./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-node-trans.wvr.c --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/chl-node-trans.wvr.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/weaver/chl-node-trans.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/chl-node-trans.wvr.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 16:49:06,398 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:49:06,453 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:49:06,459 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:49:06,459 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:49:06,481 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:49:06,485 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:49:06,485 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:49:06,486 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:49:06,489 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:49:06,489 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:49:06,489 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:49:06,490 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:49:06,491 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:49:06,491 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:49:06,492 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:49:06,492 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:49:06,492 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:49:06,492 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:49:06,492 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:49:06,493 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:49:06,493 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:49:06,493 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:49:06,493 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:49:06,494 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:49:06,494 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:49:06,494 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:49:06,494 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:49:06,495 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:49:06,495 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:49:06,496 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:49:06,496 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:49:06,496 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:49:06,496 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:49:06,497 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:49:06,497 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:49:06,497 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:49:06,497 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:49:06,497 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:49:06,498 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:49:06,498 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:49:06,498 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:49:06,498 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:49:06,498 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:49:06,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:49:06,744 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:49:06,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:49:06,747 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:49:06,747 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:49:06,748 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-trans.wvr.c [2024-01-31 16:49:07,728 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:49:07,963 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:49:07,964 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-trans.wvr.c [2024-01-31 16:49:07,975 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91e294be8/f88f03cf319643f19bd311fd1578a36b/FLAG9a8447c0a [2024-01-31 16:49:07,987 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91e294be8/f88f03cf319643f19bd311fd1578a36b [2024-01-31 16:49:07,989 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:49:07,989 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:49:07,990 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/chl-node-trans.wvr.yml/witness.yml [2024-01-31 16:49:08,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:49:08,147 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:49:08,148 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:49:08,148 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:49:08,152 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:49:08,153 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:49:07" (1/2) ... [2024-01-31 16:49:08,155 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26eb15a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:49:08, skipping insertion in model container [2024-01-31 16:49:08,155 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:49:07" (1/2) ... [2024-01-31 16:49:08,157 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3c12dd4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:49:08, skipping insertion in model container [2024-01-31 16:49:08,157 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:49:08" (2/2) ... [2024-01-31 16:49:08,157 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26eb15a4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:49:08, skipping insertion in model container [2024-01-31 16:49:08,158 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:49:08" (2/2) ... [2024-01-31 16:49:08,158 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:49:08,226 INFO L93 nessWitnessExtractor]: Witness did not contain any usable entries. [2024-01-31 16:49:08,253 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:49:08,427 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-trans.wvr.c[3984,3997] [2024-01-31 16:49:08,441 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:49:08,453 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:49:08,480 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-trans.wvr.c[3984,3997] [2024-01-31 16:49:08,484 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:49:08,495 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:49:08,503 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:49:08 WrapperNode [2024-01-31 16:49:08,503 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:49:08,505 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:49:08,505 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:49:08,505 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:49:08,510 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:49:08" (1/1) ... [2024-01-31 16:49:08,518 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:49:08" (1/1) ... [2024-01-31 16:49:08,543 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 439 [2024-01-31 16:49:08,543 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:49:08,544 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:49:08,544 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:49:08,544 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:49:08,558 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:49:08" (1/1) ... [2024-01-31 16:49:08,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:49:08" (1/1) ... [2024-01-31 16:49:08,562 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:49:08" (1/1) ... [2024-01-31 16:49:08,578 INFO L175 MemorySlicer]: Split 32 memory accesses to 6 slices as follows [2, 9, 15, 2, 2, 2]. 47 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 9 writes are split as follows [0, 3, 3, 1, 1, 1]. [2024-01-31 16:49:08,578 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:49:08" (1/1) ... [2024-01-31 16:49:08,579 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:49:08" (1/1) ... [2024-01-31 16:49:08,598 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:49:08" (1/1) ... [2024-01-31 16:49:08,606 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:49:08" (1/1) ... [2024-01-31 16:49:08,616 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:49:08" (1/1) ... [2024-01-31 16:49:08,617 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:49:08" (1/1) ... [2024-01-31 16:49:08,621 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:49:08,621 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:49:08,623 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:49:08,623 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:49:08,626 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:49:08" (1/1) ... [2024-01-31 16:49:08,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:49:08,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:49:08,665 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 16:49:08,672 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 16:49:08,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:49:08,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:49:08,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:49:08,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:49:08,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:49:08,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:49:08,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 16:49:08,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-31 16:49:08,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:49:08,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:49:08,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:49:08,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 16:49:08,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 16:49:08,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-31 16:49:08,703 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 16:49:08,704 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 16:49:08,704 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 16:49:08,704 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 16:49:08,704 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 16:49:08,705 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 16:49:08,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:49:08,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:49:08,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:49:08,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:49:08,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 16:49:08,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-31 16:49:08,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-31 16:49:08,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:49:08,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:49:08,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:49:08,708 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 16:49:08,862 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:49:08,864 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:49:09,399 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:49:09,400 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:49:09,754 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:49:09,755 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-01-31 16:49:09,755 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:49:09 BoogieIcfgContainer [2024-01-31 16:49:09,755 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:49:09,757 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:49:09,757 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:49:09,759 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:49:09,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:49:07" (1/4) ... [2024-01-31 16:49:09,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c7c9f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:49:09, skipping insertion in model container [2024-01-31 16:49:09,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:49:08" (2/4) ... [2024-01-31 16:49:09,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c7c9f9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:49:09, skipping insertion in model container [2024-01-31 16:49:09,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:49:08" (3/4) ... [2024-01-31 16:49:09,761 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c7c9f9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:49:09, skipping insertion in model container [2024-01-31 16:49:09,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:49:09" (4/4) ... [2024-01-31 16:49:09,762 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-trans.wvr.c [2024-01-31 16:49:09,777 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:49:09,777 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 16:49:09,777 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:49:09,827 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-31 16:49:09,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 33 transitions, 87 flow [2024-01-31 16:49:09,872 INFO L124 PetriNetUnfolderBase]: 6/30 cut-off events. [2024-01-31 16:49:09,872 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 16:49:09,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 30 events. 6/30 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-01-31 16:49:09,875 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 33 transitions, 87 flow [2024-01-31 16:49:09,877 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 29 transitions, 76 flow [2024-01-31 16:49:09,884 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:49:09,889 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;@74a562e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:49:09,890 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-31 16:49:09,901 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:49:09,902 INFO L124 PetriNetUnfolderBase]: 6/28 cut-off events. [2024-01-31 16:49:09,902 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 16:49:09,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:49:09,903 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 16:49:09,903 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:49:09,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:49:09,907 INFO L85 PathProgramCache]: Analyzing trace with hash -2116894792, now seen corresponding path program 1 times [2024-01-31 16:49:09,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:49:09,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892024635] [2024-01-31 16:49:09,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:49:09,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:49:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:49:10,353 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 16:49:10,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:49:10,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892024635] [2024-01-31 16:49:10,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892024635] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:49:10,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:49:10,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:49:10,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518685619] [2024-01-31 16:49:10,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:49:10,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:49:10,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:49:10,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:49:10,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:49:10,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-01-31 16:49:10,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:49:10,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:49:10,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-01-31 16:49:10,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:49:10,483 INFO L124 PetriNetUnfolderBase]: 43/94 cut-off events. [2024-01-31 16:49:10,483 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-01-31 16:49:10,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 94 events. 43/94 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 157 event pairs, 37 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 120. Up to 93 conditions per place. [2024-01-31 16:49:10,486 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 27 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2024-01-31 16:49:10,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 30 transitions, 136 flow [2024-01-31 16:49:10,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:49:10,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:49:10,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2024-01-31 16:49:10,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-01-31 16:49:10,498 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 76 flow. Second operand 3 states and 42 transitions. [2024-01-31 16:49:10,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 30 transitions, 136 flow [2024-01-31 16:49:10,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 30 transitions, 124 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:49:10,503 INFO L231 Difference]: Finished difference. Result has 30 places, 30 transitions, 76 flow [2024-01-31 16:49:10,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=30, PETRI_TRANSITIONS=30} [2024-01-31 16:49:10,507 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -3 predicate places. [2024-01-31 16:49:10,508 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 30 transitions, 76 flow [2024-01-31 16:49:10,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:49:10,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:49:10,508 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] [2024-01-31 16:49:10,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:49:10,509 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:49:10,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:49:10,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1090888647, now seen corresponding path program 1 times [2024-01-31 16:49:10,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:49:10,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333163285] [2024-01-31 16:49:10,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:49:10,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:49:10,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:49:10,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 16:49:10,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:49:10,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333163285] [2024-01-31 16:49:10,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333163285] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:49:10,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:49:10,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:49:10,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722167142] [2024-01-31 16:49:10,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:49:10,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:49:10,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:49:10,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:49:10,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:49:10,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-01-31 16:49:10,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 30 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 16:49:10,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:49:10,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-01-31 16:49:10,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:49:10,839 INFO L124 PetriNetUnfolderBase]: 43/95 cut-off events. [2024-01-31 16:49:10,839 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 16:49:10,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 95 events. 43/95 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 158 event pairs, 37 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 194. Up to 92 conditions per place. [2024-01-31 16:49:10,840 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 26 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2024-01-31 16:49:10,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 31 transitions, 138 flow [2024-01-31 16:49:10,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:49:10,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:49:10,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 47 transitions. [2024-01-31 16:49:10,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560606060606061 [2024-01-31 16:49:10,842 INFO L175 Difference]: Start difference. First operand has 30 places, 30 transitions, 76 flow. Second operand 4 states and 47 transitions. [2024-01-31 16:49:10,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 31 transitions, 138 flow [2024-01-31 16:49:10,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 134 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-31 16:49:10,844 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 90 flow [2024-01-31 16:49:10,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2024-01-31 16:49:10,845 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2024-01-31 16:49:10,845 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 90 flow [2024-01-31 16:49:10,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 16:49:10,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:49:10,845 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 16:49:10,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:49:10,846 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:49:10,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:49:10,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1040159414, now seen corresponding path program 1 times [2024-01-31 16:49:10,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:49:10,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142541432] [2024-01-31 16:49:10,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:49:10,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:49:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:49:10,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 16:49:10,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:49:10,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142541432] [2024-01-31 16:49:10,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142541432] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:49:10,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:49:10,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:49:10,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320559830] [2024-01-31 16:49:10,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:49:10,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:49:10,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:49:10,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:49:10,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:49:10,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-01-31 16:49:10,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 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 16:49:10,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:49:10,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-01-31 16:49:10,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:49:11,071 INFO L124 PetriNetUnfolderBase]: 43/96 cut-off events. [2024-01-31 16:49:11,072 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 16:49:11,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 96 events. 43/96 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 158 event pairs, 37 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 194. Up to 93 conditions per place. [2024-01-31 16:49:11,073 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 27 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2024-01-31 16:49:11,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 32 transitions, 154 flow [2024-01-31 16:49:11,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:49:11,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:49:11,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 47 transitions. [2024-01-31 16:49:11,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560606060606061 [2024-01-31 16:49:11,075 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 90 flow. Second operand 4 states and 47 transitions. [2024-01-31 16:49:11,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 32 transitions, 154 flow [2024-01-31 16:49:11,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 32 transitions, 153 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:49:11,077 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 107 flow [2024-01-31 16:49:11,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=107, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2024-01-31 16:49:11,077 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2024-01-31 16:49:11,078 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 107 flow [2024-01-31 16:49:11,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 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 16:49:11,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:49:11,078 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] [2024-01-31 16:49:11,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:49:11,079 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:49:11,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:49:11,079 INFO L85 PathProgramCache]: Analyzing trace with hash 280772917, now seen corresponding path program 1 times [2024-01-31 16:49:11,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:49:11,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674065996] [2024-01-31 16:49:11,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:49:11,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:49:11,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:49:11,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 16:49:11,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:49:11,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674065996] [2024-01-31 16:49:11,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674065996] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:49:11,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:49:11,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:49:11,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784532908] [2024-01-31 16:49:11,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:49:11,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:49:11,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:49:11,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:49:11,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:49:11,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-01-31 16:49:11,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 107 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 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 16:49:11,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:49:11,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-01-31 16:49:11,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:49:11,311 INFO L124 PetriNetUnfolderBase]: 43/97 cut-off events. [2024-01-31 16:49:11,311 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 16:49:11,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 97 events. 43/97 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 158 event pairs, 37 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 201. Up to 95 conditions per place. [2024-01-31 16:49:11,312 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 29 selfloop transitions, 3 changer transitions 0/33 dead transitions. [2024-01-31 16:49:11,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 33 transitions, 173 flow [2024-01-31 16:49:11,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:49:11,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:49:11,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 46 transitions. [2024-01-31 16:49:11,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-01-31 16:49:11,313 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 107 flow. Second operand 4 states and 46 transitions. [2024-01-31 16:49:11,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 33 transitions, 173 flow [2024-01-31 16:49:11,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 33 transitions, 169 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:49:11,315 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 117 flow [2024-01-31 16:49:11,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=117, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2024-01-31 16:49:11,316 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2024-01-31 16:49:11,316 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 117 flow [2024-01-31 16:49:11,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 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 16:49:11,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:49:11,317 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 16:49:11,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:49:11,317 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:49:11,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:49:11,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1710746048, now seen corresponding path program 1 times [2024-01-31 16:49:11,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:49:11,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85572211] [2024-01-31 16:49:11,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:49:11,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:49:11,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:49:11,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-01-31 16:49:11,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:49:11,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85572211] [2024-01-31 16:49:11,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85572211] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:49:11,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:49:11,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:49:11,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412378809] [2024-01-31 16:49:11,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:49:11,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:49:11,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:49:11,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:49:11,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:49:11,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-01-31 16:49:11,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 117 flow. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 16:49:11,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:49:11,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-01-31 16:49:11,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:49:11,491 INFO L124 PetriNetUnfolderBase]: 43/98 cut-off events. [2024-01-31 16:49:11,491 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 16:49:11,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 98 events. 43/98 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 158 event pairs, 37 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 207. Up to 96 conditions per place. [2024-01-31 16:49:11,492 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 30 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2024-01-31 16:49:11,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 185 flow [2024-01-31 16:49:11,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:49:11,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:49:11,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 46 transitions. [2024-01-31 16:49:11,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-01-31 16:49:11,493 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 117 flow. Second operand 4 states and 46 transitions. [2024-01-31 16:49:11,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 185 flow [2024-01-31 16:49:11,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 179 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-31 16:49:11,494 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 125 flow [2024-01-31 16:49:11,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=125, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2024-01-31 16:49:11,495 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2024-01-31 16:49:11,495 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 125 flow [2024-01-31 16:49:11,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 16:49:11,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:49:11,495 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, 1] [2024-01-31 16:49:11,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:49:11,495 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:49:11,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:49:11,496 INFO L85 PathProgramCache]: Analyzing trace with hash 640459193, now seen corresponding path program 1 times [2024-01-31 16:49:11,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:49:11,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224244943] [2024-01-31 16:49:11,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:49:11,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:49:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:49:11,643 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-01-31 16:49:11,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:49:11,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224244943] [2024-01-31 16:49:11,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224244943] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:49:11,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:49:11,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:49:11,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485694225] [2024-01-31 16:49:11,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:49:11,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:49:11,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:49:11,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:49:11,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:49:11,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-01-31 16:49:11,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 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 16:49:11,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:49:11,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-01-31 16:49:11,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:49:11,714 INFO L124 PetriNetUnfolderBase]: 43/99 cut-off events. [2024-01-31 16:49:11,715 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-01-31 16:49:11,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 99 events. 43/99 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 158 event pairs, 37 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 212. Up to 97 conditions per place. [2024-01-31 16:49:11,716 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 31 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2024-01-31 16:49:11,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 35 transitions, 195 flow [2024-01-31 16:49:11,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:49:11,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:49:11,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 46 transitions. [2024-01-31 16:49:11,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-01-31 16:49:11,717 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 125 flow. Second operand 4 states and 46 transitions. [2024-01-31 16:49:11,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 35 transitions, 195 flow [2024-01-31 16:49:11,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 35 transitions, 189 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-31 16:49:11,719 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 133 flow [2024-01-31 16:49:11,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2024-01-31 16:49:11,720 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2024-01-31 16:49:11,720 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 133 flow [2024-01-31 16:49:11,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 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 16:49:11,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:49:11,720 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, 1, 1] [2024-01-31 16:49:11,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:49:11,721 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:49:11,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:49:11,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1328166592, now seen corresponding path program 1 times [2024-01-31 16:49:11,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:49:11,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191107468] [2024-01-31 16:49:11,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:49:11,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:49:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:49:12,603 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:49:12,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:49:12,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191107468] [2024-01-31 16:49:12,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191107468] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:49:12,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:49:12,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:49:12,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093169559] [2024-01-31 16:49:12,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:49:12,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:49:12,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:49:12,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:49:12,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:49:12,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-01-31 16:49:12,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 133 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 16:49:12,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:49:12,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-01-31 16:49:12,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:49:12,810 INFO L124 PetriNetUnfolderBase]: 46/126 cut-off events. [2024-01-31 16:49:12,810 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-01-31 16:49:12,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 126 events. 46/126 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 355 event pairs, 7 based on Foata normal form. 1/126 useless extension candidates. Maximal degree in co-relation 269. Up to 48 conditions per place. [2024-01-31 16:49:12,811 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 46 selfloop transitions, 2 changer transitions 9/58 dead transitions. [2024-01-31 16:49:12,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 302 flow [2024-01-31 16:49:12,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:49:12,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:49:12,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-01-31 16:49:12,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2024-01-31 16:49:12,813 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 133 flow. Second operand 5 states and 72 transitions. [2024-01-31 16:49:12,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 302 flow [2024-01-31 16:49:12,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 58 transitions, 296 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-31 16:49:12,815 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 142 flow [2024-01-31 16:49:12,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=142, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2024-01-31 16:49:12,815 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2024-01-31 16:49:12,815 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 142 flow [2024-01-31 16:49:12,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 16:49:12,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:49:12,816 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, 1, 1] [2024-01-31 16:49:12,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 16:49:12,816 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:49:12,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:49:12,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1687535278, now seen corresponding path program 2 times [2024-01-31 16:49:12,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:49:12,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674589070] [2024-01-31 16:49:12,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:49:12,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:49:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:49:13,389 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:49:13,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:49:13,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674589070] [2024-01-31 16:49:13,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674589070] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:49:13,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:49:13,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:49:13,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680706693] [2024-01-31 16:49:13,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:49:13,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:49:13,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:49:13,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:49:13,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:49:13,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-01-31 16:49:13,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 142 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 16:49:13,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:49:13,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-01-31 16:49:13,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:49:13,583 INFO L124 PetriNetUnfolderBase]: 40/131 cut-off events. [2024-01-31 16:49:13,583 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2024-01-31 16:49:13,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 364 conditions, 131 events. 40/131 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 386 event pairs, 11 based on Foata normal form. 1/131 useless extension candidates. Maximal degree in co-relation 340. Up to 54 conditions per place. [2024-01-31 16:49:13,584 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 46 selfloop transitions, 3 changer transitions 7/57 dead transitions. [2024-01-31 16:49:13,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 57 transitions, 314 flow [2024-01-31 16:49:13,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:49:13,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:49:13,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 70 transitions. [2024-01-31 16:49:13,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-01-31 16:49:13,585 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 142 flow. Second operand 5 states and 70 transitions. [2024-01-31 16:49:13,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 57 transitions, 314 flow [2024-01-31 16:49:13,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 57 transitions, 307 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-31 16:49:13,587 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 159 flow [2024-01-31 16:49:13,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=159, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2024-01-31 16:49:13,587 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 18 predicate places. [2024-01-31 16:49:13,587 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 159 flow [2024-01-31 16:49:13,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 16:49:13,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:49:13,588 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, 1, 1] [2024-01-31 16:49:13,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 16:49:13,588 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:49:13,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:49:13,588 INFO L85 PathProgramCache]: Analyzing trace with hash 406040312, now seen corresponding path program 3 times [2024-01-31 16:49:13,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:49:13,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159776666] [2024-01-31 16:49:13,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:49:13,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:49:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:49:14,334 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:49:14,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:49:14,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159776666] [2024-01-31 16:49:14,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159776666] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:49:14,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:49:14,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:49:14,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802886880] [2024-01-31 16:49:14,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:49:14,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:49:14,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:49:14,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:49:14,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:49:14,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-01-31 16:49:14,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 159 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 16:49:14,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:49:14,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-01-31 16:49:14,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:49:14,492 INFO L124 PetriNetUnfolderBase]: 41/136 cut-off events. [2024-01-31 16:49:14,493 INFO L125 PetriNetUnfolderBase]: For 210/210 co-relation queries the response was YES. [2024-01-31 16:49:14,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438 conditions, 136 events. 41/136 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 450 event pairs, 10 based on Foata normal form. 1/136 useless extension candidates. Maximal degree in co-relation 412. Up to 62 conditions per place. [2024-01-31 16:49:14,494 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 44 selfloop transitions, 2 changer transitions 11/58 dead transitions. [2024-01-31 16:49:14,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 342 flow [2024-01-31 16:49:14,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:49:14,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:49:14,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 70 transitions. [2024-01-31 16:49:14,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-01-31 16:49:14,495 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 159 flow. Second operand 5 states and 70 transitions. [2024-01-31 16:49:14,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 342 flow [2024-01-31 16:49:14,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 331 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-01-31 16:49:14,497 INFO L231 Difference]: Finished difference. Result has 55 places, 37 transitions, 166 flow [2024-01-31 16:49:14,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=166, PETRI_PLACES=55, PETRI_TRANSITIONS=37} [2024-01-31 16:49:14,497 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 22 predicate places. [2024-01-31 16:49:14,498 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 37 transitions, 166 flow [2024-01-31 16:49:14,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 16:49:14,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:49:14,498 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, 1, 1] [2024-01-31 16:49:14,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 16:49:14,498 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:49:14,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:49:14,499 INFO L85 PathProgramCache]: Analyzing trace with hash 748792976, now seen corresponding path program 4 times [2024-01-31 16:49:14,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:49:14,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378965512] [2024-01-31 16:49:14,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:49:14,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:49:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:49:15,057 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:49:15,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:49:15,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378965512] [2024-01-31 16:49:15,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378965512] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:49:15,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:49:15,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:49:15,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336907473] [2024-01-31 16:49:15,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:49:15,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:49:15,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:49:15,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:49:15,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:49:15,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-01-31 16:49:15,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 37 transitions, 166 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 16:49:15,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:49:15,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-01-31 16:49:15,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:49:15,190 INFO L124 PetriNetUnfolderBase]: 34/114 cut-off events. [2024-01-31 16:49:15,190 INFO L125 PetriNetUnfolderBase]: For 306/306 co-relation queries the response was YES. [2024-01-31 16:49:15,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406 conditions, 114 events. 34/114 cut-off events. For 306/306 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 283 event pairs, 16 based on Foata normal form. 1/114 useless extension candidates. Maximal degree in co-relation 382. Up to 70 conditions per place. [2024-01-31 16:49:15,191 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 46 selfloop transitions, 3 changer transitions 9/59 dead transitions. [2024-01-31 16:49:15,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 59 transitions, 362 flow [2024-01-31 16:49:15,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:49:15,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:49:15,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 70 transitions. [2024-01-31 16:49:15,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-01-31 16:49:15,193 INFO L175 Difference]: Start difference. First operand has 55 places, 37 transitions, 166 flow. Second operand 5 states and 70 transitions. [2024-01-31 16:49:15,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 59 transitions, 362 flow [2024-01-31 16:49:15,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 59 transitions, 343 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-01-31 16:49:15,195 INFO L231 Difference]: Finished difference. Result has 57 places, 37 transitions, 173 flow [2024-01-31 16:49:15,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=173, PETRI_PLACES=57, PETRI_TRANSITIONS=37} [2024-01-31 16:49:15,197 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 24 predicate places. [2024-01-31 16:49:15,197 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 37 transitions, 173 flow [2024-01-31 16:49:15,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 16:49:15,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:49:15,198 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, 1, 1] [2024-01-31 16:49:15,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 16:49:15,198 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:49:15,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:49:15,199 INFO L85 PathProgramCache]: Analyzing trace with hash 556351292, now seen corresponding path program 5 times [2024-01-31 16:49:15,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:49:15,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969863619] [2024-01-31 16:49:15,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:49:15,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:49:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:49:15,790 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:49:15,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:49:15,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969863619] [2024-01-31 16:49:15,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969863619] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:49:15,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:49:15,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:49:15,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579602054] [2024-01-31 16:49:15,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:49:15,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:49:15,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:49:15,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:49:15,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:49:15,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-01-31 16:49:15,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 37 transitions, 173 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 16:49:15,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:49:15,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-01-31 16:49:15,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:49:15,923 INFO L124 PetriNetUnfolderBase]: 27/88 cut-off events. [2024-01-31 16:49:15,924 INFO L125 PetriNetUnfolderBase]: For 215/215 co-relation queries the response was YES. [2024-01-31 16:49:15,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 88 events. 27/88 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 173 event pairs, 7 based on Foata normal form. 1/88 useless extension candidates. Maximal degree in co-relation 315. Up to 47 conditions per place. [2024-01-31 16:49:15,925 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 36 selfloop transitions, 1 changer transitions 18/56 dead transitions. [2024-01-31 16:49:15,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 56 transitions, 335 flow [2024-01-31 16:49:15,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:49:15,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:49:15,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 69 transitions. [2024-01-31 16:49:15,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-01-31 16:49:15,926 INFO L175 Difference]: Start difference. First operand has 57 places, 37 transitions, 173 flow. Second operand 5 states and 69 transitions. [2024-01-31 16:49:15,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 56 transitions, 335 flow [2024-01-31 16:49:15,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 56 transitions, 323 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-01-31 16:49:15,928 INFO L231 Difference]: Finished difference. Result has 58 places, 35 transitions, 152 flow [2024-01-31 16:49:15,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=152, PETRI_PLACES=58, PETRI_TRANSITIONS=35} [2024-01-31 16:49:15,929 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 25 predicate places. [2024-01-31 16:49:15,929 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 35 transitions, 152 flow [2024-01-31 16:49:15,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 16:49:15,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:49:15,929 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, 1, 1] [2024-01-31 16:49:15,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 16:49:15,930 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:49:15,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:49:15,930 INFO L85 PathProgramCache]: Analyzing trace with hash 833827354, now seen corresponding path program 6 times [2024-01-31 16:49:15,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:49:15,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139355154] [2024-01-31 16:49:15,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:49:15,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:49:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:49:16,401 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:49:16,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:49:16,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139355154] [2024-01-31 16:49:16,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139355154] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:49:16,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:49:16,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:49:16,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298973148] [2024-01-31 16:49:16,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:49:16,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:49:16,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:49:16,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:49:16,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:49:16,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-01-31 16:49:16,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 35 transitions, 152 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 16:49:16,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:49:16,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-01-31 16:49:16,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:49:16,508 INFO L124 PetriNetUnfolderBase]: 16/56 cut-off events. [2024-01-31 16:49:16,508 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2024-01-31 16:49:16,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 56 events. 16/56 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 5 based on Foata normal form. 1/56 useless extension candidates. Maximal degree in co-relation 197. Up to 39 conditions per place. [2024-01-31 16:49:16,508 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 0 selfloop transitions, 0 changer transitions 41/41 dead transitions. [2024-01-31 16:49:16,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 41 transitions, 252 flow [2024-01-31 16:49:16,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:49:16,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:49:16,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 56 transitions. [2024-01-31 16:49:16,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-01-31 16:49:16,509 INFO L175 Difference]: Start difference. First operand has 58 places, 35 transitions, 152 flow. Second operand 5 states and 56 transitions. [2024-01-31 16:49:16,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 41 transitions, 252 flow [2024-01-31 16:49:16,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 41 transitions, 234 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-01-31 16:49:16,510 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2024-01-31 16:49:16,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2024-01-31 16:49:16,511 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2024-01-31 16:49:16,511 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2024-01-31 16:49:16,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 16:49:16,513 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-01-31 16:49:16,514 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-01-31 16:49:16,514 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-01-31 16:49:16,514 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-01-31 16:49:16,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-31 16:49:16,514 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1] [2024-01-31 16:49:16,517 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-31 16:49:16,517 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 16:49:16,520 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:49:16 BasicIcfg [2024-01-31 16:49:16,521 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 16:49:16,521 INFO L158 Benchmark]: Toolchain (without parser) took 8374.64ms. Allocated memory was 119.5MB in the beginning and 591.4MB in the end (delta: 471.9MB). Free memory was 76.6MB in the beginning and 363.5MB in the end (delta: -286.9MB). Peak memory consumption was 186.9MB. Max. memory is 16.1GB. [2024-01-31 16:49:16,521 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 119.5MB. Free memory was 90.8MB in the beginning and 90.8MB in the end (delta: 28.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:49:16,521 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 119.5MB. Free memory is still 89.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:49:16,522 INFO L158 Benchmark]: CACSL2BoogieTranslator took 356.09ms. Allocated memory is still 119.5MB. Free memory was 76.6MB in the beginning and 52.4MB in the end (delta: 24.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-01-31 16:49:16,522 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.61ms. Allocated memory is still 119.5MB. Free memory was 52.4MB in the beginning and 49.0MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-31 16:49:16,522 INFO L158 Benchmark]: Boogie Preprocessor took 76.87ms. Allocated memory is still 119.5MB. Free memory was 49.0MB in the beginning and 90.1MB in the end (delta: -41.1MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2024-01-31 16:49:16,522 INFO L158 Benchmark]: RCFGBuilder took 1134.05ms. Allocated memory was 119.5MB in the beginning and 153.1MB in the end (delta: 33.6MB). Free memory was 90.0MB in the beginning and 89.1MB in the end (delta: 913.2kB). Peak memory consumption was 73.4MB. Max. memory is 16.1GB. [2024-01-31 16:49:16,523 INFO L158 Benchmark]: TraceAbstraction took 6763.97ms. Allocated memory was 153.1MB in the beginning and 591.4MB in the end (delta: 438.3MB). Free memory was 88.1MB in the beginning and 363.5MB in the end (delta: -275.4MB). Peak memory consumption was 162.9MB. Max. memory is 16.1GB. [2024-01-31 16:49:16,524 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 119.5MB. Free memory was 90.8MB in the beginning and 90.8MB in the end (delta: 28.4kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 119.5MB. Free memory is still 89.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 356.09ms. Allocated memory is still 119.5MB. Free memory was 76.6MB in the beginning and 52.4MB in the end (delta: 24.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.61ms. Allocated memory is still 119.5MB. Free memory was 52.4MB in the beginning and 49.0MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.87ms. Allocated memory is still 119.5MB. Free memory was 49.0MB in the beginning and 90.1MB in the end (delta: -41.1MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1134.05ms. Allocated memory was 119.5MB in the beginning and 153.1MB in the end (delta: 33.6MB). Free memory was 90.0MB in the beginning and 89.1MB in the end (delta: 913.2kB). Peak memory consumption was 73.4MB. Max. memory is 16.1GB. * TraceAbstraction took 6763.97ms. Allocated memory was 153.1MB in the beginning and 591.4MB in the end (delta: 438.3MB). Free memory was 88.1MB in the beginning and 363.5MB in the end (delta: -275.4MB). Peak memory consumption was 162.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 109]: 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, 37 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.7s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 227 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 227 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1168 IncrementalHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 0 mSDtfsCounter, 1168 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=173occurred in iteration=10, InterpolantAutomatonStates: 53, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 327 NumberOfCodeBlocks, 327 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 315 ConstructedInterpolants, 0 QuantifiedInterpolants, 1853 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 51/51 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-31 16:49:16,547 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