/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:37:39,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:37:39,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:37:39,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:37:39,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:37:39,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:37:39,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:37:39,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:37:39,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:37:39,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:37:39,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:37:39,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:37:39,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:37:39,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:37:39,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:37:39,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:37:39,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:37:39,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:37:39,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:37:39,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:37:39,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:37:39,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:37:39,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:37:39,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:37:39,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 01:37:39,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:37:39,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:37:39,137 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:37:39,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:37:39,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:37:39,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:37:39,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:37:39,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:37:39,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:37:39,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:37:39,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:37:39,142 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 [2020-10-16 01:37:39,173 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:37:39,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:37:39,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:37:39,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:37:39,177 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:37:39,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:37:39,177 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:37:39,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:37:39,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:37:39,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:37:39,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:37:39,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:37:39,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:37:39,178 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:37:39,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:37:39,179 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:37:39,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:37:39,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:37:39,179 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:37:39,180 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:37:39,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:37:39,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:37:39,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:37:39,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:37:39,182 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:37:39,182 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:37:39,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:37:39,183 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:37:39,183 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:37:39,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:37:39,480 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:37:39,484 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:37:39,485 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:37:39,486 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:37:39,486 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.opt.i [2020-10-16 01:37:39,547 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ec43a490/507be051ef9548d7a84ffb3d35de080a/FLAGe96af29f2 [2020-10-16 01:37:40,139 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:37:40,140 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_pso.opt.i [2020-10-16 01:37:40,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ec43a490/507be051ef9548d7a84ffb3d35de080a/FLAGe96af29f2 [2020-10-16 01:37:40,400 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ec43a490/507be051ef9548d7a84ffb3d35de080a [2020-10-16 01:37:40,411 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:37:40,413 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:37:40,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:37:40,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:37:40,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:37:40,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:37:40" (1/1) ... [2020-10-16 01:37:40,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d3dc4dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:40, skipping insertion in model container [2020-10-16 01:37:40,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:37:40" (1/1) ... [2020-10-16 01:37:40,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:37:40,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:37:41,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:37:41,034 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:37:41,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:37:41,176 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:37:41,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:41 WrapperNode [2020-10-16 01:37:41,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:37:41,178 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:37:41,178 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:37:41,178 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:37:41,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:41" (1/1) ... [2020-10-16 01:37:41,203 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:41" (1/1) ... [2020-10-16 01:37:41,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:37:41,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:37:41,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:37:41,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:37:41,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:41" (1/1) ... [2020-10-16 01:37:41,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:41" (1/1) ... [2020-10-16 01:37:41,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:41" (1/1) ... [2020-10-16 01:37:41,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:41" (1/1) ... [2020-10-16 01:37:41,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:41" (1/1) ... [2020-10-16 