/usr/bin/java -Xmx8000000000 -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-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/thin001_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 22:38:14,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 22:38:14,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 22:38:14,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 22:38:14,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 22:38:14,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 22:38:14,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 22:38:14,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 22:38:14,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 22:38:14,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 22:38:14,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 22:38:14,223 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 22:38:14,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 22:38:14,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 22:38:14,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 22:38:14,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 22:38:14,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 22:38:14,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 22:38:14,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 22:38:14,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 22:38:14,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 22:38:14,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 22:38:14,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 22:38:14,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 22:38:14,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 22:38:14,251 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 22:38:14,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 22:38:14,256 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 22:38:14,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 22:38:14,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 22:38:14,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 22:38:14,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 22:38:14,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 22:38:14,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 22:38:14,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 22:38:14,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 22:38:14,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 22:38:14,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 22:38:14,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 22:38:14,268 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 22:38:14,269 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 22:38:14,270 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-FA-SemanticLbe.epf [2020-04-17 22:38:14,292 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 22:38:14,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 22:38:14,294 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 22:38:14,294 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 22:38:14,294 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 22:38:14,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 22:38:14,295 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 22:38:14,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 22:38:14,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 22:38:14,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 22:38:14,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 22:38:14,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 22:38:14,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 22:38:14,297 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 22:38:14,298 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 22:38:14,298 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 22:38:14,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 22:38:14,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 22:38:14,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 22:38:14,299 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 22:38:14,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 22:38:14,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:38:14,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 22:38:14,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 22:38:14,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 22:38:14,300 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 22:38:14,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 22:38:14,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 22:38:14,300 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 22:38:14,579 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 22:38:14,596 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 22:38:14,599 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 22:38:14,601 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 22:38:14,601 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 22:38:14,602 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin001_pso.opt.i [2020-04-17 22:38:14,666 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e4b819f9/2cc672eccd1848269ebe4e2f85649807/FLAG5e5fa303f [2020-04-17 22:38:15,176 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 22:38:15,177 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin001_pso.opt.i [2020-04-17 22:38:15,190 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e4b819f9/2cc672eccd1848269ebe4e2f85649807/FLAG5e5fa303f [2020-04-17 22:38:15,500 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e4b819f9/2cc672eccd1848269ebe4e2f85649807 [2020-04-17 22:38:15,508 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 22:38:15,529 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 22:38:15,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 22:38:15,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 22:38:15,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 22:38:15,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:38:15" (1/1) ... [2020-04-17 22:38:15,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1547709d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:38:15, skipping insertion in model container [2020-04-17 22:38:15,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:38:15" (1/1) ... [2020-04-17 22:38:15,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 22:38:15,588 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 22:38:16,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:38:16,049 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 22:38:16,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:38:16,215 INFO L208 MainTranslator]: Completed translation [2020-04-17 22:38:16,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:38:16 WrapperNode [2020-04-17 22:38:16,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 22:38:16,218 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 22:38:16,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 22:38:16,218 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 22:38:16,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:38:16" (1/1) ... [2020-04-17 22:38:16,255 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:38:16" (1/1) ... [2020-04-17 22:38:16,284 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 22:38:16,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 22:38:16,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 22:38:16,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 22:38:16,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:38:16" (1/1) ... [2020-04-17 22:38:16,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:38:16" (1/1) ... [2020-04-17 22:38:16,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:38:16" (1/1) ... [2020-04-17 22:38:16,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:38:16" (1/1) ... [2020-04-17 22:38:16,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:38:16" (1/1) ... [2020-04-17 22:38:16,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:38:16" (1/1) ... [2020-04-17 22:38:16,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:38:16" (1/1) ... [2020-04-17 22:38:16,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 22:38:16,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 22:38:16,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 22:38:16,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 22:38:16,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:38:16" (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 [2020-04-17 22:38:16,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 22:38:16,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 22:38:16,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 22:38:16,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 22:38:16,382 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 22:38:16,383 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 22:38:16,384 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 22:38:16,384 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 22:38:16,384 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 22:38:16,385 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 22:38:16,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 22:38:16,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 22:38:16,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 22:38:16,389 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 22:38:16,812 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 22:38:16,813 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 22:38:16,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:38:16 BoogieIcfgContainer [2020-04-17 22:38:16,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 22:38:16,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 22:38:16,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 22:38:16,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 22:38:16,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 10:38:15" (1/3) ... [2020-04-17 22:38:16,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31090819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:38:16, skipping insertion in model container [2020-04-17 22:38:16,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:38:16" (2/3) ... [2020-04-17 22:38:16,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31090819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:38:16, skipping insertion in model container [2020-04-17 22:38:16,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:38:16" (3/3) ... [2020-04-17 22:38:16,826 INFO L109 eAbstractionObserver]: Analyzing ICFG thin001_pso.opt.i [2020-04-17 22:38:16,836 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 22:38:16,836 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 22:38:16,843 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 22:38:16,844 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 22:38:16,869 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:16,869 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:16,869 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:16,870 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:16,870 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:16,871 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:16,871 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:16,871 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:16,872 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:16,872 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:16,872 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:16,873 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:16,873 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:16,873 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:16,874 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:16,874 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:16,874 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:16,874 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:16,879 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:16,879 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:16,879 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:16,880 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:16,887 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:16,887 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:16,887 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:16,888 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:16,890 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:16,891 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:16,891 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:16,891 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:38:16,909 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 22:38:16,928 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 22:38:16,929 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 22:38:16,929 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 22:38:16,929 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 22:38:16,929 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 22:38:16,929 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 22:38:16,930 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 22:38:16,930 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 22:38:16,947 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-04-17 22:38:16,949 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-17 22:38:16,994 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-17 22:38:16,994 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:38:17,000 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. [2020-04-17 22:38:17,003 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-17 22:38:17,024 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-17 22:38:17,025 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:38:17,025 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. [2020-04-17 22:38:17,028 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 22:38:17,029 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 22:38:18,565 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-04-17 22:38:18,675 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2463 [2020-04-17 22:38:18,676 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-17 22:38:18,679 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-17 22:38:18,706 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-17 22:38:18,709 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-17 22:38:18,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 22:38:18,717 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:38:18,718 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:38:18,718 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:38:18,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:38:18,724 INFO L82 PathProgramCache]: Analyzing trace with hash -691335731, now seen corresponding path program 1 times [2020-04-17 22:38:18,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:38:18,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737072452] [2020-04-17 22:38:18,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:38:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:38:18,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:38:18,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737072452] [2020-04-17 22:38:18,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:38:18,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:38:18,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703369842] [2020-04-17 22:38:18,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 22:38:18,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:38:18,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 22:38:18,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 22:38:18,917 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-17 22:38:18,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:38:18,952 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-17 22:38:18,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 22:38:18,953 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-17 22:38:18,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:38:18,971 INFO L225 Difference]: With dead ends: 362 [2020-04-17 22:38:18,971 INFO L226 Difference]: Without dead ends: 298 [2020-04-17 22:38:18,972 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 22:38:18,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-17 22:38:19,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-17 22:38:19,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-17 22:38:19,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-17 22:38:19,056 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-17 22:38:19,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:38:19,058 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-17 22:38:19,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 22:38:19,058 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-17 22:38:19,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 22:38:19,059 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:38:19,060 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:38:19,060 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:38:19,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:38:19,060 INFO L82 PathProgramCache]: Analyzing trace with hash 43425274, now seen corresponding path program 1 times [2020-04-17 22:38:19,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:38:19,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529280579] [2020-04-17 22:38:19,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:38:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:38:19,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:38:19,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529280579] [2020-04-17 22:38:19,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:38:19,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:38:19,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122526597] [2020-04-17 22:38:19,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:38:19,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:38:19,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:38:19,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:38:19,267 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-04-17 22:38:19,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:38:19,314 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-04-17 22:38:19,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:38:19,320 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 22:38:19,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:38:19,327 INFO L225 Difference]: With dead ends: 330 [2020-04-17 22:38:19,327 INFO L226 Difference]: Without dead ends: 266 [2020-04-17 22:38:19,328 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:38:19,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-04-17 22:38:19,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-04-17 22:38:19,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-04-17 22:38:19,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-04-17 22:38:19,377 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-04-17 22:38:19,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:38:19,377 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-04-17 22:38:19,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:38:19,378 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-04-17 22:38:19,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 22:38:19,379 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:38:19,380 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:38:19,380 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:38:19,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:38:19,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1226466257, now seen corresponding path program 1 times [2020-04-17 22:38:19,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:38:19,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228038645] [2020-04-17 22:38:19,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:38:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:38:19,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:38:19,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228038645] [2020-04-17 22:38:19,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:38:19,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:38:19,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228487727] [2020-04-17 22:38:19,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 22:38:19,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:38:19,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 22:38:19,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:38:19,481 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 6 states. [2020-04-17 22:38:19,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:38:19,614 INFO L93 Difference]: Finished difference Result 350 states and 940 transitions. [2020-04-17 22:38:19,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-17 22:38:19,615 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-04-17 22:38:19,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:38:19,617 INFO L225 Difference]: With dead ends: 350 [2020-04-17 22:38:19,617 INFO L226 Difference]: Without dead ends: 182 [2020-04-17 22:38:19,618 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-04-17 22:38:19,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-04-17 22:38:19,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-04-17 22:38:19,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-04-17 22:38:19,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 458 transitions. [2020-04-17 22:38:19,632 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 458 transitions. Word has length 10 [2020-04-17 22:38:19,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:38:19,633 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 458 transitions. [2020-04-17 22:38:19,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 22:38:19,633 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 458 transitions. [2020-04-17 22:38:19,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 22:38:19,634 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:38:19,634 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:38:19,635 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:38:19,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:38:19,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1670897012, now seen corresponding path program 1 times [2020-04-17 22:38:19,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:38:19,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449960633] [2020-04-17 22:38:19,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:38:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:38:19,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:38:19,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449960633] [2020-04-17 22:38:19,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:38:19,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:38:19,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605250137] [2020-04-17 22:38:19,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:38:19,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:38:19,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:38:19,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:38:19,713 INFO L87 Difference]: Start difference. First operand 182 states and 458 transitions. Second operand 4 states. [2020-04-17 22:38:19,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:38:19,743 INFO L93 Difference]: Finished difference Result 194 states and 472 transitions. [2020-04-17 22:38:19,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:38:19,744 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 22:38:19,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:38:19,746 INFO L225 Difference]: With dead ends: 194 [2020-04-17 22:38:19,746 INFO L226 Difference]: Without dead ends: 170 [2020-04-17 22:38:19,746 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:38:19,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-04-17 22:38:19,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-04-17 22:38:19,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-04-17 22:38:19,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 420 transitions. [2020-04-17 22:38:19,764 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 420 transitions. Word has length 12 [2020-04-17 22:38:19,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:38:19,764 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 420 transitions. [2020-04-17 22:38:19,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:38:19,764 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 420 transitions. [2020-04-17 22:38:19,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 22:38:19,766 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:38:19,766 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:38:19,766 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:38:19,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:38:19,767 INFO L82 PathProgramCache]: Analyzing trace with hash 257080554, now seen corresponding path program 1 times [2020-04-17 22:38:19,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:38:19,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154089690] [2020-04-17 22:38:19,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:38:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:38:19,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:38:19,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154089690] [2020-04-17 22:38:19,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:38:19,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:38:19,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908243628] [2020-04-17 22:38:19,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:38:19,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:38:19,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:38:19,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:38:19,853 INFO L87 Difference]: Start difference. First operand 170 states and 420 transitions. Second operand 5 states. [2020-04-17 22:38:19,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:38:19,900 INFO L93 Difference]: Finished difference Result 194 states and 469 transitions. [2020-04-17 22:38:19,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:38:19,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-17 22:38:19,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:38:19,902 INFO L225 Difference]: With dead ends: 194 [2020-04-17 22:38:19,902 INFO L226 Difference]: Without dead ends: 98 [2020-04-17 22:38:19,903 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 22:38:19,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-04-17 22:38:19,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-04-17 22:38:19,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-04-17 22:38:19,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 218 transitions. [2020-04-17 22:38:19,907 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 218 transitions. Word has length 13 [2020-04-17 22:38:19,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:38:19,907 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 218 transitions. [2020-04-17 22:38:19,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:38:19,908 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 218 transitions. [2020-04-17 22:38:19,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 22:38:19,909 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:38:19,909 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:38:19,909 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:38:19,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:38:19,909 INFO L82 PathProgramCache]: Analyzing trace with hash -647415272, now seen corresponding path program 1 times [2020-04-17 22:38:19,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:38:19,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845259143] [2020-04-17 22:38:19,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:38:19,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:38:19,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:38:19,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845259143] [2020-04-17 22:38:19,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:38:19,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:38:19,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069702778] [2020-04-17 22:38:19,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:38:19,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:38:19,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:38:19,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:38:19,983 INFO L87 Difference]: Start difference. First operand 98 states and 218 transitions. Second operand 5 states. [2020-04-17 22:38:20,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:38:20,022 INFO L93 Difference]: Finished difference Result 86 states and 186 transitions. [2020-04-17 22:38:20,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:38:20,022 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-17 22:38:20,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:38:20,023 INFO L225 Difference]: With dead ends: 86 [2020-04-17 22:38:20,023 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 22:38:20,023 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 22:38:20,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 22:38:20,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 22:38:20,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 22:38:20,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 22:38:20,024 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-04-17 22:38:20,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:38:20,025 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 22:38:20,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:38:20,025 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 22:38:20,025 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 22:38:20,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 10:38:20 BasicIcfg [2020-04-17 22:38:20,031 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 22:38:20,034 INFO L168 Benchmark]: Toolchain (without parser) took 4523.85 ms. Allocated memory was 146.3 MB in the beginning and 245.4 MB in the end (delta: 99.1 MB). Free memory was 102.4 MB in the beginning and 185.0 MB in the end (delta: -82.6 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2020-04-17 22:38:20,035 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 146.3 MB. Free memory is still 122.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-17 22:38:20,036 INFO L168 Benchmark]: CACSL2BoogieTranslator took 687.97 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 100.6 MB in the beginning and 158.9 MB in the end (delta: -58.2 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:38:20,037 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.06 ms. Allocated memory is still 203.9 MB. Free memory was 158.9 MB in the beginning and 156.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:38:20,038 INFO L168 Benchmark]: Boogie Preprocessor took 25.03 ms. Allocated memory is still 203.9 MB. Free memory was 156.9 MB in the beginning and 154.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-17 22:38:20,040 INFO L168 Benchmark]: RCFGBuilder took 507.67 ms. Allocated memory is still 203.9 MB. Free memory was 154.9 MB in the beginning and 133.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-04-17 22:38:20,040 INFO L168 Benchmark]: TraceAbstraction took 3212.75 ms. Allocated memory was 203.9 MB in the beginning and 245.4 MB in the end (delta: 41.4 MB). Free memory was 132.0 MB in the beginning and 185.0 MB in the end (delta: -53.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-17 22:38:20,044 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 146.3 MB. Free memory is still 122.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 687.97 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 100.6 MB in the beginning and 158.9 MB in the end (delta: -58.2 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 66.06 ms. Allocated memory is still 203.9 MB. Free memory was 158.9 MB in the beginning and 156.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.03 ms. Allocated memory is still 203.9 MB. Free memory was 156.9 MB in the beginning and 154.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 507.67 ms. Allocated memory is still 203.9 MB. Free memory was 154.9 MB in the beginning and 133.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3212.75 ms. Allocated memory was 203.9 MB in the beginning and 245.4 MB in the end (delta: 41.4 MB). Free memory was 132.0 MB in the beginning and 185.0 MB in the end (delta: -53.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 79 ProgramPointsBefore, 32 ProgramPointsAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 688 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2463 CheckedPairsTotal, 57 TotalNumberOfCompositions - 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. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 127 SDtfs, 160 SDslu, 180 SDs, 0 SdLazy, 68 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 2100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...