/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 09:40:52,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 09:40:52,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 09:40:52,342 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 09:40:52,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 09:40:52,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 09:40:52,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 09:40:52,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 09:40:52,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 09:40:52,348 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 09:40:52,349 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 09:40:52,350 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 09:40:52,351 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 09:40:52,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 09:40:52,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 09:40:52,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 09:40:52,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 09:40:52,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 09:40:52,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 09:40:52,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 09:40:52,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 09:40:52,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 09:40:52,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 09:40:52,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 09:40:52,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-26 09:40:52,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-26 09:40:52,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-26 09:40:52,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-26 09:40:52,368 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-26 09:40:52,368 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-26 09:40:52,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-26 09:40:52,369 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-26 09:40:52,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-26 09:40:52,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 09:40:52,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 09:40:52,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 09:40:52,372 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2021-03-26 09:40:52,390 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 09:40:52,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 09:40:52,392 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 09:40:52,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 09:40:52,392 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 09:40:52,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 09:40:52,393 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 09:40:52,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 09:40:52,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 09:40:52,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 09:40:52,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 09:40:52,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 09:40:52,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 09:40:52,394 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 09:40:52,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 09:40:52,394 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 09:40:52,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 09:40:52,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 09:40:52,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 09:40:52,395 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 09:40:52,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 09:40:52,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 09:40:52,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 09:40:52,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 09:40:52,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 09:40:52,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 09:40:52,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 09:40:52,396 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-03-26 09:40:52,396 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 09:40:52,397 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 09:40:52,397 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 09:40:52,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 09:40:52,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 09:40:52,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 09:40:52,735 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-26 09:40:52,736 INFO L275 PluginConnector]: CDTParser initialized [2021-03-26 09:40:52,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i [2021-03-26 09:40:52,798 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/162db7d4d/b52f842ec01c4e478d23488f0d50240f/FLAGfda9441c7 [2021-03-26 09:40:53,290 INFO L306 CDTParser]: Found 1 translation units. [2021-03-26 09:40:53,291 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i [2021-03-26 09:40:53,305 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/162db7d4d/b52f842ec01c4e478d23488f0d50240f/FLAGfda9441c7 [2021-03-26 09:40:53,638 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/162db7d4d/b52f842ec01c4e478d23488f0d50240f [2021-03-26 09:40:53,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 09:40:53,641 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-26 09:40:53,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-26 09:40:53,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-26 09:40:53,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-26 09:40:53,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 09:40:53" (1/1) ... [2021-03-26 09:40:53,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15375b33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 09:40:53, skipping insertion in model container [2021-03-26 09:40:53,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 09:40:53" (1/1) ... [2021-03-26 09:40:53,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-26 09:40:53,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-26 09:40:53,815 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-26 09:40:53,992 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i[30503,30516] [2021-03-26 09:40:54,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 09:40:54,009 INFO L203 MainTranslator]: Completed pre-run [2021-03-26 09:40:54,028 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-26 09:40:54,046 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i[30503,30516] [2021-03-26 09:40:54,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 09:40:54,122 INFO L208 MainTranslator]: Completed translation [2021-03-26 09:40:54,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 09:40:54 WrapperNode [2021-03-26 09:40:54,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-26 09:40:54,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 09:40:54,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 09:40:54,124 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 09:40:54,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 09:40:54" (1/1) ... [2021-03-26 09:40:54,151 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 09:40:54" (1/1) ... [2021-03-26 09:40:54,166 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 09:40:54,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 09:40:54,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 09:40:54,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 09:40:54,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 09:40:54" (1/1) ... [2021-03-26 09:40:54,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 09:40:54" (1/1) ... [2021-03-26 09:40:54,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 09:40:54" (1/1) ... [2021-03-26 09:40:54,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 09:40:54" (1/1) ... [2021-03-26 09:40:54,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 09:40:54" (1/1) ... [2021-03-26 09:40:54,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 09:40:54" (1/1) ... [2021-03-26 09:40:54,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 09:40:54" (1/1) ... [2021-03-26 09:40:54,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 09:40:54,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 09:40:54,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 09:40:54,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 09:40:54,198 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 09:40:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 09:40:54,278 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-03-26 09:40:54,278 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-03-26 09:40:54,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-26 09:40:54,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-26 09:40:54,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-26 09:40:54,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-26 09:40:54,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-26 09:40:54,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-26 09:40:54,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 09:40:54,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 09:40:54,283 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 09:40:54,613 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 09:40:54,613 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-03-26 09:40:54,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 09:40:54 BoogieIcfgContainer [2021-03-26 09:40:54,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 09:40:54,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 09:40:54,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 09:40:54,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 09:40:54,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.03 09:40:53" (1/3) ... [2021-03-26 09:40:54,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47fbc49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 09:40:54, skipping insertion in model container [2021-03-26 09:40:54,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 09:40:54" (2/3) ... [2021-03-26 09:40:54,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47fbc49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 09:40:54, skipping insertion in model container [2021-03-26 09:40:54,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 09:40:54" (3/3) ... [2021-03-26 09:40:54,623 INFO L111 eAbstractionObserver]: Analyzing ICFG 46_monabsex2_vs.i [2021-03-26 09:40:54,628 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 09:40:54,632 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 09:40:54,633 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 09:40:54,660 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:54,660 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:54,660 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:54,660 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:54,661 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:54,661 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:54,661 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:54,661 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:54,661 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:54,662 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:54,662 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:54,662 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:54,663 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:54,664 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:54,664 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:54,664 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:54,666 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 09:40:54,680 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-26 09:40:54,696 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 09:40:54,696 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 09:40:54,696 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 09:40:54,696 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 09:40:54,696 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 09:40:54,696 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 09:40:54,696 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 09:40:54,696 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 09:40:54,704 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 30 transitions, 65 flow [2021-03-26 09:40:54,740 INFO L129 PetriNetUnfolder]: 2/38 cut-off events. [2021-03-26 09:40:54,740 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 09:40:54,755 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 38 events. 2/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 20. Up to 4 conditions per place. [2021-03-26 09:40:54,755 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 30 transitions, 65 flow [2021-03-26 09:40:54,758 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 30 transitions, 65 flow [2021-03-26 09:40:54,759 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 09:40:54,772 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 30 transitions, 65 flow [2021-03-26 09:40:54,776 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 30 transitions, 65 flow [2021-03-26 09:40:54,778 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 30 transitions, 65 flow [2021-03-26 09:40:54,793 INFO L129 PetriNetUnfolder]: 2/38 cut-off events. [2021-03-26 09:40:54,794 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 09:40:54,794 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 38 events. 2/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 49 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 20. Up to 4 conditions per place. [2021-03-26 09:40:54,796 INFO L142 LiptonReduction]: Number of co-enabled transitions 140 [2021-03-26 09:40:55,932 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2021-03-26 09:40:56,121 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2021-03-26 09:40:56,180 INFO L154 LiptonReduction]: Checked pairs total: 63 [2021-03-26 09:40:56,180 INFO L156 LiptonReduction]: Total number of compositions: 20 [2021-03-26 09:40:56,182 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1424 [2021-03-26 09:40:56,188 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-03-26 09:40:56,188 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 09:40:56,188 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 09:40:56,189 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-26 09:40:56,189 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 09:40:56,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 09:40:56,193 INFO L82 PathProgramCache]: Analyzing trace with hash 131104392, now seen corresponding path program 1 times [2021-03-26 09:40:56,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 09:40:56,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64400393] [2021-03-26 09:40:56,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 09:40:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 09:40:56,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 09:40:56,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 09:40:56,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 09:40:56,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64400393] [2021-03-26 09:40:56,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 09:40:56,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 09:40:56,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011677289] [2021-03-26 09:40:56,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 09:40:56,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 09:40:56,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 09:40:56,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 09:40:56,354 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 50 [2021-03-26 09:40:56,355 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 11 transitions, 27 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 09:40:56,356 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 09:40:56,356 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 50 [2021-03-26 09:40:56,357 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 09:40:56,370 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-03-26 09:40:56,370 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 09:40:56,370 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19 conditions, 10 events. 0/10 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 3/13 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-26 09:40:56,371 INFO L132 encePairwiseOnDemand]: 46/50 looper letters, 1 selfloop transitions, 2 changer transitions 0/8 dead transitions. [2021-03-26 09:40:56,371 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 13 places, 8 transitions, 27 flow [2021-03-26 09:40:56,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 09:40:56,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 09:40:56,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2021-03-26 09:40:56,381 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.72 [2021-03-26 09:40:56,381 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 108 transitions. [2021-03-26 09:40:56,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 108 transitions. [2021-03-26 09:40:56,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 09:40:56,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 108 transitions. [2021-03-26 09:40:56,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-03-26 09:40:56,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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) [2021-03-26 09:40:56,389 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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) [2021-03-26 09:40:56,391 INFO L185 Difference]: Start difference. First operand has 14 places, 11 transitions, 27 flow. Second operand 3 states and 108 transitions. [2021-03-26 09:40:56,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 13 places, 8 transitions, 27 flow [2021-03-26 09:40:56,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 8 transitions, 27 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-26 09:40:56,394 INFO L241 Difference]: Finished difference. Result has 13 places, 8 transitions, 25 flow [2021-03-26 09:40:56,395 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=21, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=25, PETRI_PLACES=13, PETRI_TRANSITIONS=8} [2021-03-26 09:40:56,396 INFO L343 CegarLoopForPetriNet]: 14 programPoint places, -1 predicate places. [2021-03-26 09:40:56,396 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 09:40:56,397 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 13 places, 8 transitions, 25 flow [2021-03-26 09:40:56,397 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 13 places, 8 transitions, 25 flow [2021-03-26 09:40:56,397 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 13 places, 8 transitions, 25 flow [2021-03-26 09:40:56,399 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-03-26 09:40:56,399 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 09:40:56,399 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18 conditions, 10 events. 0/10 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-26 09:40:56,400 INFO L142 LiptonReduction]: Number of co-enabled transitions 16 [2021-03-26 09:40:56,479 INFO L154 LiptonReduction]: Checked pairs total: 7 [2021-03-26 09:40:56,479 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 09:40:56,479 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 83 [2021-03-26 09:40:56,480 INFO L480 AbstractCegarLoop]: Abstraction has has 12 places, 7 transitions, 23 flow [2021-03-26 09:40:56,481 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 09:40:56,481 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 09:40:56,481 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2021-03-26 09:40:56,481 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 09:40:56,481 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 09:40:56,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 09:40:56,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1604685753, now seen corresponding path program 1 times [2021-03-26 09:40:56,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 09:40:56,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632166552] [2021-03-26 09:40:56,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 09:40:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 09:40:56,510 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 09:40:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 09:40:56,540 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 09:40:56,569 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 09:40:56,570 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 09:40:56,571 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 09:40:56,571 WARN L342 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 09:40:56,571 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-03-26 09:40:56,580 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:56,581 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:56,581 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:56,581 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:56,581 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:56,581 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:56,581 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:56,581 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:56,582 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:56,582 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:56,582 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:56,582 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:56,583 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:56,583 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:56,583 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:56,583 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:56,583 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:56,583 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:56,583 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:56,583 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:56,584 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:56,584 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:56,584 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:56,584 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:56,586 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:56,586 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:56,586 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:56,586 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:56,588 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:56,588 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:56,588 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:56,588 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:56,589 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 09:40:56,589 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-26 09:40:56,592 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 09:40:56,593 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 09:40:56,593 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 09:40:56,593 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 09:40:56,593 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 09:40:56,593 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 09:40:56,593 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 09:40:56,593 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 09:40:56,595 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 38 transitions, 88 flow [2021-03-26 09:40:56,610 INFO L129 PetriNetUnfolder]: 3/55 cut-off events. [2021-03-26 09:40:56,610 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-26 09:40:56,611 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 55 events. 3/55 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 97 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 39. Up to 6 conditions per place. [2021-03-26 09:40:56,611 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 38 transitions, 88 flow [2021-03-26 09:40:56,613 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 38 transitions, 88 flow [2021-03-26 09:40:56,613 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 09:40:56,614 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 38 transitions, 88 flow [2021-03-26 09:40:56,614 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 38 transitions, 88 flow [2021-03-26 09:40:56,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 38 transitions, 88 flow [2021-03-26 09:40:56,623 INFO L129 PetriNetUnfolder]: 3/55 cut-off events. [2021-03-26 09:40:56,623 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-26 09:40:56,624 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 55 events. 3/55 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 102 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 39. Up to 6 conditions per place. [2021-03-26 09:40:56,625 INFO L142 LiptonReduction]: Number of co-enabled transitions 392 [2021-03-26 09:40:57,585 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2021-03-26 09:40:57,767 INFO L154 LiptonReduction]: Checked pairs total: 482 [2021-03-26 09:40:57,767 INFO L156 LiptonReduction]: Total number of compositions: 23 [2021-03-26 09:40:57,768 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1155 [2021-03-26 09:40:57,770 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-03-26 09:40:57,770 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 09:40:57,770 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 09:40:57,770 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-26 09:40:57,770 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-26 09:40:57,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 09:40:57,771 INFO L82 PathProgramCache]: Analyzing trace with hash 199475965, now seen corresponding path program 1 times [2021-03-26 09:40:57,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 09:40:57,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978960515] [2021-03-26 09:40:57,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 09:40:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 09:40:57,812 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size [2021-03-26 09:40:57,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-26 09:40:57,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 09:40:57,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978960515] [2021-03-26 09:40:57,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 09:40:57,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 09:40:57,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763631838] [2021-03-26 09:40:57,828 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 09:40:57,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 09:40:57,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 09:40:57,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 09:40:57,829 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 61 [2021-03-26 09:40:57,830 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 09:40:57,830 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 09:40:57,830 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 61 [2021-03-26 09:40:57,830 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 09:40:57,847 INFO L129 PetriNetUnfolder]: 4/29 cut-off events. [2021-03-26 09:40:57,848 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-26 09:40:57,848 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 29 events. 4/29 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 62 event pairs, 1 based on Foata normal form. 13/38 useless extension candidates. Maximal degree in co-relation 34. Up to 11 conditions per place. [2021-03-26 09:40:57,848 INFO L132 encePairwiseOnDemand]: 55/61 looper letters, 8 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2021-03-26 09:40:57,848 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 19 transitions, 72 flow [2021-03-26 09:40:57,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 09:40:57,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 09:40:57,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2021-03-26 09:40:57,850 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7377049180327869 [2021-03-26 09:40:57,850 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 135 transitions. [2021-03-26 09:40:57,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 135 transitions. [2021-03-26 09:40:57,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 09:40:57,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 135 transitions. [2021-03-26 09:40:57,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2021-03-26 09:40:57,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 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) [2021-03-26 09:40:57,853 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 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) [2021-03-26 09:40:57,853 INFO L185 Difference]: Start difference. First operand has 22 places, 17 transitions, 46 flow. Second operand 3 states and 135 transitions. [2021-03-26 09:40:57,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 19 transitions, 72 flow [2021-03-26 09:40:57,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 19 transitions, 70 flow, removed 1 selfloop flow, removed 0 redundant places. [2021-03-26 09:40:57,854 INFO L241 Difference]: Finished difference. Result has 23 places, 17 transitions, 61 flow [2021-03-26 09:40:57,855 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=61, PETRI_PLACES=23, PETRI_TRANSITIONS=17} [2021-03-26 09:40:57,855 INFO L343 CegarLoopForPetriNet]: 22 programPoint places, 1 predicate places. [2021-03-26 09:40:57,855 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 09:40:57,855 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 17 transitions, 61 flow [2021-03-26 09:40:57,855 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 17 transitions, 61 flow [2021-03-26 09:40:57,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 23 places, 17 transitions, 61 flow [2021-03-26 09:40:57,858 INFO L129 PetriNetUnfolder]: 1/22 cut-off events. [2021-03-26 09:40:57,859 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-26 09:40:57,859 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 22 events. 1/22 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 23. Up to 7 conditions per place. [2021-03-26 09:40:57,859 INFO L142 LiptonReduction]: Number of co-enabled transitions 102 [2021-03-26 09:40:57,970 INFO L154 LiptonReduction]: Checked pairs total: 57 [2021-03-26 09:40:57,970 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 09:40:57,970 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 115 [2021-03-26 09:40:57,976 INFO L480 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 57 flow [2021-03-26 09:40:57,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 09:40:57,977 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 09:40:57,977 INFO L263 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2021-03-26 09:40:57,977 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 09:40:57,979 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-26 09:40:57,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 09:40:57,980 INFO L82 PathProgramCache]: Analyzing trace with hash -230395477, now seen corresponding path program 1 times [2021-03-26 09:40:57,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 09:40:57,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339472716] [2021-03-26 09:40:57,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 09:40:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 09:40:57,999 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 09:40:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 09:40:58,039 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 09:40:58,044 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 09:40:58,044 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 09:40:58,044 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 09:40:58,044 WARN L342 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 09:40:58,045 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-03-26 09:40:58,053 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,053 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,054 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,054 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,054 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,054 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,054 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,054 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,054 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,054 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,054 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,054 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,055 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,055 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,055 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,055 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,055 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,055 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,055 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,055 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,056 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,056 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,056 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,056 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,056 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,056 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,056 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,056 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,056 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,057 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,057 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,057 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,057 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,057 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,057 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,057 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,057 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,058 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,058 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,058 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,059 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,059 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,059 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,059 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,060 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,060 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,060 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,060 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:58,061 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 09:40:58,061 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-26 09:40:58,062 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 09:40:58,062 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 09:40:58,062 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 09:40:58,062 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 09:40:58,062 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 09:40:58,063 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 09:40:58,063 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 09:40:58,063 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 09:40:58,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 46 transitions, 113 flow [2021-03-26 09:40:58,074 INFO L129 PetriNetUnfolder]: 4/72 cut-off events. [2021-03-26 09:40:58,074 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-26 09:40:58,074 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 72 events. 4/72 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 151 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 59. Up to 8 conditions per place. [2021-03-26 09:40:58,074 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 46 transitions, 113 flow [2021-03-26 09:40:58,075 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 46 transitions, 113 flow [2021-03-26 09:40:58,075 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 09:40:58,075 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 52 places, 46 transitions, 113 flow [2021-03-26 09:40:58,076 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 52 places, 46 transitions, 113 flow [2021-03-26 09:40:58,076 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 46 transitions, 113 flow [2021-03-26 09:40:58,082 INFO L129 PetriNetUnfolder]: 4/72 cut-off events. [2021-03-26 09:40:58,082 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-26 09:40:58,083 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 72 events. 4/72 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 154 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 59. Up to 8 conditions per place. [2021-03-26 09:40:58,088 INFO L142 LiptonReduction]: Number of co-enabled transitions 756 [2021-03-26 09:40:59,353 INFO L154 LiptonReduction]: Checked pairs total: 1089 [2021-03-26 09:40:59,354 INFO L156 LiptonReduction]: Total number of compositions: 27 [2021-03-26 09:40:59,354 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1279 [2021-03-26 09:40:59,356 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-03-26 09:40:59,356 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 09:40:59,356 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 09:40:59,356 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-26 09:40:59,356 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-26 09:40:59,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 09:40:59,357 INFO L82 PathProgramCache]: Analyzing trace with hash 278314097, now seen corresponding path program 1 times [2021-03-26 09:40:59,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 09:40:59,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260462308] [2021-03-26 09:40:59,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 09:40:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 09:40:59,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 09:40:59,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 09:40:59,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 09:40:59,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260462308] [2021-03-26 09:40:59,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 09:40:59,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 09:40:59,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351719142] [2021-03-26 09:40:59,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 09:40:59,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 09:40:59,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 09:40:59,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 09:40:59,380 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 73 [2021-03-26 09:40:59,380 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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) [2021-03-26 09:40:59,380 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 09:40:59,380 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 73 [2021-03-26 09:40:59,380 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 09:40:59,416 INFO L129 PetriNetUnfolder]: 43/119 cut-off events. [2021-03-26 09:40:59,417 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-26 09:40:59,417 INFO L84 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 119 events. 43/119 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 500 event pairs, 19 based on Foata normal form. 49/136 useless extension candidates. Maximal degree in co-relation 193. Up to 76 conditions per place. [2021-03-26 09:40:59,418 INFO L132 encePairwiseOnDemand]: 65/73 looper letters, 12 selfloop transitions, 4 changer transitions 0/26 dead transitions. [2021-03-26 09:40:59,418 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 26 transitions, 105 flow [2021-03-26 09:40:59,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 09:40:59,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 09:40:59,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2021-03-26 09:40:59,420 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7123287671232876 [2021-03-26 09:40:59,420 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 156 transitions. [2021-03-26 09:40:59,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 156 transitions. [2021-03-26 09:40:59,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 09:40:59,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 156 transitions. [2021-03-26 09:40:59,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2021-03-26 09:40:59,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 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) [2021-03-26 09:40:59,422 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 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) [2021-03-26 09:40:59,422 INFO L185 Difference]: Start difference. First operand has 29 places, 22 transitions, 65 flow. Second operand 3 states and 156 transitions. [2021-03-26 09:40:59,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 26 transitions, 105 flow [2021-03-26 09:40:59,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 26 transitions, 99 flow, removed 3 selfloop flow, removed 0 redundant places. [2021-03-26 09:40:59,423 INFO L241 Difference]: Finished difference. Result has 30 places, 23 transitions, 85 flow [2021-03-26 09:40:59,424 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2021-03-26 09:40:59,424 INFO L343 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2021-03-26 09:40:59,424 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 09:40:59,424 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 23 transitions, 85 flow [2021-03-26 09:40:59,424 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 23 transitions, 85 flow [2021-03-26 09:40:59,424 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 23 transitions, 85 flow [2021-03-26 09:40:59,429 INFO L129 PetriNetUnfolder]: 14/55 cut-off events. [2021-03-26 09:40:59,429 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-26 09:40:59,430 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 55 events. 14/55 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 181 event pairs, 7 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 87. Up to 34 conditions per place. [2021-03-26 09:40:59,430 INFO L142 LiptonReduction]: Number of co-enabled transitions 242 [2021-03-26 09:40:59,458 INFO L154 LiptonReduction]: Checked pairs total: 149 [2021-03-26 09:40:59,458 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 09:40:59,458 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 34 [2021-03-26 09:40:59,459 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 85 flow [2021-03-26 09:40:59,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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) [2021-03-26 09:40:59,460 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 09:40:59,460 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 09:40:59,460 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-26 09:40:59,460 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-26 09:40:59,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 09:40:59,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1347305932, now seen corresponding path program 1 times [2021-03-26 09:40:59,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 09:40:59,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112519182] [2021-03-26 09:40:59,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 09:40:59,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 09:40:59,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 09:40:59,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 09:40:59,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 09:40:59,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 09:40:59,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 09:40:59,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112519182] [2021-03-26 09:40:59,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 09:40:59,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 09:40:59,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632187067] [2021-03-26 09:40:59,495 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 09:40:59,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 09:40:59,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 09:40:59,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 09:40:59,498 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 73 [2021-03-26 09:40:59,498 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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) [2021-03-26 09:40:59,498 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 09:40:59,498 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 73 [2021-03-26 09:40:59,498 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 09:40:59,530 INFO L129 PetriNetUnfolder]: 38/108 cut-off events. [2021-03-26 09:40:59,530 INFO L130 PetriNetUnfolder]: For 23/39 co-relation queries the response was YES. [2021-03-26 09:40:59,531 INFO L84 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 108 events. 38/108 cut-off events. For 23/39 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 383 event pairs, 7 based on Foata normal form. 22/122 useless extension candidates. Maximal degree in co-relation 215. Up to 42 conditions per place. [2021-03-26 09:40:59,531 INFO L132 encePairwiseOnDemand]: 67/73 looper letters, 10 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2021-03-26 09:40:59,532 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 26 transitions, 111 flow [2021-03-26 09:40:59,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 09:40:59,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 09:40:59,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2021-03-26 09:40:59,533 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.771689497716895 [2021-03-26 09:40:59,533 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 169 transitions. [2021-03-26 09:40:59,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 169 transitions. [2021-03-26 09:40:59,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 09:40:59,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 169 transitions. [2021-03-26 09:40:59,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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) [2021-03-26 09:40:59,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 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) [2021-03-26 09:40:59,536 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 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) [2021-03-26 09:40:59,536 INFO L185 Difference]: Start difference. First operand has 30 places, 23 transitions, 85 flow. Second operand 3 states and 169 transitions. [2021-03-26 09:40:59,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 26 transitions, 111 flow [2021-03-26 09:40:59,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 26 transitions, 107 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 09:40:59,537 INFO L241 Difference]: Finished difference. Result has 29 places, 23 transitions, 90 flow [2021-03-26 09:40:59,537 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2021-03-26 09:40:59,538 INFO L343 CegarLoopForPetriNet]: 29 programPoint places, 0 predicate places. [2021-03-26 09:40:59,538 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 09:40:59,538 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 23 transitions, 90 flow [2021-03-26 09:40:59,538 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 23 transitions, 90 flow [2021-03-26 09:40:59,538 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 23 transitions, 90 flow [2021-03-26 09:40:59,542 INFO L129 PetriNetUnfolder]: 12/51 cut-off events. [2021-03-26 09:40:59,542 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-26 09:40:59,543 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 51 events. 12/51 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 100 event pairs, 2 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 82. Up to 21 conditions per place. [2021-03-26 09:40:59,543 INFO L142 LiptonReduction]: Number of co-enabled transitions 224 [2021-03-26 09:40:59,548 INFO L154 LiptonReduction]: Checked pairs total: 59 [2021-03-26 09:40:59,549 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 09:40:59,549 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-03-26 09:40:59,549 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 90 flow [2021-03-26 09:40:59,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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) [2021-03-26 09:40:59,550 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 09:40:59,550 INFO L263 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1] [2021-03-26 09:40:59,550 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-26 09:40:59,550 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-26 09:40:59,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 09:40:59,551 INFO L82 PathProgramCache]: Analyzing trace with hash 617632651, now seen corresponding path program 1 times [2021-03-26 09:40:59,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 09:40:59,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153324896] [2021-03-26 09:40:59,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 09:40:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 09:40:59,560 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 09:40:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 09:40:59,568 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 09:40:59,572 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 09:40:59,572 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 09:40:59,572 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-26 09:40:59,572 WARN L342 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 09:40:59,573 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2021-03-26 09:40:59,581 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,581 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,581 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,581 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,582 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,582 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,582 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,582 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,582 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,582 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,582 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,582 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,583 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,583 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,583 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,583 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,583 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,583 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,583 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,583 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,583 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,583 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,584 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,584 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,584 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,584 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,584 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,584 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,584 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,584 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,584 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,584 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,585 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,585 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,585 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,585 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,585 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,585 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,585 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,585 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,585 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,585 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,586 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,586 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,586 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,586 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,586 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,586 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,586 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,586 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,587 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,587 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,591 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,592 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,592 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,592 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,593 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,593 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,593 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,593 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,594 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,595 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,595 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,595 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:40:59,596 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 09:40:59,596 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-26 09:40:59,597 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 09:40:59,597 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 09:40:59,597 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 09:40:59,597 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 09:40:59,597 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 09:40:59,598 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 09:40:59,598 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 09:40:59,598 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 09:40:59,602 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 54 transitions, 140 flow [2021-03-26 09:40:59,609 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2021-03-26 09:40:59,609 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-03-26 09:40:59,609 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 89 events. 5/89 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 187 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 80. Up to 10 conditions per place. [2021-03-26 09:40:59,609 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 54 transitions, 140 flow [2021-03-26 09:40:59,610 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 54 transitions, 140 flow [2021-03-26 09:40:59,610 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 09:40:59,610 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 54 transitions, 140 flow [2021-03-26 09:40:59,611 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 54 transitions, 140 flow [2021-03-26 09:40:59,611 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 54 transitions, 140 flow [2021-03-26 09:40:59,623 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2021-03-26 09:40:59,623 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-03-26 09:40:59,624 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 89 events. 5/89 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 216 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 80. Up to 10 conditions per place. [2021-03-26 09:40:59,626 INFO L142 LiptonReduction]: Number of co-enabled transitions 1232 [2021-03-26 09:41:01,005 INFO L154 LiptonReduction]: Checked pairs total: 1723 [2021-03-26 09:41:01,005 INFO L156 LiptonReduction]: Total number of compositions: 31 [2021-03-26 09:41:01,006 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1396 [2021-03-26 09:41:01,014 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-26 09:41:01,014 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 09:41:01,014 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 09:41:01,014 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-26 09:41:01,014 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 09:41:01,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 09:41:01,015 INFO L82 PathProgramCache]: Analyzing trace with hash 366695279, now seen corresponding path program 1 times [2021-03-26 09:41:01,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 09:41:01,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735287761] [2021-03-26 09:41:01,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 09:41:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 09:41:01,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 09:41:01,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 09:41:01,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 09:41:01,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735287761] [2021-03-26 09:41:01,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 09:41:01,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 09:41:01,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461108520] [2021-03-26 09:41:01,052 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 09:41:01,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 09:41:01,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 09:41:01,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 09:41:01,053 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 85 [2021-03-26 09:41:01,054 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2021-03-26 09:41:01,054 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 09:41:01,054 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 85 [2021-03-26 09:41:01,054 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 09:41:01,153 INFO L129 PetriNetUnfolder]: 318/596 cut-off events. [2021-03-26 09:41:01,153 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-03-26 09:41:01,155 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1129 conditions, 596 events. 318/596 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 3519 event pairs, 189 based on Foata normal form. 197/603 useless extension candidates. Maximal degree in co-relation 1087. Up to 477 conditions per place. [2021-03-26 09:41:01,161 INFO L132 encePairwiseOnDemand]: 75/85 looper letters, 16 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2021-03-26 09:41:01,161 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 33 transitions, 140 flow [2021-03-26 09:41:01,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 09:41:01,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 09:41:01,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 180 transitions. [2021-03-26 09:41:01,167 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7058823529411765 [2021-03-26 09:41:01,168 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 180 transitions. [2021-03-26 09:41:01,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 180 transitions. [2021-03-26 09:41:01,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 09:41:01,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 180 transitions. [2021-03-26 09:41:01,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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) [2021-03-26 09:41:01,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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) [2021-03-26 09:41:01,171 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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) [2021-03-26 09:41:01,177 INFO L185 Difference]: Start difference. First operand has 36 places, 27 transitions, 86 flow. Second operand 3 states and 180 transitions. [2021-03-26 09:41:01,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 33 transitions, 140 flow [2021-03-26 09:41:01,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 33 transitions, 128 flow, removed 6 selfloop flow, removed 0 redundant places. [2021-03-26 09:41:01,179 INFO L241 Difference]: Finished difference. Result has 37 places, 29 transitions, 109 flow [2021-03-26 09:41:01,179 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2021-03-26 09:41:01,179 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2021-03-26 09:41:01,179 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 09:41:01,179 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 29 transitions, 109 flow [2021-03-26 09:41:01,179 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 29 transitions, 109 flow [2021-03-26 09:41:01,179 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 29 transitions, 109 flow [2021-03-26 09:41:01,191 INFO L129 PetriNetUnfolder]: 91/184 cut-off events. [2021-03-26 09:41:01,191 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-26 09:41:01,192 INFO L84 FinitePrefix]: Finished finitePrefix Result has 364 conditions, 184 events. 91/184 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 851 event pairs, 58 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 343. Up to 157 conditions per place. [2021-03-26 09:41:01,193 INFO L142 LiptonReduction]: Number of co-enabled transitions 408 [2021-03-26 09:41:01,231 INFO L154 LiptonReduction]: Checked pairs total: 265 [2021-03-26 09:41:01,231 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 09:41:01,231 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 52 [2021-03-26 09:41:01,232 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 109 flow [2021-03-26 09:41:01,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2021-03-26 09:41:01,232 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 09:41:01,232 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 09:41:01,232 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-26 09:41:01,233 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 09:41:01,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 09:41:01,233 INFO L82 PathProgramCache]: Analyzing trace with hash 47930337, now seen corresponding path program 1 times [2021-03-26 09:41:01,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 09:41:01,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705809266] [2021-03-26 09:41:01,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 09:41:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 09:41:01,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 09:41:01,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 09:41:01,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 09:41:01,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 09:41:01,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 09:41:01,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705809266] [2021-03-26 09:41:01,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 09:41:01,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 09:41:01,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865253228] [2021-03-26 09:41:01,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 09:41:01,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 09:41:01,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 09:41:01,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 09:41:01,276 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 85 [2021-03-26 09:41:01,276 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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) [2021-03-26 09:41:01,276 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 09:41:01,276 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 85 [2021-03-26 09:41:01,276 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 09:41:01,352 INFO L129 PetriNetUnfolder]: 204/424 cut-off events. [2021-03-26 09:41:01,352 INFO L130 PetriNetUnfolder]: For 151/285 co-relation queries the response was YES. [2021-03-26 09:41:01,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 915 conditions, 424 events. 204/424 cut-off events. For 151/285 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2089 event pairs, 40 based on Foata normal form. 135/525 useless extension candidates. Maximal degree in co-relation 892. Up to 189 conditions per place. [2021-03-26 09:41:01,356 INFO L132 encePairwiseOnDemand]: 77/85 looper letters, 13 selfloop transitions, 4 changer transitions 0/33 dead transitions. [2021-03-26 09:41:01,356 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 33 transitions, 143 flow [2021-03-26 09:41:01,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 09:41:01,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 09:41:01,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 192 transitions. [2021-03-26 09:41:01,357 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7529411764705882 [2021-03-26 09:41:01,357 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 192 transitions. [2021-03-26 09:41:01,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 192 transitions. [2021-03-26 09:41:01,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 09:41:01,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 192 transitions. [2021-03-26 09:41:01,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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) [2021-03-26 09:41:01,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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) [2021-03-26 09:41:01,360 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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) [2021-03-26 09:41:01,360 INFO L185 Difference]: Start difference. First operand has 37 places, 29 transitions, 109 flow. Second operand 3 states and 192 transitions. [2021-03-26 09:41:01,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 33 transitions, 143 flow [2021-03-26 09:41:01,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 33 transitions, 138 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 09:41:01,363 INFO L241 Difference]: Finished difference. Result has 35 places, 29 transitions, 116 flow [2021-03-26 09:41:01,363 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2021-03-26 09:41:01,363 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2021-03-26 09:41:01,363 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 09:41:01,363 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 29 transitions, 116 flow [2021-03-26 09:41:01,363 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 29 transitions, 116 flow [2021-03-26 09:41:01,364 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 29 transitions, 116 flow [2021-03-26 09:41:01,371 INFO L129 PetriNetUnfolder]: 51/130 cut-off events. [2021-03-26 09:41:01,371 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-26 09:41:01,372 INFO L84 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 130 events. 51/130 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 446 event pairs, 15 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 239. Up to 75 conditions per place. [2021-03-26 09:41:01,373 INFO L142 LiptonReduction]: Number of co-enabled transitions 372 [2021-03-26 09:41:01,395 INFO L154 LiptonReduction]: Checked pairs total: 104 [2021-03-26 09:41:01,395 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 09:41:01,395 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 32 [2021-03-26 09:41:01,397 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 116 flow [2021-03-26 09:41:01,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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) [2021-03-26 09:41:01,397 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 09:41:01,397 INFO L263 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1] [2021-03-26 09:41:01,397 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-26 09:41:01,397 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 09:41:01,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 09:41:01,398 INFO L82 PathProgramCache]: Analyzing trace with hash 911557882, now seen corresponding path program 1 times [2021-03-26 09:41:01,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 09:41:01,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175587885] [2021-03-26 09:41:01,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 09:41:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 09:41:01,414 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 09:41:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 09:41:01,429 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 09:41:01,435 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 09:41:01,435 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 09:41:01,436 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-26 09:41:01,436 WARN L342 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 09:41:01,437 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2021-03-26 09:41:01,448 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,448 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,448 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,448 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,448 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,449 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,449 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,449 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,449 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,449 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,449 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,449 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,449 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,449 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,449 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,449 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,449 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,449 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,450 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,450 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,450 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,450 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,450 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,450 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,450 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,450 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,450 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,450 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,450 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,450 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,450 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,450 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,451 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,451 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,451 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,451 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,452 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,452 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,452 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,452 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,452 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,452 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,452 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,452 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,453 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,453 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,453 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,453 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,453 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,453 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,453 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,453 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,453 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,453 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,453 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,453 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,453 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,453 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,454 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,454 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,454 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,454 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,454 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,455 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,456 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,457 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,457 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,457 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,458 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,458 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,458 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,458 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,460 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,460 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,460 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,460 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,461 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,461 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,461 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,461 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:01,462 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 09:41:01,462 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-03-26 09:41:01,462 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 09:41:01,462 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 09:41:01,463 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 09:41:01,463 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 09:41:01,463 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 09:41:01,463 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 09:41:01,463 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 09:41:01,463 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 09:41:01,466 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 62 transitions, 169 flow [2021-03-26 09:41:01,472 INFO L129 PetriNetUnfolder]: 6/106 cut-off events. [2021-03-26 09:41:01,472 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2021-03-26 09:41:01,473 INFO L84 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 106 events. 6/106 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 220 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 102. Up to 12 conditions per place. [2021-03-26 09:41:01,473 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 62 transitions, 169 flow [2021-03-26 09:41:01,473 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 62 transitions, 169 flow [2021-03-26 09:41:01,473 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 09:41:01,474 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 62 transitions, 169 flow [2021-03-26 09:41:01,474 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 62 transitions, 169 flow [2021-03-26 09:41:01,474 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 62 transitions, 169 flow [2021-03-26 09:41:01,480 INFO L129 PetriNetUnfolder]: 6/106 cut-off events. [2021-03-26 09:41:01,481 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2021-03-26 09:41:01,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 106 events. 6/106 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 229 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 102. Up to 12 conditions per place. [2021-03-26 09:41:01,483 INFO L142 LiptonReduction]: Number of co-enabled transitions 1820 [2021-03-26 09:41:02,996 INFO L154 LiptonReduction]: Checked pairs total: 2795 [2021-03-26 09:41:02,997 INFO L156 LiptonReduction]: Total number of compositions: 35 [2021-03-26 09:41:02,997 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1524 [2021-03-26 09:41:02,998 INFO L129 PetriNetUnfolder]: 0/8 cut-off events. [2021-03-26 09:41:02,998 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 09:41:02,998 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 09:41:02,999 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-26 09:41:02,999 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 09:41:02,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 09:41:02,999 INFO L82 PathProgramCache]: Analyzing trace with hash 466528114, now seen corresponding path program 1 times [2021-03-26 09:41:02,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 09:41:02,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358651612] [2021-03-26 09:41:02,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 09:41:03,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 09:41:03,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 09:41:03,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 09:41:03,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 09:41:03,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358651612] [2021-03-26 09:41:03,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 09:41:03,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 09:41:03,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344409358] [2021-03-26 09:41:03,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 09:41:03,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 09:41:03,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 09:41:03,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 09:41:03,013 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 97 [2021-03-26 09:41:03,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2021-03-26 09:41:03,014 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 09:41:03,014 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 97 [2021-03-26 09:41:03,014 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 09:41:03,278 INFO L129 PetriNetUnfolder]: 1973/3105 cut-off events. [2021-03-26 09:41:03,278 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2021-03-26 09:41:03,287 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5923 conditions, 3105 events. 1973/3105 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 20947 event pairs, 1351 based on Foata normal form. 821/2922 useless extension candidates. Maximal degree in co-relation 5869. Up to 2706 conditions per place. [2021-03-26 09:41:03,310 INFO L132 encePairwiseOnDemand]: 85/97 looper letters, 20 selfloop transitions, 6 changer transitions 0/40 dead transitions. [2021-03-26 09:41:03,310 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 40 transitions, 177 flow [2021-03-26 09:41:03,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 09:41:03,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 09:41:03,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 207 transitions. [2021-03-26 09:41:03,312 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.711340206185567 [2021-03-26 09:41:03,312 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 207 transitions. [2021-03-26 09:41:03,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 207 transitions. [2021-03-26 09:41:03,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 09:41:03,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 207 transitions. [2021-03-26 09:41:03,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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) [2021-03-26 09:41:03,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2021-03-26 09:41:03,314 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2021-03-26 09:41:03,314 INFO L185 Difference]: Start difference. First operand has 43 places, 32 transitions, 109 flow. Second operand 3 states and 207 transitions. [2021-03-26 09:41:03,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 40 transitions, 177 flow [2021-03-26 09:41:03,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 40 transitions, 157 flow, removed 10 selfloop flow, removed 0 redundant places. [2021-03-26 09:41:03,317 INFO L241 Difference]: Finished difference. Result has 44 places, 35 transitions, 133 flow [2021-03-26 09:41:03,317 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2021-03-26 09:41:03,317 INFO L343 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2021-03-26 09:41:03,317 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 09:41:03,317 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 35 transitions, 133 flow [2021-03-26 09:41:03,319 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 35 transitions, 133 flow [2021-03-26 09:41:03,319 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 35 transitions, 133 flow [2021-03-26 09:41:03,384 INFO L129 PetriNetUnfolder]: 444/689 cut-off events. [2021-03-26 09:41:03,384 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-26 09:41:03,385 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1373 conditions, 689 events. 444/689 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 3523 event pairs, 313 based on Foata normal form. 0/603 useless extension candidates. Maximal degree in co-relation 1351. Up to 656 conditions per place. [2021-03-26 09:41:03,392 INFO L142 LiptonReduction]: Number of co-enabled transitions 616 [2021-03-26 09:41:03,429 INFO L154 LiptonReduction]: Checked pairs total: 415 [2021-03-26 09:41:03,429 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 09:41:03,429 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 112 [2021-03-26 09:41:03,431 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 133 flow [2021-03-26 09:41:03,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2021-03-26 09:41:03,431 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 09:41:03,432 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 09:41:03,433 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-26 09:41:03,433 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 09:41:03,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 09:41:03,433 INFO L82 PathProgramCache]: Analyzing trace with hash -2060726670, now seen corresponding path program 1 times [2021-03-26 09:41:03,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 09:41:03,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603562527] [2021-03-26 09:41:03,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 09:41:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 09:41:03,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 09:41:03,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 09:41:03,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 09:41:03,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 09:41:03,458 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 09:41:03,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603562527] [2021-03-26 09:41:03,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 09:41:03,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 09:41:03,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002421119] [2021-03-26 09:41:03,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 09:41:03,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 09:41:03,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 09:41:03,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 09:41:03,460 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 97 [2021-03-26 09:41:03,460 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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) [2021-03-26 09:41:03,460 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 09:41:03,460 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 97 [2021-03-26 09:41:03,460 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 09:41:03,610 INFO L129 PetriNetUnfolder]: 960/1722 cut-off events. [2021-03-26 09:41:03,610 INFO L130 PetriNetUnfolder]: For 879/2044 co-relation queries the response was YES. [2021-03-26 09:41:03,618 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3657 conditions, 1722 events. 960/1722 cut-off events. For 879/2044 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 10523 event pairs, 219 based on Foata normal form. 729/2312 useless extension candidates. Maximal degree in co-relation 3633. Up to 889 conditions per place. [2021-03-26 09:41:03,629 INFO L132 encePairwiseOnDemand]: 87/97 looper letters, 16 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2021-03-26 09:41:03,629 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 40 transitions, 175 flow [2021-03-26 09:41:03,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 09:41:03,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 09:41:03,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2021-03-26 09:41:03,630 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7491408934707904 [2021-03-26 09:41:03,630 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2021-03-26 09:41:03,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2021-03-26 09:41:03,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 09:41:03,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2021-03-26 09:41:03,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2021-03-26 09:41:03,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2021-03-26 09:41:03,632 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2021-03-26 09:41:03,632 INFO L185 Difference]: Start difference. First operand has 44 places, 35 transitions, 133 flow. Second operand 3 states and 218 transitions. [2021-03-26 09:41:03,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 40 transitions, 175 flow [2021-03-26 09:41:03,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 40 transitions, 169 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 09:41:03,634 INFO L241 Difference]: Finished difference. Result has 41 places, 35 transitions, 142 flow [2021-03-26 09:41:03,634 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2021-03-26 09:41:03,634 INFO L343 CegarLoopForPetriNet]: 43 programPoint places, -2 predicate places. [2021-03-26 09:41:03,635 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 09:41:03,635 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 35 transitions, 142 flow [2021-03-26 09:41:03,635 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 35 transitions, 142 flow [2021-03-26 09:41:03,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 35 transitions, 142 flow [2021-03-26 09:41:03,657 INFO L129 PetriNetUnfolder]: 191/372 cut-off events. [2021-03-26 09:41:03,657 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-26 09:41:03,659 INFO L84 FinitePrefix]: Finished finitePrefix Result has 744 conditions, 372 events. 191/372 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1638 event pairs, 75 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 722. Up to 264 conditions per place. [2021-03-26 09:41:03,663 INFO L142 LiptonReduction]: Number of co-enabled transitions 556 [2021-03-26 09:41:03,690 INFO L154 LiptonReduction]: Checked pairs total: 156 [2021-03-26 09:41:03,691 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 09:41:03,691 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 56 [2021-03-26 09:41:03,692 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 142 flow [2021-03-26 09:41:03,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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) [2021-03-26 09:41:03,692 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 09:41:03,692 INFO L263 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 09:41:03,692 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-26 09:41:03,692 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 09:41:03,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 09:41:03,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1477565064, now seen corresponding path program 1 times [2021-03-26 09:41:03,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 09:41:03,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774156707] [2021-03-26 09:41:03,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 09:41:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 09:41:03,705 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 09:41:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 09:41:03,715 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 09:41:03,727 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 09:41:03,727 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 09:41:03,727 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-26 09:41:03,728 WARN L342 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 09:41:03,728 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2021-03-26 09:41:03,740 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,740 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,740 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,740 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,740 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,741 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,741 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,741 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,741 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,741 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,741 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,741 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,741 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,741 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,741 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,741 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,741 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,741 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,741 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,742 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,742 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,742 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,742 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,742 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,743 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,743 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,743 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,743 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,743 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,743 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,743 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,743 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,743 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,743 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,743 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,743 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,744 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,744 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,744 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,744 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,744 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,744 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,744 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,744 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,748 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,748 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,748 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,748 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,748 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,748 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,749 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,749 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,749 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,749 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,749 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,749 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,749 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,749 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,749 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,749 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,749 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,749 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,749 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,749 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,749 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,749 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,750 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,750 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,750 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,750 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,750 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,750 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,750 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,750 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,750 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,750 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,752 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,752 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,752 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,752 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,753 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,753 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,753 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,753 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,754 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,754 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,754 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,754 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,755 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,755 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,755 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,755 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,756 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,756 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,756 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,756 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:03,757 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 09:41:03,757 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-03-26 09:41:03,759 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 09:41:03,759 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 09:41:03,759 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 09:41:03,759 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 09:41:03,759 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 09:41:03,759 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 09:41:03,760 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 09:41:03,760 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 09:41:03,762 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 70 transitions, 200 flow [2021-03-26 09:41:03,770 INFO L129 PetriNetUnfolder]: 7/123 cut-off events. [2021-03-26 09:41:03,770 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2021-03-26 09:41:03,770 INFO L84 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 123 events. 7/123 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 266 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 126. Up to 14 conditions per place. [2021-03-26 09:41:03,770 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 70 transitions, 200 flow [2021-03-26 09:41:03,771 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 70 transitions, 200 flow [2021-03-26 09:41:03,771 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 09:41:03,772 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 70 transitions, 200 flow [2021-03-26 09:41:03,772 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 70 transitions, 200 flow [2021-03-26 09:41:03,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 70 transitions, 200 flow [2021-03-26 09:41:03,779 INFO L129 PetriNetUnfolder]: 7/123 cut-off events. [2021-03-26 09:41:03,779 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2021-03-26 09:41:03,780 INFO L84 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 123 events. 7/123 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 294 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 126. Up to 14 conditions per place. [2021-03-26 09:41:03,782 INFO L142 LiptonReduction]: Number of co-enabled transitions 2520 [2021-03-26 09:41:05,596 INFO L154 LiptonReduction]: Checked pairs total: 4071 [2021-03-26 09:41:05,597 INFO L156 LiptonReduction]: Total number of compositions: 39 [2021-03-26 09:41:05,597 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1826 [2021-03-26 09:41:05,598 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-26 09:41:05,598 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 09:41:05,598 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 09:41:05,599 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-26 09:41:05,599 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 09:41:05,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 09:41:05,599 INFO L82 PathProgramCache]: Analyzing trace with hash 577812634, now seen corresponding path program 1 times [2021-03-26 09:41:05,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 09:41:05,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034752611] [2021-03-26 09:41:05,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 09:41:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 09:41:05,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 09:41:05,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 09:41:05,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 09:41:05,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034752611] [2021-03-26 09:41:05,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 09:41:05,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 09:41:05,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141792212] [2021-03-26 09:41:05,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 09:41:05,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 09:41:05,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 09:41:05,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 09:41:05,614 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 109 [2021-03-26 09:41:05,614 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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) [2021-03-26 09:41:05,615 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 09:41:05,615 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 109 [2021-03-26 09:41:05,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 09:41:07,225 INFO L129 PetriNetUnfolder]: 11012/15742 cut-off events. [2021-03-26 09:41:07,225 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2021-03-26 09:41:07,281 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30226 conditions, 15742 events. 11012/15742 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 1618. Compared 112418 event pairs, 8141 based on Foata normal form. 3442/14139 useless extension candidates. Maximal degree in co-relation 30159. Up to 14251 conditions per place. [2021-03-26 09:41:07,384 INFO L132 encePairwiseOnDemand]: 95/109 looper letters, 24 selfloop transitions, 7 changer transitions 0/47 dead transitions. [2021-03-26 09:41:07,385 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 47 transitions, 216 flow [2021-03-26 09:41:07,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 09:41:07,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 09:41:07,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 228 transitions. [2021-03-26 09:41:07,386 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6972477064220184 [2021-03-26 09:41:07,386 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 228 transitions. [2021-03-26 09:41:07,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 228 transitions. [2021-03-26 09:41:07,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 09:41:07,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 228 transitions. [2021-03-26 09:41:07,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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) [2021-03-26 09:41:07,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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) [2021-03-26 09:41:07,388 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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) [2021-03-26 09:41:07,388 INFO L185 Difference]: Start difference. First operand has 50 places, 37 transitions, 134 flow. Second operand 3 states and 228 transitions. [2021-03-26 09:41:07,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 47 transitions, 216 flow [2021-03-26 09:41:07,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 47 transitions, 186 flow, removed 15 selfloop flow, removed 0 redundant places. [2021-03-26 09:41:07,390 INFO L241 Difference]: Finished difference. Result has 51 places, 41 transitions, 157 flow [2021-03-26 09:41:07,391 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=157, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2021-03-26 09:41:07,391 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2021-03-26 09:41:07,391 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 09:41:07,391 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 41 transitions, 157 flow [2021-03-26 09:41:07,391 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 41 transitions, 157 flow [2021-03-26 09:41:07,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 41 transitions, 157 flow [2021-03-26 09:41:07,599 INFO L129 PetriNetUnfolder]: 1873/2578 cut-off events. [2021-03-26 09:41:07,599 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-26 09:41:07,605 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5150 conditions, 2578 events. 1873/2578 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 14378 event pairs, 1400 based on Foata normal form. 0/2312 useless extension candidates. Maximal degree in co-relation 5127. Up to 2539 conditions per place. [2021-03-26 09:41:07,633 INFO L142 LiptonReduction]: Number of co-enabled transitions 866 [2021-03-26 09:41:07,796 INFO L154 LiptonReduction]: Checked pairs total: 597 [2021-03-26 09:41:07,796 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 09:41:07,796 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 405 [2021-03-26 09:41:07,797 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 157 flow [2021-03-26 09:41:07,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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) [2021-03-26 09:41:07,797 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 09:41:07,797 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 09:41:07,797 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-26 09:41:07,798 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 09:41:07,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 09:41:07,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1641695882, now seen corresponding path program 1 times [2021-03-26 09:41:07,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 09:41:07,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667659411] [2021-03-26 09:41:07,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 09:41:07,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 09:41:07,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 09:41:07,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 09:41:07,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 09:41:07,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 09:41:07,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 09:41:07,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667659411] [2021-03-26 09:41:07,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 09:41:07,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 09:41:07,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065162172] [2021-03-26 09:41:07,818 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 09:41:07,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 09:41:07,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 09:41:07,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 09:41:07,818 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 109 [2021-03-26 09:41:07,819 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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) [2021-03-26 09:41:07,819 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 09:41:07,819 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 109 [2021-03-26 09:41:07,819 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 09:41:08,299 INFO L129 PetriNetUnfolder]: 4252/7024 cut-off events. [2021-03-26 09:41:08,299 INFO L130 PetriNetUnfolder]: For 4691/13930 co-relation queries the response was YES. [2021-03-26 09:41:08,336 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14715 conditions, 7024 events. 4252/7024 cut-off events. For 4691/13930 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 50317 event pairs, 1162 based on Foata normal form. 3614/10039 useless extension candidates. Maximal degree in co-relation 14690. Up to 4081 conditions per place. [2021-03-26 09:41:08,370 INFO L132 encePairwiseOnDemand]: 97/109 looper letters, 19 selfloop transitions, 6 changer transitions 0/47 dead transitions. [2021-03-26 09:41:08,371 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 47 transitions, 207 flow [2021-03-26 09:41:08,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 09:41:08,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 09:41:08,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2021-03-26 09:41:08,372 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.746177370030581 [2021-03-26 09:41:08,372 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2021-03-26 09:41:08,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2021-03-26 09:41:08,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 09:41:08,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2021-03-26 09:41:08,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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) [2021-03-26 09:41:08,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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) [2021-03-26 09:41:08,374 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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) [2021-03-26 09:41:08,374 INFO L185 Difference]: Start difference. First operand has 51 places, 41 transitions, 157 flow. Second operand 3 states and 244 transitions. [2021-03-26 09:41:08,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 47 transitions, 207 flow [2021-03-26 09:41:08,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 47 transitions, 200 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 09:41:08,376 INFO L241 Difference]: Finished difference. Result has 47 places, 41 transitions, 168 flow [2021-03-26 09:41:08,376 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2021-03-26 09:41:08,376 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, -3 predicate places. [2021-03-26 09:41:08,376 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 09:41:08,377 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 47 places, 41 transitions, 168 flow [2021-03-26 09:41:08,377 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 47 places, 41 transitions, 168 flow [2021-03-26 09:41:08,377 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 47 places, 41 transitions, 168 flow [2021-03-26 09:41:08,436 INFO L129 PetriNetUnfolder]: 676/1137 cut-off events. [2021-03-26 09:41:08,436 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-26 09:41:08,442 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2274 conditions, 1137 events. 676/1137 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 6313 event pairs, 318 based on Foata normal form. 0/917 useless extension candidates. Maximal degree in co-relation 2251. Up to 912 conditions per place. [2021-03-26 09:41:08,455 INFO L142 LiptonReduction]: Number of co-enabled transitions 776 [2021-03-26 09:41:08,469 INFO L154 LiptonReduction]: Checked pairs total: 223 [2021-03-26 09:41:08,470 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 09:41:08,470 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 94 [2021-03-26 09:41:08,472 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 168 flow [2021-03-26 09:41:08,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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) [2021-03-26 09:41:08,473 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 09:41:08,473 INFO L263 CegarLoopForPetriNet]: trace histogram [7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 09:41:08,473 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-26 09:41:08,473 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 09:41:08,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 09:41:08,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1437727995, now seen corresponding path program 1 times [2021-03-26 09:41:08,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 09:41:08,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098437522] [2021-03-26 09:41:08,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 09:41:08,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 09:41:08,488 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 09:41:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 09:41:08,502 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 09:41:08,510 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 09:41:08,511 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 09:41:08,511 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-26 09:41:08,512 WARN L342 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 09:41:08,513 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2021-03-26 09:41:08,524 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,524 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,524 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,524 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,524 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,524 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,524 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,524 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,524 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,524 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,525 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,525 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,525 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,525 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,525 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,525 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,525 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,525 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,525 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,525 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,526 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,526 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,526 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,526 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,526 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,526 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,526 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,526 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,526 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,526 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,526 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,526 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,527 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,527 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,527 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,527 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,527 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,527 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,527 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,527 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,527 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,527 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,527 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,527 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,528 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,528 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,528 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,528 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,528 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,528 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,528 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,528 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,528 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,528 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,528 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,528 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,529 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,529 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,529 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,529 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,529 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,529 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,529 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,529 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,529 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,529 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,529 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,529 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,530 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,530 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,530 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,530 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,530 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,530 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,531 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,531 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,531 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,531 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,531 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,531 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,531 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,531 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,531 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,531 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,531 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,532 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,532 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,532 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,533 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,533 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,533 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,533 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,535 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,535 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,535 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,535 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,536 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,536 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,536 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,536 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,537 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,537 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,537 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,537 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,538 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,538 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,539 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,539 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,540 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,540 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,540 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,540 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:08,541 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 09:41:08,541 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-03-26 09:41:08,542 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 09:41:08,542 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 09:41:08,542 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 09:41:08,542 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 09:41:08,542 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 09:41:08,542 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 09:41:08,542 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 09:41:08,542 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 09:41:08,543 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 78 transitions, 233 flow [2021-03-26 09:41:08,552 INFO L129 PetriNetUnfolder]: 8/140 cut-off events. [2021-03-26 09:41:08,552 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2021-03-26 09:41:08,553 INFO L84 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 140 events. 8/140 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 308 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 152. Up to 16 conditions per place. [2021-03-26 09:41:08,553 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 78 transitions, 233 flow [2021-03-26 09:41:08,554 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 78 transitions, 233 flow [2021-03-26 09:41:08,554 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 09:41:08,554 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 78 transitions, 233 flow [2021-03-26 09:41:08,554 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 78 transitions, 233 flow [2021-03-26 09:41:08,554 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 78 transitions, 233 flow [2021-03-26 09:41:08,561 INFO L129 PetriNetUnfolder]: 8/140 cut-off events. [2021-03-26 09:41:08,562 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2021-03-26 09:41:08,562 INFO L84 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 140 events. 8/140 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 328 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 152. Up to 16 conditions per place. [2021-03-26 09:41:08,564 INFO L142 LiptonReduction]: Number of co-enabled transitions 3332 [2021-03-26 09:41:10,476 INFO L154 LiptonReduction]: Checked pairs total: 5083 [2021-03-26 09:41:10,476 INFO L156 LiptonReduction]: Total number of compositions: 43 [2021-03-26 09:41:10,476 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1922 [2021-03-26 09:41:10,477 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-03-26 09:41:10,477 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 09:41:10,477 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 09:41:10,478 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-26 09:41:10,478 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 09:41:10,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 09:41:10,478 INFO L82 PathProgramCache]: Analyzing trace with hash 700548796, now seen corresponding path program 1 times [2021-03-26 09:41:10,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 09:41:10,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889908209] [2021-03-26 09:41:10,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 09:41:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 09:41:10,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 09:41:10,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 09:41:10,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 09:41:10,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889908209] [2021-03-26 09:41:10,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 09:41:10,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 09:41:10,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636781129] [2021-03-26 09:41:10,493 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 09:41:10,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 09:41:10,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 09:41:10,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 09:41:10,494 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 121 [2021-03-26 09:41:10,494 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2021-03-26 09:41:10,494 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 09:41:10,494 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 121 [2021-03-26 09:41:10,494 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 09:41:17,529 INFO L129 PetriNetUnfolder]: 57279/77011 cut-off events. [2021-03-26 09:41:17,529 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2021-03-26 09:41:17,940 INFO L84 FinitePrefix]: Finished finitePrefix Result has 148666 conditions, 77011 events. 57279/77011 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6498. Compared 569150 event pairs, 44383 based on Foata normal form. 14338/66762 useless extension candidates. Maximal degree in co-relation 148585. Up to 71156 conditions per place. [2021-03-26 09:41:18,414 INFO L132 encePairwiseOnDemand]: 105/121 looper letters, 28 selfloop transitions, 8 changer transitions 0/54 dead transitions. [2021-03-26 09:41:18,414 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 54 transitions, 257 flow [2021-03-26 09:41:18,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 09:41:18,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 09:41:18,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2021-03-26 09:41:18,416 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6859504132231405 [2021-03-26 09:41:18,416 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 249 transitions. [2021-03-26 09:41:18,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 249 transitions. [2021-03-26 09:41:18,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 09:41:18,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 249 transitions. [2021-03-26 09:41:18,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 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) [2021-03-26 09:41:18,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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) [2021-03-26 09:41:18,419 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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) [2021-03-26 09:41:18,419 INFO L185 Difference]: Start difference. First operand has 57 places, 42 transitions, 161 flow. Second operand 3 states and 249 transitions. [2021-03-26 09:41:18,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 54 transitions, 257 flow [2021-03-26 09:41:18,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 215 flow, removed 21 selfloop flow, removed 0 redundant places. [2021-03-26 09:41:18,422 INFO L241 Difference]: Finished difference. Result has 58 places, 47 transitions, 181 flow [2021-03-26 09:41:18,422 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2021-03-26 09:41:18,422 INFO L343 CegarLoopForPetriNet]: 57 programPoint places, 1 predicate places. [2021-03-26 09:41:18,422 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 09:41:18,422 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 47 transitions, 181 flow [2021-03-26 09:41:18,422 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 47 transitions, 181 flow [2021-03-26 09:41:18,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 47 transitions, 181 flow [2021-03-26 09:41:19,027 INFO L129 PetriNetUnfolder]: 7258/9363 cut-off events. [2021-03-26 09:41:19,027 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-26 09:41:19,058 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18719 conditions, 9363 events. 7258/9363 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 1141. Compared 56374 event pairs, 5647 based on Foata normal form. 0/8725 useless extension candidates. Maximal degree in co-relation 18695. Up to 9318 conditions per place. [2021-03-26 09:41:19,166 INFO L142 LiptonReduction]: Number of co-enabled transitions 1158 [2021-03-26 09:41:19,500 INFO L154 LiptonReduction]: Checked pairs total: 815 [2021-03-26 09:41:19,500 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 09:41:19,500 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1078 [2021-03-26 09:41:19,501 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 181 flow [2021-03-26 09:41:19,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2021-03-26 09:41:19,501 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 09:41:19,501 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 09:41:19,501 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-26 09:41:19,501 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 09:41:19,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 09:41:19,502 INFO L82 PathProgramCache]: Analyzing trace with hash 594723587, now seen corresponding path program 1 times [2021-03-26 09:41:19,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 09:41:19,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350381326] [2021-03-26 09:41:19,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 09:41:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 09:41:19,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 09:41:19,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 09:41:19,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 09:41:19,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 09:41:19,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 09:41:19,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350381326] [2021-03-26 09:41:19,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 09:41:19,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 09:41:19,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553081540] [2021-03-26 09:41:19,520 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 09:41:19,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 09:41:19,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 09:41:19,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 09:41:19,521 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 121 [2021-03-26 09:41:19,521 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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) [2021-03-26 09:41:19,521 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 09:41:19,522 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 121 [2021-03-26 09:41:19,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 09:41:21,630 INFO L129 PetriNetUnfolder]: 18292/28638 cut-off events. [2021-03-26 09:41:21,631 INFO L130 PetriNetUnfolder]: For 23575/92911 co-relation queries the response was YES. [2021-03-26 09:41:21,772 INFO L84 FinitePrefix]: Finished finitePrefix Result has 59337 conditions, 28638 events. 18292/28638 cut-off events. For 23575/92911 co-relation queries the response was YES. Maximal size of possible extension queue 2023. Compared 232619 event pairs, 5957 based on Foata normal form. 16924/42925 useless extension candidates. Maximal degree in co-relation 59311. Up to 18401 conditions per place. [2021-03-26 09:41:21,875 INFO L132 encePairwiseOnDemand]: 107/121 looper letters, 22 selfloop transitions, 7 changer transitions 0/54 dead transitions. [2021-03-26 09:41:21,875 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 54 transitions, 239 flow [2021-03-26 09:41:21,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 09:41:21,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 09:41:21,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2021-03-26 09:41:21,876 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.743801652892562 [2021-03-26 09:41:21,876 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 270 transitions. [2021-03-26 09:41:21,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 270 transitions. [2021-03-26 09:41:21,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 09:41:21,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 270 transitions. [2021-03-26 09:41:21,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 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) [2021-03-26 09:41:21,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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) [2021-03-26 09:41:21,878 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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) [2021-03-26 09:41:21,878 INFO L185 Difference]: Start difference. First operand has 58 places, 47 transitions, 181 flow. Second operand 3 states and 270 transitions. [2021-03-26 09:41:21,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 54 transitions, 239 flow [2021-03-26 09:41:21,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 54 transitions, 231 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 09:41:21,882 INFO L241 Difference]: Finished difference. Result has 53 places, 47 transitions, 194 flow [2021-03-26 09:41:21,882 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2021-03-26 09:41:21,883 INFO L343 CegarLoopForPetriNet]: 57 programPoint places, -4 predicate places. [2021-03-26 09:41:21,883 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 09:41:21,883 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 47 transitions, 194 flow [2021-03-26 09:41:21,883 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 47 transitions, 194 flow [2021-03-26 09:41:21,883 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 47 transitions, 194 flow [2021-03-26 09:41:22,045 INFO L129 PetriNetUnfolder]: 2326/3585 cut-off events. [2021-03-26 09:41:22,045 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-26 09:41:22,062 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7170 conditions, 3585 events. 2326/3585 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 22494 event pairs, 1240 based on Foata normal form. 0/2907 useless extension candidates. Maximal degree in co-relation 7146. Up to 3099 conditions per place. [2021-03-26 09:41:22,096 INFO L142 LiptonReduction]: Number of co-enabled transitions 1032 [2021-03-26 09:41:22,165 INFO L154 LiptonReduction]: Checked pairs total: 295 [2021-03-26 09:41:22,166 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 09:41:22,166 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 283 [2021-03-26 09:41:22,166 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 194 flow [2021-03-26 09:41:22,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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) [2021-03-26 09:41:22,167 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 09:41:22,167 INFO L263 CegarLoopForPetriNet]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 09:41:22,167 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-26 09:41:22,167 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 09:41:22,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 09:41:22,167 INFO L82 PathProgramCache]: Analyzing trace with hash 2015243169, now seen corresponding path program 1 times [2021-03-26 09:41:22,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 09:41:22,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926578047] [2021-03-26 09:41:22,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 09:41:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 09:41:22,175 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 09:41:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 09:41:22,180 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 09:41:22,184 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 09:41:22,184 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 09:41:22,184 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-26 09:41:22,184 WARN L342 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 09:41:22,185 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2021-03-26 09:41:22,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,197 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,197 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,197 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,197 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,197 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,197 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,197 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,198 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,198 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,198 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,198 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,198 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,198 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,198 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,198 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,198 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,198 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,199 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,199 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,199 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,199 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,199 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,199 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,199 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,199 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,199 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,200 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,200 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,200 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,200 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,200 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,200 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,201 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,201 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,201 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,201 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,201 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,201 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,201 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,201 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,201 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,201 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,201 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,201 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,201 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,201 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,201 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,202 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,202 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,202 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,202 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,202 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,202 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,202 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,202 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,202 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,202 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,202 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,202 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,202 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,202 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,202 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,202 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,203 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,203 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,203 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,203 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,203 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,203 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,203 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,203 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,203 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,203 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,203 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,203 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,204 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,204 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,205 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,205 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,205 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,205 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,206 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,206 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,206 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,206 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,207 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,207 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,207 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,207 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,207 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,208 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,208 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,208 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,208 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,208 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,209 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,209 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,209 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,209 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,209 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,210 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,210 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,210 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,210 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:41:22,211 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 09:41:22,211 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-03-26 09:41:22,212 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 09:41:22,212 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 09:41:22,212 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 09:41:22,212 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 09:41:22,212 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 09:41:22,212 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 09:41:22,212 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 09:41:22,212 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 09:41:22,213 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 86 transitions, 268 flow [2021-03-26 09:41:22,221 INFO L129 PetriNetUnfolder]: 9/157 cut-off events. [2021-03-26 09:41:22,221 INFO L130 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2021-03-26 09:41:22,222 INFO L84 FinitePrefix]: Finished finitePrefix Result has 218 conditions, 157 events. 9/157 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 378 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 179. Up to 18 conditions per place. [2021-03-26 09:41:22,222 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 86 transitions, 268 flow [2021-03-26 09:41:22,222 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 86 transitions, 268 flow [2021-03-26 09:41:22,222 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 09:41:22,222 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 86 transitions, 268 flow [2021-03-26 09:41:22,223 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 86 transitions, 268 flow [2021-03-26 09:41:22,223 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 86 transitions, 268 flow [2021-03-26 09:41:22,230 INFO L129 PetriNetUnfolder]: 9/157 cut-off events. [2021-03-26 09:41:22,230 INFO L130 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2021-03-26 09:41:22,230 INFO L84 FinitePrefix]: Finished finitePrefix Result has 218 conditions, 157 events. 9/157 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 435 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 179. Up to 18 conditions per place. [2021-03-26 09:41:22,232 INFO L142 LiptonReduction]: Number of co-enabled transitions 4256 [2021-03-26 09:41:22,350 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-03-26 09:41:24,293 INFO L154 LiptonReduction]: Checked pairs total: 6921 [2021-03-26 09:41:24,294 INFO L156 LiptonReduction]: Total number of compositions: 47 [2021-03-26 09:41:24,294 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2072 [2021-03-26 09:41:24,295 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-26 09:41:24,295 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 09:41:24,295 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 09:41:24,295 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-26 09:41:24,296 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 09:41:24,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 09:41:24,296 INFO L82 PathProgramCache]: Analyzing trace with hash 834736595, now seen corresponding path program 1 times [2021-03-26 09:41:24,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 09:41:24,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029657429] [2021-03-26 09:41:24,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 09:41:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 09:41:24,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 09:41:24,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 09:41:24,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 09:41:24,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029657429] [2021-03-26 09:41:24,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 09:41:24,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 09:41:24,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449326329] [2021-03-26 09:41:24,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 09:41:24,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 09:41:24,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 09:41:24,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 09:41:24,311 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 133 [2021-03-26 09:41:24,311 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 47 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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) [2021-03-26 09:41:24,311 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 09:41:24,311 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 133 [2021-03-26 09:41:24,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 09:42:26,078 INFO L129 PetriNetUnfolder]: 283546/365232 cut-off events. [2021-03-26 09:42:26,078 INFO L130 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2021-03-26 09:42:28,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 708071 conditions, 365232 events. 283546/365232 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 26062. Compared 2765295 event pairs, 226861 based on Foata normal form. 59246/307962 useless extension candidates. Maximal degree in co-relation 707975. Up to 341753 conditions per place. [2021-03-26 09:42:30,214 INFO L132 encePairwiseOnDemand]: 115/133 looper letters, 32 selfloop transitions, 9 changer transitions 0/61 dead transitions. [2021-03-26 09:42:30,214 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 61 transitions, 300 flow [2021-03-26 09:42:30,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 09:42:30,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 09:42:30,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2021-03-26 09:42:30,215 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6766917293233082 [2021-03-26 09:42:30,215 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 270 transitions. [2021-03-26 09:42:30,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 270 transitions. [2021-03-26 09:42:30,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 09:42:30,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 270 transitions. [2021-03-26 09:42:30,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 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) [2021-03-26 09:42:30,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 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) [2021-03-26 09:42:30,217 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 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) [2021-03-26 09:42:30,217 INFO L185 Difference]: Start difference. First operand has 64 places, 47 transitions, 190 flow. Second operand 3 states and 270 transitions. [2021-03-26 09:42:30,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 61 transitions, 300 flow [2021-03-26 09:42:30,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 61 transitions, 244 flow, removed 28 selfloop flow, removed 0 redundant places. [2021-03-26 09:42:30,218 INFO L241 Difference]: Finished difference. Result has 65 places, 53 transitions, 205 flow [2021-03-26 09:42:30,219 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=205, PETRI_PLACES=65, PETRI_TRANSITIONS=53} [2021-03-26 09:42:30,219 INFO L343 CegarLoopForPetriNet]: 64 programPoint places, 1 predicate places. [2021-03-26 09:42:30,219 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 09:42:30,219 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 53 transitions, 205 flow [2021-03-26 09:42:30,219 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 53 transitions, 205 flow [2021-03-26 09:42:30,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 53 transitions, 205 flow [2021-03-26 09:42:32,185 INFO L129 PetriNetUnfolder]: 26647/33004 cut-off events. [2021-03-26 09:42:32,186 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-26 09:42:32,339 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66000 conditions, 33004 events. 26647/33004 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 3350. Compared 205871 event pairs, 21366 based on Foata normal form. 0/31412 useless extension candidates. Maximal degree in co-relation 65975. Up to 32953 conditions per place. [2021-03-26 09:42:32,996 INFO L142 LiptonReduction]: Number of co-enabled transitions 1492 [2021-03-26 09:42:36,208 INFO L154 LiptonReduction]: Checked pairs total: 1063 [2021-03-26 09:42:36,208 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 09:42:36,208 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5989 [2021-03-26 09:42:36,208 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 205 flow [2021-03-26 09:42:36,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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) [2021-03-26 09:42:36,209 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 09:42:36,209 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 09:42:36,209 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-26 09:42:36,209 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 09:42:36,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 09:42:36,209 INFO L82 PathProgramCache]: Analyzing trace with hash 2097477879, now seen corresponding path program 1 times [2021-03-26 09:42:36,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 09:42:36,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385672634] [2021-03-26 09:42:36,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 09:42:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 09:42:36,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 09:42:36,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 09:42:36,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 09:42:36,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 09:42:36,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 09:42:36,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385672634] [2021-03-26 09:42:36,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 09:42:36,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 09:42:36,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4138216] [2021-03-26 09:42:36,248 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 09:42:36,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 09:42:36,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 09:42:36,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 09:42:36,249 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 133 [2021-03-26 09:42:36,249 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 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) [2021-03-26 09:42:36,249 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 09:42:36,249 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 133 [2021-03-26 09:42:36,249 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 09:42:45,649 INFO L129 PetriNetUnfolder]: 69689/100526 cut-off events. [2021-03-26 09:42:45,649 INFO L130 PetriNetUnfolder]: For 113583/429092 co-relation queries the response was YES. [2021-03-26 09:42:46,285 INFO L84 FinitePrefix]: Finished finitePrefix Result has 204313 conditions, 100526 events. 69689/100526 cut-off events. For 113583/429092 co-relation queries the response was YES. Maximal size of possible extension queue 7313. Compared 842632 event pairs, 40358 based on Foata normal form. 61907/148266 useless extension candidates. Maximal degree in co-relation 204286. Up to 65499 conditions per place. [2021-03-26 09:42:46,729 INFO L132 encePairwiseOnDemand]: 117/133 looper letters, 25 selfloop transitions, 8 changer transitions 0/61 dead transitions. [2021-03-26 09:42:46,729 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 61 transitions, 271 flow [2021-03-26 09:42:46,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 09:42:46,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 09:42:46,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2021-03-26 09:42:46,730 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7418546365914787 [2021-03-26 09:42:46,730 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2021-03-26 09:42:46,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2021-03-26 09:42:46,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 09:42:46,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2021-03-26 09:42:46,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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) [2021-03-26 09:42:46,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 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) [2021-03-26 09:42:46,732 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 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) [2021-03-26 09:42:46,732 INFO L185 Difference]: Start difference. First operand has 65 places, 53 transitions, 205 flow. Second operand 3 states and 296 transitions. [2021-03-26 09:42:46,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 61 transitions, 271 flow [2021-03-26 09:42:46,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 61 transitions, 262 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 09:42:46,739 INFO L241 Difference]: Finished difference. Result has 59 places, 53 transitions, 220 flow [2021-03-26 09:42:46,739 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2021-03-26 09:42:46,739 INFO L343 CegarLoopForPetriNet]: 64 programPoint places, -5 predicate places. [2021-03-26 09:42:46,739 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 09:42:46,739 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 53 transitions, 220 flow [2021-03-26 09:42:46,739 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 53 transitions, 220 flow [2021-03-26 09:42:46,740 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 59 places, 53 transitions, 220 flow [2021-03-26 09:42:47,530 INFO L129 PetriNetUnfolder]: 7877/11456 cut-off events. [2021-03-26 09:42:47,531 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-26 09:42:47,593 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22912 conditions, 11456 events. 7877/11456 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 931. Compared 78456 event pairs, 4605 based on Foata normal form. 0/9415 useless extension candidates. Maximal degree in co-relation 22887. Up to 10389 conditions per place. [2021-03-26 09:42:47,716 INFO L142 LiptonReduction]: Number of co-enabled transitions 1324 [2021-03-26 09:42:47,845 INFO L154 LiptonReduction]: Checked pairs total: 384 [2021-03-26 09:42:47,845 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 09:42:47,845 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1106 [2021-03-26 09:42:47,846 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 220 flow [2021-03-26 09:42:47,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 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) [2021-03-26 09:42:47,846 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 09:42:47,846 INFO L263 CegarLoopForPetriNet]: trace histogram [9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 09:42:47,846 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-26 09:42:47,846 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 09:42:47,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 09:42:47,846 INFO L82 PathProgramCache]: Analyzing trace with hash 956181836, now seen corresponding path program 1 times [2021-03-26 09:42:47,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 09:42:47,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458861420] [2021-03-26 09:42:47,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 09:42:47,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 09:42:47,853 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 09:42:47,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 09:42:47,859 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 09:42:47,863 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 09:42:47,863 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 09:42:47,863 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-26 09:42:47,863 WARN L342 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 09:42:47,863 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2021-03-26 09:42:47,884 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,884 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,884 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,884 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,884 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,884 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,884 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,884 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,884 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,884 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,885 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,885 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,885 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,885 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,885 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,885 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,885 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,885 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,885 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,885 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,885 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,885 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,885 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,886 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,886 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,886 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,886 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,886 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,886 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,886 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,886 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,886 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,886 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,886 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,886 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,886 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,887 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,887 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,887 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,887 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,887 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,887 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,887 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,887 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,887 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,887 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,887 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,887 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,887 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,888 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,888 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,888 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,888 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,888 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,888 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,888 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,888 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,888 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,888 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,888 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,888 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,888 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,888 WARN L313 ript$VariableManager]: TermVariabe thr1Thread9of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,888 WARN L313 ript$VariableManager]: TermVariabe thr1Thread9of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,889 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,889 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,889 WARN L313 ript$VariableManager]: TermVariabe thr1Thread9of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,889 WARN L313 ript$VariableManager]: TermVariabe thr1Thread9of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,889 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,889 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,889 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,889 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,889 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,889 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,889 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,889 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,889 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,889 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,889 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,890 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,890 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,890 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,890 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,890 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,890 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,890 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,890 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,890 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,890 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,890 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,890 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,890 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,890 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,890 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,891 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,891 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,891 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,891 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,891 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,891 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,891 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,891 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,891 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,891 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,891 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,891 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,891 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,891 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,892 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,892 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,892 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,892 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,893 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,893 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,893 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,893 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,894 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,894 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,894 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,894 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,895 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,895 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,895 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,895 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,896 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,896 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,896 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,896 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,897 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,897 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,897 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,897 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,898 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,898 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,898 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,898 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,899 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,899 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,899 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,899 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,900 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,900 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,900 WARN L313 ript$VariableManager]: TermVariabe thr1Thread9of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,900 WARN L313 ript$VariableManager]: TermVariabe thr1Thread9of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 09:42:47,900 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 09:42:47,901 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-03-26 09:42:47,901 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 09:42:47,901 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 09:42:47,901 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 09:42:47,901 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 09:42:47,901 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 09:42:47,901 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 09:42:47,902 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 09:42:47,902 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 09:42:47,902 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 112 places, 94 transitions, 305 flow [2021-03-26 09:42:47,913 INFO L129 PetriNetUnfolder]: 10/174 cut-off events. [2021-03-26 09:42:47,913 INFO L130 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2021-03-26 09:42:47,913 INFO L84 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 174 events. 10/174 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 394 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 207. Up to 20 conditions per place. [2021-03-26 09:42:47,913 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 94 transitions, 305 flow [2021-03-26 09:42:47,914 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 94 transitions, 305 flow [2021-03-26 09:42:47,914 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 09:42:47,914 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 112 places, 94 transitions, 305 flow [2021-03-26 09:42:47,914 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 112 places, 94 transitions, 305 flow [2021-03-26 09:42:47,915 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 112 places, 94 transitions, 305 flow [2021-03-26 09:42:47,925 INFO L129 PetriNetUnfolder]: 10/174 cut-off events. [2021-03-26 09:42:47,926 INFO L130 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2021-03-26 09:42:47,926 INFO L84 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 174 events. 10/174 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 404 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 207. Up to 20 conditions per place. [2021-03-26 09:42:47,929 INFO L142 LiptonReduction]: Number of co-enabled transitions 5292 [2021-03-26 09:42:49,847 INFO L154 LiptonReduction]: Checked pairs total: 8161 [2021-03-26 09:42:49,848 INFO L156 LiptonReduction]: Total number of compositions: 51 [2021-03-26 09:42:49,848 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1934 [2021-03-26 09:42:49,849 INFO L129 PetriNetUnfolder]: 0/8 cut-off events. [2021-03-26 09:42:49,849 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 09:42:49,849 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 09:42:49,849 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-26 09:42:49,849 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 09:42:49,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 09:42:49,849 INFO L82 PathProgramCache]: Analyzing trace with hash 980376101, now seen corresponding path program 1 times [2021-03-26 09:42:49,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 09:42:49,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857662814] [2021-03-26 09:42:49,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 09:42:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 09:42:49,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 09:42:49,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 09:42:49,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 09:42:49,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857662814] [2021-03-26 09:42:49,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 09:42:49,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 09:42:49,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133828475] [2021-03-26 09:42:49,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 09:42:49,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 09:42:49,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 09:42:49,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 09:42:49,865 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 145 [2021-03-26 09:42:49,865 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 52 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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) [2021-03-26 09:42:49,865 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 09:42:49,865 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 145 [2021-03-26 09:42:49,865 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand