/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe028_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 21:29:50,128 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 21:29:50,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 21:29:50,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 21:29:50,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 21:29:50,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 21:29:50,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 21:29:50,167 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 21:29:50,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 21:29:50,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 21:29:50,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 21:29:50,173 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 21:29:50,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 21:29:50,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 21:29:50,175 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 21:29:50,178 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 21:29:50,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 21:29:50,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 21:29:50,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 21:29:50,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 21:29:50,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 21:29:50,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 21:29:50,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 21:29:50,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 21:29:50,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-10 21:29:50,197 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 21:29:50,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 21:29:50,199 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 21:29:50,199 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 21:29:50,200 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 21:29:50,200 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 21:29:50,200 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 21:29:50,200 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 21:29:50,200 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 21:29:50,201 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 21:29:50,201 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 21:29:50,203 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-SemanticLbe.epf [2021-06-10 21:29:50,217 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 21:29:50,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 21:29:50,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 21:29:50,218 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 21:29:50,218 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 21:29:50,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 21:29:50,218 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 21:29:50,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 21:29:50,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 21:29:50,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 21:29:50,219 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 21:29:50,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 21:29:50,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 21:29:50,219 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 21:29:50,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 21:29:50,219 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 21:29:50,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 21:29:50,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 21:29:50,219 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 21:29:50,219 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 21:29:50,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 21:29:50,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 21:29:50,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 21:29:50,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 21:29:50,220 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 21:29:50,220 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 21:29:50,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 21:29:50,220 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 21:29:50,220 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 21:29:50,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 21:29:50,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 21:29:50,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 21:29:50,455 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 21:29:50,457 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 21:29:50,458 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe028_pso.oepc.i [2021-06-10 21:29:50,501 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02c0a3732/6b8adfa5dc734fa8844aaad7156b8a00/FLAGf5b22ced4 [2021-06-10 21:29:50,895 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 21:29:50,896 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_pso.oepc.i [2021-06-10 21:29:50,905 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02c0a3732/6b8adfa5dc734fa8844aaad7156b8a00/FLAGf5b22ced4 [2021-06-10 21:29:50,914 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02c0a3732/6b8adfa5dc734fa8844aaad7156b8a00 [2021-06-10 21:29:50,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 21:29:50,917 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 21:29:50,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 21:29:50,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 21:29:50,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 21:29:50,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 09:29:50" (1/1) ... [2021-06-10 21:29:50,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15f8bd0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:29:50, skipping insertion in model container [2021-06-10 21:29:50,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 09:29:50" (1/1) ... [2021-06-10 21:29:50,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 21:29:50,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 21:29:51,051 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-wmm/safe028_pso.oepc.i[950,963] [2021-06-10 21:29:51,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 21:29:51,143 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 21:29:51,158 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-wmm/safe028_pso.oepc.i[950,963] [2021-06-10 21:29:51,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 21:29:51,248 INFO L208 MainTranslator]: Completed translation [2021-06-10 21:29:51,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:29:51 WrapperNode [2021-06-10 21:29:51,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 21:29:51,252 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 21:29:51,252 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 21:29:51,253 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 21:29:51,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:29:51" (1/1) ... [2021-06-10 21:29:51,268 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:29:51" (1/1) ... [2021-06-10 21:29:51,281 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 21:29:51,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 21:29:51,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 21:29:51,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 21:29:51,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:29:51" (1/1) ... [2021-06-10 21:29:51,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:29:51" (1/1) ... [2021-06-10 21:29:51,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:29:51" (1/1) ... [2021-06-10 21:29:51,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:29:51" (1/1) ... [2021-06-10 21:29:51,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:29:51" (1/1) ... [2021-06-10 21:29:51,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:29:51" (1/1) ... [2021-06-10 21:29:51,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:29:51" (1/1) ... [2021-06-10 21:29:51,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 21:29:51,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 