/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-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/14_spin2003.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 13:24:04,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 13:24:04,048 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 13:24:04,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 13:24:04,084 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 13:24:04,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 13:24:04,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 13:24:04,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 13:24:04,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 13:24:04,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 13:24:04,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 13:24:04,107 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 13:24:04,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 13:24:04,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 13:24:04,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 13:24:04,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 13:24:04,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 13:24:04,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 13:24:04,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 13:24:04,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 13:24:04,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 13:24:04,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 13:24:04,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 13:24:04,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 13:24:04,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 13:24:04,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 13:24:04,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 13:24:04,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 13:24:04,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 13:24:04,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 13:24:04,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 13:24:04,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 13:24:04,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 13:24:04,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 13:24:04,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 13:24:04,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 13:24:04,146 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-RepeatedSemanticLbe.epf [2021-03-25 13:24:04,182 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 13:24:04,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 13:24:04,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 13:24:04,185 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 13:24:04,186 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 13:24:04,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 13:24:04,186 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 13:24:04,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 13:24:04,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 13:24:04,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 13:24:04,187 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 13:24:04,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 13:24:04,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 13:24:04,187 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 13:24:04,188 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 13:24:04,188 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 13:24:04,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 13:24:04,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 13:24:04,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 13:24:04,188 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 13:24:04,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 13:24:04,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 13:24:04,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 13:24:04,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 13:24:04,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 13:24:04,189 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 13:24:04,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 13:24:04,190 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 13:24:04,190 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 13:24:04,190 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 13:24:04,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 13:24:04,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 13:24:04,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 13:24:04,506 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 13:24:04,506 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 13:24:04,507 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/14_spin2003.i [2021-03-25 13:24:04,566 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61661630d/7d6c0ee6f25648eb992ecccee8d61e1e/FLAG1b5e09794 [2021-03-25 13:24:05,002 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 13:24:05,003 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/14_spin2003.i [2021-03-25 13:24:05,016 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61661630d/7d6c0ee6f25648eb992ecccee8d61e1e/FLAG1b5e09794 [2021-03-25 13:24:05,321 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61661630d/7d6c0ee6f25648eb992ecccee8d61e1e [2021-03-25 13:24:05,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 13:24:05,343 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 13:24:05,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 13:24:05,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 13:24:05,350 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 13:24:05,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 01:24:05" (1/1) ... [2021-03-25 13:24:05,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ee4f124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:24:05, skipping insertion in model container [2021-03-25 13:24:05,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 01:24:05" (1/1) ... [2021-03-25 13:24:05,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 13:24:05,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 13:24:05,660 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/14_spin2003.i[30203,30216] [2021-03-25 13:24:05,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 13:24:05,670 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 13:24:05,700 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/14_spin2003.i[30203,30216] [2021-03-25 13:24:05,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 13:24:05,766 INFO L208 MainTranslator]: Completed translation [2021-03-25 13:24:05,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:24:05 WrapperNode [2021-03-25 13:24:05,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 13:24:05,770 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 13:24:05,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 13:24:05,770 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 13:24:05,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:24:05" (1/1) ... [2021-03-25 13:24:05,797 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:24:05" (1/1) ... [2021-03-25 13:24:05,815 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 13:24:05,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 13:24:05,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 13:24:05,816 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 13:24:05,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:24:05" (1/1) ... [2021-03-25 13:24:05,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:24:05" (1/1) ... [2021-03-25 13:24:05,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:24:05" (1/1) ... [2021-03-25 13:24:05,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:24:05" (1/1) ... [2021-03-25 13:24:05,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:24:05" (1/1) ... [2021-03-25 13:24:05,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:24:05" (1/1) ... [2021-03-25 13:24:05,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:24:05" (1/1) ... [2021-03-25 13:24:05,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 13:24:05,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 13:24:05,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 13:24:05,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 13:24:05,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:24:05" (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 [2021-03-25 13:24:05,919 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-03-25 13:24:05,920 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-03-25 13:24:05,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 13:24:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 13:24:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 13:24:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 13:24:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 13:24:05,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 13:24:05,923 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 13:24:06,357 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 13:24:06,357 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-03-25 13:24:06,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 01:24:06 BoogieIcfgContainer [2021-03-25 13:24:06,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 13:24:06,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 13:24:06,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 13:24:06,362 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 13:24:06,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 01:24:05" (1/3) ... [2021-03-25 13:24:06,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b89e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 01:24:06, skipping insertion in model container [2021-03-25 13:24:06,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:24:05" (2/3) ... [2021-03-25 13:24:06,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b89e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 01:24:06, skipping insertion in model container [2021-03-25 13:24:06,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 01:24:06" (3/3) ... [2021-03-25 13:24:06,364 INFO L111 eAbstractionObserver]: Analyzing ICFG 14_spin2003.i [2021-03-25 13:24:06,369 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 13:24:06,372 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 13:24:06,373 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 13:24:06,387 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:06,388 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:06,388 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:06,388 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:06,388 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:06,388 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:06,388 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:06,388 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:06,389 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:06,389 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:06,389 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:06,389 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:06,389 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:06,389 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:06,390 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:06,390 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:06,390 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:06,390 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:06,390 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:06,390 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:06,392 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:06,392 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:06,392 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:06,392 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:06,392 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:06,393 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:06,394 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 13:24:06,409 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-25 13:24:06,424 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 13:24:06,424 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 13:24:06,424 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 13:24:06,424 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 13:24:06,424 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 13:24:06,424 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 13:24:06,424 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 13:24:06,424 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 13:24:06,432 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 35 transitions, 75 flow [2021-03-25 13:24:06,452 INFO L129 PetriNetUnfolder]: 3/43 cut-off events. [2021-03-25 13:24:06,452 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 13:24:06,455 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 43 events. 3/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 52 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 21. Up to 4 conditions per place. [2021-03-25 13:24:06,455 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 35 transitions, 75 flow [2021-03-25 13:24:06,458 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 35 transitions, 75 flow [2021-03-25 13:24:06,459 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 13:24:06,469 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 35 transitions, 75 flow [2021-03-25 13:24:06,473 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 35 transitions, 75 flow [2021-03-25 13:24:06,473 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 35 transitions, 75 flow [2021-03-25 13:24:06,481 INFO L129 PetriNetUnfolder]: 3/43 cut-off events. [2021-03-25 13:24:06,481 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 13:24:06,482 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 43 events. 3/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 21. Up to 4 conditions per place. [2021-03-25 13:24:06,483 INFO L142 LiptonReduction]: Number of co-enabled transitions 240 [2021-03-25 13:24:07,301 INFO L154 LiptonReduction]: Checked pairs total: 108 [2021-03-25 13:24:07,301 INFO L156 LiptonReduction]: Total number of compositions: 21 [2021-03-25 13:24:07,303 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 845 [2021-03-25 13:24:07,311 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-03-25 13:24:07,311 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 13:24:07,312 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 13:24:07,312 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 13:24:07,312 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 13:24:07,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 13:24:07,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1556220311, now seen corresponding path program 1 times [2021-03-25 13:24:07,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 13:24:07,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814988856] [2021-03-25 13:24:07,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 13:24:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 13:24:07,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:24:07,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 13:24:07,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 13:24:07,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814988856] [2021-03-25 13:24:07,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 13:24:07,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-25 13:24:07,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960043098] [2021-03-25 13:24:07,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-25 13:24:07,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 13:24:07,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-25 13:24:07,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-25 13:24:07,468 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 56 [2021-03-25 13:24:07,469 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 41 flow. Second operand has 2 states, 2 states have (on average 47.5) internal successors, (95), 2 states have internal predecessors, (95), 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) [2021-03-25 13:24:07,470 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 13:24:07,470 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 56 [2021-03-25 13:24:07,471 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 13:24:07,476 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-03-25 13:24:07,476 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 13:24:07,476 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 15 events. 0/15 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 3/18 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 13:24:07,477 INFO L132 encePairwiseOnDemand]: 53/56 looper letters, 0 selfloop transitions, 0 changer transitions 0/13 dead transitions. [2021-03-25 13:24:07,477 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 13 transitions, 31 flow [2021-03-25 13:24:07,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-25 13:24:07,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-03-25 13:24:07,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 97 transitions. [2021-03-25 13:24:07,485 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8660714285714286 [2021-03-25 13:24:07,485 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 97 transitions. [2021-03-25 13:24:07,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 97 transitions. [2021-03-25 13:24:07,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 13:24:07,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 97 transitions. [2021-03-25 13:24:07,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 48.5) internal successors, (97), 2 states have internal predecessors, (97), 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) [2021-03-25 13:24:07,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-03-25 13:24:07,493 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-03-25 13:24:07,494 INFO L185 Difference]: Start difference. First operand has 20 places, 18 transitions, 41 flow. Second operand 2 states and 97 transitions. [2021-03-25 13:24:07,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 13 transitions, 31 flow [2021-03-25 13:24:07,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 13 transitions, 31 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-25 13:24:07,497 INFO L241 Difference]: Finished difference. Result has 17 places, 13 transitions, 31 flow [2021-03-25 13:24:07,498 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=31, PETRI_PLACES=17, PETRI_TRANSITIONS=13} [2021-03-25 13:24:07,499 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 13:24:07,499 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 13:24:07,499 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 13 transitions, 31 flow [2021-03-25 13:24:07,500 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 13 transitions, 31 flow [2021-03-25 13:24:07,500 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 16 places, 13 transitions, 31 flow [2021-03-25 13:24:07,505 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-03-25 13:24:07,505 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 13:24:07,505 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 15 events. 0/15 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 13:24:07,507 INFO L142 LiptonReduction]: Number of co-enabled transitions 32 [2021-03-25 13:24:07,935 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2021-03-25 13:24:08,107 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2021-03-25 13:24:08,322 INFO L154 LiptonReduction]: Checked pairs total: 18 [2021-03-25 13:24:08,323 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-25 13:24:08,323 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 824 [2021-03-25 13:24:08,325 INFO L480 AbstractCegarLoop]: Abstraction has has 10 places, 7 transitions, 19 flow [2021-03-25 13:24:08,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 47.5) internal successors, (95), 2 states have internal predecessors, (95), 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) [2021-03-25 13:24:08,325 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 13:24:08,325 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 13:24:08,325 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 13:24:08,326 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 13:24:08,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 13:24:08,327 INFO L82 PathProgramCache]: Analyzing trace with hash 877572298, now seen corresponding path program 1 times [2021-03-25 13:24:08,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 13:24:08,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230721618] [2021-03-25 13:24:08,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 13:24:08,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 13:24:08,368 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 13:24:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 13:24:08,392 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 13:24:08,426 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 13:24:08,426 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 13:24:08,427 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 13:24:08,428 WARN L342 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-25 13:24:08,428 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-03-25 13:24:08,439 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,440 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,440 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,440 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,440 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,440 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,441 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,441 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,441 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,441 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,441 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,441 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,441 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,442 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,442 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,442 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,442 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,442 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,442 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,442 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,443 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,443 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,443 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,443 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,444 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,444 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,444 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,444 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,444 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,444 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,445 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,445 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,445 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,445 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,445 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,445 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,446 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,446 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,446 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,446 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,446 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,446 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,447 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,447 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,447 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,447 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,448 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,448 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,448 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,449 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,449 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,449 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:08,450 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 13:24:08,450 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 13:24:08,452 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 13:24:08,452 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 13:24:08,452 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 13:24:08,452 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 13:24:08,452 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 13:24:08,452 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 13:24:08,452 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 13:24:08,453 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 13:24:08,456 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 108 flow [2021-03-25 13:24:08,471 INFO L129 PetriNetUnfolder]: 5/65 cut-off events. [2021-03-25 13:24:08,471 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 13:24:08,473 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 5/65 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 128 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 44. Up to 6 conditions per place. [2021-03-25 13:24:08,473 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 48 transitions, 108 flow [2021-03-25 13:24:08,475 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 48 transitions, 108 flow [2021-03-25 13:24:08,475 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 13:24:08,475 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 50 places, 48 transitions, 108 flow [2021-03-25 13:24:08,476 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 50 places, 48 transitions, 108 flow [2021-03-25 13:24:08,477 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 108 flow [2021-03-25 13:24:08,494 INFO L129 PetriNetUnfolder]: 5/65 cut-off events. [2021-03-25 13:24:08,495 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 13:24:08,496 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 5/65 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 130 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 44. Up to 6 conditions per place. [2021-03-25 13:24:08,497 INFO L142 LiptonReduction]: Number of co-enabled transitions 792 [2021-03-25 13:24:09,246 INFO L154 LiptonReduction]: Checked pairs total: 1357 [2021-03-25 13:24:09,246 INFO L156 LiptonReduction]: Total number of compositions: 28 [2021-03-25 13:24:09,247 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 772 [2021-03-25 13:24:09,250 INFO L129 PetriNetUnfolder]: 1/21 cut-off events. [2021-03-25 13:24:09,250 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 13:24:09,250 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 13:24:09,250 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 13:24:09,250 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 13:24:09,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 13:24:09,251 INFO L82 PathProgramCache]: Analyzing trace with hash 386731672, now seen corresponding path program 1 times [2021-03-25 13:24:09,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 13:24:09,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070688755] [2021-03-25 13:24:09,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 13:24:09,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 13:24:09,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:24:09,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 13:24:09,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:24:09,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 13:24:09,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 13:24:09,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070688755] [2021-03-25 13:24:09,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 13:24:09,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 13:24:09,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104705958] [2021-03-25 13:24:09,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 13:24:09,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 13:24:09,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 13:24:09,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 13:24:09,308 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 76 [2021-03-25 13:24:09,308 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2021-03-25 13:24:09,308 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 13:24:09,308 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 76 [2021-03-25 13:24:09,308 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 13:24:09,345 INFO L129 PetriNetUnfolder]: 11/61 cut-off events. [2021-03-25 13:24:09,345 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 13:24:09,346 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 61 events. 11/61 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 158 event pairs, 2 based on Foata normal form. 29/86 useless extension candidates. Maximal degree in co-relation 85. Up to 25 conditions per place. [2021-03-25 13:24:09,346 INFO L132 encePairwiseOnDemand]: 66/76 looper letters, 10 selfloop transitions, 5 changer transitions 0/28 dead transitions. [2021-03-25 13:24:09,346 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 28 transitions, 98 flow [2021-03-25 13:24:09,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 13:24:09,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 13:24:09,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 167 transitions. [2021-03-25 13:24:09,353 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7324561403508771 [2021-03-25 13:24:09,353 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 167 transitions. [2021-03-25 13:24:09,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 167 transitions. [2021-03-25 13:24:09,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 13:24:09,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 167 transitions. [2021-03-25 13:24:09,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2021-03-25 13:24:09,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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) [2021-03-25 13:24:09,361 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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) [2021-03-25 13:24:09,361 INFO L185 Difference]: Start difference. First operand has 30 places, 27 transitions, 66 flow. Second operand 3 states and 167 transitions. [2021-03-25 13:24:09,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 28 transitions, 98 flow [2021-03-25 13:24:09,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 96 flow, removed 1 selfloop flow, removed 0 redundant places. [2021-03-25 13:24:09,362 INFO L241 Difference]: Finished difference. Result has 31 places, 26 transitions, 94 flow [2021-03-25 13:24:09,363 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2021-03-25 13:24:09,363 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2021-03-25 13:24:09,363 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 13:24:09,364 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 26 transitions, 94 flow [2021-03-25 13:24:09,364 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 26 transitions, 94 flow [2021-03-25 13:24:09,364 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 26 transitions, 94 flow [2021-03-25 13:24:09,373 INFO L129 PetriNetUnfolder]: 4/49 cut-off events. [2021-03-25 13:24:09,373 INFO L130 PetriNetUnfolder]: For 8/10 co-relation queries the response was YES. [2021-03-25 13:24:09,374 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 49 events. 4/49 cut-off events. For 8/10 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 111 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 69. Up to 11 conditions per place. [2021-03-25 13:24:09,375 INFO L142 LiptonReduction]: Number of co-enabled transitions 188 [2021-03-25 13:24:09,653 INFO L154 LiptonReduction]: Checked pairs total: 213 [2021-03-25 13:24:09,653 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 13:24:09,653 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 290 [2021-03-25 13:24:09,654 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 90 flow [2021-03-25 13:24:09,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2021-03-25 13:24:09,655 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 13:24:09,655 INFO L263 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 13:24:09,655 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 13:24:09,655 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 13:24:09,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 13:24:09,656 INFO L82 PathProgramCache]: Analyzing trace with hash 876377676, now seen corresponding path program 1 times [2021-03-25 13:24:09,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 13:24:09,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433935156] [2021-03-25 13:24:09,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 13:24:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 13:24:09,691 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 13:24:09,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 13:24:09,699 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 13:24:09,712 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 13:24:09,712 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 13:24:09,712 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 13:24:09,712 WARN L342 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-25 13:24:09,713 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-03-25 13:24:09,722 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,722 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,722 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,722 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,723 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,723 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,723 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,723 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,723 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,723 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,723 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,723 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,724 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,724 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,724 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,724 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,724 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,724 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,724 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,724 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,725 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,725 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,725 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,725 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,725 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,725 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,725 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,725 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,725 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,726 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,726 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,726 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,727 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,727 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,727 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,727 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,727 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,728 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,728 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,728 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,729 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,729 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,729 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,729 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,729 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,730 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,730 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,730 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,730 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,730 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,730 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,730 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,730 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,730 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,731 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,731 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,731 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,731 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,731 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,731 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,731 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,731 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,732 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,732 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,732 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,732 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,734 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,735 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,735 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,740 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,740 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,741 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,741 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,741 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,742 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,743 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,743 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:09,743 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 13:24:09,744 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-25 13:24:09,745 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 13:24:09,745 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 13:24:09,745 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 13:24:09,745 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 13:24:09,745 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 13:24:09,745 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 13:24:09,745 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 13:24:09,745 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 13:24:09,747 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 61 transitions, 143 flow [2021-03-25 13:24:09,758 INFO L129 PetriNetUnfolder]: 7/87 cut-off events. [2021-03-25 13:24:09,758 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-25 13:24:09,760 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 87 events. 7/87 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 199 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 69. Up to 8 conditions per place. [2021-03-25 13:24:09,760 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 61 transitions, 143 flow [2021-03-25 13:24:09,761 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 61 transitions, 143 flow [2021-03-25 13:24:09,761 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 13:24:09,761 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 61 transitions, 143 flow [2021-03-25 13:24:09,762 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 61 transitions, 143 flow [2021-03-25 13:24:09,762 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 61 transitions, 143 flow [2021-03-25 13:24:09,773 INFO L129 PetriNetUnfolder]: 7/87 cut-off events. [2021-03-25 13:24:09,774 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-25 13:24:09,774 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 87 events. 7/87 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 205 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 69. Up to 8 conditions per place. [2021-03-25 13:24:09,776 INFO L142 LiptonReduction]: Number of co-enabled transitions 1656 [2021-03-25 13:24:10,801 INFO L154 LiptonReduction]: Checked pairs total: 3151 [2021-03-25 13:24:10,802 INFO L156 LiptonReduction]: Total number of compositions: 35 [2021-03-25 13:24:10,802 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1041 [2021-03-25 13:24:10,806 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-25 13:24:10,806 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 13:24:10,806 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 13:24:10,806 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 13:24:10,806 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 13:24:10,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 13:24:10,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1244329701, now seen corresponding path program 1 times [2021-03-25 13:24:10,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 13:24:10,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838871744] [2021-03-25 13:24:10,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 13:24:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 13:24:10,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:24:10,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 13:24:10,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:24:10,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 13:24:10,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 13:24:10,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838871744] [2021-03-25 13:24:10,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 13:24:10,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 13:24:10,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716992427] [2021-03-25 13:24:10,848 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 13:24:10,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 13:24:10,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 13:24:10,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 13:24:10,852 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 96 [2021-03-25 13:24:10,853 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 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) [2021-03-25 13:24:10,853 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 13:24:10,853 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 96 [2021-03-25 13:24:10,853 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 13:24:10,922 INFO L129 PetriNetUnfolder]: 171/402 cut-off events. [2021-03-25 13:24:10,922 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-25 13:24:10,923 INFO L84 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 402 events. 171/402 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2105 event pairs, 46 based on Foata normal form. 165/532 useless extension candidates. Maximal degree in co-relation 716. Up to 199 conditions per place. [2021-03-25 13:24:10,925 INFO L132 encePairwiseOnDemand]: 82/96 looper letters, 15 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2021-03-25 13:24:10,925 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 38 transitions, 141 flow [2021-03-25 13:24:10,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 13:24:10,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 13:24:10,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 207 transitions. [2021-03-25 13:24:10,927 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.71875 [2021-03-25 13:24:10,927 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 207 transitions. [2021-03-25 13:24:10,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 207 transitions. [2021-03-25 13:24:10,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 13:24:10,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 207 transitions. [2021-03-25 13:24:10,928 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) [2021-03-25 13:24:10,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 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) [2021-03-25 13:24:10,931 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 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) [2021-03-25 13:24:10,931 INFO L185 Difference]: Start difference. First operand has 41 places, 37 transitions, 95 flow. Second operand 3 states and 207 transitions. [2021-03-25 13:24:10,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 38 transitions, 141 flow [2021-03-25 13:24:10,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 38 transitions, 135 flow, removed 3 selfloop flow, removed 0 redundant places. [2021-03-25 13:24:10,932 INFO L241 Difference]: Finished difference. Result has 40 places, 35 transitions, 131 flow [2021-03-25 13:24:10,932 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2021-03-25 13:24:10,933 INFO L343 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2021-03-25 13:24:10,933 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 13:24:10,933 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 35 transitions, 131 flow [2021-03-25 13:24:10,933 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 35 transitions, 131 flow [2021-03-25 13:24:10,933 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 35 transitions, 131 flow [2021-03-25 13:24:10,950 INFO L129 PetriNetUnfolder]: 61/231 cut-off events. [2021-03-25 13:24:10,950 INFO L130 PetriNetUnfolder]: For 37/45 co-relation queries the response was YES. [2021-03-25 13:24:10,951 INFO L84 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 231 events. 61/231 cut-off events. For 37/45 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1240 event pairs, 21 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 431. Up to 70 conditions per place. [2021-03-25 13:24:10,953 INFO L142 LiptonReduction]: Number of co-enabled transitions 468 [2021-03-25 13:24:11,389 INFO L154 LiptonReduction]: Checked pairs total: 504 [2021-03-25 13:24:11,390 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 13:24:11,390 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 457 [2021-03-25 13:24:11,391 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 127 flow [2021-03-25 13:24:11,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 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) [2021-03-25 13:24:11,392 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 13:24:11,392 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 13:24:11,392 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 13:24:11,393 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 13:24:11,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 13:24:11,393 INFO L82 PathProgramCache]: Analyzing trace with hash -841389142, now seen corresponding path program 1 times [2021-03-25 13:24:11,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 13:24:11,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989110863] [2021-03-25 13:24:11,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 13:24:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 13:24:11,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:24:11,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 13:24:11,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:24:11,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 13:24:11,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:24:11,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 13:24:11,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 13:24:11,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989110863] [2021-03-25 13:24:11,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 13:24:11,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 13:24:11,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920681566] [2021-03-25 13:24:11,461 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 13:24:11,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 13:24:11,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 13:24:11,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 13:24:11,462 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 98 [2021-03-25 13:24:11,462 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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) [2021-03-25 13:24:11,462 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 13:24:11,462 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 98 [2021-03-25 13:24:11,462 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 13:24:11,485 INFO L129 PetriNetUnfolder]: 5/77 cut-off events. [2021-03-25 13:24:11,486 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2021-03-25 13:24:11,486 INFO L84 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 77 events. 5/77 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 202 event pairs, 5 based on Foata normal form. 11/87 useless extension candidates. Maximal degree in co-relation 144. Up to 14 conditions per place. [2021-03-25 13:24:11,486 INFO L132 encePairwiseOnDemand]: 92/98 looper letters, 1 selfloop transitions, 6 changer transitions 0/24 dead transitions. [2021-03-25 13:24:11,486 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 24 transitions, 105 flow [2021-03-25 13:24:11,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 13:24:11,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 13:24:11,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 190 transitions. [2021-03-25 13:24:11,487 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6462585034013606 [2021-03-25 13:24:11,488 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 190 transitions. [2021-03-25 13:24:11,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 190 transitions. [2021-03-25 13:24:11,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 13:24:11,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 190 transitions. [2021-03-25 13:24:11,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 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) [2021-03-25 13:24:11,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 13:24:11,490 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 13:24:11,490 INFO L185 Difference]: Start difference. First operand has 38 places, 33 transitions, 127 flow. Second operand 3 states and 190 transitions. [2021-03-25 13:24:11,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 24 transitions, 105 flow [2021-03-25 13:24:11,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 24 transitions, 77 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 13:24:11,492 INFO L241 Difference]: Finished difference. Result has 33 places, 24 transitions, 75 flow [2021-03-25 13:24:11,492 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2021-03-25 13:24:11,492 INFO L343 CegarLoopForPetriNet]: 41 programPoint places, -8 predicate places. [2021-03-25 13:24:11,493 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 13:24:11,493 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 24 transitions, 75 flow [2021-03-25 13:24:11,493 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 24 transitions, 75 flow [2021-03-25 13:24:11,493 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 24 transitions, 75 flow [2021-03-25 13:24:11,504 INFO L129 PetriNetUnfolder]: 5/77 cut-off events. [2021-03-25 13:24:11,504 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 13:24:11,504 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 77 events. 5/77 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 200 event pairs, 5 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 96. Up to 13 conditions per place. [2021-03-25 13:24:11,505 INFO L142 LiptonReduction]: Number of co-enabled transitions 150 [2021-03-25 13:24:11,925 INFO L154 LiptonReduction]: Checked pairs total: 39 [2021-03-25 13:24:11,925 INFO L156 LiptonReduction]: Total number of compositions: 9 [2021-03-25 13:24:11,925 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 432 [2021-03-25 13:24:11,926 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 15 transitions, 57 flow [2021-03-25 13:24:11,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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) [2021-03-25 13:24:11,926 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 13:24:11,926 INFO L263 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1] [2021-03-25 13:24:11,926 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 13:24:11,926 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 13:24:11,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 13:24:11,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1032202815, now seen corresponding path program 1 times [2021-03-25 13:24:11,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 13:24:11,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985045860] [2021-03-25 13:24:11,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 13:24:11,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 13:24:11,935 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 13:24:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 13:24:11,941 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 13:24:11,945 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 13:24:11,945 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 13:24:11,945 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 13:24:11,945 WARN L342 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-25 13:24:11,945 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2021-03-25 13:24:11,953 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,953 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,953 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,953 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,953 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,953 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,953 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,953 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,953 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,953 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,954 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,954 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,954 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,954 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,954 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,954 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,954 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,954 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,954 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,954 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,954 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,954 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,955 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,955 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,955 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,955 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,955 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,955 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,955 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,955 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,955 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,955 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,955 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,955 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,956 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,956 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,956 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,956 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,956 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,956 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,956 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,956 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,956 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,956 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,956 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,956 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,956 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,956 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,957 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,957 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,957 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,957 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,957 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,957 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,957 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,957 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,957 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,957 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,957 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,958 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,958 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,958 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,958 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,958 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,958 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,958 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,958 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,958 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,958 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,958 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,958 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,958 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,959 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,959 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,959 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,959 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,959 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,959 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,959 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,959 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,959 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,960 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,960 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,960 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,960 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,960 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,961 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,961 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,961 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,961 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,961 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,961 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,962 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,962 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,962 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,962 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,962 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,962 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,963 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,963 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,963 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,963 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,963 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,963 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:11,964 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 13:24:11,964 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-25 13:24:11,965 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 13:24:11,965 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 13:24:11,965 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 13:24:11,965 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 13:24:11,965 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 13:24:11,965 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 13:24:11,966 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 13:24:11,966 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 13:24:11,966 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 78 places, 74 transitions, 180 flow [2021-03-25 13:24:11,973 INFO L129 PetriNetUnfolder]: 9/109 cut-off events. [2021-03-25 13:24:11,973 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-03-25 13:24:11,974 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 109 events. 9/109 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 278 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 95. Up to 10 conditions per place. [2021-03-25 13:24:11,974 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 74 transitions, 180 flow [2021-03-25 13:24:11,975 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 74 transitions, 180 flow [2021-03-25 13:24:11,975 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 13:24:11,975 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 74 transitions, 180 flow [2021-03-25 13:24:11,975 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 74 transitions, 180 flow [2021-03-25 13:24:11,975 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 78 places, 74 transitions, 180 flow [2021-03-25 13:24:11,982 INFO L129 PetriNetUnfolder]: 9/109 cut-off events. [2021-03-25 13:24:11,982 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-03-25 13:24:11,982 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 109 events. 9/109 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 279 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 95. Up to 10 conditions per place. [2021-03-25 13:24:11,984 INFO L142 LiptonReduction]: Number of co-enabled transitions 2832 [2021-03-25 13:24:13,212 INFO L154 LiptonReduction]: Checked pairs total: 5730 [2021-03-25 13:24:13,212 INFO L156 LiptonReduction]: Total number of compositions: 42 [2021-03-25 13:24:13,212 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1237 [2021-03-25 13:24:13,214 INFO L129 PetriNetUnfolder]: 1/20 cut-off events. [2021-03-25 13:24:13,214 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 13:24:13,214 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 13:24:13,215 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 13:24:13,215 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 13:24:13,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 13:24:13,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1718828696, now seen corresponding path program 1 times [2021-03-25 13:24:13,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 13:24:13,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320686495] [2021-03-25 13:24:13,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 13:24:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 13:24:13,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:24:13,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 13:24:13,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:24:13,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 13:24:13,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 13:24:13,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320686495] [2021-03-25 13:24:13,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 13:24:13,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 13:24:13,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338611788] [2021-03-25 13:24:13,231 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 13:24:13,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 13:24:13,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 13:24:13,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 13:24:13,232 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 116 [2021-03-25 13:24:13,232 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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) [2021-03-25 13:24:13,232 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 13:24:13,232 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 116 [2021-03-25 13:24:13,232 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 13:24:13,487 INFO L129 PetriNetUnfolder]: 1607/2825 cut-off events. [2021-03-25 13:24:13,487 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-03-25 13:24:13,495 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5370 conditions, 2825 events. 1607/2825 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 18428 event pairs, 554 based on Foata normal form. 921/3465 useless extension candidates. Maximal degree in co-relation 5325. Up to 1393 conditions per place. [2021-03-25 13:24:13,511 INFO L132 encePairwiseOnDemand]: 98/116 looper letters, 20 selfloop transitions, 9 changer transitions 0/48 dead transitions. [2021-03-25 13:24:13,511 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 48 transitions, 186 flow [2021-03-25 13:24:13,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 13:24:13,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 13:24:13,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2021-03-25 13:24:13,513 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7097701149425287 [2021-03-25 13:24:13,513 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2021-03-25 13:24:13,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2021-03-25 13:24:13,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 13:24:13,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2021-03-25 13:24:13,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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) [2021-03-25 13:24:13,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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) [2021-03-25 13:24:13,515 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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) [2021-03-25 13:24:13,515 INFO L185 Difference]: Start difference. First operand has 51 places, 46 transitions, 124 flow. Second operand 3 states and 247 transitions. [2021-03-25 13:24:13,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 48 transitions, 186 flow [2021-03-25 13:24:13,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 48 transitions, 174 flow, removed 6 selfloop flow, removed 0 redundant places. [2021-03-25 13:24:13,517 INFO L241 Difference]: Finished difference. Result has 49 places, 44 transitions, 168 flow [2021-03-25 13:24:13,517 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2021-03-25 13:24:13,517 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2021-03-25 13:24:13,517 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 13:24:13,517 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 44 transitions, 168 flow [2021-03-25 13:24:13,517 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 44 transitions, 168 flow [2021-03-25 13:24:13,518 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 44 transitions, 168 flow [2021-03-25 13:24:13,583 INFO L129 PetriNetUnfolder]: 502/1229 cut-off events. [2021-03-25 13:24:13,583 INFO L130 PetriNetUnfolder]: For 212/283 co-relation queries the response was YES. [2021-03-25 13:24:13,587 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2510 conditions, 1229 events. 502/1229 cut-off events. For 212/283 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 8987 event pairs, 142 based on Foata normal form. 0/1207 useless extension candidates. Maximal degree in co-relation 2485. Up to 449 conditions per place. [2021-03-25 13:24:13,599 INFO L142 LiptonReduction]: Number of co-enabled transitions 814 [2021-03-25 13:24:14,603 INFO L154 LiptonReduction]: Checked pairs total: 792 [2021-03-25 13:24:14,603 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 13:24:14,603 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1086 [2021-03-25 13:24:14,604 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 164 flow [2021-03-25 13:24:14,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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) [2021-03-25 13:24:14,604 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 13:24:14,604 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 13:24:14,604 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 13:24:14,605 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 13:24:14,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 13:24:14,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1555729358, now seen corresponding path program 1 times [2021-03-25 13:24:14,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 13:24:14,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68762603] [2021-03-25 13:24:14,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 13:24:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 13:24:14,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:24:14,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 13:24:14,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:24:14,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 13:24:14,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:24:14,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 13:24:14,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 13:24:14,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68762603] [2021-03-25 13:24:14,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 13:24:14,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 13:24:14,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734590667] [2021-03-25 13:24:14,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 13:24:14,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 13:24:14,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 13:24:14,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 13:24:14,640 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 118 [2021-03-25 13:24:14,640 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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) [2021-03-25 13:24:14,640 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 13:24:14,640 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 118 [2021-03-25 13:24:14,640 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 13:24:14,674 INFO L129 PetriNetUnfolder]: 17/181 cut-off events. [2021-03-25 13:24:14,675 INFO L130 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2021-03-25 13:24:14,675 INFO L84 FinitePrefix]: Finished finitePrefix Result has 396 conditions, 181 events. 17/181 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 812 event pairs, 17 based on Foata normal form. 43/221 useless extension candidates. Maximal degree in co-relation 371. Up to 34 conditions per place. [2021-03-25 13:24:14,675 INFO L132 encePairwiseOnDemand]: 110/118 looper letters, 1 selfloop transitions, 8 changer transitions 0/30 dead transitions. [2021-03-25 13:24:14,676 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 30 transitions, 134 flow [2021-03-25 13:24:14,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 13:24:14,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 13:24:14,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2021-03-25 13:24:14,677 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6299435028248588 [2021-03-25 13:24:14,677 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 223 transitions. [2021-03-25 13:24:14,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 223 transitions. [2021-03-25 13:24:14,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 13:24:14,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 223 transitions. [2021-03-25 13:24:14,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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) [2021-03-25 13:24:14,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 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) [2021-03-25 13:24:14,679 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 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) [2021-03-25 13:24:14,679 INFO L185 Difference]: Start difference. First operand has 47 places, 42 transitions, 164 flow. Second operand 3 states and 223 transitions. [2021-03-25 13:24:14,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 30 transitions, 134 flow [2021-03-25 13:24:14,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 30 transitions, 98 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 13:24:14,683 INFO L241 Difference]: Finished difference. Result has 41 places, 30 transitions, 96 flow [2021-03-25 13:24:14,683 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2021-03-25 13:24:14,683 INFO L343 CegarLoopForPetriNet]: 51 programPoint places, -10 predicate places. [2021-03-25 13:24:14,684 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 13:24:14,684 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 30 transitions, 96 flow [2021-03-25 13:24:14,684 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 30 transitions, 96 flow [2021-03-25 13:24:14,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 30 transitions, 96 flow [2021-03-25 13:24:14,694 INFO L129 PetriNetUnfolder]: 17/181 cut-off events. [2021-03-25 13:24:14,694 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 13:24:14,694 INFO L84 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 181 events. 17/181 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 823 event pairs, 17 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 243. Up to 33 conditions per place. [2021-03-25 13:24:14,695 INFO L142 LiptonReduction]: Number of co-enabled transitions 220 [2021-03-25 13:24:15,278 INFO L154 LiptonReduction]: Checked pairs total: 57 [2021-03-25 13:24:15,278 INFO L156 LiptonReduction]: Total number of compositions: 12 [2021-03-25 13:24:15,279 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 595 [2021-03-25 13:24:15,279 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 18 transitions, 70 flow [2021-03-25 13:24:15,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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) [2021-03-25 13:24:15,279 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 13:24:15,280 INFO L263 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 13:24:15,280 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 13:24:15,280 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 13:24:15,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 13:24:15,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1993746883, now seen corresponding path program 1 times [2021-03-25 13:24:15,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 13:24:15,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45910873] [2021-03-25 13:24:15,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 13:24:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 13:24:15,291 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 13:24:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 13:24:15,303 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 13:24:15,312 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 13:24:15,312 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 13:24:15,312 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-25 13:24:15,313 WARN L342 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-25 13:24:15,313 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2021-03-25 13:24:15,324 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,324 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,324 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,324 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,324 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,324 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,324 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,324 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,325 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,325 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,325 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,325 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,328 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,329 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,329 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,329 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,329 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,329 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,329 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,329 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,329 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,329 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,330 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,330 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,330 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,330 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,330 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,330 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,330 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,330 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,330 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,330 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,330 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,330 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,330 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,330 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,330 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,331 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,331 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,331 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,331 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,331 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,331 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,331 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,331 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,331 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,331 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,331 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,331 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,331 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,331 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,331 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,332 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,332 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,332 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,332 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,332 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,332 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,332 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,332 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,332 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,332 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,332 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,332 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,332 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,332 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,333 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,333 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,333 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,333 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,333 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,333 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,333 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,334 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,334 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,334 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,334 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,334 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,334 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,334 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,334 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,334 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,334 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,334 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,335 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,335 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,335 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,335 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,335 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,335 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,335 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,335 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,335 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,335 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,335 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,335 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,335 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,335 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,335 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,336 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,336 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,336 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,336 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,336 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,336 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,336 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,337 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,337 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,337 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,337 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,337 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,337 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,338 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,338 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,338 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,338 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,339 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,339 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,339 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,340 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,340 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,340 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,340 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,340 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,341 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,341 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,341 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,341 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,341 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,341 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:15,342 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 13:24:15,342 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-03-25 13:24:15,344 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 13:24:15,344 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 13:24:15,344 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 13:24:15,344 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 13:24:15,344 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 13:24:15,344 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 13:24:15,344 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 13:24:15,344 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 13:24:15,347 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 87 transitions, 219 flow [2021-03-25 13:24:15,356 INFO L129 PetriNetUnfolder]: 11/131 cut-off events. [2021-03-25 13:24:15,356 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2021-03-25 13:24:15,357 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 131 events. 11/131 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 338 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 122. Up to 12 conditions per place. [2021-03-25 13:24:15,357 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 87 transitions, 219 flow [2021-03-25 13:24:15,358 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 87 transitions, 219 flow [2021-03-25 13:24:15,358 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 13:24:15,358 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 87 transitions, 219 flow [2021-03-25 13:24:15,358 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 87 transitions, 219 flow [2021-03-25 13:24:15,359 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 87 transitions, 219 flow [2021-03-25 13:24:15,366 INFO L129 PetriNetUnfolder]: 11/131 cut-off events. [2021-03-25 13:24:15,367 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2021-03-25 13:24:15,367 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 131 events. 11/131 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 356 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 122. Up to 12 conditions per place. [2021-03-25 13:24:15,370 INFO L142 LiptonReduction]: Number of co-enabled transitions 4320 [2021-03-25 13:24:16,772 INFO L154 LiptonReduction]: Checked pairs total: 7824 [2021-03-25 13:24:16,772 INFO L156 LiptonReduction]: Total number of compositions: 49 [2021-03-25 13:24:16,773 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1415 [2021-03-25 13:24:16,774 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-03-25 13:24:16,774 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 13:24:16,774 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 13:24:16,775 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 13:24:16,776 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]=== [2021-03-25 13:24:16,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 13:24:16,776 INFO L82 PathProgramCache]: Analyzing trace with hash -871343764, now seen corresponding path program 1 times [2021-03-25 13:24:16,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 13:24:16,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657697478] [2021-03-25 13:24:16,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 13:24:16,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 13:24:16,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:24:16,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 13:24:16,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:24:16,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 13:24:16,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 13:24:16,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657697478] [2021-03-25 13:24:16,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 13:24:16,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 13:24:16,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833602516] [2021-03-25 13:24:16,798 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 13:24:16,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 13:24:16,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 13:24:16,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 13:24:16,799 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 136 [2021-03-25 13:24:16,800 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 141 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) [2021-03-25 13:24:16,800 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 13:24:16,800 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 136 [2021-03-25 13:24:16,800 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 13:24:18,491 INFO L129 PetriNetUnfolder]: 12247/18727 cut-off events. [2021-03-25 13:24:18,491 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2021-03-25 13:24:18,551 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35990 conditions, 18727 events. 12247/18727 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 1053. Compared 133944 event pairs, 4752 based on Foata normal form. 4993/21745 useless extension candidates. Maximal degree in co-relation 35933. Up to 8971 conditions per place. [2021-03-25 13:24:18,730 INFO L132 encePairwiseOnDemand]: 117/136 looper letters, 25 selfloop transitions, 11 changer transitions 0/58 dead transitions. [2021-03-25 13:24:18,730 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 58 transitions, 233 flow [2021-03-25 13:24:18,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 13:24:18,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 13:24:18,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2021-03-25 13:24:18,732 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6887254901960784 [2021-03-25 13:24:18,732 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 281 transitions. [2021-03-25 13:24:18,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 281 transitions. [2021-03-25 13:24:18,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 13:24:18,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 281 transitions. [2021-03-25 13:24:18,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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) [2021-03-25 13:24:18,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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) [2021-03-25 13:24:18,734 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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) [2021-03-25 13:24:18,734 INFO L185 Difference]: Start difference. First operand has 57 places, 48 transitions, 141 flow. Second operand 3 states and 281 transitions. [2021-03-25 13:24:18,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 58 transitions, 233 flow [2021-03-25 13:24:18,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 58 transitions, 213 flow, removed 10 selfloop flow, removed 0 redundant places. [2021-03-25 13:24:18,736 INFO L241 Difference]: Finished difference. Result has 58 places, 53 transitions, 205 flow [2021-03-25 13:24:18,736 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=205, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2021-03-25 13:24:18,736 INFO L343 CegarLoopForPetriNet]: 57 programPoint places, 1 predicate places. [2021-03-25 13:24:18,736 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 13:24:18,737 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 53 transitions, 205 flow [2021-03-25 13:24:18,737 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 53 transitions, 205 flow [2021-03-25 13:24:18,737 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 53 transitions, 205 flow [2021-03-25 13:24:19,183 INFO L129 PetriNetUnfolder]: 3223/6379 cut-off events. [2021-03-25 13:24:19,183 INFO L130 PetriNetUnfolder]: For 1193/2431 co-relation queries the response was YES. [2021-03-25 13:24:19,200 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13349 conditions, 6379 events. 3223/6379 cut-off events. For 1193/2431 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 53767 event pairs, 1153 based on Foata normal form. 0/6268 useless extension candidates. Maximal degree in co-relation 13323. Up to 2631 conditions per place. [2021-03-25 13:24:19,260 INFO L142 LiptonReduction]: Number of co-enabled transitions 1254 [2021-03-25 13:24:57,344 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-03-25 13:25:21,180 INFO L154 LiptonReduction]: Checked pairs total: 1248 [2021-03-25 13:25:21,180 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 13:25:21,180 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 62444 [2021-03-25 13:25:21,180 INFO L480 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 201 flow [2021-03-25 13:25:21,181 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) [2021-03-25 13:25:21,181 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 13:25:21,181 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 13:25:21,181 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-25 13:25:21,181 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]=== [2021-03-25 13:25:21,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 13:25:21,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1917642374, now seen corresponding path program 1 times [2021-03-25 13:25:21,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 13:25:21,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646128803] [2021-03-25 13:25:21,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 13:25:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 13:25:21,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:25:21,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 13:25:21,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:25:21,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 13:25:21,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:25:21,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 13:25:21,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 13:25:21,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646128803] [2021-03-25 13:25:21,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 13:25:21,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 13:25:21,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934231096] [2021-03-25 13:25:21,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 13:25:21,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 13:25:21,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 13:25:21,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 13:25:21,203 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 138 [2021-03-25 13:25:21,203 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 201 flow. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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) [2021-03-25 13:25:21,203 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 13:25:21,203 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 138 [2021-03-25 13:25:21,203 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 13:25:21,249 INFO L129 PetriNetUnfolder]: 49/425 cut-off events. [2021-03-25 13:25:21,250 INFO L130 PetriNetUnfolder]: For 87/87 co-relation queries the response was YES. [2021-03-25 13:25:21,250 INFO L84 FinitePrefix]: Finished finitePrefix Result has 932 conditions, 425 events. 49/425 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2709 event pairs, 49 based on Foata normal form. 146/564 useless extension candidates. Maximal degree in co-relation 906. Up to 82 conditions per place. [2021-03-25 13:25:21,251 INFO L132 encePairwiseOnDemand]: 128/138 looper letters, 1 selfloop transitions, 10 changer transitions 0/36 dead transitions. [2021-03-25 13:25:21,251 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 36 transitions, 163 flow [2021-03-25 13:25:21,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 13:25:21,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 13:25:21,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2021-03-25 13:25:21,253 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6400966183574879 [2021-03-25 13:25:21,253 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 265 transitions. [2021-03-25 13:25:21,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 265 transitions. [2021-03-25 13:25:21,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 13:25:21,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 265 transitions. [2021-03-25 13:25:21,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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) [2021-03-25 13:25:21,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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) [2021-03-25 13:25:21,255 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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) [2021-03-25 13:25:21,255 INFO L185 Difference]: Start difference. First operand has 56 places, 51 transitions, 201 flow. Second operand 3 states and 265 transitions. [2021-03-25 13:25:21,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 36 transitions, 163 flow [2021-03-25 13:25:21,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 36 transitions, 119 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 13:25:21,257 INFO L241 Difference]: Finished difference. Result has 49 places, 36 transitions, 117 flow [2021-03-25 13:25:21,257 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=49, PETRI_TRANSITIONS=36} [2021-03-25 13:25:21,257 INFO L343 CegarLoopForPetriNet]: 57 programPoint places, -8 predicate places. [2021-03-25 13:25:21,257 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 13:25:21,257 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 36 transitions, 117 flow [2021-03-25 13:25:21,257 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 36 transitions, 117 flow [2021-03-25 13:25:21,258 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 36 transitions, 117 flow [2021-03-25 13:25:21,278 INFO L129 PetriNetUnfolder]: 49/425 cut-off events. [2021-03-25 13:25:21,278 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 13:25:21,279 INFO L84 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 425 events. 49/425 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2678 event pairs, 49 based on Foata normal form. 0/418 useless extension candidates. Maximal degree in co-relation 586. Up to 81 conditions per place. [2021-03-25 13:25:21,281 INFO L142 LiptonReduction]: Number of co-enabled transitions 300 [2021-03-25 13:25:21,981 INFO L154 LiptonReduction]: Checked pairs total: 83 [2021-03-25 13:25:21,981 INFO L156 LiptonReduction]: Total number of compositions: 15 [2021-03-25 13:25:21,981 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 724 [2021-03-25 13:25:21,981 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 21 transitions, 85 flow [2021-03-25 13:25:21,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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) [2021-03-25 13:25:21,982 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 13:25:21,982 INFO L263 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 13:25:21,982 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-25 13:25:21,982 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]=== [2021-03-25 13:25:21,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 13:25:21,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1227061223, now seen corresponding path program 1 times [2021-03-25 13:25:21,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 13:25:21,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618065395] [2021-03-25 13:25:21,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 13:25:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 13:25:22,003 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 13:25:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 13:25:22,008 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 13:25:22,016 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 13:25:22,017 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 13:25:22,017 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-25 13:25:22,017 WARN L342 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-25 13:25:22,017 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2021-03-25 13:25:22,032 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,032 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,032 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,032 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,032 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,032 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,032 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,032 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,033 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,033 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,033 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,033 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,033 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,033 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,033 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,033 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,033 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,033 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,033 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,033 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,033 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,034 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,034 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,034 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,034 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,034 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,034 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,034 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,034 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,034 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,034 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,034 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,034 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,034 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,034 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,034 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,034 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,035 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,035 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,035 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,035 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,035 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,035 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,035 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,035 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,035 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,035 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,035 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,035 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,035 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,035 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,035 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,036 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,036 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,036 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,036 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,036 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,036 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,036 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,036 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,036 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,036 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,036 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,036 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,036 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,036 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,036 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,036 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,037 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,037 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,037 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,037 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,037 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,037 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,037 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,037 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,037 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,037 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,037 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,037 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,038 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,038 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,038 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,038 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,038 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,038 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,038 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,038 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,038 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,038 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,038 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,038 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,038 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,039 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,039 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,039 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,039 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,039 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,039 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,039 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,039 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,039 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,040 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,040 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,040 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,040 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,040 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,040 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,040 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,040 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,040 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,040 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,040 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,040 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,040 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,040 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,040 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,041 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,041 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,042 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,043 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,043 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,043 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,043 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,043 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,043 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,044 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,044 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,044 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,044 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,045 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,045 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,046 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,046 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,046 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,046 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,046 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,046 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,047 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,047 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,047 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,047 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,047 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,047 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,048 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,048 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,048 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,048 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,048 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,048 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,049 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,049 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,049 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,049 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,049 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,049 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:25:22,050 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 13:25:22,050 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-03-25 13:25:22,053 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 13:25:22,053 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 13:25:22,053 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 13:25:22,053 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 13:25:22,053 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 13:25:22,053 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 13:25:22,053 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 13:25:22,053 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 13:25:22,054 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 106 places, 100 transitions, 260 flow [2021-03-25 13:25:22,063 INFO L129 PetriNetUnfolder]: 13/153 cut-off events. [2021-03-25 13:25:22,063 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2021-03-25 13:25:22,064 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 153 events. 13/153 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 426 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 151. Up to 14 conditions per place. [2021-03-25 13:25:22,064 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 100 transitions, 260 flow [2021-03-25 13:25:22,065 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 100 transitions, 260 flow [2021-03-25 13:25:22,065 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 13:25:22,065 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 100 transitions, 260 flow [2021-03-25 13:25:22,065 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 100 transitions, 260 flow [2021-03-25 13:25:22,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 106 places, 100 transitions, 260 flow [2021-03-25 13:25:22,073 INFO L129 PetriNetUnfolder]: 13/153 cut-off events. [2021-03-25 13:25:22,073 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2021-03-25 13:25:22,074 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 153 events. 13/153 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 421 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 151. Up to 14 conditions per place. [2021-03-25 13:25:22,076 INFO L142 LiptonReduction]: Number of co-enabled transitions 6120 [2021-03-25 13:25:23,711 INFO L154 LiptonReduction]: Checked pairs total: 13723 [2021-03-25 13:25:23,711 INFO L156 LiptonReduction]: Total number of compositions: 59 [2021-03-25 13:25:23,712 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1647 [2021-03-25 13:25:23,713 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-03-25 13:25:23,713 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 13:25:23,713 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 13:25:23,713 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 13:25:23,714 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]=== [2021-03-25 13:25:23,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 13:25:23,714 INFO L82 PathProgramCache]: Analyzing trace with hash -238260055, now seen corresponding path program 1 times [2021-03-25 13:25:23,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 13:25:23,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424423533] [2021-03-25 13:25:23,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 13:25:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 13:25:23,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:25:23,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 13:25:23,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:25:23,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 13:25:23,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 13:25:23,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424423533] [2021-03-25 13:25:23,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 13:25:23,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 13:25:23,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863419201] [2021-03-25 13:25:23,745 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 13:25:23,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 13:25:23,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 13:25:23,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 13:25:23,745 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 159 [2021-03-25 13:25:23,746 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 59 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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) [2021-03-25 13:25:23,746 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 13:25:23,746 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 159 [2021-03-25 13:25:23,746 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 13:25:34,564 INFO L129 PetriNetUnfolder]: 83483/119972 cut-off events. [2021-03-25 13:25:34,564 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2021-03-25 13:25:35,157 INFO L84 FinitePrefix]: Finished finitePrefix Result has 229922 conditions, 119972 events. 83483/119972 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5379. Compared 950309 event pairs, 41526 based on Foata normal form. 26437/133381 useless extension candidates. Maximal degree in co-relation 229852. Up to 55117 conditions per place. [2021-03-25 13:25:35,984 INFO L132 encePairwiseOnDemand]: 134/159 looper letters, 30 selfloop transitions, 13 changer transitions 0/68 dead transitions. [2021-03-25 13:25:35,985 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 68 transitions, 282 flow [2021-03-25 13:25:35,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 13:25:35,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 13:25:35,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 325 transitions. [2021-03-25 13:25:35,986 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6813417190775681 [2021-03-25 13:25:35,986 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 325 transitions. [2021-03-25 13:25:35,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 325 transitions. [2021-03-25 13:25:35,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 13:25:35,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 325 transitions. [2021-03-25 13:25:35,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 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) [2021-03-25 13:25:35,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 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) [2021-03-25 13:25:35,989 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 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) [2021-03-25 13:25:35,989 INFO L185 Difference]: Start difference. First operand has 67 places, 59 transitions, 178 flow. Second operand 3 states and 325 transitions. [2021-03-25 13:25:35,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 68 transitions, 282 flow [2021-03-25 13:25:35,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 68 transitions, 252 flow, removed 15 selfloop flow, removed 0 redundant places. [2021-03-25 13:25:35,992 INFO L241 Difference]: Finished difference. Result has 67 places, 62 transitions, 242 flow [2021-03-25 13:25:35,992 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2021-03-25 13:25:35,993 INFO L343 CegarLoopForPetriNet]: 67 programPoint places, 0 predicate places. [2021-03-25 13:25:35,993 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 13:25:35,993 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 62 transitions, 242 flow [2021-03-25 13:25:35,993 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 62 transitions, 242 flow [2021-03-25 13:25:35,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 62 transitions, 242 flow [2021-03-25 13:25:38,047 INFO L129 PetriNetUnfolder]: 18160/31665 cut-off events. [2021-03-25 13:25:38,047 INFO L130 PetriNetUnfolder]: For 5090/15872 co-relation queries the response was YES. [2021-03-25 13:25:38,132 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67424 conditions, 31665 events. 18160/31665 cut-off events. For 5090/15872 co-relation queries the response was YES. Maximal size of possible extension queue 1758. Compared 292236 event pairs, 8669 based on Foata normal form. 0/31339 useless extension candidates. Maximal degree in co-relation 67397. Up to 14065 conditions per place. [2021-03-25 13:25:38,373 INFO L142 LiptonReduction]: Number of co-enabled transitions 1788 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown