/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-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread-wmm/thin001_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:12:18,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:12:18,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:12:18,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:12:18,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:12:18,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:12:18,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:12:18,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:12:18,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:12:18,281 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:12:18,282 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:12:18,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:12:18,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:12:18,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:12:18,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:12:18,292 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:12:18,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:12:18,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:12:18,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:12:18,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:12:18,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:12:18,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:12:18,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:12:18,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:12:18,314 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 05:12:18,314 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 05:12:18,315 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 05:12:18,315 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 05:12:18,316 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 05:12:18,317 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 05:12:18,317 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:12:18,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:12:18,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:12:18,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:12:18,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:12:18,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:12:18,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:12:18,329 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:12:18,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:12:18,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:12:18,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:12:18,331 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-SemanticLooper.epf [2020-10-16 05:12:18,368 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:12:18,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:12:18,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:12:18,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:12:18,370 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:12:18,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:12:18,371 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:12:18,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:12:18,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:12:18,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:12:18,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:12:18,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:12:18,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:12:18,372 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:12:18,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:12:18,372 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:12:18,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:12:18,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:12:18,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:12:18,373 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:12:18,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:12:18,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:12:18,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:12:18,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:12:18,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:12:18,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:12:18,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:12:18,374 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:12:18,375 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:12:18,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:12:18,682 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:12:18,685 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:12:18,686 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:12:18,687 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:12:18,687 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin001_tso.opt.i [2020-10-16 05:12:18,750 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b67512afa/097a92c28d9a491c968a08dffd901803/FLAG5c5a715bd [2020-10-16 05:12:19,250 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:12:19,251 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin001_tso.opt.i [2020-10-16 05:12:19,268 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b67512afa/097a92c28d9a491c968a08dffd901803/FLAG5c5a715bd [2020-10-16 05:12:19,526 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b67512afa/097a92c28d9a491c968a08dffd901803 [2020-10-16 05:12:19,534 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:12:19,535 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:12:19,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:12:19,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:12:19,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:12:19,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:12:19" (1/1) ... [2020-10-16 05:12:19,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cd10c2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:19, skipping insertion in model container [2020-10-16 05:12:19,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:12:19" (1/1) ... [2020-10-16 05:12:19,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:12:19,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:12:20,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:12:20,099 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:12:20,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:12:20,265 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:12:20,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:20 WrapperNode [2020-10-16 05:12:20,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:12:20,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:12:20,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:12:20,267 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:12:20,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:20" (1/1) ... [2020-10-16 05:12:20,293 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:20" (1/1) ... [2020-10-16 05:12:20,316 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:12:20,317 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:12:20,317 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:12:20,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:12:20,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:20" (1/1) ... [2020-10-16 05:12:20,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:20" (1/1) ... [2020-10-16 05:12:20,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:20" (1/1) ... [2020-10-16 05:12:20,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:20" (1/1) ... [2020-10-16 05:12:20,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:20" (1/1) ... [2020-10-16 05:12:20,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:20" (1/1) ... [2020-10-16 05:12:20,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:20" (1/1) ... [2020-10-16 05:12:20,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:12:20,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:12:20,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:12:20,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:12:20,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:20" (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 05:12:20,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:12:20,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 05:12:20,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:12:20,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:12:20,414 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 05:12:20,414 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 05:12:20,414 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 05:12:20,414 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 05:12:20,415 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 05:12:20,415 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 05:12:20,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 05:12:20,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:12:20,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:12:20,417 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 05:12:20,788 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:12:20,789 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 05:12:20,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:12:20 BoogieIcfgContainer [2020-10-16 05:12:20,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:12:20,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:12:20,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:12:20,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:12:20,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:12:19" (1/3) ... [2020-10-16 05:12:20,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63ae9403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:12:20, skipping insertion in model container [2020-10-16 05:12:20,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:20" (2/3) ... [2020-10-16 05:12:20,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63ae9403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:12:20, skipping insertion in model container [2020-10-16 05:12:20,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:12:20" (3/3) ... [2020-10-16 05:12:20,800 INFO L111 eAbstractionObserver]: Analyzing ICFG thin001_tso.opt.i [2020-10-16 05:12:20,811 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:12:20,817 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:12:20,818 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:12:20,845 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:20,845 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:20,846 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:20,846 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:20,847 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:20,847 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:20,847 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:20,848 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:20,848 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:20,848 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:20,849 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:20,849 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:20,849 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:20,849 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:20,850 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:20,850 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:20,850 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:20,850 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:20,854 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:20,854 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:20,854 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:20,855 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:20,861 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:20,862 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:20,862 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:20,862 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:20,865 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:20,865 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:20,865 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:20,865 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:20,880 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 05:12:20,900 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:12:20,900 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:12:20,900 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:12:20,900 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:12:20,900 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:12:20,901 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:12:20,901 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:12:20,901 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:12:20,916 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-10-16 05:12:20,960 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-10-16 05:12:20,960 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:12:20,968 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 05:12:20,969 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 71 transitions, 157 flow [2020-10-16 05:12:20,975 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 57 transitions, 123 flow [2020-10-16 05:12:20,977 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:12:20,980 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 57 transitions, 123 flow [2020-10-16 05:12:20,983 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 57 transitions, 123 flow [2020-10-16 05:12:20,983 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 66 places, 57 transitions, 123 flow [2020-10-16 05:12:21,003 INFO L129 PetriNetUnfolder]: 1/57 cut-off events. [2020-10-16 05:12:21,003 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:12:21,004 INFO L80 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 57 events. 1/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2020-10-16 05:12:21,006 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 05:12:22,334 INFO L132 LiptonReduction]: Checked pairs total: 1796 [2020-10-16 05:12:22,334 INFO L134 LiptonReduction]: Total number of compositions: 44 [2020-10-16 05:12:22,337 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1362 [2020-10-16 05:12:22,346 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2020-10-16 05:12:22,346 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:12:22,347 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:22,348 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:22,349 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:22,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:22,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1282912004, now seen corresponding path program 1 times [2020-10-16 05:12:22,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:22,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526051043] [2020-10-16 05:12:22,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:22,596 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 05:12:22,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526051043] [2020-10-16 05:12:22,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:22,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:12:22,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570593239] [2020-10-16 05:12:22,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:12:22,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:22,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:12:22,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:12:22,633 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 115 [2020-10-16 05:12:22,635 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states. [2020-10-16 05:12:22,636 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:22,636 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 115 [2020-10-16 05:12:22,638 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:22,658 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 05:12:22,659 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:12:22,659 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. 3/20 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 05:12:22,661 INFO L132 encePairwiseOnDemand]: 111/115 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2020-10-16 05:12:22,661 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 49 flow [2020-10-16 05:12:22,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:12:22,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:12:22,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2020-10-16 05:12:22,678 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8608695652173913 [2020-10-16 05:12:22,679 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2020-10-16 05:12:22,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2020-10-16 05:12:22,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:22,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2020-10-16 05:12:22,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:12:22,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:12:22,697 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:12:22,699 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 297 transitions. [2020-10-16 05:12:22,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 49 flow [2020-10-16 05:12:22,704 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 05:12:22,706 INFO L241 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2020-10-16 05:12:22,709 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, 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 05:12:22,710 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 05:12:22,710 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2020-10-16 05:12:22,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:12:22,710 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:22,711 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:22,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:12:22,711 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:22,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:22,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1130280492, now seen corresponding path program 1 times [2020-10-16 05:12:22,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:22,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984185615] [2020-10-16 05:12:22,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:22,778 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 05:12:22,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984185615] [2020-10-16 05:12:22,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:22,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:12:22,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180294146] [2020-10-16 05:12:22,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:12:22,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:22,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:12:22,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:12:22,784 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 115 [2020-10-16 05:12:22,784 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states. [2020-10-16 05:12:22,784 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:22,785 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 115 [2020-10-16 05:12:22,785 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:22,824 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2020-10-16 05:12:22,824 INFO L130 PetriNetUnfolder]: For 5/12 co-relation queries the response was YES. [2020-10-16 05:12:22,825 INFO L80 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 22 events. 0/22 cut-off events. For 5/12 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 49 event pairs, 0 based on Foata normal form. 2/24 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2020-10-16 05:12:22,825 INFO L132 encePairwiseOnDemand]: 111/115 looper letters, 1 selfloop transitions, 3 changer transitions 1/18 dead transitions. [2020-10-16 05:12:22,825 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 18 transitions, 63 flow [2020-10-16 05:12:22,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:12:22,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:12:22,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2020-10-16 05:12:22,829 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8065217391304348 [2020-10-16 05:12:22,830 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2020-10-16 05:12:22,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2020-10-16 05:12:22,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:22,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2020-10-16 05:12:22,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:12:22,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:12:22,834 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:12:22,835 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states and 371 transitions. [2020-10-16 05:12:22,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 18 transitions, 63 flow [2020-10-16 05:12:22,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 57 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:12:22,836 INFO L241 Difference]: Finished difference. Result has 30 places, 17 transitions, 58 flow [2020-10-16 05:12:22,837 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=17} [2020-10-16 05:12:22,837 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2020-10-16 05:12:22,838 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 17 transitions, 58 flow [2020-10-16 05:12:22,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:12:22,838 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:22,838 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:22,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:12:22,839 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:22,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:22,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1681712399, now seen corresponding path program 1 times [2020-10-16 05:12:22,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:22,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721303197] [2020-10-16 05:12:22,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:22,917 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 05:12:22,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721303197] [2020-10-16 05:12:22,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:22,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:12:22,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069497279] [2020-10-16 05:12:22,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:12:22,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:22,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:12:22,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:12:22,921 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 115 [2020-10-16 05:12:22,922 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 17 transitions, 58 flow. Second operand 4 states. [2020-10-16 05:12:22,922 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:22,922 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 115 [2020-10-16 05:12:22,923 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:22,949 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2020-10-16 05:12:22,949 INFO L130 PetriNetUnfolder]: For 18/21 co-relation queries the response was YES. [2020-10-16 05:12:22,950 INFO L80 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 25 events. 0/25 cut-off events. For 18/21 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 2/26 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2020-10-16 05:12:22,950 INFO L132 encePairwiseOnDemand]: 111/115 looper letters, 1 selfloop transitions, 3 changer transitions 1/18 dead transitions. [2020-10-16 05:12:22,950 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 18 transitions, 70 flow [2020-10-16 05:12:22,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:12:22,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:12:22,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2020-10-16 05:12:22,953 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8065217391304348 [2020-10-16 05:12:22,953 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2020-10-16 05:12:22,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2020-10-16 05:12:22,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:22,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2020-10-16 05:12:22,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:12:22,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:12:22,957 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:12:22,957 INFO L185 Difference]: Start difference. First operand has 30 places, 17 transitions, 58 flow. Second operand 4 states and 371 transitions. [2020-10-16 05:12:22,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 18 transitions, 70 flow [2020-10-16 05:12:22,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 18 transitions, 58 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 05:12:22,959 INFO L241 Difference]: Finished difference. Result has 31 places, 17 transitions, 60 flow [2020-10-16 05:12:22,959 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=60, PETRI_PLACES=31, PETRI_TRANSITIONS=17} [2020-10-16 05:12:22,959 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2020-10-16 05:12:22,960 INFO L481 AbstractCegarLoop]: Abstraction has has 31 places, 17 transitions, 60 flow [2020-10-16 05:12:22,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:12:22,960 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:22,960 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:22,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:12:22,961 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:22,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:22,961 INFO L82 PathProgramCache]: Analyzing trace with hash 131235208, now seen corresponding path program 1 times [2020-10-16 05:12:22,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:22,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267925196] [2020-10-16 05:12:22,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:23,026 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 05:12:23,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267925196] [2020-10-16 05:12:23,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:23,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:12:23,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234076594] [2020-10-16 05:12:23,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:12:23,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:23,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:12:23,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:12:23,030 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 115 [2020-10-16 05:12:23,031 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 17 transitions, 60 flow. Second operand 4 states. [2020-10-16 05:12:23,031 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:23,031 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 115 [2020-10-16 05:12:23,031 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:23,047 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2020-10-16 05:12:23,048 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2020-10-16 05:12:23,048 INFO L80 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 16 events. 0/16 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 2/18 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2020-10-16 05:12:23,048 INFO L132 encePairwiseOnDemand]: 112/115 looper letters, 0 selfloop transitions, 0 changer transitions 16/16 dead transitions. [2020-10-16 05:12:23,048 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 16 transitions, 58 flow [2020-10-16 05:12:23,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:12:23,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:12:23,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 369 transitions. [2020-10-16 05:12:23,051 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8021739130434783 [2020-10-16 05:12:23,051 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 369 transitions. [2020-10-16 05:12:23,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 369 transitions. [2020-10-16 05:12:23,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:23,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 369 transitions. [2020-10-16 05:12:23,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:12:23,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:12:23,054 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:12:23,054 INFO L185 Difference]: Start difference. First operand has 31 places, 17 transitions, 60 flow. Second operand 4 states and 369 transitions. [2020-10-16 05:12:23,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 16 transitions, 58 flow [2020-10-16 05:12:23,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 16 transitions, 44 flow, removed 0 selfloop flow, removed 7 redundant places. [2020-10-16 05:12:23,055 INFO L241 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2020-10-16 05:12:23,055 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2020-10-16 05:12:23,056 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, -1 predicate places. [2020-10-16 05:12:23,056 INFO L481 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2020-10-16 05:12:23,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:12:23,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 05:12:23,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:12:23 BasicIcfg [2020-10-16 05:12:23,060 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:12:23,063 INFO L168 Benchmark]: Toolchain (without parser) took 3527.15 ms. Allocated memory was 252.7 MB in the beginning and 371.7 MB in the end (delta: 119.0 MB). Free memory was 207.8 MB in the beginning and 332.2 MB in the end (delta: -124.4 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:12:23,064 INFO L168 Benchmark]: CDTParser took 0.19 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 05:12:23,065 INFO L168 Benchmark]: CACSL2BoogieTranslator took 729.96 ms. Allocated memory was 252.7 MB in the beginning and 317.7 MB in the end (delta: 65.0 MB). Free memory was 207.8 MB in the beginning and 272.7 MB in the end (delta: -64.9 MB). Peak memory consumption was 33.4 MB. Max. memory is 14.2 GB. [2020-10-16 05:12:23,066 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.64 ms. Allocated memory is still 317.7 MB. Free memory was 272.7 MB in the beginning and 270.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:12:23,067 INFO L168 Benchmark]: Boogie Preprocessor took 28.01 ms. Allocated memory is still 317.7 MB. Free memory was 270.2 MB in the beginning and 267.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:12:23,068 INFO L168 Benchmark]: RCFGBuilder took 446.40 ms. Allocated memory is still 317.7 MB. Free memory was 267.7 MB in the beginning and 245.9 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 05:12:23,069 INFO L168 Benchmark]: TraceAbstraction took 2267.97 ms. Allocated memory was 317.7 MB in the beginning and 371.7 MB in the end (delta: 54.0 MB). Free memory was 245.9 MB in the beginning and 332.2 MB in the end (delta: -86.4 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:12:23,073 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 729.96 ms. Allocated memory was 252.7 MB in the beginning and 317.7 MB in the end (delta: 65.0 MB). Free memory was 207.8 MB in the beginning and 272.7 MB in the end (delta: -64.9 MB). Peak memory consumption was 33.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 49.64 ms. Allocated memory is still 317.7 MB. Free memory was 272.7 MB in the beginning and 270.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.01 ms. Allocated memory is still 317.7 MB. Free memory was 270.2 MB in the beginning and 267.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 446.40 ms. Allocated memory is still 317.7 MB. Free memory was 267.7 MB in the beginning and 245.9 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2267.97 ms. Allocated memory was 317.7 MB in the beginning and 371.7 MB in the end (delta: 54.0 MB). Free memory was 245.9 MB in the beginning and 332.2 MB in the end (delta: -86.4 MB). There was no memory consumed. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 648 VarBasedMoverChecksPositive, 43 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 100 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 66 PlacesBefore, 27 PlacesAfterwards, 57 TransitionsBefore, 18 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 44 TotalNumberOfCompositions, 1796 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, 70 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: 2.1s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 12 SDtfs, 3 SDslu, 2 SDs, 0 SdLazy, 14 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred 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, 0.2s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 1071 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...