01:37:41,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:41" (1/1) ... [2020-10-16 01:37:41,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:41" (1/1) ... [2020-10-16 01:37:41,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:37:41,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:37:41,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:37:41,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:37:41,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:41" (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 [2020-10-16 01:37:41,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:37:41,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:37:41,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:37:41,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:37:41,314 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:37:41,315 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:37:41,315 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:37:41,315 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:37:41,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:37:41,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:37:41,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:37:41,317 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 01:37:41,638 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:37:41,638 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:37:41,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:37:41 BoogieIcfgContainer [2020-10-16 01:37:41,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:37:41,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:37:41,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:37:41,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:37:41,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:37:40" (1/3) ... [2020-10-16 01:37:41,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@528c395a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:37:41, skipping insertion in model container [2020-10-16 01:37:41,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:41" (2/3) ... [2020-10-16 01:37:41,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@528c395a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:37:41, skipping insertion in model container [2020-10-16 01:37:41,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:37:41" (3/3) ... [2020-10-16 01:37:41,648 INFO L111 eAbstractionObserver]: Analyzing ICFG safe006_pso.opt.i [2020-10-16 01:37:41,657 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:37:41,662 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:37:41,663 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:37:41,685 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:41,685 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:41,686 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:41,686 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:41,687 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:41,687 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:41,687 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:41,688 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:41,688 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:41,688 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:41,688 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:41,689 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:41,692 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:41,692 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:41,692 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:41,692 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:41,697 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:41,697 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:41,697 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:41,697 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:41,714 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-16 01:37:41,731 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:37:41,731 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:37:41,731 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:37:41,731 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:37:41,731 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:37:41,731 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:37:41,732 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:37:41,732 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:37:41,743 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-10-16 01:37:41,784 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-10-16 01:37:41,784 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:37:41,788 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-10-16 01:37:41,789 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 56 transitions, 122 flow [2020-10-16 01:37:41,795 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 45 transitions, 96 flow [2020-10-16 01:37:41,797 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:37:41,800 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 45 transitions, 96 flow [2020-10-16 01:37:41,802 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 45 transitions, 96 flow [2020-10-16 01:37:41,802 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 51 places, 45 transitions, 96 flow [2020-10-16 01:37:41,818 INFO L129 PetriNetUnfolder]: 1/45 cut-off events. [2020-10-16 01:37:41,818 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:37:41,819 INFO L80 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2020-10-16 01:37:41,821 INFO L117 LiptonReduction]: Number of co-enabled transitions 456 [2020-10-16 01:37:42,951 INFO L132 LiptonReduction]: Checked pairs total: 878 [2020-10-16 01:37:42,952 INFO L134 LiptonReduction]: Total number of compositions: 37 [2020-10-16 01:37:42,955 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1160 [2020-10-16 01:37:42,962 INFO L129 PetriNetUnfolder]: 0/9 cut-off events. [2020-10-16 01:37:42,962 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:37:42,962 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:42,963 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 01:37:42,964 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:42,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:42,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1644539286, now seen corresponding path program 1 times [2020-10-16 01:37:42,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:42,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548541236] [2020-10-16 01:37:42,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:43,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:37:43,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548541236] [2020-10-16 01:37:43,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:43,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:37:43,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530256723] [2020-10-16 01:37:43,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:37:43,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:43,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:37:43,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:37:43,223 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 93 [2020-10-16 01:37:43,224 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 12 transitions, 30 flow. Second operand 3 states. [2020-10-16 01:37:43,225 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:43,225 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 93 [2020-10-16 01:37:43,226 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:43,245 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2020-10-16 01:37:43,245 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:37:43,245 INFO L80 FinitePrefix]: Finished finitePrefix Result has 23 conditions, 12 events. 0/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 1/13 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 01:37:43,247 INFO L132 encePairwiseOnDemand]: 90/93 looper letters, 1 selfloop transitions, 2 changer transitions 0/12 dead transitions. [2020-10-16 01:37:43,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 12 transitions, 36 flow [2020-10-16 01:37:43,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:37:43,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:37:43,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 226 transitions. [2020-10-16 01:37:43,262 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8100358422939068 [2020-10-16 01:37:43,263 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 226 transitions. [2020-10-16 01:37:43,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 226 transitions. [2020-10-16 01:37:43,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:43,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 226 transitions. [2020-10-16 01:37:43,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:37:43,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:37:43,277 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:37:43,279 INFO L185 Difference]: Start difference. First operand has 19 places, 12 transitions, 30 flow. Second operand 3 states and 226 transitions. [2020-10-16 01:37:43,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 12 transitions, 36 flow [2020-10-16 01:37:43,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 12 transitions, 34 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:37:43,285 INFO L241 Difference]: Finished difference. Result has 20 places, 12 transitions, 36 flow [2020-10-16 01:37:43,288 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=12} [2020-10-16 01:37:43,289 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 1 predicate places. [2020-10-16 01:37:43,289 INFO L481 AbstractCegarLoop]: Abstraction has has 20 places, 12 transitions, 36 flow [2020-10-16 01:37:43,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:37:43,290 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:43,290 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:43,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:37:43,291 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:43,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:43,291 INFO L82 PathProgramCache]: Analyzing trace with hash -558890197, now seen corresponding path program 1 times [2020-10-16 01:37:43,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:43,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665626512] [2020-10-16 01:37:43,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:43,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:37:43,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665626512] [2020-10-16 01:37:43,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:43,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:37:43,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129291399] [2020-10-16 01:37:43,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:37:43,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:43,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:37:43,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:37:43,362 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 93 [2020-10-16 01:37:43,363 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 12 transitions, 36 flow. Second operand 4 states. [2020-10-16 01:37:43,363 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:43,363 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 93 [2020-10-16 01:37:43,363 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:43,395 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 01:37:43,395 INFO L130 PetriNetUnfolder]: For 4/5 co-relation queries the response was YES. [2020-10-16 01:37:43,396 INFO L80 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 17 events. 0/17 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 22 event pairs, 0 based on Foata normal form. 2/18 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2020-10-16 01:37:43,396 INFO L132 encePairwiseOnDemand]: 89/93 looper letters, 1 selfloop transitions, 3 changer transitions 1/13 dead transitions. [2020-10-16 01:37:43,396 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 13 transitions, 51 flow [2020-10-16 01:37:43,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:37:43,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:37:43,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 279 transitions. [2020-10-16 01:37:43,400 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.75 [2020-10-16 01:37:43,400 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 279 transitions. [2020-10-16 01:37:43,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 279 transitions. [2020-10-16 01:37:43,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:43,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 279 transitions. [2020-10-16 01:37:43,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:37:43,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:37:43,405 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:37:43,405 INFO L185 Difference]: Start difference. First operand has 20 places, 12 transitions, 36 flow. Second operand 4 states and 279 transitions. [2020-10-16 01:37:43,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 13 transitions, 51 flow [2020-10-16 01:37:43,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 13 transitions, 45 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:37:43,406 INFO L241 Difference]: Finished difference. Result has 23 places, 12 transitions, 46 flow [2020-10-16 01:37:43,407 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=46, PETRI_PLACES=23, PETRI_TRANSITIONS=12} [2020-10-16 01:37:43,407 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 4 predicate places. [2020-10-16 01:37:43,407 INFO L481 AbstractCegarLoop]: Abstraction has has 23 places, 12 transitions, 46 flow [2020-10-16 01:37:43,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:37:43,408 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:43,408 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:43,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:37:43,408 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:43,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:43,409 INFO L82 PathProgramCache]: Analyzing trace with hash -222693223, now seen corresponding path program 1 times [2020-10-16 01:37:43,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:43,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316867010] [2020-10-16 01:37:43,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:43,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:37:43,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316867010] [2020-10-16 01:37:43,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:43,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:37:43,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898757595] [2020-10-16 01:37:43,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:37:43,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:43,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:37:43,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:37:43,462 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 93 [2020-10-16 01:37:43,462 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 12 transitions, 46 flow. Second operand 4 states. [2020-10-16 01:37:43,463 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:43,463 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 93 [2020-10-16 01:37:43,463 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:43,479 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2020-10-16 01:37:43,479 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2020-10-16 01:37:43,479 INFO L80 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 0/11 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 2/13 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2020-10-16 01:37:43,479 INFO L132 encePairwiseOnDemand]: 90/93 looper letters, 0 selfloop transitions, 0 changer transitions 11/11 dead transitions. [2020-10-16 01:37:43,480 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 11 transitions, 44 flow [2020-10-16 01:37:43,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:37:43,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:37:43,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 281 transitions. [2020-10-16 01:37:43,482 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7553763440860215 [2020-10-16 01:37:43,482 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 281 transitions. [2020-10-16 01:37:43,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 281 transitions. [2020-10-16 01:37:43,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:43,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 281 transitions. [2020-10-16 01:37:43,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:37:43,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:37:43,486 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:37:43,486 INFO L185 Difference]: Start difference. First operand has 23 places, 12 transitions, 46 flow. Second operand 4 states and 281 transitions. [2020-10-16 01:37:43,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 11 transitions, 44 flow [2020-10-16 01:37:43,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 11 transitions, 32 flow, removed 0 selfloop flow, removed 6 redundant places. [2020-10-16 01:37:43,487 INFO L241 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2020-10-16 01:37:43,488 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2020-10-16 01:37:43,488 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 0 predicate places. [2020-10-16 01:37:43,488 INFO L481 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2020-10-16 01:37:43,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:37:43,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:37:43,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:37:43 BasicIcfg [2020-10-16 01:37:43,493 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:37:43,496 INFO L168 Benchmark]: Toolchain (without parser) took 3082.92 ms. Allocated memory was 251.7 MB in the beginning and 358.1 MB in the end (delta: 106.4 MB). Free memory was 207.4 MB in the beginning and 202.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 111.1 MB. Max. memory is 14.2 GB. [2020-10-16 01:37:43,497 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 251.7 MB. Free memory is still 228.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:37:43,498 INFO L168 Benchmark]: CACSL2BoogieTranslator took 763.76 ms. Allocated memory was 251.7 MB in the beginning and 315.1 MB in the end (delta: 63.4 MB). Free memory was 207.4 MB in the beginning and 265.7 MB in the end (delta: -58.3 MB). Peak memory consumption was 26.7 MB. Max. memory is 14.2 GB. [2020-10-16 01:37:43,498 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.43 ms. Allocated memory is still 315.1 MB. Free memory was 265.7 MB in the beginning and 263.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:37:43,500 INFO L168 Benchmark]: Boogie Preprocessor took 26.18 ms. Allocated memory is still 315.1 MB. Free memory is still 263.2 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:37:43,501 INFO L168 Benchmark]: RCFGBuilder took 388.98 ms. Allocated memory is still 315.1 MB. Free memory was 263.2 MB in the beginning and 241.1 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 14.2 GB. [2020-10-16 01:37:43,504 INFO L168 Benchmark]: TraceAbstraction took 1852.38 ms. Allocated memory was 315.1 MB in the beginning and 358.1 MB in the end (delta: 43.0 MB). Free memory was 241.1 MB in the beginning and 202.7 MB in the end (delta: 38.3 MB). Peak memory consumption was 81.3 MB. Max. memory is 14.2 GB. [2020-10-16 01:37:43,511 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 251.7 MB. Free memory is still 228.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 763.76 ms. Allocated memory was 251.7 MB in the beginning and 315.1 MB in the end (delta: 63.4 MB). Free memory was 207.4 MB in the beginning and 265.7 MB in the end (delta: -58.3 MB). Peak memory consumption was 26.7 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 46.43 ms. Allocated memory is still 315.1 MB. Free memory was 265.7 MB in the beginning and 263.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.18 ms. Allocated memory is still 315.1 MB. Free memory is still 263.2 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 388.98 ms. Allocated memory is still 315.1 MB. Free memory was 263.2 MB in the beginning and 241.1 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 14.2 GB. * TraceAbstraction took 1852.38 ms. Allocated memory was 315.1 MB in the beginning and 358.1 MB in the end (delta: 43.0 MB). Free memory was 241.1 MB in the beginning and 202.7 MB in the end (delta: 38.3 MB). Peak memory consumption was 81.3 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 323 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 24 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 36 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.1s, 51 PlacesBefore, 19 PlacesAfterwards, 45 TransitionsBefore, 12 TransitionsAfterwards, 456 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 37 TotalNumberOfCompositions, 878 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 8 SDtfs, 2 SDslu, 1 SDs, 0 SdLazy, 9 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 375 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...