./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/test-easy10.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/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/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/test-easy10.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 21:44:45,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 21:44:45,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 21:44:45,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 21:44:45,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 21:44:45,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 21:44:45,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 21:44:45,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 21:44:45,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 21:44:45,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 21:44:45,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 21:44:45,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 21:44:45,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 21:44:45,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 21:44:45,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 21:44:45,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 21:44:45,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 21:44:45,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 21:44:45,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 21:44:45,984 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 21:44:45,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 21:44:45,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 21:44:45,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 21:44:45,988 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 21:44:45,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 21:44:45,995 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 21:44:45,995 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 21:44:45,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 21:44:45,999 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 21:44:46,000 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 21:44:46,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 21:44:46,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 21:44:46,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 21:44:46,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 21:44:46,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 21:44:46,005 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 21:44:46,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 21:44:46,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 21:44:46,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 21:44:46,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 21:44:46,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 21:44:46,009 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 21:44:46,041 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 21:44:46,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 21:44:46,043 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 21:44:46,043 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 21:44:46,044 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 21:44:46,044 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 21:44:46,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 21:44:46,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 21:44:46,045 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 21:44:46,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 21:44:46,046 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 21:44:46,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 21:44:46,046 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 21:44:46,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 21:44:46,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 21:44:46,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 21:44:46,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 21:44:46,047 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 21:44:46,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 21:44:46,047 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 21:44:46,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 21:44:46,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 21:44:46,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 21:44:46,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 21:44:46,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 21:44:46,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 21:44:46,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 21:44:46,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 21:44:46,051 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 21:44:46,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 21:44:46,051 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 21:44:46,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 21:44:46,052 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 21:44:46,052 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 21:44:46,052 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 21:44:46,052 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 21:44:46,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 21:44:46,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 21:44:46,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 21:44:46,352 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 21:44:46,352 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 21:44:46,354 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy10.wvr.c [2023-08-30 21:44:47,592 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 21:44:47,795 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 21:44:47,796 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy10.wvr.c [2023-08-30 21:44:47,802 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bc252df1/9a2844708cc64bc6b3b5b7edd64a9780/FLAG51044b226 [2023-08-30 21:44:47,814 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bc252df1/9a2844708cc64bc6b3b5b7edd64a9780 [2023-08-30 21:44:47,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 21:44:47,816 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 21:44:47,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 21:44:47,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 21:44:47,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 21:44:47,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:44:47" (1/1) ... [2023-08-30 21:44:47,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31d36670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:44:47, skipping insertion in model container [2023-08-30 21:44:47,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:44:47" (1/1) ... [2023-08-30 21:44:47,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 21:44:47,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 21:44:47,978 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy10.wvr.c[3907,3920] [2023-08-30 21:44:47,982 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 21:44:47,995 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 21:44:48,042 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy10.wvr.c[3907,3920] [2023-08-30 21:44:48,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 21:44:48,055 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 21:44:48,057 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 21:44:48,063 INFO L208 MainTranslator]: Completed translation [2023-08-30 21:44:48,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:44:48 WrapperNode [2023-08-30 21:44:48,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 21:44:48,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 21:44:48,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 21:44:48,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 21:44:48,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:44:48" (1/1) ... [2023-08-30 21:44:48,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:44:48" (1/1) ... [2023-08-30 21:44:48,125 INFO L138 Inliner]: procedures = 23, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 192 [2023-08-30 21:44:48,126 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 21:44:48,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 21:44:48,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 21:44:48,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 21:44:48,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:44:48" (1/1) ... [2023-08-30 21:44:48,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:44:48" (1/1) ... [2023-08-30 21:44:48,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:44:48" (1/1) ... [2023-08-30 21:44:48,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:44:48" (1/1) ... [2023-08-30 21:44:48,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:44:48" (1/1) ... [2023-08-30 21:44:48,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:44:48" (1/1) ... [2023-08-30 21:44:48,166 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:44:48" (1/1) ... [2023-08-30 21:44:48,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:44:48" (1/1) ... [2023-08-30 21:44:48,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 21:44:48,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 21:44:48,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 21:44:48,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 21:44:48,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:44:48" (1/1) ... [2023-08-30 21:44:48,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 21:44:48,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:44:48,210 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 21:44:48,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 21:44:48,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 21:44:48,253 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 21:44:48,253 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 21:44:48,255 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 21:44:48,255 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 21:44:48,255 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 21:44:48,255 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 21:44:48,255 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 21:44:48,256 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 21:44:48,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 21:44:48,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 21:44:48,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 21:44:48,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 21:44:48,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 21:44:48,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 21:44:48,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 21:44:48,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 21:44:48,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 21:44:48,258 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 21:44:48,391 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 21:44:48,393 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 21:44:48,677 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 21:44:48,739 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 21:44:48,739 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 21:44:48,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:44:48 BoogieIcfgContainer [2023-08-30 21:44:48,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 21:44:48,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 21:44:48,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 21:44:48,750 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 21:44:48,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 09:44:47" (1/3) ... [2023-08-30 21:44:48,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d3e4af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:44:48, skipping insertion in model container [2023-08-30 21:44:48,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:44:48" (2/3) ... [2023-08-30 21:44:48,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d3e4af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:44:48, skipping insertion in model container [2023-08-30 21:44:48,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:44:48" (3/3) ... [2023-08-30 21:44:48,753 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2023-08-30 21:44:48,759 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 21:44:48,768 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 21:44:48,768 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 21:44:48,768 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 21:44:48,849 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 21:44:48,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 135 transitions, 302 flow [2023-08-30 21:44:49,037 INFO L130 PetriNetUnfolder]: 2/131 cut-off events. [2023-08-30 21:44:49,037 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 21:44:49,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 131 events. 2/131 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 76 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-08-30 21:44:49,048 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 135 transitions, 302 flow [2023-08-30 21:44:49,053 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 119 transitions, 262 flow [2023-08-30 21:44:49,058 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 21:44:49,073 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 119 transitions, 262 flow [2023-08-30 21:44:49,075 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 119 transitions, 262 flow [2023-08-30 21:44:49,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 119 transitions, 262 flow [2023-08-30 21:44:49,137 INFO L130 PetriNetUnfolder]: 2/119 cut-off events. [2023-08-30 21:44:49,138 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 21:44:49,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 119 events. 2/119 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 75 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-08-30 21:44:49,140 INFO L119 LiptonReduction]: Number of co-enabled transitions 1824 [2023-08-30 21:44:52,701 INFO L134 LiptonReduction]: Checked pairs total: 11399 [2023-08-30 21:44:52,701 INFO L136 LiptonReduction]: Total number of compositions: 86 [2023-08-30 21:44:52,715 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 21:44:52,721 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@500e4cef, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 21:44:52,721 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-30 21:44:52,733 INFO L130 PetriNetUnfolder]: 0/40 cut-off events. [2023-08-30 21:44:52,733 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 21:44:52,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:44:52,734 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, 1, 1] [2023-08-30 21:44:52,735 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 2 more)] === [2023-08-30 21:44:52,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:44:52,739 INFO L85 PathProgramCache]: Analyzing trace with hash 152339249, now seen corresponding path program 1 times [2023-08-30 21:44:52,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:44:52,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896996394] [2023-08-30 21:44:52,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:44:52,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:44:53,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:44:53,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:44:53,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:44:53,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896996394] [2023-08-30 21:44:53,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896996394] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:44:53,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 21:44:53,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 21:44:53,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813206683] [2023-08-30 21:44:53,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:44:53,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 21:44:53,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:44:53,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 21:44:53,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 21:44:53,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 221 [2023-08-30 21:44:53,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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) [2023-08-30 21:44:53,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:44:53,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 221 [2023-08-30 21:44:53,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:44:53,838 INFO L130 PetriNetUnfolder]: 665/1141 cut-off events. [2023-08-30 21:44:53,838 INFO L131 PetriNetUnfolder]: For 124/124 co-relation queries the response was YES. [2023-08-30 21:44:53,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2279 conditions, 1141 events. 665/1141 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6324 event pairs, 336 based on Foata normal form. 25/1139 useless extension candidates. Maximal degree in co-relation 2140. Up to 960 conditions per place. [2023-08-30 21:44:53,852 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 33 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-08-30 21:44:53,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 50 transitions, 200 flow [2023-08-30 21:44:53,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 21:44:53,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 21:44:53,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2023-08-30 21:44:53,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2023-08-30 21:44:53,867 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2023-08-30 21:44:53,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2023-08-30 21:44:53,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:44:53,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2023-08-30 21:44:53,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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) [2023-08-30 21:44:53,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 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) [2023-08-30 21:44:53,888 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 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) [2023-08-30 21:44:53,889 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 106 flow. Second operand 3 states and 390 transitions. [2023-08-30 21:44:53,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 50 transitions, 200 flow [2023-08-30 21:44:53,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 50 transitions, 180 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-30 21:44:53,899 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 98 flow [2023-08-30 21:44:53,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2023-08-30 21:44:53,905 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2023-08-30 21:44:53,906 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 98 flow [2023-08-30 21:44:53,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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) [2023-08-30 21:44:53,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:44:53,909 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, 1, 1] [2023-08-30 21:44:53,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 21:44:53,911 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 2 more)] === [2023-08-30 21:44:53,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:44:53,913 INFO L85 PathProgramCache]: Analyzing trace with hash -877069175, now seen corresponding path program 2 times [2023-08-30 21:44:53,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:44:53,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037135768] [2023-08-30 21:44:53,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:44:53,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:44:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:44:56,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:44:56,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:44:56,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037135768] [2023-08-30 21:44:56,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037135768] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:44:56,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 21:44:56,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 21:44:56,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222329682] [2023-08-30 21:44:56,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:44:56,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 21:44:56,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:44:56,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 21:44:56,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-08-30 21:44:56,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 221 [2023-08-30 21:44:56,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 98 flow. Second operand has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 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) [2023-08-30 21:44:56,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:44:56,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 221 [2023-08-30 21:44:56,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:44:59,940 INFO L130 PetriNetUnfolder]: 15827/23375 cut-off events. [2023-08-30 21:44:59,940 INFO L131 PetriNetUnfolder]: For 1313/1313 co-relation queries the response was YES. [2023-08-30 21:44:59,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47247 conditions, 23375 events. 15827/23375 cut-off events. For 1313/1313 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 150387 event pairs, 2555 based on Foata normal form. 1/23352 useless extension candidates. Maximal degree in co-relation 16328. Up to 7098 conditions per place. [2023-08-30 21:45:00,077 INFO L137 encePairwiseOnDemand]: 207/221 looper letters, 207 selfloop transitions, 15 changer transitions 16/242 dead transitions. [2023-08-30 21:45:00,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 242 transitions, 1028 flow [2023-08-30 21:45:00,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 21:45:00,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 21:45:00,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1527 transitions. [2023-08-30 21:45:00,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4935358758888171 [2023-08-30 21:45:00,085 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1527 transitions. [2023-08-30 21:45:00,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1527 transitions. [2023-08-30 21:45:00,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:45:00,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1527 transitions. [2023-08-30 21:45:00,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 109.07142857142857) internal successors, (1527), 14 states have internal predecessors, (1527), 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) [2023-08-30 21:45:00,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-08-30 21:45:00,098 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-08-30 21:45:00,098 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 98 flow. Second operand 14 states and 1527 transitions. [2023-08-30 21:45:00,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 242 transitions, 1028 flow [2023-08-30 21:45:00,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 242 transitions, 1024 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 21:45:00,107 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 220 flow [2023-08-30 21:45:00,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=220, PETRI_PLACES=73, PETRI_TRANSITIONS=56} [2023-08-30 21:45:00,108 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 19 predicate places. [2023-08-30 21:45:00,108 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 220 flow [2023-08-30 21:45:00,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 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) [2023-08-30 21:45:00,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:45:00,110 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, 1, 1] [2023-08-30 21:45:00,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 21:45:00,110 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 2 more)] === [2023-08-30 21:45:00,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:45:00,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1023457985, now seen corresponding path program 3 times [2023-08-30 21:45:00,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:45:00,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452489747] [2023-08-30 21:45:00,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:45:00,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:45:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:45:00,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:45:00,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:45:00,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452489747] [2023-08-30 21:45:00,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452489747] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:45:00,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 21:45:00,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 21:45:00,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497709005] [2023-08-30 21:45:00,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:45:00,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 21:45:00,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:45:00,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 21:45:00,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 21:45:00,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 221 [2023-08-30 21:45:00,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 56 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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) [2023-08-30 21:45:00,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:45:00,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 221 [2023-08-30 21:45:00,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:45:00,898 INFO L130 PetriNetUnfolder]: 3016/5386 cut-off events. [2023-08-30 21:45:00,899 INFO L131 PetriNetUnfolder]: For 5571/5649 co-relation queries the response was YES. [2023-08-30 21:45:00,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14798 conditions, 5386 events. 3016/5386 cut-off events. For 5571/5649 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 40027 event pairs, 713 based on Foata normal form. 74/5111 useless extension candidates. Maximal degree in co-relation 14761. Up to 4110 conditions per place. [2023-08-30 21:45:00,944 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 43 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-08-30 21:45:00,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 67 transitions, 347 flow [2023-08-30 21:45:00,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 21:45:00,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 21:45:00,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-08-30 21:45:00,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5912518853695324 [2023-08-30 21:45:00,946 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-08-30 21:45:00,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-08-30 21:45:00,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:45:00,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-08-30 21:45:00,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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) [2023-08-30 21:45:00,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 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) [2023-08-30 21:45:00,950 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 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) [2023-08-30 21:45:00,950 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 220 flow. Second operand 3 states and 392 transitions. [2023-08-30 21:45:00,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 67 transitions, 347 flow [2023-08-30 21:45:01,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 67 transitions, 339 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-30 21:45:01,010 INFO L231 Difference]: Finished difference. Result has 70 places, 54 transitions, 210 flow [2023-08-30 21:45:01,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=70, PETRI_TRANSITIONS=54} [2023-08-30 21:45:01,011 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2023-08-30 21:45:01,014 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 54 transitions, 210 flow [2023-08-30 21:45:01,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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) [2023-08-30 21:45:01,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:45:01,015 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, 1, 1] [2023-08-30 21:45:01,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 21:45:01,016 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 2 more)] === [2023-08-30 21:45:01,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:45:01,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1483561397, now seen corresponding path program 4 times [2023-08-30 21:45:01,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:45:01,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779572291] [2023-08-30 21:45:01,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:45:01,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:45:01,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:45:01,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:45:01,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:45:01,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779572291] [2023-08-30 21:45:01,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779572291] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:45:01,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 21:45:01,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 21:45:01,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74786779] [2023-08-30 21:45:01,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:45:01,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 21:45:01,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:45:01,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 21:45:01,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 21:45:01,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 221 [2023-08-30 21:45:01,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 54 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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) [2023-08-30 21:45:01,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:45:01,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 221 [2023-08-30 21:45:01,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:45:01,745 INFO L130 PetriNetUnfolder]: 2894/4963 cut-off events. [2023-08-30 21:45:01,746 INFO L131 PetriNetUnfolder]: For 4304/4457 co-relation queries the response was YES. [2023-08-30 21:45:01,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13605 conditions, 4963 events. 2894/4963 cut-off events. For 4304/4457 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 35623 event pairs, 767 based on Foata normal form. 137/4716 useless extension candidates. Maximal degree in co-relation 10411. Up to 4202 conditions per place. [2023-08-30 21:45:01,782 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 43 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-08-30 21:45:01,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 67 transitions, 343 flow [2023-08-30 21:45:01,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 21:45:01,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 21:45:01,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-08-30 21:45:01,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5912518853695324 [2023-08-30 21:45:01,786 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-08-30 21:45:01,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-08-30 21:45:01,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:45:01,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-08-30 21:45:01,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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) [2023-08-30 21:45:01,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 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) [2023-08-30 21:45:01,789 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 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) [2023-08-30 21:45:01,789 INFO L175 Difference]: Start difference. First operand has 70 places, 54 transitions, 210 flow. Second operand 3 states and 392 transitions. [2023-08-30 21:45:01,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 67 transitions, 343 flow [2023-08-30 21:45:01,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 67 transitions, 339 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 21:45:01,828 INFO L231 Difference]: Finished difference. Result has 71 places, 54 transitions, 214 flow [2023-08-30 21:45:01,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=71, PETRI_TRANSITIONS=54} [2023-08-30 21:45:01,830 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 17 predicate places. [2023-08-30 21:45:01,830 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 54 transitions, 214 flow [2023-08-30 21:45:01,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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) [2023-08-30 21:45:01,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:45:01,830 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, 1, 1] [2023-08-30 21:45:01,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 21:45:01,831 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 2 more)] === [2023-08-30 21:45:01,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:45:01,831 INFO L85 PathProgramCache]: Analyzing trace with hash -284950999, now seen corresponding path program 5 times [2023-08-30 21:45:01,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:45:01,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068890162] [2023-08-30 21:45:01,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:45:01,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:45:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:45:02,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:45:02,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:45:02,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068890162] [2023-08-30 21:45:02,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068890162] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:45:02,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 21:45:02,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 21:45:02,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047966035] [2023-08-30 21:45:02,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:45:02,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 21:45:02,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:45:02,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 21:45:02,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 21:45:02,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 221 [2023-08-30 21:45:02,022 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 54 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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) [2023-08-30 21:45:02,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:45:02,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 221 [2023-08-30 21:45:02,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:45:02,447 INFO L130 PetriNetUnfolder]: 2297/4053 cut-off events. [2023-08-30 21:45:02,447 INFO L131 PetriNetUnfolder]: For 3822/3883 co-relation queries the response was YES. [2023-08-30 21:45:02,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11382 conditions, 4053 events. 2297/4053 cut-off events. For 3822/3883 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 27679 event pairs, 594 based on Foata normal form. 126/3920 useless extension candidates. Maximal degree in co-relation 8308. Up to 3150 conditions per place. [2023-08-30 21:45:02,468 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 41 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-08-30 21:45:02,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 64 transitions, 338 flow [2023-08-30 21:45:02,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 21:45:02,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 21:45:02,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2023-08-30 21:45:02,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2023-08-30 21:45:02,471 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2023-08-30 21:45:02,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2023-08-30 21:45:02,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:45:02,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2023-08-30 21:45:02,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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) [2023-08-30 21:45:02,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 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) [2023-08-30 21:45:02,474 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 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) [2023-08-30 21:45:02,474 INFO L175 Difference]: Start difference. First operand has 71 places, 54 transitions, 214 flow. Second operand 3 states and 390 transitions. [2023-08-30 21:45:02,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 64 transitions, 338 flow [2023-08-30 21:45:02,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 64 transitions, 332 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 21:45:02,489 INFO L231 Difference]: Finished difference. Result has 72 places, 53 transitions, 210 flow [2023-08-30 21:45:02,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=72, PETRI_TRANSITIONS=53} [2023-08-30 21:45:02,492 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 18 predicate places. [2023-08-30 21:45:02,492 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 53 transitions, 210 flow [2023-08-30 21:45:02,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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) [2023-08-30 21:45:02,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:45:02,493 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, 1, 1] [2023-08-30 21:45:02,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 21:45:02,493 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 2 more)] === [2023-08-30 21:45:02,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:45:02,494 INFO L85 PathProgramCache]: Analyzing trace with hash -13750227, now seen corresponding path program 6 times [2023-08-30 21:45:02,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:45:02,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663942014] [2023-08-30 21:45:02,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:45:02,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:45:02,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:45:04,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:45:04,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:45:04,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663942014] [2023-08-30 21:45:04,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663942014] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:45:04,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 21:45:04,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 21:45:04,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792343114] [2023-08-30 21:45:04,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:45:04,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 21:45:04,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:45:04,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 21:45:04,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-08-30 21:45:04,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 221 [2023-08-30 21:45:04,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 53 transitions, 210 flow. Second operand has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 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) [2023-08-30 21:45:04,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:45:04,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 221 [2023-08-30 21:45:04,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:45:07,758 INFO L130 PetriNetUnfolder]: 15002/22776 cut-off events. [2023-08-30 21:45:07,758 INFO L131 PetriNetUnfolder]: For 18350/18350 co-relation queries the response was YES. [2023-08-30 21:45:07,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65504 conditions, 22776 events. 15002/22776 cut-off events. For 18350/18350 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 146746 event pairs, 3417 based on Foata normal form. 1/22777 useless extension candidates. Maximal degree in co-relation 49841. Up to 7468 conditions per place. [2023-08-30 21:45:08,220 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 224 selfloop transitions, 25 changer transitions 16/269 dead transitions. [2023-08-30 21:45:08,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 269 transitions, 1481 flow [2023-08-30 21:45:08,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 21:45:08,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 21:45:08,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1519 transitions. [2023-08-30 21:45:08,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49095022624434387 [2023-08-30 21:45:08,227 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1519 transitions. [2023-08-30 21:45:08,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1519 transitions. [2023-08-30 21:45:08,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:45:08,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1519 transitions. [2023-08-30 21:45:08,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 108.5) internal successors, (1519), 14 states have internal predecessors, (1519), 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) [2023-08-30 21:45:08,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-08-30 21:45:08,237 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-08-30 21:45:08,237 INFO L175 Difference]: Start difference. First operand has 72 places, 53 transitions, 210 flow. Second operand 14 states and 1519 transitions. [2023-08-30 21:45:08,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 269 transitions, 1481 flow [2023-08-30 21:45:08,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 269 transitions, 1477 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 21:45:08,468 INFO L231 Difference]: Finished difference. Result has 94 places, 69 transitions, 411 flow [2023-08-30 21:45:08,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=411, PETRI_PLACES=94, PETRI_TRANSITIONS=69} [2023-08-30 21:45:08,471 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 40 predicate places. [2023-08-30 21:45:08,471 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 69 transitions, 411 flow [2023-08-30 21:45:08,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 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) [2023-08-30 21:45:08,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:45:08,473 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, 1, 1] [2023-08-30 21:45:08,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 21:45:08,474 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 2 more)] === [2023-08-30 21:45:08,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:45:08,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1266939235, now seen corresponding path program 7 times [2023-08-30 21:45:08,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:45:08,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67554366] [2023-08-30 21:45:08,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:45:08,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:45:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:45:10,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:45:10,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:45:10,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67554366] [2023-08-30 21:45:10,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67554366] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:45:10,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 21:45:10,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 21:45:10,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863442028] [2023-08-30 21:45:10,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:45:10,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 21:45:10,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:45:10,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 21:45:10,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-08-30 21:45:10,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 221 [2023-08-30 21:45:10,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 69 transitions, 411 flow. Second operand has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 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) [2023-08-30 21:45:10,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:45:10,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 221 [2023-08-30 21:45:10,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:45:16,448 INFO L130 PetriNetUnfolder]: 28410/43805 cut-off events. [2023-08-30 21:45:16,449 INFO L131 PetriNetUnfolder]: For 100107/100107 co-relation queries the response was YES. [2023-08-30 21:45:16,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154993 conditions, 43805 events. 28410/43805 cut-off events. For 100107/100107 co-relation queries the response was YES. Maximal size of possible extension queue 1535. Compared 319983 event pairs, 6949 based on Foata normal form. 1/43806 useless extension candidates. Maximal degree in co-relation 154752. Up to 14141 conditions per place. [2023-08-30 21:45:16,781 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 258 selfloop transitions, 31 changer transitions 9/302 dead transitions. [2023-08-30 21:45:16,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 302 transitions, 2201 flow [2023-08-30 21:45:16,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 21:45:16,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 21:45:16,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1514 transitions. [2023-08-30 21:45:16,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48933419521654814 [2023-08-30 21:45:16,786 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1514 transitions. [2023-08-30 21:45:16,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1514 transitions. [2023-08-30 21:45:16,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:45:16,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1514 transitions. [2023-08-30 21:45:16,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 108.14285714285714) internal successors, (1514), 14 states have internal predecessors, (1514), 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) [2023-08-30 21:45:16,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-08-30 21:45:16,798 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-08-30 21:45:16,799 INFO L175 Difference]: Start difference. First operand has 94 places, 69 transitions, 411 flow. Second operand 14 states and 1514 transitions. [2023-08-30 21:45:16,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 302 transitions, 2201 flow [2023-08-30 21:45:18,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 302 transitions, 2113 flow, removed 41 selfloop flow, removed 3 redundant places. [2023-08-30 21:45:18,789 INFO L231 Difference]: Finished difference. Result has 114 places, 92 transitions, 732 flow [2023-08-30 21:45:18,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=732, PETRI_PLACES=114, PETRI_TRANSITIONS=92} [2023-08-30 21:45:18,790 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 60 predicate places. [2023-08-30 21:45:18,790 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 92 transitions, 732 flow [2023-08-30 21:45:18,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 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) [2023-08-30 21:45:18,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:45:18,791 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, 1, 1] [2023-08-30 21:45:18,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 21:45:18,791 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 2 more)] === [2023-08-30 21:45:18,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:45:18,792 INFO L85 PathProgramCache]: Analyzing trace with hash 30479711, now seen corresponding path program 8 times [2023-08-30 21:45:18,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:45:18,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225809192] [2023-08-30 21:45:18,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:45:18,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:45:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:45:20,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:45:20,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:45:20,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225809192] [2023-08-30 21:45:20,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225809192] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:45:20,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 21:45:20,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 21:45:20,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794401047] [2023-08-30 21:45:20,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:45:20,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 21:45:20,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:45:20,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 21:45:20,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-08-30 21:45:20,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 221 [2023-08-30 21:45:20,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 92 transitions, 732 flow. Second operand has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 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) [2023-08-30 21:45:20,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:45:20,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 221 [2023-08-30 21:45:20,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:45:28,067 INFO L130 PetriNetUnfolder]: 41197/66288 cut-off events. [2023-08-30 21:45:28,067 INFO L131 PetriNetUnfolder]: For 272737/272737 co-relation queries the response was YES. [2023-08-30 21:45:28,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268266 conditions, 66288 events. 41197/66288 cut-off events. For 272737/272737 co-relation queries the response was YES. Maximal size of possible extension queue 2431. Compared 551214 event pairs, 11845 based on Foata normal form. 1/66281 useless extension candidates. Maximal degree in co-relation 267499. Up to 20176 conditions per place. [2023-08-30 21:45:28,641 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 349 selfloop transitions, 46 changer transitions 10/409 dead transitions. [2023-08-30 21:45:28,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 409 transitions, 3727 flow [2023-08-30 21:45:28,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 21:45:28,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 21:45:28,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1525 transitions. [2023-08-30 21:45:28,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928894634776988 [2023-08-30 21:45:28,648 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1525 transitions. [2023-08-30 21:45:28,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1525 transitions. [2023-08-30 21:45:28,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:45:28,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1525 transitions. [2023-08-30 21:45:28,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 108.92857142857143) internal successors, (1525), 14 states have internal predecessors, (1525), 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) [2023-08-30 21:45:28,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-08-30 21:45:28,658 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-08-30 21:45:28,658 INFO L175 Difference]: Start difference. First operand has 114 places, 92 transitions, 732 flow. Second operand 14 states and 1525 transitions. [2023-08-30 21:45:28,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 409 transitions, 3727 flow [2023-08-30 21:45:33,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 409 transitions, 3642 flow, removed 37 selfloop flow, removed 2 redundant places. [2023-08-30 21:45:33,118 INFO L231 Difference]: Finished difference. Result has 136 places, 130 transitions, 1329 flow [2023-08-30 21:45:33,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1329, PETRI_PLACES=136, PETRI_TRANSITIONS=130} [2023-08-30 21:45:33,119 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 82 predicate places. [2023-08-30 21:45:33,119 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 130 transitions, 1329 flow [2023-08-30 21:45:33,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 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) [2023-08-30 21:45:33,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:45:33,120 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, 1, 1] [2023-08-30 21:45:33,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 21:45:33,121 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 2 more)] === [2023-08-30 21:45:33,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:45:33,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1487531239, now seen corresponding path program 9 times [2023-08-30 21:45:33,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:45:33,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244733037] [2023-08-30 21:45:33,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:45:33,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:45:33,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:45:34,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:45:34,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:45:34,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244733037] [2023-08-30 21:45:34,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244733037] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:45:34,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 21:45:34,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 21:45:34,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125743982] [2023-08-30 21:45:34,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:45:34,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 21:45:34,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:45:34,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 21:45:34,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-08-30 21:45:34,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 221 [2023-08-30 21:45:34,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 130 transitions, 1329 flow. Second operand has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 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) [2023-08-30 21:45:34,834 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:45:34,834 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 221 [2023-08-30 21:45:34,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:45:46,577 INFO L130 PetriNetUnfolder]: 54513/90805 cut-off events. [2023-08-30 21:45:46,577 INFO L131 PetriNetUnfolder]: For 630352/630352 co-relation queries the response was YES. [2023-08-30 21:45:47,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419058 conditions, 90805 events. 54513/90805 cut-off events. For 630352/630352 co-relation queries the response was YES. Maximal size of possible extension queue 3630. Compared 828791 event pairs, 14555 based on Foata normal form. 1/90806 useless extension candidates. Maximal degree in co-relation 417605. Up to 30063 conditions per place. [2023-08-30 21:45:47,446 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 391 selfloop transitions, 60 changer transitions 10/465 dead transitions. [2023-08-30 21:45:47,446 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 465 transitions, 5078 flow [2023-08-30 21:45:47,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 21:45:47,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 21:45:47,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1521 transitions. [2023-08-30 21:45:47,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49159663865546216 [2023-08-30 21:45:47,451 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1521 transitions. [2023-08-30 21:45:47,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1521 transitions. [2023-08-30 21:45:47,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:45:47,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1521 transitions. [2023-08-30 21:45:47,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 108.64285714285714) internal successors, (1521), 14 states have internal predecessors, (1521), 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) [2023-08-30 21:45:47,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-08-30 21:45:47,460 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-08-30 21:45:47,460 INFO L175 Difference]: Start difference. First operand has 136 places, 130 transitions, 1329 flow. Second operand 14 states and 1521 transitions. [2023-08-30 21:45:47,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 465 transitions, 5078 flow [2023-08-30 21:45:59,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 465 transitions, 4952 flow, removed 58 selfloop flow, removed 3 redundant places. [2023-08-30 21:45:59,125 INFO L231 Difference]: Finished difference. Result has 157 places, 177 transitions, 2155 flow [2023-08-30 21:45:59,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2155, PETRI_PLACES=157, PETRI_TRANSITIONS=177} [2023-08-30 21:45:59,126 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 103 predicate places. [2023-08-30 21:45:59,126 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 177 transitions, 2155 flow [2023-08-30 21:45:59,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 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) [2023-08-30 21:45:59,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:45:59,127 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, 1, 1] [2023-08-30 21:45:59,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 21:45:59,127 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 2 more)] === [2023-08-30 21:45:59,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:45:59,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1107932573, now seen corresponding path program 10 times [2023-08-30 21:45:59,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:45:59,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949068552] [2023-08-30 21:45:59,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:45:59,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:45:59,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:46:00,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:46:00,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:46:00,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949068552] [2023-08-30 21:46:00,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949068552] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:46:00,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 21:46:00,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 21:46:00,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935835463] [2023-08-30 21:46:00,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:46:00,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 21:46:00,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:46:00,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 21:46:00,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-08-30 21:46:00,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 221 [2023-08-30 21:46:00,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 177 transitions, 2155 flow. Second operand has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 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) [2023-08-30 21:46:00,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:46:00,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 221 [2023-08-30 21:46:00,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:46:17,134 INFO L130 PetriNetUnfolder]: 66044/112152 cut-off events. [2023-08-30 21:46:17,135 INFO L131 PetriNetUnfolder]: For 1059112/1059112 co-relation queries the response was YES. [2023-08-30 21:46:18,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 564738 conditions, 112152 events. 66044/112152 cut-off events. For 1059112/1059112 co-relation queries the response was YES. Maximal size of possible extension queue 4704. Compared 1088300 event pairs, 20405 based on Foata normal form. 1/112153 useless extension candidates. Maximal degree in co-relation 562726. Up to 32599 conditions per place. [2023-08-30 21:46:18,540 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 434 selfloop transitions, 98 changer transitions 17/553 dead transitions. [2023-08-30 21:46:18,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 553 transitions, 6802 flow [2023-08-30 21:46:18,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 21:46:18,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 21:46:18,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1536 transitions. [2023-08-30 21:46:18,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4964447317388494 [2023-08-30 21:46:18,544 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1536 transitions. [2023-08-30 21:46:18,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1536 transitions. [2023-08-30 21:46:18,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:46:18,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1536 transitions. [2023-08-30 21:46:18,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 109.71428571428571) internal successors, (1536), 14 states have internal predecessors, (1536), 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) [2023-08-30 21:46:18,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-08-30 21:46:18,555 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-08-30 21:46:18,555 INFO L175 Difference]: Start difference. First operand has 157 places, 177 transitions, 2155 flow. Second operand 14 states and 1536 transitions. [2023-08-30 21:46:18,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 553 transitions, 6802 flow [2023-08-30 21:46:38,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 553 transitions, 6661 flow, removed 57 selfloop flow, removed 2 redundant places. [2023-08-30 21:46:38,732 INFO L231 Difference]: Finished difference. Result has 179 places, 228 transitions, 3285 flow [2023-08-30 21:46:38,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=2086, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3285, PETRI_PLACES=179, PETRI_TRANSITIONS=228} [2023-08-30 21:46:38,733 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 125 predicate places. [2023-08-30 21:46:38,733 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 228 transitions, 3285 flow [2023-08-30 21:46:38,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 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) [2023-08-30 21:46:38,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:46:38,734 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, 1, 1] [2023-08-30 21:46:38,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 21:46:38,735 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 21:46:38,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:46:38,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1586974173, now seen corresponding path program 11 times [2023-08-30 21:46:38,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:46:38,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685237191] [2023-08-30 21:46:38,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:46:38,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:46:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:46:40,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:46:40,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:46:40,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685237191] [2023-08-30 21:46:40,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685237191] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:46:40,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 21:46:40,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 21:46:40,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963900267] [2023-08-30 21:46:40,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:46:40,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 21:46:40,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:46:40,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 21:46:40,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-08-30 21:46:40,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 221 [2023-08-30 21:46:40,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 228 transitions, 3285 flow. Second operand has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 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) [2023-08-30 21:46:40,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:46:40,403 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 221 [2023-08-30 21:46:40,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:47:07,194 INFO L130 PetriNetUnfolder]: 90242/156259 cut-off events. [2023-08-30 21:47:07,194 INFO L131 PetriNetUnfolder]: For 2095632/2095632 co-relation queries the response was YES. [2023-08-30 21:47:08,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 867893 conditions, 156259 events. 90242/156259 cut-off events. For 2095632/2095632 co-relation queries the response was YES. Maximal size of possible extension queue 6832. Compared 1620769 event pairs, 30341 based on Foata normal form. 1/156260 useless extension candidates. Maximal degree in co-relation 864748. Up to 55511 conditions per place. [2023-08-30 21:47:08,972 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 526 selfloop transitions, 96 changer transitions 9/635 dead transitions. [2023-08-30 21:47:08,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 635 transitions, 9307 flow [2023-08-30 21:47:08,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 21:47:08,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 21:47:08,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1526 transitions. [2023-08-30 21:47:08,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49321266968325794 [2023-08-30 21:47:08,976 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1526 transitions. [2023-08-30 21:47:08,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1526 transitions. [2023-08-30 21:47:08,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:47:08,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1526 transitions. [2023-08-30 21:47:08,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 109.0) internal successors, (1526), 14 states have internal predecessors, (1526), 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) [2023-08-30 21:47:08,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-08-30 21:47:08,984 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-08-30 21:47:08,984 INFO L175 Difference]: Start difference. First operand has 179 places, 228 transitions, 3285 flow. Second operand 14 states and 1526 transitions. [2023-08-30 21:47:08,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 635 transitions, 9307 flow [2023-08-30 21:48:44,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 635 transitions, 9071 flow, removed 113 selfloop flow, removed 3 redundant places. [2023-08-30 21:48:44,928 INFO L231 Difference]: Finished difference. Result has 198 places, 284 transitions, 4520 flow [2023-08-30 21:48:44,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=3186, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4520, PETRI_PLACES=198, PETRI_TRANSITIONS=284} [2023-08-30 21:48:44,929 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 144 predicate places. [2023-08-30 21:48:44,929 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 284 transitions, 4520 flow [2023-08-30 21:48:44,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 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) [2023-08-30 21:48:44,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:48:44,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:48:44,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 21:48:44,930 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 21:48:44,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:48:44,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1403488815, now seen corresponding path program 12 times [2023-08-30 21:48:44,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:48:44,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543195939] [2023-08-30 21:48:44,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:48:44,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:48:45,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:48:46,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:48:46,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:48:46,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543195939] [2023-08-30 21:48:46,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543195939] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:48:46,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 21:48:46,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 21:48:46,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441568800] [2023-08-30 21:48:46,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:48:46,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 21:48:46,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:48:46,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 21:48:46,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-08-30 21:48:46,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 221 [2023-08-30 21:48:46,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 284 transitions, 4520 flow. Second operand has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 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) [2023-08-30 21:48:46,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:48:46,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 221 [2023-08-30 21:48:46,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand