/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/safe004_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:37:15,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:37:15,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:37:15,102 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:37:15,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:37:15,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:37:15,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:37:15,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:37:15,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:37:15,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:37:15,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:37:15,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:37:15,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:37:15,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:37:15,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:37:15,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:37:15,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:37:15,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:37:15,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:37:15,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:37:15,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:37:15,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:37:15,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:37:15,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:37:15,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 01:37:15,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:37:15,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:37:15,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:37:15,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:37:15,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:37:15,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:37:15,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:37:15,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:37:15,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:37:15,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:37:15,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:37:15,180 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 01:37:15,211 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:37:15,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:37:15,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:37:15,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:37:15,213 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:37:15,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:37:15,214 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:37:15,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:37:15,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:37:15,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:37:15,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:37:15,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:37:15,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:37:15,215 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:37:15,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:37:15,216 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:37:15,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:37:15,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:37:15,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:37:15,216 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:37:15,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:37:15,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:37:15,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:37:15,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:37:15,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:37:15,218 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:37:15,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:37:15,218 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:37:15,218 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:37:15,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:37:15,506 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:37:15,510 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:37:15,512 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:37:15,512 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:37:15,513 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i [2020-10-16 01:37:15,588 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6618d5bfb/9c80ad587f0d40879c3e9051a11d5152/FLAG91910f40a [2020-10-16 01:37:16,132 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:37:16,133 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i [2020-10-16 01:37:16,153 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6618d5bfb/9c80ad587f0d40879c3e9051a11d5152/FLAG91910f40a [2020-10-16 01:37:16,418 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6618d5bfb/9c80ad587f0d40879c3e9051a11d5152 [2020-10-16 01:37:16,427 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:37:16,429 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:37:16,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:37:16,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:37:16,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:37:16,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:37:16" (1/1) ... [2020-10-16 01:37:16,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27ab893b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:16, skipping insertion in model container [2020-10-16 01:37:16,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:37:16" (1/1) ... [2020-10-16 01:37:16,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:37:16,489 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:37:17,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:37:17,029 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:37:17,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:37:17,165 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:37:17,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:17 WrapperNode [2020-10-16 01:37:17,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:37:17,168 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:37:17,168 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:37:17,169 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:37:17,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:17" (1/1) ... [2020-10-16 01:37:17,195 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:17" (1/1) ... [2020-10-16 01:37:17,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:37:17,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:37:17,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:37:17,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:37:17,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:17" (1/1) ... [2020-10-16 01:37:17,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:17" (1/1) ... [2020-10-16 01:37:17,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:17" (1/1) ... [2020-10-16 01:37:17,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:17" (1/1) ... [2020-10-16 01:37:17,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:17" (1/1) ... [2020-10-16 01:37:17,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:17" (1/1) ... [2020-10-16 01:37:17,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:17" (1/1) ... [2020-10-16 01:37:17,246 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:37:17,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:37:17,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:37:17,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:37:17,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:17" (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 01:37:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:37:17,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:37:17,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:37:17,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:37:17,308 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:37:17,308 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:37:17,308 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:37:17,309 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:37:17,309 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 01:37:17,309 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 01:37:17,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:37:17,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:37:17,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:37:17,311 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 01:37:17,657 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:37:17,657 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:37:17,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:37:17 BoogieIcfgContainer [2020-10-16 01:37:17,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:37:17,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:37:17,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:37:17,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:37:17,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:37:16" (1/3) ... [2020-10-16 01:37:17,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@525f1b53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:37:17, skipping insertion in model container [2020-10-16 01:37:17,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:17" (2/3) ... [2020-10-16 01:37:17,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@525f1b53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:37:17, skipping insertion in model container [2020-10-16 01:37:17,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:37:17" (3/3) ... [2020-10-16 01:37:17,669 INFO L111 eAbstractionObserver]: Analyzing ICFG safe004_tso.oepc.i [2020-10-16 01:37:17,682 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:37:17,689 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:37:17,690 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:37:17,719 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:17,719 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:17,719 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:17,720 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:17,721 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:17,721 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:17,721 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:17,722 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:17,722 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:17,722 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:17,722 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:17,723 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:17,723 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:17,723 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:17,724 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:17,724 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:17,724 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:17,725 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:17,728 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:17,729 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:17,729 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:17,729 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:17,735 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:17,735 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:17,736 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:17,736 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:17,753 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:17,753 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:17,754 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:17,754 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:17,776 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 01:37:17,794 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:37:17,795 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:37:17,795 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:37:17,795 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:37:17,795 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:37:17,795 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:37:17,796 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:37:17,796 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:37:17,810 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 01:37:17,856 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-16 01:37:17,856 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:37:17,861 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 01:37:17,862 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 01:37:17,868 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 55 transitions, 119 flow [2020-10-16 01:37:17,871 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:37:17,873 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 55 transitions, 119 flow [2020-10-16 01:37:17,876 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 55 transitions, 119 flow [2020-10-16 01:37:17,877 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions, 119 flow [2020-10-16 01:37:17,896 INFO L129 PetriNetUnfolder]: 1/55 cut-off events. [2020-10-16 01:37:17,896 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:37:17,897 INFO L80 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 55 events. 1/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2020-10-16 01:37:17,899 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 01:37:19,213 INFO L132 LiptonReduction]: Checked pairs total: 1587 [2020-10-16 01:37:19,213 INFO L134 LiptonReduction]: Total number of compositions: 40 [2020-10-16 01:37:19,216 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1348 [2020-10-16 01:37:19,225 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2020-10-16 01:37:19,225 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:37:19,225 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:19,226 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:19,227 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:19,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:19,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1628105853, now seen corresponding path program 1 times [2020-10-16 01:37:19,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:19,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692498090] [2020-10-16 01:37:19,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:19,477 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 01:37:19,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692498090] [2020-10-16 01:37:19,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:19,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:37:19,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928239718] [2020-10-16 01:37:19,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:37:19,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:19,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:37:19,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:37:19,520 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 109 [2020-10-16 01:37:19,525 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states. [2020-10-16 01:37:19,525 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:19,525 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 109 [2020-10-16 01:37:19,527 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:19,548 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 01:37:19,548 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:37:19,548 INFO L80 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 01:37:19,550 INFO L132 encePairwiseOnDemand]: 106/109 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2020-10-16 01:37:19,550 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 49 flow [2020-10-16 01:37:19,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:37:19,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:37:19,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2020-10-16 01:37:19,566 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8654434250764526 [2020-10-16 01:37:19,567 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2020-10-16 01:37:19,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2020-10-16 01:37:19,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:19,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2020-10-16 01:37:19,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:37:19,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:37:19,582 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:37:19,584 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 283 transitions. [2020-10-16 01:37:19,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 49 flow [2020-10-16 01:37:19,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 17 transitions, 46 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 01:37:19,591 INFO L241 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2020-10-16 01:37:19,594 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2020-10-16 01:37:19,595 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 01:37:19,595 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2020-10-16 01:37:19,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:37:19,595 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:19,595 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:19,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:37:19,596 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:19,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:19,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1241645988, now seen corresponding path program 1 times [2020-10-16 01:37:19,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:19,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748707683] [2020-10-16 01:37:19,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:19,720 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 01:37:19,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748707683] [2020-10-16 01:37:19,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:19,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:37:19,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180521672] [2020-10-16 01:37:19,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:37:19,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:19,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:37:19,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:37:19,732 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 109 [2020-10-16 01:37:19,733 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states. [2020-10-16 01:37:19,733 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:19,734 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 109 [2020-10-16 01:37:19,734 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:19,796 INFO L129 PetriNetUnfolder]: 10/48 cut-off events. [2020-10-16 01:37:19,797 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 01:37:19,797 INFO L80 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 48 events. 10/48 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 143 event pairs, 1 based on Foata normal form. 4/51 useless extension candidates. Maximal degree in co-relation 88. Up to 15 conditions per place. [2020-10-16 01:37:19,798 INFO L132 encePairwiseOnDemand]: 104/109 looper letters, 7 selfloop transitions, 4 changer transitions 1/23 dead transitions. [2020-10-16 01:37:19,798 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 87 flow [2020-10-16 01:37:19,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:37:19,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:37:19,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 350 transitions. [2020-10-16 01:37:19,803 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8027522935779816 [2020-10-16 01:37:19,803 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 350 transitions. [2020-10-16 01:37:19,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 350 transitions. [2020-10-16 01:37:19,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:19,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 350 transitions. [2020-10-16 01:37:19,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:37:19,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:37:19,808 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:37:19,808 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states and 350 transitions. [2020-10-16 01:37:19,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 87 flow [2020-10-16 01:37:19,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 81 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:37:19,810 INFO L241 Difference]: Finished difference. Result has 30 places, 19 transitions, 70 flow [2020-10-16 01:37:19,810 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=30, PETRI_TRANSITIONS=19} [2020-10-16 01:37:19,811 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2020-10-16 01:37:19,811 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 19 transitions, 70 flow [2020-10-16 01:37:19,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:37:19,811 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:19,812 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:19,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:37:19,812 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:19,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:19,812 INFO L82 PathProgramCache]: Analyzing trace with hash 159985724, now seen corresponding path program 1 times [2020-10-16 01:37:19,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:19,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149893889] [2020-10-16 01:37:19,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:19,864 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 01:37:19,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149893889] [2020-10-16 01:37:19,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:19,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:37:19,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837470738] [2020-10-16 01:37:19,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:37:19,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:19,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:37:19,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:37:19,868 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 109 [2020-10-16 01:37:19,868 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 19 transitions, 70 flow. Second operand 4 states. [2020-10-16 01:37:19,869 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:19,869 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 109 [2020-10-16 01:37:19,869 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:19,905 INFO L129 PetriNetUnfolder]: 6/46 cut-off events. [2020-10-16 01:37:19,905 INFO L130 PetriNetUnfolder]: For 27/29 co-relation queries the response was YES. [2020-10-16 01:37:19,906 INFO L80 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 46 events. 6/46 cut-off events. For 27/29 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 139 event pairs, 1 based on Foata normal form. 5/50 useless extension candidates. Maximal degree in co-relation 107. Up to 15 conditions per place. [2020-10-16 01:37:19,906 INFO L132 encePairwiseOnDemand]: 105/109 looper letters, 7 selfloop transitions, 4 changer transitions 2/24 dead transitions. [2020-10-16 01:37:19,907 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 24 transitions, 120 flow [2020-10-16 01:37:19,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:37:19,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:37:19,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 434 transitions. [2020-10-16 01:37:19,910 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7963302752293578 [2020-10-16 01:37:19,910 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 434 transitions. [2020-10-16 01:37:19,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 434 transitions. [2020-10-16 01:37:19,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:19,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 434 transitions. [2020-10-16 01:37:19,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:37:19,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:37:19,915 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:37:19,915 INFO L185 Difference]: Start difference. First operand has 30 places, 19 transitions, 70 flow. Second operand 5 states and 434 transitions. [2020-10-16 01:37:19,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 24 transitions, 120 flow [2020-10-16 01:37:19,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 24 transitions, 109 flow, removed 2 selfloop flow, removed 2 redundant places. [2020-10-16 01:37:19,933 INFO L241 Difference]: Finished difference. Result has 36 places, 21 transitions, 99 flow [2020-10-16 01:37:19,934 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=99, PETRI_PLACES=36, PETRI_TRANSITIONS=21} [2020-10-16 01:37:19,934 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2020-10-16 01:37:19,934 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 21 transitions, 99 flow [2020-10-16 01:37:19,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:37:19,934 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:19,935 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:19,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:37:19,935 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:19,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:19,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1377495595, now seen corresponding path program 1 times [2020-10-16 01:37:19,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:19,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841469997] [2020-10-16 01:37:19,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:19,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:19,987 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 01:37:19,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841469997] [2020-10-16 01:37:19,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:19,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:37:19,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800994965] [2020-10-16 01:37:19,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:37:19,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:19,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:37:19,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:37:19,991 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 109 [2020-10-16 01:37:19,992 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 21 transitions, 99 flow. Second operand 4 states. [2020-10-16 01:37:19,992 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:19,992 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 109 [2020-10-16 01:37:19,992 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:20,027 INFO L129 PetriNetUnfolder]: 4/53 cut-off events. [2020-10-16 01:37:20,027 INFO L130 PetriNetUnfolder]: For 72/74 co-relation queries the response was YES. [2020-10-16 01:37:20,028 INFO L80 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 53 events. 4/53 cut-off events. For 72/74 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 182 event pairs, 0 based on Foata normal form. 5/57 useless extension candidates. Maximal degree in co-relation 139. Up to 17 conditions per place. [2020-10-16 01:37:20,028 INFO L132 encePairwiseOnDemand]: 104/109 looper letters, 7 selfloop transitions, 4 changer transitions 3/25 dead transitions. [2020-10-16 01:37:20,029 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 25 transitions, 151 flow [2020-10-16 01:37:20,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:37:20,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:37:20,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 349 transitions. [2020-10-16 01:37:20,031 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8004587155963303 [2020-10-16 01:37:20,031 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 349 transitions. [2020-10-16 01:37:20,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 349 transitions. [2020-10-16 01:37:20,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:20,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 349 transitions. [2020-10-16 01:37:20,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:37:20,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:37:20,034 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:37:20,034 INFO L185 Difference]: Start difference. First operand has 36 places, 21 transitions, 99 flow. Second operand 4 states and 349 transitions. [2020-10-16 01:37:20,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 25 transitions, 151 flow [2020-10-16 01:37:20,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 25 transitions, 127 flow, removed 6 selfloop flow, removed 4 redundant places. [2020-10-16 01:37:20,037 INFO L241 Difference]: Finished difference. Result has 34 places, 21 transitions, 96 flow [2020-10-16 01:37:20,037 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=34, PETRI_TRANSITIONS=21} [2020-10-16 01:37:20,037 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2020-10-16 01:37:20,037 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 21 transitions, 96 flow [2020-10-16 01:37:20,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:37:20,038 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:20,038 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:20,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:37:20,038 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:20,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:20,039 INFO L82 PathProgramCache]: Analyzing trace with hash -2068679953, now seen corresponding path program 2 times [2020-10-16 01:37:20,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:20,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481481821] [2020-10-16 01:37:20,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:20,096 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 01:37:20,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481481821] [2020-10-16 01:37:20,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:20,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:37:20,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371711236] [2020-10-16 01:37:20,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:37:20,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:20,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:37:20,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:37:20,100 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 109 [2020-10-16 01:37:20,100 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 21 transitions, 96 flow. Second operand 4 states. [2020-10-16 01:37:20,101 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:20,101 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 109 [2020-10-16 01:37:20,101 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:20,151 INFO L129 PetriNetUnfolder]: 63/141 cut-off events. [2020-10-16 01:37:20,152 INFO L130 PetriNetUnfolder]: For 296/340 co-relation queries the response was YES. [2020-10-16 01:37:20,153 INFO L80 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 141 events. 63/141 cut-off events. For 296/340 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 611 event pairs, 21 based on Foata normal form. 24/155 useless extension candidates. Maximal degree in co-relation 346. Up to 92 conditions per place. [2020-10-16 01:37:20,154 INFO L132 encePairwiseOnDemand]: 103/109 looper letters, 6 selfloop transitions, 4 changer transitions 7/31 dead transitions. [2020-10-16 01:37:20,154 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 31 transitions, 150 flow [2020-10-16 01:37:20,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:37:20,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:37:20,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 418 transitions. [2020-10-16 01:37:20,156 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7669724770642202 [2020-10-16 01:37:20,157 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 418 transitions. [2020-10-16 01:37:20,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 418 transitions. [2020-10-16 01:37:20,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:20,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 418 transitions. [2020-10-16 01:37:20,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:37:20,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:37:20,160 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:37:20,160 INFO L185 Difference]: Start difference. First operand has 34 places, 21 transitions, 96 flow. Second operand 5 states and 418 transitions. [2020-10-16 01:37:20,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 31 transitions, 150 flow [2020-10-16 01:37:20,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 31 transitions, 135 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 01:37:20,162 INFO L241 Difference]: Finished difference. Result has 37 places, 24 transitions, 121 flow [2020-10-16 01:37:20,163 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=37, PETRI_TRANSITIONS=24} [2020-10-16 01:37:20,163 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2020-10-16 01:37:20,163 INFO L481 AbstractCegarLoop]: Abstraction has has 37 places, 24 transitions, 121 flow [2020-10-16 01:37:20,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:37:20,163 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:20,164 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:20,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:37:20,164 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:20,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:20,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1023830700, now seen corresponding path program 1 times [2020-10-16 01:37:20,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:20,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110755008] [2020-10-16 01:37:20,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:20,222 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 01:37:20,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110755008] [2020-10-16 01:37:20,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:20,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:37:20,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391095208] [2020-10-16 01:37:20,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:37:20,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:20,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:37:20,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:37:20,225 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 109 [2020-10-16 01:37:20,226 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 24 transitions, 121 flow. Second operand 5 states. [2020-10-16 01:37:20,226 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:20,226 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 109 [2020-10-16 01:37:20,226 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:20,287 INFO L129 PetriNetUnfolder]: 36/101 cut-off events. [2020-10-16 01:37:20,288 INFO L130 PetriNetUnfolder]: For 361/445 co-relation queries the response was YES. [2020-10-16 01:37:20,288 INFO L80 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 101 events. 36/101 cut-off events. For 361/445 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 399 event pairs, 3 based on Foata normal form. 38/135 useless extension candidates. Maximal degree in co-relation 368. Up to 73 conditions per place. [2020-10-16 01:37:20,289 INFO L132 encePairwiseOnDemand]: 103/109 looper letters, 6 selfloop transitions, 7 changer transitions 7/34 dead transitions. [2020-10-16 01:37:20,290 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 34 transitions, 219 flow [2020-10-16 01:37:20,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 01:37:20,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 01:37:20,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 501 transitions. [2020-10-16 01:37:20,292 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7660550458715596 [2020-10-16 01:37:20,292 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 501 transitions. [2020-10-16 01:37:20,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 501 transitions. [2020-10-16 01:37:20,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:20,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 501 transitions. [2020-10-16 01:37:20,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 01:37:20,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 01:37:20,296 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 01:37:20,296 INFO L185 Difference]: Start difference. First operand has 37 places, 24 transitions, 121 flow. Second operand 6 states and 501 transitions. [2020-10-16 01:37:20,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 34 transitions, 219 flow [2020-10-16 01:37:20,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 34 transitions, 211 flow, removed 2 selfloop flow, removed 2 redundant places. [2020-10-16 01:37:20,300 INFO L241 Difference]: Finished difference. Result has 41 places, 27 transitions, 173 flow [2020-10-16 01:37:20,300 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=173, PETRI_PLACES=41, PETRI_TRANSITIONS=27} [2020-10-16 01:37:20,301 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2020-10-16 01:37:20,301 INFO L481 AbstractCegarLoop]: Abstraction has has 41 places, 27 transitions, 173 flow [2020-10-16 01:37:20,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:37:20,301 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:20,301 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:20,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:37:20,302 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:20,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:20,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1652386045, now seen corresponding path program 1 times [2020-10-16 01:37:20,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:20,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642933494] [2020-10-16 01:37:20,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:20,357 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 01:37:20,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642933494] [2020-10-16 01:37:20,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:20,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 01:37:20,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497557975] [2020-10-16 01:37:20,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 01:37:20,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:20,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 01:37:20,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 01:37:20,361 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 109 [2020-10-16 01:37:20,361 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 27 transitions, 173 flow. Second operand 6 states. [2020-10-16 01:37:20,361 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:20,361 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 109 [2020-10-16 01:37:20,362 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:20,428 INFO L129 PetriNetUnfolder]: 16/63 cut-off events. [2020-10-16 01:37:20,428 INFO L130 PetriNetUnfolder]: For 294/358 co-relation queries the response was YES. [2020-10-16 01:37:20,429 INFO L80 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 63 events. 16/63 cut-off events. For 294/358 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 199 event pairs, 0 based on Foata normal form. 33/93 useless extension candidates. Maximal degree in co-relation 270. Up to 43 conditions per place. [2020-10-16 01:37:20,429 INFO L132 encePairwiseOnDemand]: 103/109 looper letters, 3 selfloop transitions, 10 changer transitions 4/30 dead transitions. [2020-10-16 01:37:20,430 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 30 transitions, 239 flow [2020-10-16 01:37:20,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:37:20,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:37:20,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 578 transitions. [2020-10-16 01:37:20,432 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7575360419397117 [2020-10-16 01:37:20,433 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 578 transitions. [2020-10-16 01:37:20,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 578 transitions. [2020-10-16 01:37:20,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:20,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 578 transitions. [2020-10-16 01:37:20,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:37:20,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:37:20,437 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:37:20,437 INFO L185 Difference]: Start difference. First operand has 41 places, 27 transitions, 173 flow. Second operand 7 states and 578 transitions. [2020-10-16 01:37:20,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 30 transitions, 239 flow [2020-10-16 01:37:20,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 30 transitions, 199 flow, removed 16 selfloop flow, removed 4 redundant places. [2020-10-16 01:37:20,441 INFO L241 Difference]: Finished difference. Result has 44 places, 26 transitions, 171 flow [2020-10-16 01:37:20,441 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=171, PETRI_PLACES=44, PETRI_TRANSITIONS=26} [2020-10-16 01:37:20,441 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2020-10-16 01:37:20,441 INFO L481 AbstractCegarLoop]: Abstraction has has 44 places, 26 transitions, 171 flow [2020-10-16 01:37:20,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 01:37:20,441 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:20,442 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:20,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:37:20,442 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:20,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:20,442 INFO L82 PathProgramCache]: Analyzing trace with hash -522675833, now seen corresponding path program 1 times [2020-10-16 01:37:20,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:20,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110374543] [2020-10-16 01:37:20,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:20,477 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 01:37:20,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110374543] [2020-10-16 01:37:20,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:20,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:37:20,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726337829] [2020-10-16 01:37:20,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:37:20,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:20,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:37:20,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:37:20,480 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 109 [2020-10-16 01:37:20,481 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 26 transitions, 171 flow. Second operand 3 states. [2020-10-16 01:37:20,481 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:20,481 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 109 [2020-10-16 01:37:20,482 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:20,505 INFO L129 PetriNetUnfolder]: 16/66 cut-off events. [2020-10-16 01:37:20,506 INFO L130 PetriNetUnfolder]: For 173/186 co-relation queries the response was YES. [2020-10-16 01:37:20,506 INFO L80 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 66 events. 16/66 cut-off events. For 173/186 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 216 event pairs, 0 based on Foata normal form. 3/64 useless extension candidates. Maximal degree in co-relation 222. Up to 33 conditions per place. [2020-10-16 01:37:20,507 INFO L132 encePairwiseOnDemand]: 106/109 looper letters, 2 selfloop transitions, 2 changer transitions 3/26 dead transitions. [2020-10-16 01:37:20,507 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 26 transitions, 171 flow [2020-10-16 01:37:20,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:37:20,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:37:20,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2020-10-16 01:37:20,509 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8532110091743119 [2020-10-16 01:37:20,509 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2020-10-16 01:37:20,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2020-10-16 01:37:20,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:20,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2020-10-16 01:37:20,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:37:20,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:37:20,512 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:37:20,512 INFO L185 Difference]: Start difference. First operand has 44 places, 26 transitions, 171 flow. Second operand 3 states and 279 transitions. [2020-10-16 01:37:20,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 26 transitions, 171 flow [2020-10-16 01:37:20,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 26 transitions, 127 flow, removed 14 selfloop flow, removed 7 redundant places. [2020-10-16 01:37:20,516 INFO L241 Difference]: Finished difference. Result has 38 places, 23 transitions, 112 flow [2020-10-16 01:37:20,516 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=38, PETRI_TRANSITIONS=23} [2020-10-16 01:37:20,516 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2020-10-16 01:37:20,516 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 23 transitions, 112 flow [2020-10-16 01:37:20,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:37:20,517 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:20,517 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:20,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 01:37:20,517 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:20,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:20,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1197670021, now seen corresponding path program 2 times [2020-10-16 01:37:20,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:20,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475824284] [2020-10-16 01:37:20,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:20,593 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 01:37:20,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475824284] [2020-10-16 01:37:20,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:20,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:37:20,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098257015] [2020-10-16 01:37:20,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:37:20,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:20,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:37:20,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:37:20,596 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 109 [2020-10-16 01:37:20,597 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 23 transitions, 112 flow. Second operand 3 states. [2020-10-16 01:37:20,597 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:20,597 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 109 [2020-10-16 01:37:20,597 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:20,608 INFO L129 PetriNetUnfolder]: 7/30 cut-off events. [2020-10-16 01:37:20,608 INFO L130 PetriNetUnfolder]: For 28/30 co-relation queries the response was YES. [2020-10-16 01:37:20,609 INFO L80 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 30 events. 7/30 cut-off events. For 28/30 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 2/31 useless extension candidates. Maximal degree in co-relation 77. Up to 10 conditions per place. [2020-10-16 01:37:20,609 INFO L132 encePairwiseOnDemand]: 107/109 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2020-10-16 01:37:20,609 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 23 transitions, 121 flow [2020-10-16 01:37:20,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:37:20,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:37:20,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2020-10-16 01:37:20,611 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8287461773700305 [2020-10-16 01:37:20,611 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 271 transitions. [2020-10-16 01:37:20,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 271 transitions. [2020-10-16 01:37:20,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:20,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 271 transitions. [2020-10-16 01:37:20,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:37:20,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:37:20,614 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:37:20,614 INFO L185 Difference]: Start difference. First operand has 38 places, 23 transitions, 112 flow. Second operand 3 states and 271 transitions. [2020-10-16 01:37:20,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 23 transitions, 121 flow [2020-10-16 01:37:20,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 23 transitions, 111 flow, removed 0 selfloop flow, removed 5 redundant places. [2020-10-16 01:37:20,615 INFO L241 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2020-10-16 01:37:20,615 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2020-10-16 01:37:20,616 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2020-10-16 01:37:20,616 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2020-10-16 01:37:20,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:37:20,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 01:37:20,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:37:20 BasicIcfg [2020-10-16 01:37:20,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:37:20,632 INFO L168 Benchmark]: Toolchain (without parser) took 4196.74 ms. Allocated memory was 249.6 MB in the beginning and 371.2 MB in the end (delta: 121.6 MB). Free memory was 204.7 MB in the beginning and 227.9 MB in the end (delta: -23.2 MB). Peak memory consumption was 98.4 MB. Max. memory is 14.2 GB. [2020-10-16 01:37:20,634 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 249.6 MB. Free memory is still 225.9 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:37:20,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 736.28 ms. Allocated memory was 249.6 MB in the beginning and 310.4 MB in the end (delta: 60.8 MB). Free memory was 204.7 MB in the beginning and 263.8 MB in the end (delta: -59.2 MB). Peak memory consumption was 26.6 MB. Max. memory is 14.2 GB. [2020-10-16 01:37:20,636 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.19 ms. Allocated memory is still 310.4 MB. Free memory was 263.8 MB in the beginning and 261.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:37:20,637 INFO L168 Benchmark]: Boogie Preprocessor took 26.64 ms. Allocated memory is still 310.4 MB. Free memory was 261.3 MB in the beginning and 258.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:37:20,638 INFO L168 Benchmark]: RCFGBuilder took 413.67 ms. Allocated memory is still 310.4 MB. Free memory was 258.8 MB in the beginning and 237.0 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 01:37:20,642 INFO L168 Benchmark]: TraceAbstraction took 2961.93 ms. Allocated memory was 310.4 MB in the beginning and 371.2 MB in the end (delta: 60.8 MB). Free memory was 237.0 MB in the beginning and 227.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 69.9 MB. Max. memory is 14.2 GB. [2020-10-16 01:37:20,655 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 249.6 MB. Free memory is still 225.9 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 736.28 ms. Allocated memory was 249.6 MB in the beginning and 310.4 MB in the end (delta: 60.8 MB). Free memory was 204.7 MB in the beginning and 263.8 MB in the end (delta: -59.2 MB). Peak memory consumption was 26.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 51.19 ms. Allocated memory is still 310.4 MB. Free memory was 263.8 MB in the beginning and 261.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.64 ms. Allocated memory is still 310.4 MB. Free memory was 261.3 MB in the beginning and 258.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 413.67 ms. Allocated memory is still 310.4 MB. Free memory was 258.8 MB in the beginning and 237.0 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2961.93 ms. Allocated memory was 310.4 MB in the beginning and 371.2 MB in the end (delta: 60.8 MB). Free memory was 237.0 MB in the beginning and 227.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 69.9 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 550 VarBasedMoverChecksPositive, 46 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 80 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 64 PlacesBefore, 27 PlacesAfterwards, 55 TransitionsBefore, 17 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 40 TotalNumberOfCompositions, 1587 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 4 procedures, 68 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: 2.8s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 40 SDtfs, 16 SDslu, 18 SDs, 0 SdLazy, 123 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=173occurred in iteration=6, 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, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 3657 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...