/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/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 17:45:55,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 17:45:55,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 17:45:55,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 17:45:55,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 17:45:55,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 17:45:55,107 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 17:45:55,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 17:45:55,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 17:45:55,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 17:45:55,118 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 17:45:55,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 17:45:55,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 17:45:55,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 17:45:55,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 17:45:55,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 17:45:55,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 17:45:55,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 17:45:55,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 17:45:55,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 17:45:55,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 17:45:55,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 17:45:55,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 17:45:55,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 17:45:55,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-09 17:45:55,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-09 17:45:55,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-09 17:45:55,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-09 17:45:55,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-09 17:45:55,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-09 17:45:55,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 17:45:55,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 17:45:55,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 17:45:55,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 17:45:55,166 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 17:45:55,166 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 17:45:55,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 17:45:55,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 17:45:55,171 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 17:45:55,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 17:45:55,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 17:45:55,173 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-09 17:45:55,211 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 17:45:55,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 17:45:55,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 17:45:55,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 17:45:55,214 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 17:45:55,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 17:45:55,214 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 17:45:55,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 17:45:55,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 17:45:55,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 17:45:55,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 17:45:55,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 17:45:55,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 17:45:55,216 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 17:45:55,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 17:45:55,217 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 17:45:55,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 17:45:55,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 17:45:55,217 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 17:45:55,217 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 17:45:55,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 17:45:55,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 17:45:55,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 17:45:55,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 17:45:55,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 17:45:55,219 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-10-09 17:45:55,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 17:45:55,219 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-09 17:45:55,219 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-09 17:45:55,220 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 17:45:55,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 17:45:55,530 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 17:45:55,533 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 17:45:55,535 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 17:45:55,535 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 17:45:55,536 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.opt.i [2020-10-09 17:45:55,599 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a038d536e/32efea629e174081a2278eced82489c4/FLAGeaae474a9 [2020-10-09 17:45:56,079 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 17:45:56,080 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe010_tso.opt.i [2020-10-09 17:45:56,097 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a038d536e/32efea629e174081a2278eced82489c4/FLAGeaae474a9 [2020-10-09 17:45:56,387 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a038d536e/32efea629e174081a2278eced82489c4 [2020-10-09 17:45:56,398 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 17:45:56,400 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 17:45:56,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 17:45:56,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 17:45:56,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 17:45:56,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 05:45:56" (1/1) ... [2020-10-09 17:45:56,411 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dfe6490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:45:56, skipping insertion in model container [2020-10-09 17:45:56,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 05:45:56" (1/1) ... [2020-10-09 17:45:56,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 17:45:56,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 17:45:56,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 17:45:56,940 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 17:45:56,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 17:45:57,073 INFO L208 MainTranslator]: Completed translation [2020-10-09 17:45:57,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:45:57 WrapperNode [2020-10-09 17:45:57,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 17:45:57,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 17:45:57,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 17:45:57,075 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 17:45:57,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:45:57" (1/1) ... [2020-10-09 17:45:57,100 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:45:57" (1/1) ... [2020-10-09 17:45:57,123 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 17:45:57,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 17:45:57,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 17:45:57,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 17:45:57,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:45:57" (1/1) ... [2020-10-09 17:45:57,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:45:57" (1/1) ... [2020-10-09 17:45:57,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:45:57" (1/1) ... [2020-10-09 17:45:57,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:45:57" (1/1) ... [2020-10-09 17:45:57,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:45:57" (1/1) ... [2020-10-09 17:45:57,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:45:57" (1/1) ... [2020-10-09 17:45:57,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:45:57" (1/1) ... [2020-10-09 17:45:57,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 17:45:57,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 17:45:57,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 17:45:57,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 17:45:57,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:45:57" (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 [2020-10-09 17:45:57,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 17:45:57,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-09 17:45:57,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 17:45:57,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 17:45:57,207 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-09 17:45:57,208 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-09 17:45:57,208 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-09 17:45:57,208 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-09 17:45:57,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-09 17:45:57,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 17:45:57,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 17:45:57,210 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 17:45:57,500 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 17:45:57,500 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-09 17:45:57,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 05:45:57 BoogieIcfgContainer [2020-10-09 17:45:57,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 17:45:57,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 17:45:57,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 17:45:57,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 17:45:57,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 05:45:56" (1/3) ... [2020-10-09 17:45:57,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e19d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 05:45:57, skipping insertion in model container [2020-10-09 17:45:57,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:45:57" (2/3) ... [2020-10-09 17:45:57,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e19d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 05:45:57, skipping insertion in model container [2020-10-09 17:45:57,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 05:45:57" (3/3) ... [2020-10-09 17:45:57,511 INFO L111 eAbstractionObserver]: Analyzing ICFG safe010_tso.opt.i [2020-10-09 17:45:57,523 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 17:45:57,530 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 17:45:57,531 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 17:45:57,566 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:57,567 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:57,567 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:57,567 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:57,568 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:57,568 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:57,569 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:57,569 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:57,570 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:57,570 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:57,570 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:57,571 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:57,575 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:57,575 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:57,575 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:57,576 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:57,581 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:57,581 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:57,582 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:57,582 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:57,597 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-09 17:45:57,615 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 17:45:57,615 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-09 17:45:57,615 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 17:45:57,615 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 17:45:57,615 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 17:45:57,616 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 17:45:57,616 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 17:45:57,616 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 17:45:57,628 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-10-09 17:45:57,669 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-10-09 17:45:57,670 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 17:45:57,674 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-10-09 17:45:57,675 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 55 transitions, 120 flow [2020-10-09 17:45:57,680 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 44 transitions, 94 flow [2020-10-09 17:45:57,695 INFO L129 PetriNetUnfolder]: 1/43 cut-off events. [2020-10-09 17:45:57,696 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 17:45:57,696 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:45:57,697 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:45:57,697 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:45:57,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:45:57,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1893999798, now seen corresponding path program 1 times [2020-10-09 17:45:57,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:45:57,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183660567] [2020-10-09 17:45:57,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-09 17:45:57,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:45:57,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 17:45:57,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:45:57,939 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:45:57,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:45:57,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:45:58,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:45:58,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183660567] [2020-10-09 17:45:58,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:45:58,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:45:58,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081935343] [2020-10-09 17:45:58,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:45:58,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:45:58,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:45:58,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:45:58,264 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 55 [2020-10-09 17:45:58,266 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 94 flow. Second operand 8 states. [2020-10-09 17:45:58,267 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:45:58,267 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 55 [2020-10-09 17:45:58,268 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:45:58,395 INFO L129 PetriNetUnfolder]: 3/58 cut-off events. [2020-10-09 17:45:58,396 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 17:45:58,396 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 58 events. 3/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 78 event pairs, 0 based on Foata normal form. 4/61 useless extension candidates. Maximal degree in co-relation 63. Up to 7 conditions per place. [2020-10-09 17:45:58,398 INFO L132 encePairwiseOnDemand]: 48/55 looper letters, 6 selfloop transitions, 2 changer transitions 11/53 dead transitions. [2020-10-09 17:45:58,398 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 53 transitions, 148 flow [2020-10-09 17:45:58,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 17:45:58,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 17:45:58,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 427 transitions. [2020-10-09 17:45:58,415 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8626262626262626 [2020-10-09 17:45:58,416 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 427 transitions. [2020-10-09 17:45:58,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 427 transitions. [2020-10-09 17:45:58,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:45:58,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 427 transitions. [2020-10-09 17:45:58,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 17:45:58,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 17:45:58,434 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 17:45:58,436 INFO L185 Difference]: Start difference. First operand has 50 places, 44 transitions, 94 flow. Second operand 9 states and 427 transitions. [2020-10-09 17:45:58,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 53 transitions, 148 flow [2020-10-09 17:45:58,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 53 transitions, 146 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-09 17:45:58,445 INFO L241 Difference]: Finished difference. Result has 63 places, 42 transitions, 108 flow [2020-10-09 17:45:58,448 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=108, PETRI_PLACES=63, PETRI_TRANSITIONS=42} [2020-10-09 17:45:58,449 INFO L341 CegarLoopForPetriNet]: 50 programPoint places, 13 predicate places. [2020-10-09 17:45:58,449 INFO L481 AbstractCegarLoop]: Abstraction has has 63 places, 42 transitions, 108 flow [2020-10-09 17:45:58,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:45:58,449 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:45:58,450 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:45:58,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-09 17:45:58,663 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:45:58,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:45:58,663 INFO L82 PathProgramCache]: Analyzing trace with hash 356594891, now seen corresponding path program 1 times [2020-10-09 17:45:58,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:45:58,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1096087700] [2020-10-09 17:45:58,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-09 17:45:58,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:45:58,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 17:45:58,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:45:58,747 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:45:58,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:45:58,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:45:58,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:45:58,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1096087700] [2020-10-09 17:45:58,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:45:58,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:45:58,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186114886] [2020-10-09 17:45:58,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:45:58,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:45:58,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:45:58,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:45:58,964 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 55 [2020-10-09 17:45:58,964 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 42 transitions, 108 flow. Second operand 8 states. [2020-10-09 17:45:58,964 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:45:58,965 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 55 [2020-10-09 17:45:58,965 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:45:59,112 INFO L129 PetriNetUnfolder]: 18/139 cut-off events. [2020-10-09 17:45:59,112 INFO L130 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2020-10-09 17:45:59,113 INFO L80 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 139 events. 18/139 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 550 event pairs, 0 based on Foata normal form. 5/142 useless extension candidates. Maximal degree in co-relation 229. Up to 15 conditions per place. [2020-10-09 17:45:59,114 INFO L132 encePairwiseOnDemand]: 48/55 looper letters, 10 selfloop transitions, 5 changer transitions 23/71 dead transitions. [2020-10-09 17:45:59,115 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 71 transitions, 282 flow [2020-10-09 17:45:59,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 17:45:59,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-09 17:45:59,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 613 transitions. [2020-10-09 17:45:59,119 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8573426573426574 [2020-10-09 17:45:59,119 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 613 transitions. [2020-10-09 17:45:59,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 613 transitions. [2020-10-09 17:45:59,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:45:59,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 613 transitions. [2020-10-09 17:45:59,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-09 17:45:59,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-09 17:45:59,125 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-09 17:45:59,125 INFO L185 Difference]: Start difference. First operand has 63 places, 42 transitions, 108 flow. Second operand 13 states and 613 transitions. [2020-10-09 17:45:59,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 71 transitions, 282 flow [2020-10-09 17:45:59,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 71 transitions, 230 flow, removed 24 selfloop flow, removed 8 redundant places. [2020-10-09 17:45:59,130 INFO L241 Difference]: Finished difference. Result has 71 places, 44 transitions, 134 flow [2020-10-09 17:45:59,131 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=134, PETRI_PLACES=71, PETRI_TRANSITIONS=44} [2020-10-09 17:45:59,131 INFO L341 CegarLoopForPetriNet]: 50 programPoint places, 21 predicate places. [2020-10-09 17:45:59,132 INFO L481 AbstractCegarLoop]: Abstraction has has 71 places, 44 transitions, 134 flow [2020-10-09 17:45:59,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:45:59,132 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:45:59,132 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:45:59,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-09 17:45:59,346 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:45:59,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:45:59,347 INFO L82 PathProgramCache]: Analyzing trace with hash 908643020, now seen corresponding path program 1 times [2020-10-09 17:45:59,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:45:59,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [44517061] [2020-10-09 17:45:59,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-09 17:45:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:45:59,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 17:45:59,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:45:59,435 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:45:59,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:45:59,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:45:59,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:45:59,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [44517061] [2020-10-09 17:45:59,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:45:59,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 17:45:59,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897330270] [2020-10-09 17:45:59,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 17:45:59,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:45:59,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 17:45:59,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 17:45:59,725 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 55 [2020-10-09 17:45:59,726 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 44 transitions, 134 flow. Second operand 9 states. [2020-10-09 17:45:59,726 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:45:59,726 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 55 [2020-10-09 17:45:59,726 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:45:59,881 INFO L129 PetriNetUnfolder]: 8/96 cut-off events. [2020-10-09 17:45:59,881 INFO L130 PetriNetUnfolder]: For 91/112 co-relation queries the response was YES. [2020-10-09 17:45:59,882 INFO L80 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 96 events. 8/96 cut-off events. For 91/112 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 307 event pairs, 0 based on Foata normal form. 4/98 useless extension candidates. Maximal degree in co-relation 193. Up to 11 conditions per place. [2020-10-09 17:45:59,883 INFO L132 encePairwiseOnDemand]: 47/55 looper letters, 6 selfloop transitions, 4 changer transitions 14/56 dead transitions. [2020-10-09 17:45:59,885 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 56 transitions, 239 flow [2020-10-09 17:45:59,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 17:45:59,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-09 17:45:59,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 454 transitions. [2020-10-09 17:45:59,889 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8254545454545454 [2020-10-09 17:45:59,889 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 454 transitions. [2020-10-09 17:45:59,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 454 transitions. [2020-10-09 17:45:59,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:45:59,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 454 transitions. [2020-10-09 17:45:59,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-09 17:45:59,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-09 17:45:59,893 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-09 17:45:59,893 INFO L185 Difference]: Start difference. First operand has 71 places, 44 transitions, 134 flow. Second operand 10 states and 454 transitions. [2020-10-09 17:45:59,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 56 transitions, 239 flow [2020-10-09 17:45:59,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 56 transitions, 197 flow, removed 21 selfloop flow, removed 9 redundant places. [2020-10-09 17:45:59,900 INFO L241 Difference]: Finished difference. Result has 70 places, 42 transitions, 135 flow [2020-10-09 17:45:59,900 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=135, PETRI_PLACES=70, PETRI_TRANSITIONS=42} [2020-10-09 17:45:59,900 INFO L341 CegarLoopForPetriNet]: 50 programPoint places, 20 predicate places. [2020-10-09 17:45:59,901 INFO L481 AbstractCegarLoop]: Abstraction has has 70 places, 42 transitions, 135 flow [2020-10-09 17:45:59,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 17:45:59,901 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:45:59,901 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:46:00,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-09 17:46:00,121 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:46:00,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:46:00,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1236144910, now seen corresponding path program 1 times [2020-10-09 17:46:00,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:46:00,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1008942356] [2020-10-09 17:46:00,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-09 17:46:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:46:00,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 17:46:00,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:46:00,198 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:46:00,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:46:00,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:46:00,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:46:00,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1008942356] [2020-10-09 17:46:00,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:46:00,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:46:00,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158414837] [2020-10-09 17:46:00,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:46:00,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:46:00,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:46:00,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:46:00,303 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 55 [2020-10-09 17:46:00,303 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 42 transitions, 135 flow. Second operand 8 states. [2020-10-09 17:46:00,304 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:46:00,304 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 55 [2020-10-09 17:46:00,304 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:46:00,466 INFO L129 PetriNetUnfolder]: 16/87 cut-off events. [2020-10-09 17:46:00,466 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-09 17:46:00,467 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 87 events. 16/87 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 260 event pairs, 0 based on Foata normal form. 4/88 useless extension candidates. Maximal degree in co-relation 145. Up to 10 conditions per place. [2020-10-09 17:46:00,467 INFO L132 encePairwiseOnDemand]: 47/55 looper letters, 0 selfloop transitions, 0 changer transitions 57/57 dead transitions. [2020-10-09 17:46:00,467 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 57 transitions, 203 flow [2020-10-09 17:46:00,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-09 17:46:00,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-09 17:46:00,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 549 transitions. [2020-10-09 17:46:00,470 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8318181818181818 [2020-10-09 17:46:00,470 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 549 transitions. [2020-10-09 17:46:00,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 549 transitions. [2020-10-09 17:46:00,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:46:00,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 549 transitions. [2020-10-09 17:46:00,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 13 states. [2020-10-09 17:46:00,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 13 states. [2020-10-09 17:46:00,474 INFO L81 ComplementDD]: Finished complementDD. Result 13 states. [2020-10-09 17:46:00,475 INFO L185 Difference]: Start difference. First operand has 70 places, 42 transitions, 135 flow. Second operand 12 states and 549 transitions. [2020-10-09 17:46:00,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 57 transitions, 203 flow [2020-10-09 17:46:00,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 57 transitions, 183 flow, removed 0 selfloop flow, removed 9 redundant places. [2020-10-09 17:46:00,477 INFO L241 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2020-10-09 17:46:00,477 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=60, PETRI_TRANSITIONS=0} [2020-10-09 17:46:00,477 INFO L341 CegarLoopForPetriNet]: 50 programPoint places, 10 predicate places. [2020-10-09 17:46:00,477 INFO L481 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2020-10-09 17:46:00,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:46:00,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-09 17:46:00,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 05:46:00 BasicIcfg [2020-10-09 17:46:00,699 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 17:46:00,702 INFO L168 Benchmark]: Toolchain (without parser) took 4301.05 ms. Allocated memory was 252.7 MB in the beginning and 374.3 MB in the end (delta: 121.6 MB). Free memory was 208.0 MB in the beginning and 290.5 MB in the end (delta: -82.4 MB). Peak memory consumption was 39.2 MB. Max. memory is 14.2 GB. [2020-10-09 17:46:00,703 INFO L168 Benchmark]: CDTParser took 0.20 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. [2020-10-09 17:46:00,705 INFO L168 Benchmark]: CACSL2BoogieTranslator took 670.82 ms. Allocated memory was 252.7 MB in the beginning and 318.8 MB in the end (delta: 66.1 MB). Free memory was 208.0 MB in the beginning and 274.1 MB in the end (delta: -66.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 14.2 GB. [2020-10-09 17:46:00,706 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.48 ms. Allocated memory is still 318.8 MB. Free memory was 274.1 MB in the beginning and 271.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 17:46:00,708 INFO L168 Benchmark]: Boogie Preprocessor took 26.13 ms. Allocated memory is still 318.8 MB. Free memory was 271.6 MB in the beginning and 269.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 17:46:00,714 INFO L168 Benchmark]: RCFGBuilder took 353.10 ms. Allocated memory is still 318.8 MB. Free memory was 269.1 MB in the beginning and 249.8 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. [2020-10-09 17:46:00,715 INFO L168 Benchmark]: TraceAbstraction took 3195.21 ms. Allocated memory was 318.8 MB in the beginning and 374.3 MB in the end (delta: 55.6 MB). Free memory was 249.8 MB in the beginning and 290.5 MB in the end (delta: -40.7 MB). Peak memory consumption was 14.9 MB. Max. memory is 14.2 GB. [2020-10-09 17:46:00,726 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 670.82 ms. Allocated memory was 252.7 MB in the beginning and 318.8 MB in the end (delta: 66.1 MB). Free memory was 208.0 MB in the beginning and 274.1 MB in the end (delta: -66.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 48.48 ms. Allocated memory is still 318.8 MB. Free memory was 274.1 MB in the beginning and 271.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.13 ms. Allocated memory is still 318.8 MB. Free memory was 271.6 MB in the beginning and 269.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 353.10 ms. Allocated memory is still 318.8 MB. Free memory was 269.1 MB in the beginning and 249.8 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3195.21 ms. Allocated memory was 318.8 MB in the beginning and 374.3 MB in the end (delta: 55.6 MB). Free memory was 249.8 MB in the beginning and 290.5 MB in the end (delta: -40.7 MB). Peak memory consumption was 14.9 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 54 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: 3.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 170 SDslu, 238 SDs, 0 SdLazy, 222 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 282 GetRequests, 222 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=135occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 131 NumberOfCodeBlocks, 131 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 254 ConstructedInterpolants, 0 QuantifiedInterpolants, 21859 SizeOfPredicates, 22 NumberOfNonLiveVariables, 320 ConjunctsInSsa, 27 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...