCache]: Analyzing trace with hash 168139189, now seen corresponding path program 3 times [2024-06-28 00:37:29,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:37:29,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954982125] [2024-06-28 00:37:29,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:37:29,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:37:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:29,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:29,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:29,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954982125] [2024-06-28 00:37:29,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954982125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:29,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:29,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:37:29,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136499899] [2024-06-28 00:37:29,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:29,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:37:29,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:29,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:37:29,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:37:29,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-28 00:37:29,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 36 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:29,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:29,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-28 00:37:29,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:29,690 INFO L124 PetriNetUnfolderBase]: 80/195 cut-off events. [2024-06-28 00:37:29,690 INFO L125 PetriNetUnfolderBase]: For 609/609 co-relation queries the response was YES. [2024-06-28 00:37:29,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 195 events. 80/195 cut-off events. For 609/609 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 845 event pairs, 16 based on Foata normal form. 2/189 useless extension candidates. Maximal degree in co-relation 644. Up to 105 conditions per place. [2024-06-28 00:37:29,692 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 26 selfloop transitions, 11 changer transitions 0/44 dead transitions. [2024-06-28 00:37:29,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 44 transitions, 322 flow [2024-06-28 00:37:29,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:37:29,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:37:29,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2024-06-28 00:37:29,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5655172413793104 [2024-06-28 00:37:29,693 INFO L175 Difference]: Start difference. First operand has 50 places, 36 transitions, 222 flow. Second operand 5 states and 82 transitions. [2024-06-28 00:37:29,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 44 transitions, 322 flow [2024-06-28 00:37:29,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 44 transitions, 298 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 00:37:29,695 INFO L231 Difference]: Finished difference. Result has 52 places, 37 transitions, 238 flow [2024-06-28 00:37:29,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=238, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2024-06-28 00:37:29,696 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 24 predicate places. [2024-06-28 00:37:29,696 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions, 238 flow [2024-06-28 00:37:29,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:29,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:37:29,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:37:29,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 00:37:29,697 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:37:29,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:37:29,698 INFO L85 PathProgramCache]: Analyzing trace with hash 2070983187, now seen corresponding path program 4 times [2024-06-28 00:37:29,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:37:29,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489665036] [2024-06-28 00:37:29,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:37:29,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:37:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:30,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:30,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:30,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489665036] [2024-06-28 00:37:30,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489665036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:30,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:30,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:37:30,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364922117] [2024-06-28 00:37:30,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:30,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:37:30,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:30,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:37:30,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:37:30,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-28 00:37:30,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 238 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:30,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:30,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-28 00:37:30,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:30,127 INFO L124 PetriNetUnfolderBase]: 77/192 cut-off events. [2024-06-28 00:37:30,128 INFO L125 PetriNetUnfolderBase]: For 637/637 co-relation queries the response was YES. [2024-06-28 00:37:30,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 647 conditions, 192 events. 77/192 cut-off events. For 637/637 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 830 event pairs, 20 based on Foata normal form. 2/187 useless extension candidates. Maximal degree in co-relation 622. Up to 72 conditions per place. [2024-06-28 00:37:30,129 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 23 selfloop transitions, 14 changer transitions 0/44 dead transitions. [2024-06-28 00:37:30,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 44 transitions, 328 flow [2024-06-28 00:37:30,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:37:30,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:37:30,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2024-06-28 00:37:30,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5586206896551724 [2024-06-28 00:37:30,131 INFO L175 Difference]: Start difference. First operand has 52 places, 37 transitions, 238 flow. Second operand 5 states and 81 transitions. [2024-06-28 00:37:30,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 44 transitions, 328 flow [2024-06-28 00:37:30,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 44 transitions, 306 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 00:37:30,134 INFO L231 Difference]: Finished difference. Result has 54 places, 37 transitions, 249 flow [2024-06-28 00:37:30,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=249, PETRI_PLACES=54, PETRI_TRANSITIONS=37} [2024-06-28 00:37:30,135 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 26 predicate places. [2024-06-28 00:37:30,135 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 37 transitions, 249 flow [2024-06-28 00:37:30,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:30,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:37:30,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:37:30,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 00:37:30,136 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:37:30,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:37:30,136 INFO L85 PathProgramCache]: Analyzing trace with hash 95941185, now seen corresponding path program 1 times [2024-06-28 00:37:30,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:37:30,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435171263] [2024-06-28 00:37:30,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:37:30,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:37:30,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:30,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:30,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:30,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435171263] [2024-06-28 00:37:30,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435171263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:30,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:30,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:37:30,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236819092] [2024-06-28 00:37:30,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:30,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:37:30,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:30,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:37:30,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:37:30,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-28 00:37:30,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 37 transitions, 249 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:30,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:30,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-28 00:37:30,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:30,506 INFO L124 PetriNetUnfolderBase]: 78/203 cut-off events. [2024-06-28 00:37:30,506 INFO L125 PetriNetUnfolderBase]: For 769/769 co-relation queries the response was YES. [2024-06-28 00:37:30,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 659 conditions, 203 events. 78/203 cut-off events. For 769/769 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 905 event pairs, 23 based on Foata normal form. 6/202 useless extension candidates. Maximal degree in co-relation 633. Up to 53 conditions per place. [2024-06-28 00:37:30,507 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 18 selfloop transitions, 8 changer transitions 12/45 dead transitions. [2024-06-28 00:37:30,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 45 transitions, 343 flow [2024-06-28 00:37:30,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:37:30,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:37:30,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2024-06-28 00:37:30,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5655172413793104 [2024-06-28 00:37:30,508 INFO L175 Difference]: Start difference. First operand has 54 places, 37 transitions, 249 flow. Second operand 5 states and 82 transitions. [2024-06-28 00:37:30,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 45 transitions, 343 flow [2024-06-28 00:37:30,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 45 transitions, 312 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 00:37:30,510 INFO L231 Difference]: Finished difference. Result has 57 places, 29 transitions, 186 flow [2024-06-28 00:37:30,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=186, PETRI_PLACES=57, PETRI_TRANSITIONS=29} [2024-06-28 00:37:30,511 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 29 predicate places. [2024-06-28 00:37:30,511 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 29 transitions, 186 flow [2024-06-28 00:37:30,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:30,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:37:30,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:37:30,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 00:37:30,512 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:37:30,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:37:30,512 INFO L85 PathProgramCache]: Analyzing trace with hash 531037388, now seen corresponding path program 1 times [2024-06-28 00:37:30,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:37:30,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188818816] [2024-06-28 00:37:30,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:37:30,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:37:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:30,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:30,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:30,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188818816] [2024-06-28 00:37:30,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188818816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:30,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:30,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:37:30,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537770533] [2024-06-28 00:37:30,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:30,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:37:30,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:30,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:37:30,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:37:31,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-28 00:37:31,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 29 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:31,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:31,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-28 00:37:31,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:31,073 INFO L124 PetriNetUnfolderBase]: 42/122 cut-off events. [2024-06-28 00:37:31,074 INFO L125 PetriNetUnfolderBase]: For 584/584 co-relation queries the response was YES. [2024-06-28 00:37:31,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 122 events. 42/122 cut-off events. For 584/584 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 445 event pairs, 5 based on Foata normal form. 4/122 useless extension candidates. Maximal degree in co-relation 381. Up to 33 conditions per place. [2024-06-28 00:37:31,074 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 13 selfloop transitions, 4 changer transitions 11/35 dead transitions. [2024-06-28 00:37:31,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 35 transitions, 254 flow [2024-06-28 00:37:31,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:37:31,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:37:31,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2024-06-28 00:37:31,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5379310344827586 [2024-06-28 00:37:31,076 INFO L175 Difference]: Start difference. First operand has 57 places, 29 transitions, 186 flow. Second operand 5 states and 78 transitions. [2024-06-28 00:37:31,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 35 transitions, 254 flow [2024-06-28 00:37:31,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 35 transitions, 209 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-28 00:37:31,078 INFO L231 Difference]: Finished difference. Result has 49 places, 20 transitions, 92 flow [2024-06-28 00:37:31,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=49, PETRI_TRANSITIONS=20} [2024-06-28 00:37:31,078 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 21 predicate places. [2024-06-28 00:37:31,078 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 20 transitions, 92 flow [2024-06-28 00:37:31,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:31,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:37:31,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:37:31,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 00:37:31,079 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:37:31,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:37:31,080 INFO L85 PathProgramCache]: Analyzing trace with hash 382219954, now seen corresponding path program 2 times [2024-06-28 00:37:31,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:37:31,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147842557] [2024-06-28 00:37:31,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:37:31,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:37:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:31,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:31,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:31,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147842557] [2024-06-28 00:37:31,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147842557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:31,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:31,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:37:31,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199806655] [2024-06-28 00:37:31,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:31,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:37:31,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:31,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:37:31,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:37:31,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-28 00:37:31,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 20 transitions, 92 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:31,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:31,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-28 00:37:31,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:31,624 INFO L124 PetriNetUnfolderBase]: 15/51 cut-off events. [2024-06-28 00:37:31,625 INFO L125 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2024-06-28 00:37:31,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 51 events. 15/51 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 92 event pairs, 0 based on Foata normal form. 4/54 useless extension candidates. Maximal degree in co-relation 133. Up to 24 conditions per place. [2024-06-28 00:37:31,625 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2024-06-28 00:37:31,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 23 transitions, 114 flow [2024-06-28 00:37:31,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:37:31,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:37:31,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2024-06-28 00:37:31,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47701149425287354 [2024-06-28 00:37:31,627 INFO L175 Difference]: Start difference. First operand has 49 places, 20 transitions, 92 flow. Second operand 6 states and 83 transitions. [2024-06-28 00:37:31,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 23 transitions, 114 flow [2024-06-28 00:37:31,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 23 transitions, 84 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-06-28 00:37:31,628 INFO L231 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2024-06-28 00:37:31,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2024-06-28 00:37:31,628 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 6 predicate places. [2024-06-28 00:37:31,628 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2024-06-28 00:37:31,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:31,631 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 00:37:31,632 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 00:37:31,632 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 00:37:31,632 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 00:37:31,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 00:37:31,632 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 2, 1, 1, 1, 1, 1] [2024-06-28 00:37:31,635 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 00:37:31,635 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 00:37:31,637 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 00:37:31,638 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 00:37:31,638 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 12:37:31 BasicIcfg [2024-06-28 00:37:31,638 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 00:37:31,639 INFO L158 Benchmark]: Toolchain (without parser) took 7260.97ms. Allocated memory was 176.2MB in the beginning and 390.1MB in the end (delta: 213.9MB). Free memory was 103.0MB in the beginning and 277.5MB in the end (delta: -174.5MB). Peak memory consumption was 41.7MB. Max. memory is 16.1GB. [2024-06-28 00:37:31,639 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 176.2MB. Free memory was 133.0MB in the beginning and 132.9MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 00:37:31,639 INFO L158 Benchmark]: Witness Parser took 0.19ms. Allocated memory is still 176.2MB. Free memory is still 105.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 00:37:31,639 INFO L158 Benchmark]: CACSL2BoogieTranslator took 553.24ms. Allocated memory is still 176.2MB. Free memory was 102.8MB in the beginning and 129.8MB in the end (delta: -27.0MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. [2024-06-28 00:37:31,640 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.82ms. Allocated memory is still 176.2MB. Free memory was 129.8MB in the beginning and 125.8MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 00:37:31,640 INFO L158 Benchmark]: Boogie Preprocessor took 70.72ms. Allocated memory is still 176.2MB. Free memory was 125.8MB in the beginning and 123.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 00:37:31,640 INFO L158 Benchmark]: RCFGBuilder took 606.31ms. Allocated memory is still 176.2MB. Free memory was 123.5MB in the beginning and 75.5MB in the end (delta: 48.0MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2024-06-28 00:37:31,640 INFO L158 Benchmark]: TraceAbstraction took 5960.59ms. Allocated memory was 176.2MB in the beginning and 390.1MB in the end (delta: 213.9MB). Free memory was 75.2MB in the beginning and 277.5MB in the end (delta: -202.3MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2024-06-28 00:37:31,642 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 176.2MB. Free memory was 133.0MB in the beginning and 132.9MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.19ms. Allocated memory is still 176.2MB. Free memory is still 105.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 553.24ms. Allocated memory is still 176.2MB. Free memory was 102.8MB in the beginning and 129.8MB in the end (delta: -27.0MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.82ms. Allocated memory is still 176.2MB. Free memory was 129.8MB in the beginning and 125.8MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.72ms. Allocated memory is still 176.2MB. Free memory was 125.8MB in the beginning and 123.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 606.31ms. Allocated memory is still 176.2MB. Free memory was 123.5MB in the beginning and 75.5MB in the end (delta: 48.0MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * TraceAbstraction took 5960.59ms. Allocated memory was 176.2MB in the beginning and 390.1MB in the end (delta: 213.9MB). Free memory was 75.2MB in the beginning and 277.5MB in the end (delta: -202.3MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 793]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 794]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 46 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.8s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 234 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 174 mSDsluCounter, 61 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 38 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 974 IncrementalHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 23 mSDtfsCounter, 974 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=249occurred in iteration=10, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 164 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 151 ConstructedInterpolants, 0 QuantifiedInterpolants, 2350 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 00:37:31,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE