./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/bench-exp3x3.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/bench-exp3x3.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/bench-exp3x3.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/bench-exp3x3.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 16:46:05,782 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:46:05,849 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:46:05,854 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:46:05,854 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:46:05,874 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:46:05,875 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:46:05,875 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:46:05,876 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:46:05,879 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:46:05,879 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:46:05,879 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:46:05,880 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:46:05,881 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:46:05,881 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:46:05,882 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:46:05,882 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:46:05,882 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:46:05,882 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:46:05,882 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:46:05,883 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:46:05,884 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:46:05,884 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:46:05,884 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:46:05,885 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:46:05,885 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:46:05,885 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:46:05,885 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:46:05,886 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:46:05,886 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:46:05,887 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:46:05,887 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:46:05,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:46:05,887 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:46:05,887 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:46:05,888 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:46:05,888 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:46:05,888 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:46:05,888 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:46:05,888 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:46:05,888 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:46:05,889 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:46:05,889 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:46:05,889 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:46:06,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:46:06,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:46:06,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:46:06,158 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:46:06,158 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:46:06,159 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c [2024-01-31 16:46:07,250 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:46:07,419 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:46:07,419 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c [2024-01-31 16:46:07,425 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97dbdf7a2/01a427b885644b2c85556883b9a24112/FLAGd95be758a [2024-01-31 16:46:07,435 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97dbdf7a2/01a427b885644b2c85556883b9a24112 [2024-01-31 16:46:07,437 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:46:07,437 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:46:07,439 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/bench-exp3x3.wvr.yml/witness.yml [2024-01-31 16:46:07,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:46:07,511 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:46:07,512 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:46:07,512 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:46:07,516 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:46:07,519 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:46:07" (1/2) ... [2024-01-31 16:46:07,520 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fd60fee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:46:07, skipping insertion in model container [2024-01-31 16:46:07,520 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:46:07" (1/2) ... [2024-01-31 16:46:07,521 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6675a0fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:46:07, skipping insertion in model container [2024-01-31 16:46:07,522 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:46:07" (2/2) ... [2024-01-31 16:46:07,522 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fd60fee and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:46:07, skipping insertion in model container [2024-01-31 16:46:07,522 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:46:07" (2/2) ... [2024-01-31 16:46:07,522 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:46:07,563 INFO L93 nessWitnessExtractor]: Witness did not contain any usable entries. [2024-01-31 16:46:07,581 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:46:07,749 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/bench-exp3x3.wvr.c[2703,2716] [2024-01-31 16:46:07,752 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:46:07,770 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:46:07,806 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/bench-exp3x3.wvr.c[2703,2716] [2024-01-31 16:46:07,807 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:46:07,828 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:46:07,828 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:46:07 WrapperNode [2024-01-31 16:46:07,828 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:46:07,829 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:46:07,829 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:46:07,830 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:46:07,835 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 04:46:07" (1/1) ... [2024-01-31 16:46:07,852 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 04:46:07" (1/1) ... [2024-01-31 16:46:07,882 INFO L138 Inliner]: procedures = 22, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 131 [2024-01-31 16:46:07,882 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:46:07,883 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:46:07,883 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:46:07,883 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:46:07,892 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 04:46:07" (1/1) ... [2024-01-31 16:46:07,892 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 04:46:07" (1/1) ... [2024-01-31 16:46:07,907 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 04:46:07" (1/1) ... [2024-01-31 16:46:07,924 INFO L175 MemorySlicer]: Split 14 memory accesses to 7 slices as follows [2, 2, 2, 2, 2, 2, 2]. 14 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 1, 1, 1, 1]. [2024-01-31 16:46:07,931 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 04:46:07" (1/1) ... [2024-01-31 16:46:07,931 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 04:46:07" (1/1) ... [2024-01-31 16:46:07,941 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 04:46:07" (1/1) ... [2024-01-31 16:46:07,951 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 04:46:07" (1/1) ... [2024-01-31 16:46:07,955 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 04:46:07" (1/1) ... [2024-01-31 16:46:07,960 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 04:46:07" (1/1) ... [2024-01-31 16:46:07,962 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:46:07,963 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:46:07,963 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:46:07,963 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:46:07,964 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 04:46:07" (1/1) ... [2024-01-31 16:46:07,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:46:07,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:46:07,992 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 16:46:08,008 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 16:46:08,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:46:08,031 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 16:46:08,031 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 16:46:08,031 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 16:46:08,032 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 16:46:08,032 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 16:46:08,032 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 16:46:08,032 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-31 16:46:08,032 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-31 16:46:08,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:46:08,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:46:08,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:46:08,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:46:08,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 16:46:08,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-31 16:46:08,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-01-31 16:46:08,034 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-01-31 16:46:08,035 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-01-31 16:46:08,035 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-01-31 16:46:08,036 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-01-31 16:46:08,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:46:08,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:46:08,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:46:08,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:46:08,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:46:08,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 16:46:08,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-31 16:46:08,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-01-31 16:46:08,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:46:08,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:46:08,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:46:08,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:46:08,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:46:08,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 16:46:08,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 16:46:08,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-31 16:46:08,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-01-31 16:46:08,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:46:08,040 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 16:46:08,172 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:46:08,175 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:46:08,482 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:46:08,482 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:46:08,636 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:46:08,640 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-01-31 16:46:08,640 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:46:08 BoogieIcfgContainer [2024-01-31 16:46:08,640 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:46:08,642 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:46:08,642 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:46:08,646 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:46:08,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:46:07" (1/4) ... [2024-01-31 16:46:08,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d55aad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:46:08, skipping insertion in model container [2024-01-31 16:46:08,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:46:07" (2/4) ... [2024-01-31 16:46:08,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d55aad and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:46:08, skipping insertion in model container [2024-01-31 16:46:08,648 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 04:46:07" (3/4) ... [2024-01-31 16:46:08,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d55aad and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:46:08, skipping insertion in model container [2024-01-31 16:46:08,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:46:08" (4/4) ... [2024-01-31 16:46:08,650 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3.wvr.c [2024-01-31 16:46:08,664 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:46:08,664 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 16:46:08,664 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:46:08,739 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2024-01-31 16:46:08,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 51 transitions, 144 flow [2024-01-31 16:46:08,806 INFO L124 PetriNetUnfolderBase]: 6/45 cut-off events. [2024-01-31 16:46:08,807 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-31 16:46:08,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 45 events. 6/45 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-01-31 16:46:08,810 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 51 transitions, 144 flow [2024-01-31 16:46:08,812 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 44 transitions, 124 flow [2024-01-31 16:46:08,818 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:46:08,823 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;@1a981b6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:46:08,823 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-01-31 16:46:08,834 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:46:08,834 INFO L124 PetriNetUnfolderBase]: 6/43 cut-off events. [2024-01-31 16:46:08,835 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-31 16:46:08,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:08,835 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:08,836 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 4 more)] === [2024-01-31 16:46:08,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:08,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1410993307, now seen corresponding path program 1 times [2024-01-31 16:46:08,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:08,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956041831] [2024-01-31 16:46:08,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:08,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:09,457 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 16:46:09,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:09,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956041831] [2024-01-31 16:46:09,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956041831] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:09,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:09,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:46:09,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725495994] [2024-01-31 16:46:09,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:09,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:46:09,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:09,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:46:09,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:46:09,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-01-31 16:46:09,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:09,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:09,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-01-31 16:46:09,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:11,125 INFO L124 PetriNetUnfolderBase]: 21341/24683 cut-off events. [2024-01-31 16:46:11,125 INFO L125 PetriNetUnfolderBase]: For 1387/1387 co-relation queries the response was YES. [2024-01-31 16:46:11,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50579 conditions, 24683 events. 21341/24683 cut-off events. For 1387/1387 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 79585 event pairs, 1773 based on Foata normal form. 1/13573 useless extension candidates. Maximal degree in co-relation 38647. Up to 23405 conditions per place. [2024-01-31 16:46:11,343 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 63 selfloop transitions, 7 changer transitions 1/78 dead transitions. [2024-01-31 16:46:11,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 78 transitions, 367 flow [2024-01-31 16:46:11,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:46:11,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:46:11,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-01-31 16:46:11,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7254901960784313 [2024-01-31 16:46:11,354 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 124 flow. Second operand 3 states and 111 transitions. [2024-01-31 16:46:11,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 78 transitions, 367 flow [2024-01-31 16:46:11,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 78 transitions, 321 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-01-31 16:46:11,374 INFO L231 Difference]: Finished difference. Result has 48 places, 50 transitions, 147 flow [2024-01-31 16:46:11,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=48, PETRI_TRANSITIONS=50} [2024-01-31 16:46:11,380 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -9 predicate places. [2024-01-31 16:46:11,380 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 50 transitions, 147 flow [2024-01-31 16:46:11,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:11,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:11,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:11,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:46:11,382 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 4 more)] === [2024-01-31 16:46:11,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:11,384 INFO L85 PathProgramCache]: Analyzing trace with hash -220257736, now seen corresponding path program 1 times [2024-01-31 16:46:11,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:11,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6295304] [2024-01-31 16:46:11,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:11,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:11,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:11,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:11,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6295304] [2024-01-31 16:46:11,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6295304] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:11,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:11,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:46:11,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042997108] [2024-01-31 16:46:11,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:11,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:46:11,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:11,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:46:11,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:46:11,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-01-31 16:46:11,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 50 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:11,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:11,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-01-31 16:46:11,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:13,482 INFO L124 PetriNetUnfolderBase]: 27899/32452 cut-off events. [2024-01-31 16:46:13,486 INFO L125 PetriNetUnfolderBase]: For 8359/8359 co-relation queries the response was YES. [2024-01-31 16:46:13,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80549 conditions, 32452 events. 27899/32452 cut-off events. For 8359/8359 co-relation queries the response was YES. Maximal size of possible extension queue 969. Compared 114556 event pairs, 1893 based on Foata normal form. 294/32674 useless extension candidates. Maximal degree in co-relation 21818. Up to 14321 conditions per place. [2024-01-31 16:46:13,659 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 116 selfloop transitions, 10 changer transitions 0/133 dead transitions. [2024-01-31 16:46:13,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 133 transitions, 635 flow [2024-01-31 16:46:13,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:46:13,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:46:13,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 181 transitions. [2024-01-31 16:46:13,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7098039215686275 [2024-01-31 16:46:13,665 INFO L175 Difference]: Start difference. First operand has 48 places, 50 transitions, 147 flow. Second operand 5 states and 181 transitions. [2024-01-31 16:46:13,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 133 transitions, 635 flow [2024-01-31 16:46:13,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 133 transitions, 623 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:46:13,670 INFO L231 Difference]: Finished difference. Result has 53 places, 57 transitions, 205 flow [2024-01-31 16:46:13,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=205, PETRI_PLACES=53, PETRI_TRANSITIONS=57} [2024-01-31 16:46:13,671 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -4 predicate places. [2024-01-31 16:46:13,671 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 57 transitions, 205 flow [2024-01-31 16:46:13,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:13,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:13,671 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:13,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:46:13,672 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 4 more)] === [2024-01-31 16:46:13,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:13,674 INFO L85 PathProgramCache]: Analyzing trace with hash 378951248, now seen corresponding path program 2 times [2024-01-31 16:46:13,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:13,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775560679] [2024-01-31 16:46:13,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:13,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:13,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:13,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:13,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775560679] [2024-01-31 16:46:13,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775560679] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:13,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:13,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:46:13,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438691133] [2024-01-31 16:46:13,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:13,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:46:13,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:13,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:46:13,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:46:13,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-01-31 16:46:13,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 57 transitions, 205 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:13,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:13,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-01-31 16:46:13,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:15,568 INFO L124 PetriNetUnfolderBase]: 26725/31324 cut-off events. [2024-01-31 16:46:15,568 INFO L125 PetriNetUnfolderBase]: For 20110/20110 co-relation queries the response was YES. [2024-01-31 16:46:15,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88446 conditions, 31324 events. 26725/31324 cut-off events. For 20110/20110 co-relation queries the response was YES. Maximal size of possible extension queue 957. Compared 114310 event pairs, 5591 based on Foata normal form. 646/31688 useless extension candidates. Maximal degree in co-relation 24190. Up to 16295 conditions per place. [2024-01-31 16:46:15,722 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 114 selfloop transitions, 10 changer transitions 0/131 dead transitions. [2024-01-31 16:46:15,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 131 transitions, 670 flow [2024-01-31 16:46:15,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:46:15,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:46:15,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 181 transitions. [2024-01-31 16:46:15,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7098039215686275 [2024-01-31 16:46:15,724 INFO L175 Difference]: Start difference. First operand has 53 places, 57 transitions, 205 flow. Second operand 5 states and 181 transitions. [2024-01-31 16:46:15,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 131 transitions, 670 flow [2024-01-31 16:46:15,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 131 transitions, 670 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 16:46:15,732 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 259 flow [2024-01-31 16:46:15,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=259, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2024-01-31 16:46:15,733 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 2 predicate places. [2024-01-31 16:46:15,733 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 259 flow [2024-01-31 16:46:15,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:15,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:15,733 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:15,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:46:15,734 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 4 more)] === [2024-01-31 16:46:15,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:15,734 INFO L85 PathProgramCache]: Analyzing trace with hash -475165545, now seen corresponding path program 1 times [2024-01-31 16:46:15,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:15,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645834954] [2024-01-31 16:46:15,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:15,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:15,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:15,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:15,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645834954] [2024-01-31 16:46:15,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645834954] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:15,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:15,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:46:15,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717499676] [2024-01-31 16:46:15,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:15,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:46:15,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:15,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:46:15,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:46:15,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-01-31 16:46:15,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 259 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:15,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:15,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-01-31 16:46:15,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:17,590 INFO L124 PetriNetUnfolderBase]: 26767/31320 cut-off events. [2024-01-31 16:46:17,590 INFO L125 PetriNetUnfolderBase]: For 37517/37517 co-relation queries the response was YES. [2024-01-31 16:46:17,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94394 conditions, 31320 events. 26767/31320 cut-off events. For 37517/37517 co-relation queries the response was YES. Maximal size of possible extension queue 958. Compared 115042 event pairs, 2135 based on Foata normal form. 486/31734 useless extension candidates. Maximal degree in co-relation 47609. Up to 13835 conditions per place. [2024-01-31 16:46:17,784 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 119 selfloop transitions, 8 changer transitions 0/134 dead transitions. [2024-01-31 16:46:17,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 134 transitions, 718 flow [2024-01-31 16:46:17,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:46:17,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:46:17,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 180 transitions. [2024-01-31 16:46:17,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7058823529411765 [2024-01-31 16:46:17,787 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 259 flow. Second operand 5 states and 180 transitions. [2024-01-31 16:46:17,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 134 transitions, 718 flow [2024-01-31 16:46:17,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 134 transitions, 709 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-01-31 16:46:17,862 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 264 flow [2024-01-31 16:46:17,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=264, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2024-01-31 16:46:17,863 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 6 predicate places. [2024-01-31 16:46:17,863 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 264 flow [2024-01-31 16:46:17,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:17,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:17,864 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:17,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:46:17,865 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 4 more)] === [2024-01-31 16:46:17,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:17,866 INFO L85 PathProgramCache]: Analyzing trace with hash -652827620, now seen corresponding path program 1 times [2024-01-31 16:46:17,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:17,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829314154] [2024-01-31 16:46:17,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:17,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:17,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:17,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:17,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829314154] [2024-01-31 16:46:17,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829314154] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:17,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:17,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:46:17,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291787543] [2024-01-31 16:46:17,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:17,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:46:17,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:17,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:46:17,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:46:17,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-01-31 16:46:17,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 264 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:17,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:17,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-01-31 16:46:17,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:20,285 INFO L124 PetriNetUnfolderBase]: 36005/42951 cut-off events. [2024-01-31 16:46:20,285 INFO L125 PetriNetUnfolderBase]: For 70354/70354 co-relation queries the response was YES. [2024-01-31 16:46:20,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135319 conditions, 42951 events. 36005/42951 cut-off events. For 70354/70354 co-relation queries the response was YES. Maximal size of possible extension queue 1416. Compared 176142 event pairs, 5689 based on Foata normal form. 912/43537 useless extension candidates. Maximal degree in co-relation 67525. Up to 20703 conditions per place. [2024-01-31 16:46:20,561 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 150 selfloop transitions, 8 changer transitions 0/165 dead transitions. [2024-01-31 16:46:20,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 165 transitions, 1104 flow [2024-01-31 16:46:20,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:46:20,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:46:20,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 183 transitions. [2024-01-31 16:46:20,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7176470588235294 [2024-01-31 16:46:20,562 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 264 flow. Second operand 5 states and 183 transitions. [2024-01-31 16:46:20,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 165 transitions, 1104 flow [2024-01-31 16:46:20,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 165 transitions, 1077 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-01-31 16:46:20,589 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 310 flow [2024-01-31 16:46:20,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=310, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2024-01-31 16:46:20,590 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 12 predicate places. [2024-01-31 16:46:20,590 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 310 flow [2024-01-31 16:46:20,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:20,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:20,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:20,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:46:20,591 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 4 more)] === [2024-01-31 16:46:20,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:20,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1110861684, now seen corresponding path program 2 times [2024-01-31 16:46:20,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:20,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657082440] [2024-01-31 16:46:20,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:20,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:20,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:20,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:20,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657082440] [2024-01-31 16:46:20,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657082440] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:20,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:20,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:46:20,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785968450] [2024-01-31 16:46:20,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:20,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:46:20,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:20,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:46:20,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:46:20,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-01-31 16:46:20,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 310 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:20,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:20,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-01-31 16:46:20,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:22,819 INFO L124 PetriNetUnfolderBase]: 31831/37763 cut-off events. [2024-01-31 16:46:22,819 INFO L125 PetriNetUnfolderBase]: For 70501/70501 co-relation queries the response was YES. [2024-01-31 16:46:22,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135032 conditions, 37763 events. 31831/37763 cut-off events. For 70501/70501 co-relation queries the response was YES. Maximal size of possible extension queue 1229. Compared 146904 event pairs, 2108 based on Foata normal form. 488/38141 useless extension candidates. Maximal degree in co-relation 85477. Up to 16759 conditions per place. [2024-01-31 16:46:23,218 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 150 selfloop transitions, 11 changer transitions 0/168 dead transitions. [2024-01-31 16:46:23,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 168 transitions, 1170 flow [2024-01-31 16:46:23,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:46:23,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:46:23,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 177 transitions. [2024-01-31 16:46:23,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6941176470588235 [2024-01-31 16:46:23,219 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 310 flow. Second operand 5 states and 177 transitions. [2024-01-31 16:46:23,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 168 transitions, 1170 flow [2024-01-31 16:46:23,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 168 transitions, 1170 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 16:46:23,409 INFO L231 Difference]: Finished difference. Result has 74 places, 69 transitions, 371 flow [2024-01-31 16:46:23,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=371, PETRI_PLACES=74, PETRI_TRANSITIONS=69} [2024-01-31 16:46:23,411 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 17 predicate places. [2024-01-31 16:46:23,411 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 69 transitions, 371 flow [2024-01-31 16:46:23,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:23,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:23,412 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:23,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:46:23,412 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 4 more)] === [2024-01-31 16:46:23,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:23,413 INFO L85 PathProgramCache]: Analyzing trace with hash -652809612, now seen corresponding path program 1 times [2024-01-31 16:46:23,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:23,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029356917] [2024-01-31 16:46:23,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:23,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:23,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:23,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:23,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029356917] [2024-01-31 16:46:23,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029356917] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:46:23,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196220956] [2024-01-31 16:46:23,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:23,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:46:23,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:46:23,501 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:46:23,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-31 16:46:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:23,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-31 16:46:23,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:46:23,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:23,855 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:46:23,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:23,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196220956] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:46:23,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:46:23,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-01-31 16:46:23,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049594486] [2024-01-31 16:46:23,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:46:23,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:46:23,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:23,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:46:23,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:46:23,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-01-31 16:46:23,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 69 transitions, 371 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 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 16:46:23,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:23,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-01-31 16:46:23,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:26,888 INFO L124 PetriNetUnfolderBase]: 41941/50812 cut-off events. [2024-01-31 16:46:26,888 INFO L125 PetriNetUnfolderBase]: For 141163/141163 co-relation queries the response was YES. [2024-01-31 16:46:27,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198148 conditions, 50812 events. 41941/50812 cut-off events. For 141163/141163 co-relation queries the response was YES. Maximal size of possible extension queue 1819. Compared 226803 event pairs, 6487 based on Foata normal form. 976/51130 useless extension candidates. Maximal degree in co-relation 123320. Up to 22832 conditions per place. [2024-01-31 16:46:27,279 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 179 selfloop transitions, 8 changer transitions 0/194 dead transitions. [2024-01-31 16:46:27,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 194 transitions, 1495 flow [2024-01-31 16:46:27,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:46:27,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:46:27,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2024-01-31 16:46:27,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6862745098039216 [2024-01-31 16:46:27,281 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 371 flow. Second operand 5 states and 175 transitions. [2024-01-31 16:46:27,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 194 transitions, 1495 flow [2024-01-31 16:46:27,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 194 transitions, 1455 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-01-31 16:46:27,359 INFO L231 Difference]: Finished difference. Result has 80 places, 74 transitions, 413 flow [2024-01-31 16:46:27,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=413, PETRI_PLACES=80, PETRI_TRANSITIONS=74} [2024-01-31 16:46:27,360 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 23 predicate places. [2024-01-31 16:46:27,360 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 74 transitions, 413 flow [2024-01-31 16:46:27,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 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 16:46:27,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:27,360 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:27,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-01-31 16:46:27,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:46:27,566 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 4 more)] === [2024-01-31 16:46:27,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:27,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1837170805, now seen corresponding path program 1 times [2024-01-31 16:46:27,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:27,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426609100] [2024-01-31 16:46:27,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:27,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:27,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:27,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:27,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426609100] [2024-01-31 16:46:27,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426609100] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:27,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:27,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:46:27,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534888932] [2024-01-31 16:46:27,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:27,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:46:27,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:27,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:46:27,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:46:27,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-01-31 16:46:27,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 74 transitions, 413 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:27,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:27,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-01-31 16:46:27,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:30,650 INFO L124 PetriNetUnfolderBase]: 41233/49732 cut-off events. [2024-01-31 16:46:30,650 INFO L125 PetriNetUnfolderBase]: For 144650/144722 co-relation queries the response was YES. [2024-01-31 16:46:30,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213196 conditions, 49732 events. 41233/49732 cut-off events. For 144650/144722 co-relation queries the response was YES. Maximal size of possible extension queue 1777. Compared 219244 event pairs, 2323 based on Foata normal form. 720/50346 useless extension candidates. Maximal degree in co-relation 132714. Up to 22481 conditions per place. [2024-01-31 16:46:31,084 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 171 selfloop transitions, 8 changer transitions 0/186 dead transitions. [2024-01-31 16:46:31,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 186 transitions, 1409 flow [2024-01-31 16:46:31,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:46:31,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:46:31,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 176 transitions. [2024-01-31 16:46:31,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6901960784313725 [2024-01-31 16:46:31,086 INFO L175 Difference]: Start difference. First operand has 80 places, 74 transitions, 413 flow. Second operand 5 states and 176 transitions. [2024-01-31 16:46:31,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 186 transitions, 1409 flow [2024-01-31 16:46:31,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 186 transitions, 1409 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 16:46:31,652 INFO L231 Difference]: Finished difference. Result has 85 places, 73 transitions, 429 flow [2024-01-31 16:46:31,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=429, PETRI_PLACES=85, PETRI_TRANSITIONS=73} [2024-01-31 16:46:31,653 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 28 predicate places. [2024-01-31 16:46:31,653 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 73 transitions, 429 flow [2024-01-31 16:46:31,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:31,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:31,654 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:31,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 16:46:31,654 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 4 more)] === [2024-01-31 16:46:31,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:31,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1276107868, now seen corresponding path program 2 times [2024-01-31 16:46:31,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:31,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382227761] [2024-01-31 16:46:31,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:31,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:31,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:31,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:31,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:31,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382227761] [2024-01-31 16:46:31,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382227761] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:31,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:31,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:46:31,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833909167] [2024-01-31 16:46:31,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:31,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:46:31,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:31,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:46:31,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:46:31,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-01-31 16:46:31,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 73 transitions, 429 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:31,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:31,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-01-31 16:46:31,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:34,361 INFO L124 PetriNetUnfolderBase]: 36869/44596 cut-off events. [2024-01-31 16:46:34,361 INFO L125 PetriNetUnfolderBase]: For 150999/150999 co-relation queries the response was YES. [2024-01-31 16:46:34,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196519 conditions, 44596 events. 36869/44596 cut-off events. For 150999/150999 co-relation queries the response was YES. Maximal size of possible extension queue 1570. Compared 190594 event pairs, 2389 based on Foata normal form. 484/44722 useless extension candidates. Maximal degree in co-relation 122566. Up to 19552 conditions per place. [2024-01-31 16:46:34,746 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 182 selfloop transitions, 11 changer transitions 0/200 dead transitions. [2024-01-31 16:46:34,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 200 transitions, 1642 flow [2024-01-31 16:46:34,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:46:34,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:46:34,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 173 transitions. [2024-01-31 16:46:34,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6784313725490196 [2024-01-31 16:46:34,748 INFO L175 Difference]: Start difference. First operand has 85 places, 73 transitions, 429 flow. Second operand 5 states and 173 transitions. [2024-01-31 16:46:34,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 200 transitions, 1642 flow [2024-01-31 16:46:35,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 200 transitions, 1605 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-01-31 16:46:35,397 INFO L231 Difference]: Finished difference. Result has 89 places, 78 transitions, 479 flow [2024-01-31 16:46:35,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=479, PETRI_PLACES=89, PETRI_TRANSITIONS=78} [2024-01-31 16:46:35,398 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 32 predicate places. [2024-01-31 16:46:35,398 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 78 transitions, 479 flow [2024-01-31 16:46:35,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:35,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:35,399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:35,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 16:46:35,399 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 4 more)] === [2024-01-31 16:46:35,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:35,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1909840435, now seen corresponding path program 1 times [2024-01-31 16:46:35,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:35,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481357508] [2024-01-31 16:46:35,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:35,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:35,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:35,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:35,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481357508] [2024-01-31 16:46:35,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481357508] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:35,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:35,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:46:35,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710625807] [2024-01-31 16:46:35,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:35,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:46:35,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:35,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:46:35,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:46:35,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-01-31 16:46:35,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 78 transitions, 479 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:35,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:35,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-01-31 16:46:35,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand