./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe001_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 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/safe001_tso.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe001_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-?-80b1b13-m [2024-01-31 16:43:49,795 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:43:49,850 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:43:49,853 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:43:49,853 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:43:49,879 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:43:49,879 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:43:49,879 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:43:49,880 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:43:49,880 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:43:49,880 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:43:49,881 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:43:49,881 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:43:49,881 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:43:49,882 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:43:49,882 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:43:49,882 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:43:49,882 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:43:49,883 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:43:49,883 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:43:49,883 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:43:49,896 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:43:49,896 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:43:49,896 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:43:49,897 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:43:49,897 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:43:49,897 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:43:49,897 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:43:49,897 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:43:49,898 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:43:49,898 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:43:49,898 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:43:49,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:43:49,898 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:43:49,899 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:43:49,899 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:43:49,899 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:43:49,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:43:49,899 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:43:49,899 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:43:49,900 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:43:49,900 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:43:49,900 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:43:49,900 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:43:50,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:43:50,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:43:50,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:43:50,146 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:43:50,147 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:43:50,148 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe001_tso.yml/witness.yml [2024-01-31 16:43:50,388 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:43:50,388 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:43:50,389 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.i [2024-01-31 16:43:51,466 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:43:51,691 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:43:51,692 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.i [2024-01-31 16:43:51,708 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f36ab40a/7c71a8f9afe94d6782ea3485bc6530b9/FLAG1771fb253 [2024-01-31 16:43:51,721 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f36ab40a/7c71a8f9afe94d6782ea3485bc6530b9 [2024-01-31 16:43:51,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:43:51,723 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:43:51,726 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:43:51,726 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:43:51,729 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:43:51,730 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:43:50" (1/2) ... [2024-01-31 16:43:51,731 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54323739 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:43:51, skipping insertion in model container [2024-01-31 16:43:51,731 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:43:50" (1/2) ... [2024-01-31 16:43:51,732 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@479a0060 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:43:51, skipping insertion in model container [2024-01-31 16:43:51,732 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:43:51" (2/2) ... [2024-01-31 16:43:51,733 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54323739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:51, skipping insertion in model container [2024-01-31 16:43:51,733 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:43:51" (2/2) ... [2024-01-31 16:43:51,734 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:43:52,074 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:43:52,075 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-01-31 16:43:52,075 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 0 [2024-01-31 16:43:52,109 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:43:52,248 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.i[945,958] [2024-01-31 16:43:52,356 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:43:52,365 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:43:52,375 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.i[945,958] Start Parsing Local [2024-01-31 16:43:52,405 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry [2024-01-31 16:43:52,430 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:43:52,471 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:43:52,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:52 WrapperNode [2024-01-31 16:43:52,472 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:43:52,473 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:43:52,473 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:43:52,474 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:43:52,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:52" (1/1) ... [2024-01-31 16:43:52,508 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:52" (1/1) ... [2024-01-31 16:43:52,532 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2024-01-31 16:43:52,532 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:43:52,533 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:43:52,533 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:43:52,533 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:43:52,542 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:52" (1/1) ... [2024-01-31 16:43:52,542 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:52" (1/1) ... [2024-01-31 16:43:52,557 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:52" (1/1) ... [2024-01-31 16:43:52,581 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-01-31 16:43:52,583 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:52" (1/1) ... [2024-01-31 16:43:52,583 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:52" (1/1) ... [2024-01-31 16:43:52,590 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:52" (1/1) ... [2024-01-31 16:43:52,592 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:52" (1/1) ... [2024-01-31 16:43:52,595 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:52" (1/1) ... [2024-01-31 16:43:52,599 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:52" (1/1) ... [2024-01-31 16:43:52,601 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:43:52,603 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:43:52,603 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:43:52,603 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:43:52,604 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:52" (1/1) ... [2024-01-31 16:43:52,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:43:52,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:43:52,658 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) [2024-01-31 16:43:52,703 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 [2024-01-31 16:43:52,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:43:52,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:43:52,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:43:52,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:43:52,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 16:43:52,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:43:52,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:43:52,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:43:52,737 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-31 16:43:52,737 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-31 16:43:52,737 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-31 16:43:52,737 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-31 16:43:52,738 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-31 16:43:52,738 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-31 16:43:52,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:43:52,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:43:52,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:43:52,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:43:52,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 16:43:52,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:43:52,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:43:52,741 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:43:52,836 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:43:52,838 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:43:52,969 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:43:52,970 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:43:53,044 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:43:53,045 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 16:43:53,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:43:53 BoogieIcfgContainer [2024-01-31 16:43:53,045 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:43:53,047 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:43:53,047 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:43:53,049 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:43:53,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:43:50" (1/4) ... [2024-01-31 16:43:53,050 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4208a53f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:43:53, skipping insertion in model container [2024-01-31 16:43:53,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:43:51" (2/4) ... [2024-01-31 16:43:53,050 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4208a53f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:43:53, skipping insertion in model container [2024-01-31 16:43:53,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:52" (3/4) ... [2024-01-31 16:43:53,051 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4208a53f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:43:53, skipping insertion in model container [2024-01-31 16:43:53,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:43:53" (4/4) ... [2024-01-31 16:43:53,052 INFO L112 eAbstractionObserver]: Analyzing ICFG safe001_tso.i [2024-01-31 16:43:53,064 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:43:53,065 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-01-31 16:43:53,065 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:43:53,120 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:43:53,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 40 transitions, 92 flow [2024-01-31 16:43:53,243 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2024-01-31 16:43:53,244 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:43:53,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 37 events. 1/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-01-31 16:43:53,247 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 40 transitions, 92 flow [2024-01-31 16:43:53,251 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 34 transitions, 77 flow [2024-01-31 16:43:53,279 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:43:53,286 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;@352d94cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:43:53,287 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-01-31 16:43:53,305 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:43:53,306 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-01-31 16:43:53,306 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:43:53,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:53,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:43:53,307 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:43:53,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:53,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1116065905, now seen corresponding path program 1 times [2024-01-31 16:43:53,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:53,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081661245] [2024-01-31 16:43:53,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:53,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:53,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:43:53,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:53,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081661245] [2024-01-31 16:43:53,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081661245] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:53,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:53,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:43:53,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480186428] [2024-01-31 16:43:53,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:53,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:43:53,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:53,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:43:53,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:43:53,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 40 [2024-01-31 16:43:53,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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) [2024-01-31 16:43:53,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:53,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 40 [2024-01-31 16:43:53,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:53,710 INFO L124 PetriNetUnfolderBase]: 75/203 cut-off events. [2024-01-31 16:43:53,710 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:43:53,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 203 events. 75/203 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1041 event pairs, 51 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 347. Up to 97 conditions per place. [2024-01-31 16:43:53,714 INFO L140 encePairwiseOnDemand]: 38/40 looper letters, 16 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2024-01-31 16:43:53,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 36 transitions, 115 flow [2024-01-31 16:43:53,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:43:53,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:43:53,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-01-31 16:43:53,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-01-31 16:43:53,724 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 77 flow. Second operand 3 states and 84 transitions. [2024-01-31 16:43:53,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 36 transitions, 115 flow [2024-01-31 16:43:53,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 36 transitions, 112 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:43:53,728 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 74 flow [2024-01-31 16:43:53,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2024-01-31 16:43:53,732 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -2 predicate places. [2024-01-31 16:43:53,732 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 74 flow [2024-01-31 16:43:53,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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) [2024-01-31 16:43:53,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:53,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:43:53,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:43:53,733 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:43:53,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:53,734 INFO L85 PathProgramCache]: Analyzing trace with hash 238304887, now seen corresponding path program 1 times [2024-01-31 16:43:53,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:53,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145503374] [2024-01-31 16:43:53,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:53,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:53,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:43:53,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:53,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145503374] [2024-01-31 16:43:53,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145503374] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:53,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:53,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:43:53,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422883022] [2024-01-31 16:43:54,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:54,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:43:54,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:54,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:43:54,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:43:54,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-01-31 16:43:54,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 74 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:43:54,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:54,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-01-31 16:43:54,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:54,311 INFO L124 PetriNetUnfolderBase]: 1800/3273 cut-off events. [2024-01-31 16:43:54,311 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2024-01-31 16:43:54,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6155 conditions, 3273 events. 1800/3273 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 23547 event pairs, 563 based on Foata normal form. 99/3312 useless extension candidates. Maximal degree in co-relation 6146. Up to 1145 conditions per place. [2024-01-31 16:43:54,332 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 32 selfloop transitions, 7 changer transitions 39/90 dead transitions. [2024-01-31 16:43:54,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 90 transitions, 350 flow [2024-01-31 16:43:54,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:43:54,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:43:54,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-01-31 16:43:54,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6607142857142857 [2024-01-31 16:43:54,335 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 74 flow. Second operand 7 states and 185 transitions. [2024-01-31 16:43:54,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 90 transitions, 350 flow [2024-01-31 16:43:54,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 90 transitions, 348 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:43:54,341 INFO L231 Difference]: Finished difference. Result has 53 places, 39 transitions, 159 flow [2024-01-31 16:43:54,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=159, PETRI_PLACES=53, PETRI_TRANSITIONS=39} [2024-01-31 16:43:54,342 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 9 predicate places. [2024-01-31 16:43:54,342 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 39 transitions, 159 flow [2024-01-31 16:43:54,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:43:54,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:54,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:43:54,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:43:54,343 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:43:54,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:54,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1682760888, now seen corresponding path program 1 times [2024-01-31 16:43:54,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:54,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415685239] [2024-01-31 16:43:54,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:54,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:54,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:43:54,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:54,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415685239] [2024-01-31 16:43:54,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415685239] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:54,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:54,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:43:54,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305253642] [2024-01-31 16:43:54,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:54,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:43:54,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:54,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:43:54,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:43:54,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-01-31 16:43:54,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 39 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:43:54,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:54,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-01-31 16:43:54,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:54,903 INFO L124 PetriNetUnfolderBase]: 1468/2869 cut-off events. [2024-01-31 16:43:54,903 INFO L125 PetriNetUnfolderBase]: For 3690/3715 co-relation queries the response was YES. [2024-01-31 16:43:54,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8191 conditions, 2869 events. 1468/2869 cut-off events. For 3690/3715 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 21021 event pairs, 187 based on Foata normal form. 114/2942 useless extension candidates. Maximal degree in co-relation 8175. Up to 810 conditions per place. [2024-01-31 16:43:54,921 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 43 selfloop transitions, 11 changer transitions 66/132 dead transitions. [2024-01-31 16:43:54,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 132 transitions, 912 flow [2024-01-31 16:43:54,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:43:54,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:43:54,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 255 transitions. [2024-01-31 16:43:54,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6375 [2024-01-31 16:43:54,923 INFO L175 Difference]: Start difference. First operand has 53 places, 39 transitions, 159 flow. Second operand 10 states and 255 transitions. [2024-01-31 16:43:54,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 132 transitions, 912 flow [2024-01-31 16:43:54,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 132 transitions, 838 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:43:54,932 INFO L231 Difference]: Finished difference. Result has 65 places, 47 transitions, 279 flow [2024-01-31 16:43:54,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=279, PETRI_PLACES=65, PETRI_TRANSITIONS=47} [2024-01-31 16:43:54,933 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 21 predicate places. [2024-01-31 16:43:54,933 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 47 transitions, 279 flow [2024-01-31 16:43:54,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:43:54,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:54,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:43:54,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:43:54,934 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:43:54,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:54,934 INFO L85 PathProgramCache]: Analyzing trace with hash -199812672, now seen corresponding path program 1 times [2024-01-31 16:43:54,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:54,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909392951] [2024-01-31 16:43:54,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:54,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:55,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:43:55,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:55,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909392951] [2024-01-31 16:43:55,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909392951] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:55,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:55,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:43:55,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383046428] [2024-01-31 16:43:55,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:55,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:43:55,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:55,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:43:55,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:43:55,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-01-31 16:43:55,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 47 transitions, 279 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:43:55,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:55,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-01-31 16:43:55,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:55,346 INFO L124 PetriNetUnfolderBase]: 1181/2219 cut-off events. [2024-01-31 16:43:55,346 INFO L125 PetriNetUnfolderBase]: For 6683/6687 co-relation queries the response was YES. [2024-01-31 16:43:55,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7615 conditions, 2219 events. 1181/2219 cut-off events. For 6683/6687 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 14695 event pairs, 224 based on Foata normal form. 44/2233 useless extension candidates. Maximal degree in co-relation 7590. Up to 809 conditions per place. [2024-01-31 16:43:55,362 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 51 selfloop transitions, 14 changer transitions 40/117 dead transitions. [2024-01-31 16:43:55,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 117 transitions, 896 flow [2024-01-31 16:43:55,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:43:55,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:43:55,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 241 transitions. [2024-01-31 16:43:55,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6025 [2024-01-31 16:43:55,364 INFO L175 Difference]: Start difference. First operand has 65 places, 47 transitions, 279 flow. Second operand 10 states and 241 transitions. [2024-01-31 16:43:55,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 117 transitions, 896 flow [2024-01-31 16:43:55,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 117 transitions, 868 flow, removed 14 selfloop flow, removed 0 redundant places. [2024-01-31 16:43:55,379 INFO L231 Difference]: Finished difference. Result has 77 places, 53 transitions, 409 flow [2024-01-31 16:43:55,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=409, PETRI_PLACES=77, PETRI_TRANSITIONS=53} [2024-01-31 16:43:55,379 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 33 predicate places. [2024-01-31 16:43:55,380 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 53 transitions, 409 flow [2024-01-31 16:43:55,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:43:55,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:55,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:43:55,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:43:55,381 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:43:55,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:55,381 INFO L85 PathProgramCache]: Analyzing trace with hash -41427455, now seen corresponding path program 1 times [2024-01-31 16:43:55,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:55,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114252676] [2024-01-31 16:43:55,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:55,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:55,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:43:55,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:55,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114252676] [2024-01-31 16:43:55,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114252676] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:55,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:55,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:43:55,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117014863] [2024-01-31 16:43:55,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:55,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:43:55,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:55,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:43:55,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:43:55,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-01-31 16:43:55,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 53 transitions, 409 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:43:55,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:55,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-01-31 16:43:55,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:55,817 INFO L124 PetriNetUnfolderBase]: 1396/2779 cut-off events. [2024-01-31 16:43:55,818 INFO L125 PetriNetUnfolderBase]: For 11606/11620 co-relation queries the response was YES. [2024-01-31 16:43:55,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10028 conditions, 2779 events. 1396/2779 cut-off events. For 11606/11620 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 20839 event pairs, 278 based on Foata normal form. 51/2778 useless extension candidates. Maximal degree in co-relation 9992. Up to 653 conditions per place. [2024-01-31 16:43:55,832 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 46 selfloop transitions, 12 changer transitions 37/107 dead transitions. [2024-01-31 16:43:55,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 107 transitions, 962 flow [2024-01-31 16:43:55,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:43:55,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:43:55,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-01-31 16:43:55,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6392857142857142 [2024-01-31 16:43:55,834 INFO L175 Difference]: Start difference. First operand has 77 places, 53 transitions, 409 flow. Second operand 7 states and 179 transitions. [2024-01-31 16:43:55,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 107 transitions, 962 flow [2024-01-31 16:43:55,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 107 transitions, 903 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-01-31 16:43:55,853 INFO L231 Difference]: Finished difference. Result has 71 places, 47 transitions, 342 flow [2024-01-31 16:43:55,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=342, PETRI_PLACES=71, PETRI_TRANSITIONS=47} [2024-01-31 16:43:55,854 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 27 predicate places. [2024-01-31 16:43:55,854 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 47 transitions, 342 flow [2024-01-31 16:43:55,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:43:55,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:55,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:43:55,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:43:55,855 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:43:55,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:55,855 INFO L85 PathProgramCache]: Analyzing trace with hash 737754017, now seen corresponding path program 1 times [2024-01-31 16:43:55,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:55,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845981239] [2024-01-31 16:43:55,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:55,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:55,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:43:55,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:55,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845981239] [2024-01-31 16:43:55,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845981239] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:55,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:55,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:43:55,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817461757] [2024-01-31 16:43:55,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:55,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:43:55,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:55,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:43:55,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:43:55,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-01-31 16:43:55,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 47 transitions, 342 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:43:55,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:55,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-01-31 16:43:55,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:56,220 INFO L124 PetriNetUnfolderBase]: 813/1633 cut-off events. [2024-01-31 16:43:56,221 INFO L125 PetriNetUnfolderBase]: For 5844/5850 co-relation queries the response was YES. [2024-01-31 16:43:56,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6014 conditions, 1633 events. 813/1633 cut-off events. For 5844/5850 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 11233 event pairs, 123 based on Foata normal form. 32/1647 useless extension candidates. Maximal degree in co-relation 5982. Up to 570 conditions per place. [2024-01-31 16:43:56,231 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 37 selfloop transitions, 14 changer transitions 32/95 dead transitions. [2024-01-31 16:43:56,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 95 transitions, 814 flow [2024-01-31 16:43:56,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:43:56,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:43:56,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 225 transitions. [2024-01-31 16:43:56,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-01-31 16:43:56,233 INFO L175 Difference]: Start difference. First operand has 71 places, 47 transitions, 342 flow. Second operand 10 states and 225 transitions. [2024-01-31 16:43:56,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 95 transitions, 814 flow [2024-01-31 16:43:56,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 95 transitions, 736 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-01-31 16:43:56,243 INFO L231 Difference]: Finished difference. Result has 79 places, 51 transitions, 427 flow [2024-01-31 16:43:56,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=427, PETRI_PLACES=79, PETRI_TRANSITIONS=51} [2024-01-31 16:43:56,244 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 35 predicate places. [2024-01-31 16:43:56,244 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 51 transitions, 427 flow [2024-01-31 16:43:56,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:43:56,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:56,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:43:56,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:43:56,245 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:43:56,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:56,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1763157397, now seen corresponding path program 2 times [2024-01-31 16:43:56,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:56,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675285458] [2024-01-31 16:43:56,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:56,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:56,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:43:56,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:56,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675285458] [2024-01-31 16:43:56,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675285458] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:56,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:56,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:43:56,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362305813] [2024-01-31 16:43:56,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:56,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:43:56,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:56,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:43:56,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:43:56,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-01-31 16:43:56,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 51 transitions, 427 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:43:56,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:56,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-01-31 16:43:56,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:56,674 INFO L124 PetriNetUnfolderBase]: 863/1745 cut-off events. [2024-01-31 16:43:56,674 INFO L125 PetriNetUnfolderBase]: For 7955/7961 co-relation queries the response was YES. [2024-01-31 16:43:56,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6617 conditions, 1745 events. 863/1745 cut-off events. For 7955/7961 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 12363 event pairs, 168 based on Foata normal form. 48/1739 useless extension candidates. Maximal degree in co-relation 6581. Up to 576 conditions per place. [2024-01-31 16:43:56,687 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 36 selfloop transitions, 8 changer transitions 44/100 dead transitions. [2024-01-31 16:43:56,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 100 transitions, 1022 flow [2024-01-31 16:43:56,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:43:56,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:43:56,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-01-31 16:43:56,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-01-31 16:43:56,689 INFO L175 Difference]: Start difference. First operand has 79 places, 51 transitions, 427 flow. Second operand 7 states and 170 transitions. [2024-01-31 16:43:56,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 100 transitions, 1022 flow [2024-01-31 16:43:56,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 100 transitions, 969 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-01-31 16:43:56,706 INFO L231 Difference]: Finished difference. Result has 77 places, 40 transitions, 291 flow [2024-01-31 16:43:56,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=291, PETRI_PLACES=77, PETRI_TRANSITIONS=40} [2024-01-31 16:43:56,707 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 33 predicate places. [2024-01-31 16:43:56,708 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 40 transitions, 291 flow [2024-01-31 16:43:56,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:43:56,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:56,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:43:56,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 16:43:56,708 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:43:56,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:56,709 INFO L85 PathProgramCache]: Analyzing trace with hash 924106394, now seen corresponding path program 1 times [2024-01-31 16:43:56,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:56,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54964062] [2024-01-31 16:43:56,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:56,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:56,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:43:56,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:56,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54964062] [2024-01-31 16:43:56,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54964062] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:56,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:56,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:43:56,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309592356] [2024-01-31 16:43:56,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:56,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:43:56,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:56,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:43:56,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:43:56,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-01-31 16:43:56,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 40 transitions, 291 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:43:56,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:56,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-01-31 16:43:56,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:57,042 INFO L124 PetriNetUnfolderBase]: 416/882 cut-off events. [2024-01-31 16:43:57,043 INFO L125 PetriNetUnfolderBase]: For 3201/3201 co-relation queries the response was YES. [2024-01-31 16:43:57,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3136 conditions, 882 events. 416/882 cut-off events. For 3201/3201 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5569 event pairs, 78 based on Foata normal form. 26/882 useless extension candidates. Maximal degree in co-relation 3100. Up to 256 conditions per place. [2024-01-31 16:43:57,049 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 38 selfloop transitions, 7 changer transitions 28/85 dead transitions. [2024-01-31 16:43:57,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 85 transitions, 718 flow [2024-01-31 16:43:57,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:43:57,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:43:57,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 218 transitions. [2024-01-31 16:43:57,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.545 [2024-01-31 16:43:57,051 INFO L175 Difference]: Start difference. First operand has 77 places, 40 transitions, 291 flow. Second operand 10 states and 218 transitions. [2024-01-31 16:43:57,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 85 transitions, 718 flow [2024-01-31 16:43:57,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 85 transitions, 544 flow, removed 41 selfloop flow, removed 15 redundant places. [2024-01-31 16:43:57,058 INFO L231 Difference]: Finished difference. Result has 77 places, 41 transitions, 260 flow [2024-01-31 16:43:57,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=260, PETRI_PLACES=77, PETRI_TRANSITIONS=41} [2024-01-31 16:43:57,059 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 33 predicate places. [2024-01-31 16:43:57,059 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 41 transitions, 260 flow [2024-01-31 16:43:57,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:43:57,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:57,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:43:57,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 16:43:57,060 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:43:57,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:57,060 INFO L85 PathProgramCache]: Analyzing trace with hash -471330670, now seen corresponding path program 1 times [2024-01-31 16:43:57,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:57,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557795122] [2024-01-31 16:43:57,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:57,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:57,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:43:57,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:57,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557795122] [2024-01-31 16:43:57,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557795122] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:57,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:57,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:43:57,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160459286] [2024-01-31 16:43:57,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:57,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:43:57,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:57,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:43:57,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:43:57,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-01-31 16:43:57,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 41 transitions, 260 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:43:57,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:57,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-01-31 16:43:57,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:57,369 INFO L124 PetriNetUnfolderBase]: 406/860 cut-off events. [2024-01-31 16:43:57,369 INFO L125 PetriNetUnfolderBase]: For 2030/2030 co-relation queries the response was YES. [2024-01-31 16:43:57,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2732 conditions, 860 events. 406/860 cut-off events. For 2030/2030 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5396 event pairs, 70 based on Foata normal form. 20/855 useless extension candidates. Maximal degree in co-relation 2700. Up to 160 conditions per place. [2024-01-31 16:43:57,373 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 30 selfloop transitions, 5 changer transitions 31/78 dead transitions. [2024-01-31 16:43:57,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 78 transitions, 552 flow [2024-01-31 16:43:57,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:43:57,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:43:57,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-01-31 16:43:57,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56875 [2024-01-31 16:43:57,374 INFO L175 Difference]: Start difference. First operand has 77 places, 41 transitions, 260 flow. Second operand 8 states and 182 transitions. [2024-01-31 16:43:57,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 78 transitions, 552 flow [2024-01-31 16:43:57,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 78 transitions, 494 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-01-31 16:43:57,379 INFO L231 Difference]: Finished difference. Result has 71 places, 33 transitions, 157 flow [2024-01-31 16:43:57,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=157, PETRI_PLACES=71, PETRI_TRANSITIONS=33} [2024-01-31 16:43:57,380 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 27 predicate places. [2024-01-31 16:43:57,381 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 33 transitions, 157 flow [2024-01-31 16:43:57,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:43:57,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:57,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:43:57,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 16:43:57,382 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:43:57,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:57,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1952704944, now seen corresponding path program 2 times [2024-01-31 16:43:57,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:57,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104512599] [2024-01-31 16:43:57,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:57,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:57,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:43:57,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:57,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104512599] [2024-01-31 16:43:57,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104512599] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:57,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:57,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:43:57,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896512749] [2024-01-31 16:43:57,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:57,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:43:57,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:57,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:43:57,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:43:57,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 40 [2024-01-31 16:43:57,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 33 transitions, 157 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:43:57,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:57,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 40 [2024-01-31 16:43:57,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:57,574 INFO L124 PetriNetUnfolderBase]: 282/556 cut-off events. [2024-01-31 16:43:57,575 INFO L125 PetriNetUnfolderBase]: For 212/217 co-relation queries the response was YES. [2024-01-31 16:43:57,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1198 conditions, 556 events. 282/556 cut-off events. For 212/217 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2751 event pairs, 126 based on Foata normal form. 27/549 useless extension candidates. Maximal degree in co-relation 1180. Up to 261 conditions per place. [2024-01-31 16:43:57,576 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 21 selfloop transitions, 4 changer transitions 4/46 dead transitions. [2024-01-31 16:43:57,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 46 transitions, 243 flow [2024-01-31 16:43:57,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:43:57,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:43:57,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-01-31 16:43:57,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.74375 [2024-01-31 16:43:57,578 INFO L175 Difference]: Start difference. First operand has 71 places, 33 transitions, 157 flow. Second operand 4 states and 119 transitions. [2024-01-31 16:43:57,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 46 transitions, 243 flow [2024-01-31 16:43:57,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 46 transitions, 177 flow, removed 8 selfloop flow, removed 19 redundant places. [2024-01-31 16:43:57,579 INFO L231 Difference]: Finished difference. Result has 53 places, 35 transitions, 119 flow [2024-01-31 16:43:57,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=53, PETRI_TRANSITIONS=35} [2024-01-31 16:43:57,580 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 9 predicate places. [2024-01-31 16:43:57,580 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 35 transitions, 119 flow [2024-01-31 16:43:57,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:43:57,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:57,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:43:57,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 16:43:57,581 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:43:57,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:57,581 INFO L85 PathProgramCache]: Analyzing trace with hash 247491373, now seen corresponding path program 1 times [2024-01-31 16:43:57,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:57,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981607861] [2024-01-31 16:43:57,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:57,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:57,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:43:57,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:57,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981607861] [2024-01-31 16:43:57,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981607861] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:57,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:57,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:43:57,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329257624] [2024-01-31 16:43:57,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:57,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:43:57,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:57,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:43:57,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:43:57,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 40 [2024-01-31 16:43:57,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 35 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:43:57,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:57,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 40 [2024-01-31 16:43:57,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:57,710 INFO L124 PetriNetUnfolderBase]: 202/425 cut-off events. [2024-01-31 16:43:57,711 INFO L125 PetriNetUnfolderBase]: For 151/211 co-relation queries the response was YES. [2024-01-31 16:43:57,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1013 conditions, 425 events. 202/425 cut-off events. For 151/211 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1935 event pairs, 22 based on Foata normal form. 27/432 useless extension candidates. Maximal degree in co-relation 1004. Up to 161 conditions per place. [2024-01-31 16:43:57,712 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 20 selfloop transitions, 6 changer transitions 8/51 dead transitions. [2024-01-31 16:43:57,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 51 transitions, 236 flow [2024-01-31 16:43:57,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:43:57,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:43:57,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2024-01-31 16:43:57,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.73 [2024-01-31 16:43:57,714 INFO L175 Difference]: Start difference. First operand has 53 places, 35 transitions, 119 flow. Second operand 5 states and 146 transitions. [2024-01-31 16:43:57,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 51 transitions, 236 flow [2024-01-31 16:43:57,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 51 transitions, 227 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-31 16:43:57,715 INFO L231 Difference]: Finished difference. Result has 57 places, 35 transitions, 137 flow [2024-01-31 16:43:57,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=137, PETRI_PLACES=57, PETRI_TRANSITIONS=35} [2024-01-31 16:43:57,716 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 13 predicate places. [2024-01-31 16:43:57,716 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 35 transitions, 137 flow [2024-01-31 16:43:57,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:43:57,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:57,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:43:57,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 16:43:57,716 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:43:57,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:57,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1105278070, now seen corresponding path program 1 times [2024-01-31 16:43:57,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:57,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817530859] [2024-01-31 16:43:57,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:57,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:57,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:43:57,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:57,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817530859] [2024-01-31 16:43:57,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817530859] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:57,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:57,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:43:57,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2330318] [2024-01-31 16:43:57,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:57,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:43:57,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:57,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:43:57,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:43:57,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 40 [2024-01-31 16:43:57,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 35 transitions, 137 flow. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:43:57,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:57,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 40 [2024-01-31 16:43:57,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:57,885 INFO L124 PetriNetUnfolderBase]: 80/171 cut-off events. [2024-01-31 16:43:57,885 INFO L125 PetriNetUnfolderBase]: For 175/206 co-relation queries the response was YES. [2024-01-31 16:43:57,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 465 conditions, 171 events. 80/171 cut-off events. For 175/206 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 498 event pairs, 2 based on Foata normal form. 16/180 useless extension candidates. Maximal degree in co-relation 455. Up to 56 conditions per place. [2024-01-31 16:43:57,886 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2024-01-31 16:43:57,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 43 transitions, 214 flow [2024-01-31 16:43:57,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:43:57,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:43:57,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2024-01-31 16:43:57,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2024-01-31 16:43:57,887 INFO L175 Difference]: Start difference. First operand has 57 places, 35 transitions, 137 flow. Second operand 6 states and 164 transitions. [2024-01-31 16:43:57,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 43 transitions, 214 flow [2024-01-31 16:43:57,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 43 transitions, 192 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-01-31 16:43:57,888 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2024-01-31 16:43:57,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2024-01-31 16:43:57,889 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 7 predicate places. [2024-01-31 16:43:57,889 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2024-01-31 16:43:57,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:43:57,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 5 remaining) [2024-01-31 16:43:57,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-01-31 16:43:57,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-01-31 16:43:57,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-01-31 16:43:57,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2024-01-31 16:43:57,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-31 16:43:57,893 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:43:57,895 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-31 16:43:57,895 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 16:43:57,898 INFO L503 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-01-31 16:43:57,898 INFO L504 ceAbstractionStarter]: WitnessConsidered=1 [2024-01-31 16:43:57,899 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:43:57 BasicIcfg [2024-01-31 16:43:57,899 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 16:43:57,900 INFO L158 Benchmark]: Toolchain (without parser) took 6176.67ms. Allocated memory was 117.4MB in the beginning and 293.6MB in the end (delta: 176.2MB). Free memory was 58.3MB in the beginning and 143.7MB in the end (delta: -85.5MB). Peak memory consumption was 92.7MB. Max. memory is 16.1GB. [2024-01-31 16:43:57,900 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 92.3MB. Free memory is still 50.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:43:57,900 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 117.4MB. Free memory is still 74.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:43:57,900 INFO L158 Benchmark]: CACSL2BoogieTranslator took 746.39ms. Allocated memory was 117.4MB in the beginning and 151.0MB in the end (delta: 33.6MB). Free memory was 58.3MB in the beginning and 87.9MB in the end (delta: -29.7MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2024-01-31 16:43:57,901 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.17ms. Allocated memory is still 151.0MB. Free memory was 87.9MB in the beginning and 85.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 16:43:57,901 INFO L158 Benchmark]: Boogie Preprocessor took 69.42ms. Allocated memory is still 151.0MB. Free memory was 85.8MB in the beginning and 83.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 16:43:57,901 INFO L158 Benchmark]: RCFGBuilder took 442.16ms. Allocated memory is still 151.0MB. Free memory was 83.7MB in the beginning and 61.7MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-01-31 16:43:57,901 INFO L158 Benchmark]: TraceAbstraction took 4852.77ms. Allocated memory was 151.0MB in the beginning and 293.6MB in the end (delta: 142.6MB). Free memory was 60.7MB in the beginning and 143.7MB in the end (delta: -83.1MB). Peak memory consumption was 60.6MB. Max. memory is 16.1GB. [2024-01-31 16:43:57,902 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.17ms. Allocated memory is still 92.3MB. Free memory is still 50.9MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.15ms. Allocated memory is still 117.4MB. Free memory is still 74.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 746.39ms. Allocated memory was 117.4MB in the beginning and 151.0MB in the end (delta: 33.6MB). Free memory was 58.3MB in the beginning and 87.9MB in the end (delta: -29.7MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.17ms. Allocated memory is still 151.0MB. Free memory was 87.9MB in the beginning and 85.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.42ms. Allocated memory is still 151.0MB. Free memory was 85.8MB in the beginning and 83.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 442.16ms. Allocated memory is still 151.0MB. Free memory was 83.7MB in the beginning and 61.7MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 4852.77ms. Allocated memory was 151.0MB in the beginning and 293.6MB in the end (delta: 142.6MB). Free memory was 60.7MB in the beginning and 143.7MB in the end (delta: -83.1MB). Peak memory consumption was 60.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 64 locations, 5 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: 4.7s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 601 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 548 mSDsluCounter, 411 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 304 mSDsCounter, 80 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1118 IncrementalHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 80 mSolverCounterUnsat, 107 mSDtfsCounter, 1118 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=427occurred in iteration=6, InterpolantAutomatonStates: 87, 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, 1.4s InterpolantComputationTime, 244 NumberOfCodeBlocks, 244 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 232 ConstructedInterpolants, 0 QuantifiedInterpolants, 932 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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! [2024-01-31 16:43:57,927 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