21:29:51,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 21:29:51,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 21:29:51,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:29:51" (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 [2021-06-10 21:29:51,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 21:29:51,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 21:29:51,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 21:29:51,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 21:29:51,352 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-10 21:29:51,352 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-10 21:29:51,352 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-10 21:29:51,352 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-10 21:29:51,352 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-10 21:29:51,352 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-10 21:29:51,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 21:29:51,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 21:29:51,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 21:29:51,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 21:29:51,353 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 21:29:51,546 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 21:29:51,546 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-10 21:29:51,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 09:29:51 BoogieIcfgContainer [2021-06-10 21:29:51,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 21:29:51,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 21:29:51,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 21:29:51,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 21:29:51,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 09:29:50" (1/3) ... [2021-06-10 21:29:51,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0831f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 09:29:51, skipping insertion in model container [2021-06-10 21:29:51,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:29:51" (2/3) ... [2021-06-10 21:29:51,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0831f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 09:29:51, skipping insertion in model container [2021-06-10 21:29:51,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 09:29:51" (3/3) ... [2021-06-10 21:29:51,552 INFO L111 eAbstractionObserver]: Analyzing ICFG safe028_pso.oepc.i [2021-06-10 21:29:51,555 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 21:29:51,558 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 21:29:51,558 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 21:29:51,580 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,580 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,580 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,580 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,580 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,580 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,580 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,581 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,581 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,581 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,581 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,581 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,582 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,582 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,582 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,582 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,582 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,582 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,582 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,582 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,583 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,583 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,583 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,583 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,584 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,584 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,584 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,584 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,584 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,584 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,584 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,584 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,585 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,585 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,585 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,585 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,587 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,587 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,587 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,587 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,590 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,590 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,590 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,590 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,592 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,592 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,592 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,592 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:29:51,593 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 21:29:51,606 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-10 21:29:51,619 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 21:29:51,619 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 21:29:51,619 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 21:29:51,619 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 21:29:51,619 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 21:29:51,619 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 21:29:51,619 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 21:29:51,619 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 21:29:51,626 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-06-10 21:29:51,650 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-06-10 21:29:51,650 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:29:51,653 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-06-10 21:29:51,653 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 74 transitions, 163 flow [2021-06-10 21:29:51,655 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2021-06-10 21:29:51,656 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-10 21:29:51,664 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 59 transitions, 127 flow [2021-06-10 21:29:51,667 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 59 transitions, 127 flow [2021-06-10 21:29:51,668 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 59 transitions, 127 flow [2021-06-10 21:29:51,678 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-06-10 21:29:51,678 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:29:51,679 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 42 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2021-06-10 21:29:51,680 INFO L151 LiptonReduction]: Number of co-enabled transitions 804 [2021-06-10 21:29:51,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:51,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:29:51,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:51,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:29:51,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:51,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:29:51,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:51,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:29:51,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:51,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:29:51,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:51,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:29:51,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:51,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:29:51,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:29:51,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:51,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:29:51,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:51,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:29:51,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:51,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:29:52,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:52,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:29:52,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:52,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:29:52,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:52,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:29:52,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:29:52,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:52,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:29:52,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:52,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:29:52,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:52,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:29:52,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:52,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:29:52,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:29:52,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:52,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:29:52,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:52,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:29:52,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:29:52,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:52,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:29:52,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:52,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:29:52,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:52,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 21:29:52,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:29:52,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:52,390 INFO L147 QuantifierPusher]: treesize reduction 22, result has 4.3 percent of original size 1 [2021-06-10 21:29:52,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:52,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:29:52,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:52,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:29:52,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:52,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:29:52,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:29:52,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:52,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:29:52,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:52,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:29:52,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:52,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:29:52,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:52,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:29:52,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:52,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:29:52,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:52,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:29:52,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:52,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:29:52,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:52,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:29:52,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:52,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:29:53,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:53,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:29:53,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:53,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:29:53,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 21:29:53,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:53,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:29:53,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:53,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:29:53,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:53,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:29:53,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:29:53,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:53,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:29:53,422 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-06-10 21:29:53,582 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-06-10 21:29:53,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:53,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:29:53,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:53,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:29:53,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:29:53,655 INFO L163 LiptonReduction]: Checked pairs total: 1334 [2021-06-10 21:29:53,656 INFO L165 LiptonReduction]: Total number of compositions: 46 [2021-06-10 21:29:53,657 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2001 [2021-06-10 21:29:53,662 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-06-10 21:29:53,663 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:29:53,663 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:29:53,663 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:29:53,663 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:29:53,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:29:53,666 INFO L82 PathProgramCache]: Analyzing trace with hash 2025940466, now seen corresponding path program 1 times [2021-06-10 21:29:53,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:29:53,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418360296] [2021-06-10 21:29:53,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:29:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:29:53,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:53,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:29:53,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:29:53,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418360296] [2021-06-10 21:29:53,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:29:53,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:29:53,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62129440] [2021-06-10 21:29:53,760 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-10 21:29:53,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:29:53,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-10 21:29:53,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-10 21:29:53,768 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 120 [2021-06-10 21:29:53,776 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 43 flow. Second operand has 2 states, 2 states have (on average 113.5) internal successors, (227), 2 states have internal predecessors, (227), 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) [2021-06-10 21:29:53,777 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:29:53,777 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 120 [2021-06-10 21:29:53,777 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:29:53,783 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-06-10 21:29:53,783 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:29:53,783 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 16 events. 0/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 1/17 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-06-10 21:29:53,784 INFO L132 encePairwiseOnDemand]: 119/120 looper letters, 0 selfloop transitions, 0 changer transitions 0/16 dead transitions. [2021-06-10 21:29:53,784 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 16 transitions, 41 flow [2021-06-10 21:29:53,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-10 21:29:53,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-06-10 21:29:53,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 227 transitions. [2021-06-10 21:29:53,792 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9458333333333333 [2021-06-10 21:29:53,792 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 227 transitions. [2021-06-10 21:29:53,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 227 transitions. [2021-06-10 21:29:53,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:29:53,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 227 transitions. [2021-06-10 21:29:53,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 113.5) internal successors, (227), 2 states have internal predecessors, (227), 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) [2021-06-10 21:29:53,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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) [2021-06-10 21:29:53,804 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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) [2021-06-10 21:29:53,805 INFO L185 Difference]: Start difference. First operand has 26 places, 17 transitions, 43 flow. Second operand 2 states and 227 transitions. [2021-06-10 21:29:53,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 16 transitions, 41 flow [2021-06-10 21:29:53,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 16 transitions, 38 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-10 21:29:53,808 INFO L241 Difference]: Finished difference. Result has 24 places, 16 transitions, 38 flow [2021-06-10 21:29:53,809 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=38, PETRI_PLACES=24, PETRI_TRANSITIONS=16} [2021-06-10 21:29:53,809 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, -2 predicate places. [2021-06-10 21:29:53,809 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 16 transitions, 38 flow [2021-06-10 21:29:53,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 113.5) internal successors, (227), 2 states have internal predecessors, (227), 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) [2021-06-10 21:29:53,810 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:29:53,810 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:29:53,810 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 21:29:53,810 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:29:53,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:29:53,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1620355304, now seen corresponding path program 1 times [2021-06-10 21:29:53,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:29:53,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471859790] [2021-06-10 21:29:53,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:29:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:29:53,888 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 21:29:53,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:29:53,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:29:53,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471859790] [2021-06-10 21:29:53,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:29:53,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:29:53,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597142263] [2021-06-10 21:29:53,903 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 21:29:53,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:29:53,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 21:29:53,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 21:29:53,910 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 120 [2021-06-10 21:29:53,911 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 16 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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) [2021-06-10 21:29:53,911 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:29:53,911 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 120 [2021-06-10 21:29:53,911 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:29:53,928 INFO L129 PetriNetUnfolder]: 7/32 cut-off events. [2021-06-10 21:29:53,928 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:29:53,928 INFO L84 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 32 events. 7/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 61 event pairs, 3 based on Foata normal form. 1/33 useless extension candidates. Maximal degree in co-relation 56. Up to 18 conditions per place. [2021-06-10 21:29:53,929 INFO L132 encePairwiseOnDemand]: 116/120 looper letters, 4 selfloop transitions, 3 changer transitions 0/18 dead transitions. [2021-06-10 21:29:53,929 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 18 transitions, 56 flow [2021-06-10 21:29:53,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 21:29:53,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 21:29:53,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2021-06-10 21:29:53,934 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8222222222222222 [2021-06-10 21:29:53,934 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2021-06-10 21:29:53,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2021-06-10 21:29:53,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:29:53,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2021-06-10 21:29:53,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:29:53,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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) [2021-06-10 21:29:53,937 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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) [2021-06-10 21:29:53,937 INFO L185 Difference]: Start difference. First operand has 24 places, 16 transitions, 38 flow. Second operand 3 states and 296 transitions. [2021-06-10 21:29:53,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 18 transitions, 56 flow [2021-06-10 21:29:53,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 18 transitions, 56 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-10 21:29:53,938 INFO L241 Difference]: Finished difference. Result has 27 places, 18 transitions, 57 flow [2021-06-10 21:29:53,938 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2021-06-10 21:29:53,939 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2021-06-10 21:29:53,939 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 57 flow [2021-06-10 21:29:53,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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) [2021-06-10 21:29:53,939 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:29:53,939 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:29:53,939 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 21:29:53,939 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:29:53,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:29:53,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1308592632, now seen corresponding path program 1 times [2021-06-10 21:29:53,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:29:53,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665368565] [2021-06-10 21:29:53,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:29:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:29:54,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:54,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:29:54,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:54,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:29:54,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:29:54,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665368565] [2021-06-10 21:29:54,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:29:54,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:29:54,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263396753] [2021-06-10 21:29:54,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:29:54,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:29:54,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:29:54,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:29:54,016 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 120 [2021-06-10 21:29:54,017 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 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) [2021-06-10 21:29:54,017 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:29:54,017 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 120 [2021-06-10 21:29:54,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:29:54,033 INFO L129 PetriNetUnfolder]: 5/37 cut-off events. [2021-06-10 21:29:54,033 INFO L130 PetriNetUnfolder]: For 12/22 co-relation queries the response was YES. [2021-06-10 21:29:54,034 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 37 events. 5/37 cut-off events. For 12/22 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 101 event pairs, 0 based on Foata normal form. 6/43 useless extension candidates. Maximal degree in co-relation 77. Up to 13 conditions per place. [2021-06-10 21:29:54,034 INFO L132 encePairwiseOnDemand]: 116/120 looper letters, 4 selfloop transitions, 4 changer transitions 4/23 dead transitions. [2021-06-10 21:29:54,034 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 103 flow [2021-06-10 21:29:54,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:29:54,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:29:54,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 390 transitions. [2021-06-10 21:29:54,035 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8125 [2021-06-10 21:29:54,035 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 390 transitions. [2021-06-10 21:29:54,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 390 transitions. [2021-06-10 21:29:54,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:29:54,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 390 transitions. [2021-06-10 21:29:54,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:29:54,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 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) [2021-06-10 21:29:54,037 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 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) [2021-06-10 21:29:54,037 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 57 flow. Second operand 4 states and 390 transitions. [2021-06-10 21:29:54,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 103 flow [2021-06-10 21:29:54,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 23 transitions, 98 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 21:29:54,038 INFO L241 Difference]: Finished difference. Result has 31 places, 18 transitions, 71 flow [2021-06-10 21:29:54,038 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=18} [2021-06-10 21:29:54,038 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2021-06-10 21:29:54,038 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 18 transitions, 71 flow [2021-06-10 21:29:54,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 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) [2021-06-10 21:29:54,039 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:29:54,039 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:29:54,039 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 21:29:54,039 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:29:54,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:29:54,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1910891145, now seen corresponding path program 1 times [2021-06-10 21:29:54,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:29:54,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019038466] [2021-06-10 21:29:54,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:29:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:29:54,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:54,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:29:54,074 INFO L142 QuantifierPusher]: treesize reduction 19, result has 32.1 percent of original size [2021-06-10 21:29:54,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 21:29:54,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:29:54,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019038466] [2021-06-10 21:29:54,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:29:54,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:29:54,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598751952] [2021-06-10 21:29:54,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:29:54,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:29:54,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:29:54,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:29:54,080 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 120 [2021-06-10 21:29:54,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 18 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 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) [2021-06-10 21:29:54,081 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:29:54,081 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 120 [2021-06-10 21:29:54,081 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:29:54,107 INFO L129 PetriNetUnfolder]: 38/89 cut-off events. [2021-06-10 21:29:54,108 INFO L130 PetriNetUnfolder]: For 118/142 co-relation queries the response was YES. [2021-06-10 21:29:54,108 INFO L84 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 89 events. 38/89 cut-off events. For 118/142 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 321 event pairs, 14 based on Foata normal form. 16/99 useless extension candidates. Maximal degree in co-relation 213. Up to 57 conditions per place. [2021-06-10 21:29:54,109 INFO L132 encePairwiseOnDemand]: 114/120 looper letters, 7 selfloop transitions, 7 changer transitions 2/28 dead transitions. [2021-06-10 21:29:54,109 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 28 transitions, 123 flow [2021-06-10 21:29:54,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 21:29:54,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 21:29:54,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 468 transitions. [2021-06-10 21:29:54,110 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.78 [2021-06-10 21:29:54,110 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 468 transitions. [2021-06-10 21:29:54,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 468 transitions. [2021-06-10 21:29:54,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:29:54,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 468 transitions. [2021-06-10 21:29:54,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.6) internal successors, (468), 5 states have internal predecessors, (468), 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) [2021-06-10 21:29:54,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 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) [2021-06-10 21:29:54,112 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 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) [2021-06-10 21:29:54,112 INFO L185 Difference]: Start difference. First operand has 31 places, 18 transitions, 71 flow. Second operand 5 states and 468 transitions. [2021-06-10 21:29:54,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 28 transitions, 123 flow [2021-06-10 21:29:54,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 21:29:54,114 INFO L241 Difference]: Finished difference. Result has 36 places, 24 transitions, 120 flow [2021-06-10 21:29:54,114 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=120, PETRI_PLACES=36, PETRI_TRANSITIONS=24} [2021-06-10 21:29:54,114 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2021-06-10 21:29:54,114 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 24 transitions, 120 flow [2021-06-10 21:29:54,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 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) [2021-06-10 21:29:54,114 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:29:54,114 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:29:54,114 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 21:29:54,115 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:29:54,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:29:54,115 INFO L82 PathProgramCache]: Analyzing trace with hash -860042948, now seen corresponding path program 1 times [2021-06-10 21:29:54,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:29:54,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641794943] [2021-06-10 21:29:54,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:29:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:29:54,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:54,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:29:54,141 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-06-10 21:29:54,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-06-10 21:29:54,173 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-06-10 21:29:54,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:29:54,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:29:54,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641794943] [2021-06-10 21:29:54,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:29:54,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 21:29:54,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710305937] [2021-06-10 21:29:54,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 21:29:54,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:29:54,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 21:29:54,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-10 21:29:54,180 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 120 [2021-06-10 21:29:54,181 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 24 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 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) [2021-06-10 21:29:54,181 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:29:54,181 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 120 [2021-06-10 21:29:54,181 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:29:54,223 INFO L129 PetriNetUnfolder]: 24/74 cut-off events. [2021-06-10 21:29:54,223 INFO L130 PetriNetUnfolder]: For 266/391 co-relation queries the response was YES. [2021-06-10 21:29:54,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 74 events. 24/74 cut-off events. For 266/391 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 268 event pairs, 2 based on Foata normal form. 37/106 useless extension candidates. Maximal degree in co-relation 275. Up to 52 conditions per place. [2021-06-10 21:29:54,224 INFO L132 encePairwiseOnDemand]: 114/120 looper letters, 5 selfloop transitions, 13 changer transitions 4/34 dead transitions. [2021-06-10 21:29:54,224 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 34 transitions, 222 flow [2021-06-10 21:29:54,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-10 21:29:54,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-10 21:29:54,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 654 transitions. [2021-06-10 21:29:54,226 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7785714285714286 [2021-06-10 21:29:54,226 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 654 transitions. [2021-06-10 21:29:54,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 654 transitions. [2021-06-10 21:29:54,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:29:54,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 654 transitions. [2021-06-10 21:29:54,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.42857142857143) internal successors, (654), 7 states have internal predecessors, (654), 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) [2021-06-10 21:29:54,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 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) [2021-06-10 21:29:54,229 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 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) [2021-06-10 21:29:54,229 INFO L185 Difference]: Start difference. First operand has 36 places, 24 transitions, 120 flow. Second operand 7 states and 654 transitions. [2021-06-10 21:29:54,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 34 transitions, 222 flow [2021-06-10 21:29:54,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 34 transitions, 218 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 21:29:54,231 INFO L241 Difference]: Finished difference. Result has 44 places, 30 transitions, 204 flow [2021-06-10 21:29:54,231 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=204, PETRI_PLACES=44, PETRI_TRANSITIONS=30} [2021-06-10 21:29:54,231 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 18 predicate places. [2021-06-10 21:29:54,231 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 30 transitions, 204 flow [2021-06-10 21:29:54,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 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) [2021-06-10 21:29:54,232 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:29:54,232 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:29:54,232 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 21:29:54,232 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:29:54,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:29:54,232 INFO L82 PathProgramCache]: Analyzing trace with hash -2013565361, now seen corresponding path program 1 times [2021-06-10 21:29:54,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:29:54,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390065079] [2021-06-10 21:29:54,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:29:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:29:54,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:54,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:29:54,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:54,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:29:54,260 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-06-10 21:29:54,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-06-10 21:29:54,264 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-06-10 21:29:54,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:29:54,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:29:54,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390065079] [2021-06-10 21:29:54,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:29:54,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 21:29:54,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331539076] [2021-06-10 21:29:54,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 21:29:54,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:29:54,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 21:29:54,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-06-10 21:29:54,271 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 120 [2021-06-10 21:29:54,271 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 30 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 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) [2021-06-10 21:29:54,272 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:29:54,272 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 120 [2021-06-10 21:29:54,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:29:54,318 INFO L129 PetriNetUnfolder]: 13/58 cut-off events. [2021-06-10 21:29:54,318 INFO L130 PetriNetUnfolder]: For 443/731 co-relation queries the response was YES. [2021-06-10 21:29:54,319 INFO L84 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 58 events. 13/58 cut-off events. For 443/731 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 190 event pairs, 0 based on Foata normal form. 49/102 useless extension candidates. Maximal degree in co-relation 269. Up to 41 conditions per place. [2021-06-10 21:29:54,319 INFO L132 encePairwiseOnDemand]: 114/120 looper letters, 2 selfloop transitions, 17 changer transitions 3/34 dead transitions. [2021-06-10 21:29:54,319 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 34 transitions, 280 flow [2021-06-10 21:29:54,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 21:29:54,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 21:29:54,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 834 transitions. [2021-06-10 21:29:54,322 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7722222222222223 [2021-06-10 21:29:54,322 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 834 transitions. [2021-06-10 21:29:54,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 834 transitions. [2021-06-10 21:29:54,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:29:54,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 834 transitions. [2021-06-10 21:29:54,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 92.66666666666667) internal successors, (834), 9 states have internal predecessors, (834), 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) [2021-06-10 21:29:54,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 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) [2021-06-10 21:29:54,325 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 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) [2021-06-10 21:29:54,325 INFO L185 Difference]: Start difference. First operand has 44 places, 30 transitions, 204 flow. Second operand 9 states and 834 transitions. [2021-06-10 21:29:54,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 34 transitions, 280 flow [2021-06-10 21:29:54,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 34 transitions, 250 flow, removed 11 selfloop flow, removed 2 redundant places. [2021-06-10 21:29:54,328 INFO L241 Difference]: Finished difference. Result has 53 places, 31 transitions, 230 flow [2021-06-10 21:29:54,328 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=230, PETRI_PLACES=53, PETRI_TRANSITIONS=31} [2021-06-10 21:29:54,328 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 27 predicate places. [2021-06-10 21:29:54,328 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 31 transitions, 230 flow [2021-06-10 21:29:54,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 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) [2021-06-10 21:29:54,328 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:29:54,328 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:29:54,328 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 21:29:54,328 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:29:54,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:29:54,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1208512428, now seen corresponding path program 1 times [2021-06-10 21:29:54,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:29:54,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749814101] [2021-06-10 21:29:54,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:29:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:29:54,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:54,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:29:54,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:54,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:29:54,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:54,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:29:54,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:29:54,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749814101] [2021-06-10 21:29:54,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:29:54,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 21:29:54,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493164105] [2021-06-10 21:29:54,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:29:54,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:29:54,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:29:54,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:29:54,353 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 120 [2021-06-10 21:29:54,354 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 31 transitions, 230 flow. Second operand 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) [2021-06-10 21:29:54,354 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:29:54,354 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 120 [2021-06-10 21:29:54,354 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:29:54,368 INFO L129 PetriNetUnfolder]: 18/80 cut-off events. [2021-06-10 21:29:54,369 INFO L130 PetriNetUnfolder]: For 643/691 co-relation queries the response was YES. [2021-06-10 21:29:54,369 INFO L84 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 80 events. 18/80 cut-off events. For 643/691 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 344 event pairs, 0 based on Foata normal form. 10/83 useless extension candidates. Maximal degree in co-relation 325. Up to 32 conditions per place. [2021-06-10 21:29:54,369 INFO L132 encePairwiseOnDemand]: 117/120 looper letters, 3 selfloop transitions, 1 changer transitions 10/32 dead transitions. [2021-06-10 21:29:54,369 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 32 transitions, 242 flow [2021-06-10 21:29:54,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:29:54,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:29:54,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 394 transitions. [2021-06-10 21:29:54,370 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8208333333333333 [2021-06-10 21:29:54,370 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 394 transitions. [2021-06-10 21:29:54,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 394 transitions. [2021-06-10 21:29:54,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:29:54,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 394 transitions. [2021-06-10 21:29:54,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 98.5) internal successors, (394), 4 states have internal predecessors, (394), 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) [2021-06-10 21:29:54,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 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) [2021-06-10 21:29:54,372 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 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) [2021-06-10 21:29:54,372 INFO L185 Difference]: Start difference. First operand has 53 places, 31 transitions, 230 flow. Second operand 4 states and 394 transitions. [2021-06-10 21:29:54,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 32 transitions, 242 flow [2021-06-10 21:29:54,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 32 transitions, 184 flow, removed 14 selfloop flow, removed 8 redundant places. [2021-06-10 21:29:54,374 INFO L241 Difference]: Finished difference. Result has 49 places, 22 transitions, 121 flow [2021-06-10 21:29:54,374 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=49, PETRI_TRANSITIONS=22} [2021-06-10 21:29:54,374 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2021-06-10 21:29:54,374 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 22 transitions, 121 flow [2021-06-10 21:29:54,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 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) [2021-06-10 21:29:54,375 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:29:54,375 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:29:54,375 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 21:29:54,375 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:29:54,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:29:54,375 INFO L82 PathProgramCache]: Analyzing trace with hash 519190370, now seen corresponding path program 2 times [2021-06-10 21:29:54,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:29:54,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596290702] [2021-06-10 21:29:54,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:29:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:29:54,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:54,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:29:54,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:54,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:29:54,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:29:54,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:29:54,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:29:54,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596290702] [2021-06-10 21:29:54,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:29:54,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 21:29:54,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566845890] [2021-06-10 21:29:54,398 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:29:54,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:29:54,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:29:54,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:29:54,399 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 120 [2021-06-10 21:29:54,399 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 22 transitions, 121 flow. Second operand has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 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) [2021-06-10 21:29:54,399 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:29:54,399 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 120 [2021-06-10 21:29:54,399 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:29:54,408 INFO L129 PetriNetUnfolder]: 6/29 cut-off events. [2021-06-10 21:29:54,408 INFO L130 PetriNetUnfolder]: For 60/62 co-relation queries the response was YES. [2021-06-10 21:29:54,409 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 29 events. 6/29 cut-off events. For 60/62 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 45 event pairs, 0 based on Foata normal form. 3/31 useless extension candidates. Maximal degree in co-relation 81. Up to 10 conditions per place. [2021-06-10 21:29:54,409 INFO L132 encePairwiseOnDemand]: 117/120 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2021-06-10 21:29:54,409 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 21 transitions, 111 flow [2021-06-10 21:29:54,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:29:54,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:29:54,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 385 transitions. [2021-06-10 21:29:54,410 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8020833333333334 [2021-06-10 21:29:54,410 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 385 transitions. [2021-06-10 21:29:54,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 385 transitions. [2021-06-10 21:29:54,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:29:54,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 385 transitions. [2021-06-10 21:29:54,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 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) [2021-06-10 21:29:54,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 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) [2021-06-10 21:29:54,412 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 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) [2021-06-10 21:29:54,412 INFO L185 Difference]: Start difference. First operand has 49 places, 22 transitions, 121 flow. Second operand 4 states and 385 transitions. [2021-06-10 21:29:54,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 21 transitions, 111 flow [2021-06-10 21:29:54,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 21 transitions, 104 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-06-10 21:29:54,412 INFO L241 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2021-06-10 21:29:54,412 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2021-06-10 21:29:54,413 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 15 predicate places. [2021-06-10 21:29:54,413 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2021-06-10 21:29:54,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 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) [2021-06-10 21:29:54,413 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-10 21:29:54,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 09:29:54 BasicIcfg [2021-06-10 21:29:54,415 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 21:29:54,416 INFO L168 Benchmark]: Toolchain (without parser) took 3499.16 ms. Allocated memory was 360.7 MB in the beginning and 434.1 MB in the end (delta: 73.4 MB). Free memory was 323.8 MB in the beginning and 340.2 MB in the end (delta: -16.4 MB). Peak memory consumption was 58.7 MB. Max. memory is 16.0 GB. [2021-06-10 21:29:54,416 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 360.7 MB. Free memory is still 341.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 21:29:54,416 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.38 ms. Allocated memory is still 360.7 MB. Free memory was 323.7 MB in the beginning and 324.7 MB in the end (delta: -1.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.0 GB. [2021-06-10 21:29:54,417 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.96 ms. Allocated memory is still 360.7 MB. Free memory was 324.7 MB in the beginning and 322.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:29:54,417 INFO L168 Benchmark]: Boogie Preprocessor took 12.82 ms. Allocated memory is still 360.7 MB. Free memory was 322.6 MB in the beginning and 321.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 21:29:54,417 INFO L168 Benchmark]: RCFGBuilder took 252.03 ms. Allocated memory is still 360.7 MB. Free memory was 320.5 MB in the beginning and 297.4 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:29:54,417 INFO L168 Benchmark]: TraceAbstraction took 2867.18 ms. Allocated memory was 360.7 MB in the beginning and 434.1 MB in the end (delta: 73.4 MB). Free memory was 297.4 MB in the beginning and 340.2 MB in the end (delta: -42.8 MB). Peak memory consumption was 31.7 MB. Max. memory is 16.0 GB. [2021-06-10 21:29:54,418 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 360.7 MB. Free memory is still 341.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 333.38 ms. Allocated memory is still 360.7 MB. Free memory was 323.7 MB in the beginning and 324.7 MB in the end (delta: -1.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 29.96 ms. Allocated memory is still 360.7 MB. Free memory was 324.7 MB in the beginning and 322.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.82 ms. Allocated memory is still 360.7 MB. Free memory was 322.6 MB in the beginning and 321.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 252.03 ms. Allocated memory is still 360.7 MB. Free memory was 320.5 MB in the beginning and 297.4 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2867.18 ms. Allocated memory was 360.7 MB in the beginning and 434.1 MB in the end (delta: 73.4 MB). Free memory was 297.4 MB in the beginning and 340.2 MB in the end (delta: -42.8 MB). Peak memory consumption was 31.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1988.7ms, 68 PlacesBefore, 26 PlacesAfterwards, 59 TransitionsBefore, 17 TransitionsAfterwards, 804 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 46 TotalNumberOfCompositions, 1334 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 776, positive: 709, positive conditional: 0, positive unconditional: 709, negative: 67, negative conditional: 0, negative unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 565, positive: 539, positive conditional: 0, positive unconditional: 539, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 565, positive: 539, positive conditional: 0, positive unconditional: 539, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 565, positive: 533, positive conditional: 0, positive unconditional: 533, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 32, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 79, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 66, negative conditional: 0, negative unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 776, positive: 170, positive conditional: 0, positive unconditional: 170, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 565, unknown conditional: 0, unknown unconditional: 565] , Statistics on independence cache: Total cache size (in pairs): 907, Positive cache size: 881, Positive conditional cache size: 0, Positive unconditional cache size: 881, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 1.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2797.2ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 276.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2041.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 23 SDtfs, 19 SDslu, 14 SDs, 0 SdLazy, 102 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 59.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 101.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=230occurred in iteration=6, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.1ms SsaConstructionTime, 76.8ms SatisfiabilityAnalysisTime, 271.8ms InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 292 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...