/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/safe001_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:36:05,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:36:05,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:36:05,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:36:05,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:36:05,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:36:05,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:36:05,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:36:05,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:36:05,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:36:05,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:36:05,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:36:05,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:36:05,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:36:05,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:36:05,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:36:05,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:36:05,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:36:05,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:36:05,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:36:05,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:36:05,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:36:05,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:36:05,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:36:05,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 01:36:05,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:36:05,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:36:05,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:36:05,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:36:05,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:36:05,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:36:05,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:36:05,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:36:05,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:36:05,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:36:05,182 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:36:05,183 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 01:36:05,204 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:36:05,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:36:05,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:36:05,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:36:05,206 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:36:05,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:36:05,206 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:36:05,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:36:05,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:36:05,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:36:05,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:36:05,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:36:05,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:36:05,208 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:36:05,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:36:05,208 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:36:05,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:36:05,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:36:05,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:36:05,209 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:36:05,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:36:05,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:36:05,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:36:05,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:36:05,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:36:05,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:36:05,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:36:05,210 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:36:05,211 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:36:05,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:36:05,540 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:36:05,544 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:36:05,545 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:36:05,546 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:36:05,546 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2020-10-16 01:36:05,605 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75589cfc6/d23f094cbed9429ba53486ba7f67b328/FLAG0b20abac5 [2020-10-16 01:36:06,168 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:36:06,169 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2020-10-16 01:36:06,185 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75589cfc6/d23f094cbed9429ba53486ba7f67b328/FLAG0b20abac5 [2020-10-16 01:36:06,426 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75589cfc6/d23f094cbed9429ba53486ba7f67b328 [2020-10-16 01:36:06,434 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:36:06,436 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:36:06,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:36:06,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:36:06,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:36:06,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:36:06" (1/1) ... [2020-10-16 01:36:06,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d1c832f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:06, skipping insertion in model container [2020-10-16 01:36:06,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:36:06" (1/1) ... [2020-10-16 01:36:06,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:36:06,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:36:06,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:36:06,989 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:36:07,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:36:07,112 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:36:07,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:07 WrapperNode [2020-10-16 01:36:07,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:36:07,114 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:36:07,114 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:36:07,115 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:36:07,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:07" (1/1) ... [2020-10-16 01:36:07,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:07" (1/1) ... [2020-10-16 01:36:07,165 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:36:07,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:36:07,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:36:07,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:36:07,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:07" (1/1) ... [2020-10-16 01:36:07,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:07" (1/1) ... [2020-10-16 01:36:07,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:07" (1/1) ... [2020-10-16 01:36:07,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:07" (1/1) ... [2020-10-16 01:36:07,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:07" (1/1) ... [2020-10-16 01:36:07,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:07" (1/1) ... [2020-10-16 01:36:07,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:07" (1/1) ... [2020-10-16 01:36:07,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:36:07,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:36:07,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:36:07,194 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:36:07,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:07" (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 01:36:07,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:36:07,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:36:07,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:36:07,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:36:07,259 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:36:07,259 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:36:07,260 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:36:07,260 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:36:07,260 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 01:36:07,260 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 01:36:07,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:36:07,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:36:07,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:36:07,262 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 01:36:07,696 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:36:07,697 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:36:07,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:36:07 BoogieIcfgContainer [2020-10-16 01:36:07,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:36:07,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:36:07,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:36:07,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:36:07,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:36:06" (1/3) ... [2020-10-16 01:36:07,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47022240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:36:07, skipping insertion in model container [2020-10-16 01:36:07,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:07" (2/3) ... [2020-10-16 01:36:07,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47022240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:36:07, skipping insertion in model container [2020-10-16 01:36:07,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:36:07" (3/3) ... [2020-10-16 01:36:07,708 INFO L111 eAbstractionObserver]: Analyzing ICFG safe001_tso.opt.i [2020-10-16 01:36:07,721 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:36:07,729 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:36:07,730 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:36:07,763 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:07,763 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:07,764 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:07,764 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:07,764 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:07,765 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:07,765 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:07,765 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:07,766 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:07,766 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:07,766 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:07,766 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:07,767 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:07,767 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:07,767 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:07,767 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:07,768 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:07,768 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:07,772 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:07,772 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:07,773 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:07,773 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:07,779 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:07,779 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:07,780 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:07,780 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:07,782 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:07,783 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:07,783 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:07,783 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:07,800 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 01:36:07,818 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:36:07,818 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:36:07,818 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:36:07,818 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:36:07,819 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:36:07,819 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:36:07,819 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:36:07,819 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:36:07,832 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 01:36:07,875 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-16 01:36:07,875 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:36:07,881 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 01:36:07,881 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 01:36:07,887 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 55 transitions, 119 flow [2020-10-16 01:36:07,890 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:36:07,892 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 55 transitions, 119 flow [2020-10-16 01:36:07,895 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 55 transitions, 119 flow [2020-10-16 01:36:07,896 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions, 119 flow [2020-10-16 01:36:07,914 INFO L129 PetriNetUnfolder]: 1/55 cut-off events. [2020-10-16 01:36:07,914 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:36:07,915 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 01:36:07,917 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 01:36:08,509 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-10-16 01:36:09,415 INFO L132 LiptonReduction]: Checked pairs total: 1587 [2020-10-16 01:36:09,416 INFO L134 LiptonReduction]: Total number of compositions: 40 [2020-10-16 01:36:09,419 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1532 [2020-10-16 01:36:09,437 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2020-10-16 01:36:09,437 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:36:09,438 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:36:09,438 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:36:09,439 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:36:09,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:36:09,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1628105853, now seen corresponding path program 1 times [2020-10-16 01:36:09,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:36:09,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464892527] [2020-10-16 01:36:09,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:36:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:36:09,742 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 01:36:09,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464892527] [2020-10-16 01:36:09,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:36:09,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:36:09,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938557999] [2020-10-16 01:36:09,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:36:09,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:36:09,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:36:09,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:36:09,773 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 109 [2020-10-16 01:36:09,775 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states. [2020-10-16 01:36:09,775 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:36:09,776 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 109 [2020-10-16 01:36:09,777 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:36:09,798 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 01:36:09,798 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:36:09,799 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 16 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 01:36:09,800 INFO L132 encePairwiseOnDemand]: 106/109 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2020-10-16 01:36:09,801 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 49 flow [2020-10-16 01:36:09,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:36:09,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:36:09,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2020-10-16 01:36:09,818 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8562691131498471 [2020-10-16 01:36:09,819 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2020-10-16 01:36:09,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2020-10-16 01:36:09,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:36:09,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2020-10-16 01:36:09,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:36:09,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:36:09,835 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:36:09,838 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 280 transitions. [2020-10-16 01:36:09,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 49 flow [2020-10-16 01:36:09,842 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 01:36:09,844 INFO L241 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2020-10-16 01:36:09,846 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 01:36:09,847 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 01:36:09,848 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2020-10-16 01:36:09,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:36:09,848 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:36:09,848 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:36:09,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:36:09,849 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:36:09,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:36:09,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1068325757, now seen corresponding path program 1 times [2020-10-16 01:36:09,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:36:09,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50354036] [2020-10-16 01:36:09,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:36:09,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:36:09,925 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 01:36:09,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50354036] [2020-10-16 01:36:09,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:36:09,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:36:09,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503929969] [2020-10-16 01:36:09,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:36:09,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:36:09,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:36:09,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:36:09,931 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 109 [2020-10-16 01:36:09,932 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states. [2020-10-16 01:36:09,932 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:36:09,932 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 109 [2020-10-16 01:36:09,932 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:36:09,988 INFO L129 PetriNetUnfolder]: 11/56 cut-off events. [2020-10-16 01:36:09,988 INFO L130 PetriNetUnfolder]: For 12/19 co-relation queries the response was YES. [2020-10-16 01:36:09,989 INFO L80 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 56 events. 11/56 cut-off events. For 12/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 203 event pairs, 1 based on Foata normal form. 6/60 useless extension candidates. Maximal degree in co-relation 104. Up to 15 conditions per place. [2020-10-16 01:36:09,990 INFO L132 encePairwiseOnDemand]: 104/109 looper letters, 8 selfloop transitions, 4 changer transitions 1/24 dead transitions. [2020-10-16 01:36:09,990 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 24 transitions, 91 flow [2020-10-16 01:36:09,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:36:09,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:36:09,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 351 transitions. [2020-10-16 01:36:09,995 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.805045871559633 [2020-10-16 01:36:09,995 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 351 transitions. [2020-10-16 01:36:09,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 351 transitions. [2020-10-16 01:36:09,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:36:09,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 351 transitions. [2020-10-16 01:36:09,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:36:10,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:36:10,000 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:36:10,000 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states and 351 transitions. [2020-10-16 01:36:10,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 24 transitions, 91 flow [2020-10-16 01:36:10,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 24 transitions, 85 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:36:10,003 INFO L241 Difference]: Finished difference. Result has 30 places, 19 transitions, 70 flow [2020-10-16 01:36:10,003 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 01:36:10,004 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2020-10-16 01:36:10,004 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 19 transitions, 70 flow [2020-10-16 01:36:10,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:36:10,004 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:36:10,004 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:36:10,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:36:10,005 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:36:10,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:36:10,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1965831898, now seen corresponding path program 1 times [2020-10-16 01:36:10,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:36:10,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656560776] [2020-10-16 01:36:10,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:36:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:36:10,089 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 01:36:10,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656560776] [2020-10-16 01:36:10,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:36:10,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:36:10,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118968453] [2020-10-16 01:36:10,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:36:10,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:36:10,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:36:10,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:36:10,096 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 109 [2020-10-16 01:36:10,099 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 19 transitions, 70 flow. Second operand 4 states. [2020-10-16 01:36:10,100 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:36:10,100 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 109 [2020-10-16 01:36:10,100 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:36:10,152 INFO L129 PetriNetUnfolder]: 2/43 cut-off events. [2020-10-16 01:36:10,153 INFO L130 PetriNetUnfolder]: For 29/33 co-relation queries the response was YES. [2020-10-16 01:36:10,153 INFO L80 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 43 events. 2/43 cut-off events. For 29/33 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 142 event pairs, 0 based on Foata normal form. 7/50 useless extension candidates. Maximal degree in co-relation 95. Up to 11 conditions per place. [2020-10-16 01:36:10,154 INFO L132 encePairwiseOnDemand]: 105/109 looper letters, 6 selfloop transitions, 3 changer transitions 3/23 dead transitions. [2020-10-16 01:36:10,154 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 23 transitions, 108 flow [2020-10-16 01:36:10,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:36:10,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:36:10,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 434 transitions. [2020-10-16 01:36:10,172 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7963302752293578 [2020-10-16 01:36:10,172 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 434 transitions. [2020-10-16 01:36:10,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 434 transitions. [2020-10-16 01:36:10,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:36:10,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 434 transitions. [2020-10-16 01:36:10,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:36:10,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:36:10,177 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:36:10,177 INFO L185 Difference]: Start difference. First operand has 30 places, 19 transitions, 70 flow. Second operand 5 states and 434 transitions. [2020-10-16 01:36:10,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 23 transitions, 108 flow [2020-10-16 01:36:10,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 23 transitions, 96 flow, removed 1 selfloop flow, removed 3 redundant places. [2020-10-16 01:36:10,179 INFO L241 Difference]: Finished difference. Result has 34 places, 19 transitions, 78 flow [2020-10-16 01:36:10,180 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=78, PETRI_PLACES=34, PETRI_TRANSITIONS=19} [2020-10-16 01:36:10,180 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2020-10-16 01:36:10,180 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 19 transitions, 78 flow [2020-10-16 01:36:10,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:36:10,180 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:36:10,181 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:36:10,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:36:10,181 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:36:10,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:36:10,181 INFO L82 PathProgramCache]: Analyzing trace with hash 154652174, now seen corresponding path program 1 times [2020-10-16 01:36:10,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:36:10,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800170521] [2020-10-16 01:36:10,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:36:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:36:10,228 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 01:36:10,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800170521] [2020-10-16 01:36:10,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:36:10,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:36:10,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320631648] [2020-10-16 01:36:10,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:36:10,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:36:10,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:36:10,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:36:10,231 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 109 [2020-10-16 01:36:10,232 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 19 transitions, 78 flow. Second operand 4 states. [2020-10-16 01:36:10,232 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:36:10,232 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 109 [2020-10-16 01:36:10,232 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:36:10,265 INFO L129 PetriNetUnfolder]: 0/34 cut-off events. [2020-10-16 01:36:10,265 INFO L130 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2020-10-16 01:36:10,266 INFO L80 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 34 events. 0/34 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 94 event pairs, 0 based on Foata normal form. 2/36 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2020-10-16 01:36:10,266 INFO L132 encePairwiseOnDemand]: 104/109 looper letters, 3 selfloop transitions, 3 changer transitions 5/22 dead transitions. [2020-10-16 01:36:10,266 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 22 transitions, 114 flow [2020-10-16 01:36:10,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:36:10,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:36:10,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 348 transitions. [2020-10-16 01:36:10,269 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7981651376146789 [2020-10-16 01:36:10,269 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 348 transitions. [2020-10-16 01:36:10,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 348 transitions. [2020-10-16 01:36:10,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:36:10,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 348 transitions. [2020-10-16 01:36:10,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:36:10,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:36:10,272 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:36:10,272 INFO L185 Difference]: Start difference. First operand has 34 places, 19 transitions, 78 flow. Second operand 4 states and 348 transitions. [2020-10-16 01:36:10,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 22 transitions, 114 flow [2020-10-16 01:36:10,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 22 transitions, 102 flow, removed 4 selfloop flow, removed 3 redundant places. [2020-10-16 01:36:10,274 INFO L241 Difference]: Finished difference. Result has 33 places, 17 transitions, 68 flow [2020-10-16 01:36:10,275 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=33, PETRI_TRANSITIONS=17} [2020-10-16 01:36:10,275 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2020-10-16 01:36:10,275 INFO L481 AbstractCegarLoop]: Abstraction has has 33 places, 17 transitions, 68 flow [2020-10-16 01:36:10,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:36:10,275 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:36:10,275 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:36:10,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:36:10,276 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:36:10,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:36:10,276 INFO L82 PathProgramCache]: Analyzing trace with hash -2068679953, now seen corresponding path program 1 times [2020-10-16 01:36:10,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:36:10,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433092307] [2020-10-16 01:36:10,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:36:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:36:10,344 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 01:36:10,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433092307] [2020-10-16 01:36:10,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:36:10,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:36:10,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867961934] [2020-10-16 01:36:10,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:36:10,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:36:10,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:36:10,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:36:10,348 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 109 [2020-10-16 01:36:10,349 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 17 transitions, 68 flow. Second operand 4 states. [2020-10-16 01:36:10,349 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:36:10,349 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 109 [2020-10-16 01:36:10,349 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:36:10,401 INFO L129 PetriNetUnfolder]: 28/69 cut-off events. [2020-10-16 01:36:10,401 INFO L130 PetriNetUnfolder]: For 154/165 co-relation queries the response was YES. [2020-10-16 01:36:10,402 INFO L80 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 69 events. 28/69 cut-off events. For 154/165 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 210 event pairs, 12 based on Foata normal form. 9/72 useless extension candidates. Maximal degree in co-relation 165. Up to 45 conditions per place. [2020-10-16 01:36:10,403 INFO L132 encePairwiseOnDemand]: 103/109 looper letters, 5 selfloop transitions, 4 changer transitions 7/27 dead transitions. [2020-10-16 01:36:10,403 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 120 flow [2020-10-16 01:36:10,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:36:10,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:36:10,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 418 transitions. [2020-10-16 01:36:10,406 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7669724770642202 [2020-10-16 01:36:10,406 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 418 transitions. [2020-10-16 01:36:10,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 418 transitions. [2020-10-16 01:36:10,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:36:10,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 418 transitions. [2020-10-16 01:36:10,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:36:10,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:36:10,409 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:36:10,410 INFO L185 Difference]: Start difference. First operand has 33 places, 17 transitions, 68 flow. Second operand 5 states and 418 transitions. [2020-10-16 01:36:10,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 120 flow [2020-10-16 01:36:10,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 102 flow, removed 3 selfloop flow, removed 6 redundant places. [2020-10-16 01:36:10,412 INFO L241 Difference]: Finished difference. Result has 34 places, 20 transitions, 86 flow [2020-10-16 01:36:10,412 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=86, PETRI_PLACES=34, PETRI_TRANSITIONS=20} [2020-10-16 01:36:10,413 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2020-10-16 01:36:10,413 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 20 transitions, 86 flow [2020-10-16 01:36:10,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:36:10,413 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:36:10,413 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:36:10,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:36:10,414 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:36:10,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:36:10,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1341191340, now seen corresponding path program 1 times [2020-10-16 01:36:10,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:36:10,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517310670] [2020-10-16 01:36:10,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:36:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:36:10,470 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 01:36:10,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517310670] [2020-10-16 01:36:10,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:36:10,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:36:10,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721748846] [2020-10-16 01:36:10,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:36:10,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:36:10,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:36:10,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:36:10,473 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 109 [2020-10-16 01:36:10,474 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 20 transitions, 86 flow. Second operand 5 states. [2020-10-16 01:36:10,474 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:36:10,474 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 109 [2020-10-16 01:36:10,474 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:36:10,536 INFO L129 PetriNetUnfolder]: 16/50 cut-off events. [2020-10-16 01:36:10,536 INFO L130 PetriNetUnfolder]: For 83/128 co-relation queries the response was YES. [2020-10-16 01:36:10,536 INFO L80 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 50 events. 16/50 cut-off events. For 83/128 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 115 event pairs, 2 based on Foata normal form. 16/64 useless extension candidates. Maximal degree in co-relation 168. Up to 35 conditions per place. [2020-10-16 01:36:10,537 INFO L132 encePairwiseOnDemand]: 103/109 looper letters, 5 selfloop transitions, 7 changer transitions 7/30 dead transitions. [2020-10-16 01:36:10,537 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 30 transitions, 182 flow [2020-10-16 01:36:10,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 01:36:10,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 01:36:10,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 501 transitions. [2020-10-16 01:36:10,540 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7660550458715596 [2020-10-16 01:36:10,540 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 501 transitions. [2020-10-16 01:36:10,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 501 transitions. [2020-10-16 01:36:10,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:36:10,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 501 transitions. [2020-10-16 01:36:10,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 01:36:10,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 01:36:10,544 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 01:36:10,544 INFO L185 Difference]: Start difference. First operand has 34 places, 20 transitions, 86 flow. Second operand 6 states and 501 transitions. [2020-10-16 01:36:10,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 30 transitions, 182 flow [2020-10-16 01:36:10,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 176 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 01:36:10,547 INFO L241 Difference]: Finished difference. Result has 38 places, 23 transitions, 136 flow [2020-10-16 01:36:10,547 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=136, PETRI_PLACES=38, PETRI_TRANSITIONS=23} [2020-10-16 01:36:10,547 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2020-10-16 01:36:10,548 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 23 transitions, 136 flow [2020-10-16 01:36:10,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:36:10,548 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:36:10,548 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:36:10,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:36:10,548 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:36:10,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:36:10,549 INFO L82 PathProgramCache]: Analyzing trace with hash 568448593, now seen corresponding path program 1 times [2020-10-16 01:36:10,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:36:10,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126647213] [2020-10-16 01:36:10,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:36:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:36:10,613 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 01:36:10,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126647213] [2020-10-16 01:36:10,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:36:10,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 01:36:10,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012348108] [2020-10-16 01:36:10,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 01:36:10,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:36:10,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 01:36:10,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 01:36:10,617 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 109 [2020-10-16 01:36:10,617 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 23 transitions, 136 flow. Second operand 6 states. [2020-10-16 01:36:10,617 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:36:10,618 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 109 [2020-10-16 01:36:10,618 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:36:10,674 INFO L129 PetriNetUnfolder]: 7/32 cut-off events. [2020-10-16 01:36:10,674 INFO L130 PetriNetUnfolder]: For 98/136 co-relation queries the response was YES. [2020-10-16 01:36:10,675 INFO L80 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 32 events. 7/32 cut-off events. For 98/136 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 45 event pairs, 0 based on Foata normal form. 14/45 useless extension candidates. Maximal degree in co-relation 125. Up to 20 conditions per place. [2020-10-16 01:36:10,675 INFO L132 encePairwiseOnDemand]: 103/109 looper letters, 2 selfloop transitions, 10 changer transitions 4/27 dead transitions. [2020-10-16 01:36:10,675 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 27 transitions, 204 flow [2020-10-16 01:36:10,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:36:10,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:36:10,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 578 transitions. [2020-10-16 01:36:10,678 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7575360419397117 [2020-10-16 01:36:10,678 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 578 transitions. [2020-10-16 01:36:10,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 578 transitions. [2020-10-16 01:36:10,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:36:10,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 578 transitions. [2020-10-16 01:36:10,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:36:10,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:36:10,682 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:36:10,682 INFO L185 Difference]: Start difference. First operand has 38 places, 23 transitions, 136 flow. Second operand 7 states and 578 transitions. [2020-10-16 01:36:10,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 27 transitions, 204 flow [2020-10-16 01:36:10,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 27 transitions, 168 flow, removed 14 selfloop flow, removed 4 redundant places. [2020-10-16 01:36:10,685 INFO L241 Difference]: Finished difference. Result has 41 places, 23 transitions, 138 flow [2020-10-16 01:36:10,686 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=138, PETRI_PLACES=41, PETRI_TRANSITIONS=23} [2020-10-16 01:36:10,686 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2020-10-16 01:36:10,686 INFO L481 AbstractCegarLoop]: Abstraction has has 41 places, 23 transitions, 138 flow [2020-10-16 01:36:10,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 01:36:10,686 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:36:10,687 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 01:36:10,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:36:10,687 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:36:10,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:36:10,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1010226051, now seen corresponding path program 1 times [2020-10-16 01:36:10,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:36:10,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115979688] [2020-10-16 01:36:10,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:36:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:36:10,715 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 01:36:10,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115979688] [2020-10-16 01:36:10,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:36:10,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:36:10,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640690286] [2020-10-16 01:36:10,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:36:10,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:36:10,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:36:10,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:36:10,718 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 109 [2020-10-16 01:36:10,718 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 23 transitions, 138 flow. Second operand 3 states. [2020-10-16 01:36:10,718 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:36:10,719 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 109 [2020-10-16 01:36:10,719 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:36:10,726 INFO L129 PetriNetUnfolder]: 5/25 cut-off events. [2020-10-16 01:36:10,727 INFO L130 PetriNetUnfolder]: For 47/52 co-relation queries the response was YES. [2020-10-16 01:36:10,727 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 25 events. 5/25 cut-off events. For 47/52 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 22 event pairs, 0 based on Foata normal form. 1/25 useless extension candidates. Maximal degree in co-relation 79. Up to 11 conditions per place. [2020-10-16 01:36:10,727 INFO L132 encePairwiseOnDemand]: 107/109 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2020-10-16 01:36:10,728 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 22 transitions, 134 flow [2020-10-16 01:36:10,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:36:10,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:36:10,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 277 transitions. [2020-10-16 01:36:10,730 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8470948012232415 [2020-10-16 01:36:10,730 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 277 transitions. [2020-10-16 01:36:10,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 277 transitions. [2020-10-16 01:36:10,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:36:10,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 277 transitions. [2020-10-16 01:36:10,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:36:10,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:36:10,732 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:36:10,732 INFO L185 Difference]: Start difference. First operand has 41 places, 23 transitions, 138 flow. Second operand 3 states and 277 transitions. [2020-10-16 01:36:10,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 22 transitions, 134 flow [2020-10-16 01:36:10,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 22 transitions, 100 flow, removed 9 selfloop flow, removed 5 redundant places. [2020-10-16 01:36:10,734 INFO L241 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2020-10-16 01:36:10,734 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=33, 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=35, PETRI_TRANSITIONS=0} [2020-10-16 01:36:10,735 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2020-10-16 01:36:10,735 INFO L481 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2020-10-16 01:36:10,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:36:10,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 01:36:10,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:36:10 BasicIcfg [2020-10-16 01:36:10,739 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:36:10,742 INFO L168 Benchmark]: Toolchain (without parser) took 4305.83 ms. Allocated memory was 252.7 MB in the beginning and 371.2 MB in the end (delta: 118.5 MB). Free memory was 208.4 MB in the beginning and 254.0 MB in the end (delta: -45.5 MB). Peak memory consumption was 73.0 MB. Max. memory is 14.2 GB. [2020-10-16 01:36:10,742 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 252.7 MB. Free memory is still 229.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:36:10,743 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.00 ms. Allocated memory was 252.7 MB in the beginning and 317.7 MB in the end (delta: 65.0 MB). Free memory was 208.4 MB in the beginning and 271.0 MB in the end (delta: -62.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 14.2 GB. [2020-10-16 01:36:10,744 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.28 ms. Allocated memory is still 317.7 MB. Free memory was 271.0 MB in the beginning and 268.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:36:10,745 INFO L168 Benchmark]: Boogie Preprocessor took 27.55 ms. Allocated memory is still 317.7 MB. Free memory was 268.5 MB in the beginning and 266.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:36:10,745 INFO L168 Benchmark]: RCFGBuilder took 505.72 ms. Allocated memory is still 317.7 MB. Free memory was 266.0 MB in the beginning and 244.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 01:36:10,746 INFO L168 Benchmark]: TraceAbstraction took 3039.10 ms. Allocated memory was 317.7 MB in the beginning and 371.2 MB in the end (delta: 53.5 MB). Free memory was 244.2 MB in the beginning and 254.0 MB in the end (delta: -9.8 MB). Peak memory consumption was 43.7 MB. Max. memory is 14.2 GB. [2020-10-16 01:36:10,751 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 252.7 MB. Free memory is still 229.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 677.00 ms. Allocated memory was 252.7 MB in the beginning and 317.7 MB in the end (delta: 65.0 MB). Free memory was 208.4 MB in the beginning and 271.0 MB in the end (delta: -62.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 51.28 ms. Allocated memory is still 317.7 MB. Free memory was 271.0 MB in the beginning and 268.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.55 ms. Allocated memory is still 317.7 MB. Free memory was 268.5 MB in the beginning and 266.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 505.72 ms. Allocated memory is still 317.7 MB. Free memory was 266.0 MB in the beginning and 244.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3039.10 ms. Allocated memory was 317.7 MB in the beginning and 371.2 MB in the end (delta: 53.5 MB). Free memory was 244.2 MB in the beginning and 254.0 MB in the end (delta: -9.8 MB). Peak memory consumption was 43.7 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: 1.5s, 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: 2.9s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 32 SDtfs, 21 SDslu, 20 SDs, 0 SdLazy, 119 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=7, 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, 0.3s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 3030 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...