/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-18 01:20:02,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-18 01:20:02,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-18 01:20:02,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-18 01:20:02,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-18 01:20:02,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-18 01:20:02,217 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-18 01:20:02,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-18 01:20:02,224 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-18 01:20:02,227 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-18 01:20:02,228 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-18 01:20:02,229 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-18 01:20:02,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-18 01:20:02,232 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-18 01:20:02,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-18 01:20:02,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-18 01:20:02,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-18 01:20:02,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-18 01:20:02,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-18 01:20:02,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-18 01:20:02,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-18 01:20:02,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-18 01:20:02,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-18 01:20:02,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-18 01:20:02,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-18 01:20:02,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-18 01:20:02,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-18 01:20:02,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-18 01:20:02,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-18 01:20:02,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-18 01:20:02,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-18 01:20:02,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-18 01:20:02,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-18 01:20:02,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-18 01:20:02,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-18 01:20:02,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-18 01:20:02,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-18 01:20:02,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-18 01:20:02,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-18 01:20:02,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-18 01:20:02,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-18 01:20:02,283 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-18 01:20:02,327 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-18 01:20:02,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-18 01:20:02,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-18 01:20:02,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-18 01:20:02,330 INFO L138 SettingsManager]: * Use SBE=true [2020-09-18 01:20:02,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-18 01:20:02,330 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-18 01:20:02,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-18 01:20:02,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-18 01:20:02,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-18 01:20:02,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-18 01:20:02,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-18 01:20:02,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-18 01:20:02,333 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-18 01:20:02,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-18 01:20:02,333 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-18 01:20:02,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-18 01:20:02,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-18 01:20:02,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-18 01:20:02,334 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-18 01:20:02,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-18 01:20:02,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 01:20:02,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-18 01:20:02,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-18 01:20:02,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-18 01:20:02,335 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-18 01:20:02,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-18 01:20:02,335 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-18 01:20:02,336 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-18 01:20:02,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-18 01:20:02,336 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-18 01:20:02,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-18 01:20:02,815 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-18 01:20:02,822 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-18 01:20:02,824 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-18 01:20:02,825 INFO L275 PluginConnector]: CDTParser initialized [2020-09-18 01:20:02,826 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i [2020-09-18 01:20:02,902 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef68c6f94/4c6add5743a3456d897c1f160e1cbbdf/FLAGf457e92d7 [2020-09-18 01:20:03,470 INFO L306 CDTParser]: Found 1 translation units. [2020-09-18 01:20:03,471 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i [2020-09-18 01:20:03,492 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef68c6f94/4c6add5743a3456d897c1f160e1cbbdf/FLAGf457e92d7 [2020-09-18 01:20:03,746 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef68c6f94/4c6add5743a3456d897c1f160e1cbbdf [2020-09-18 01:20:03,759 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-18 01:20:03,765 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-18 01:20:03,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-18 01:20:03,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-18 01:20:03,773 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-18 01:20:03,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 01:20:03" (1/1) ... [2020-09-18 01:20:03,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@297fc66d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:20:03, skipping insertion in model container [2020-09-18 01:20:03,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 01:20:03" (1/1) ... [2020-09-18 01:20:03,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-18 01:20:03,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-18 01:20:04,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 01:20:04,427 INFO L203 MainTranslator]: Completed pre-run [2020-09-18 01:20:04,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 01:20:04,590 INFO L208 MainTranslator]: Completed translation [2020-09-18 01:20:04,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:20:04 WrapperNode [2020-09-18 01:20:04,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-18 01:20:04,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-18 01:20:04,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-18 01:20:04,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-18 01:20:04,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:20:04" (1/1) ... [2020-09-18 01:20:04,632 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:20:04" (1/1) ... [2020-09-18 01:20:04,661 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-18 01:20:04,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-18 01:20:04,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-18 01:20:04,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-18 01:20:04,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:20:04" (1/1) ... [2020-09-18 01:20:04,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:20:04" (1/1) ... [2020-09-18 01:20:04,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:20:04" (1/1) ... [2020-09-18 01:20:04,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:20:04" (1/1) ... [2020-09-18 01:20:04,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:20:04" (1/1) ... [2020-09-18 01:20:04,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:20:04" (1/1) ... [2020-09-18 01:20:04,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:20:04" (1/1) ... [2020-09-18 01:20:04,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-18 01:20:04,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-18 01:20:04,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-18 01:20:04,699 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-18 01:20:04,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:20:04" (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 [2020-09-18 01:20:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-18 01:20:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-18 01:20:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-18 01:20:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-18 01:20:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-18 01:20:04,785 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-18 01:20:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-18 01:20:04,785 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-18 01:20:04,786 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-18 01:20:04,786 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-18 01:20:04,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-18 01:20:04,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-18 01:20:04,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-18 01:20:04,789 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-18 01:20:05,263 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-18 01:20:05,264 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-18 01:20:05,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 01:20:05 BoogieIcfgContainer [2020-09-18 01:20:05,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-18 01:20:05,270 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-18 01:20:05,270 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-18 01:20:05,274 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-18 01:20:05,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 01:20:03" (1/3) ... [2020-09-18 01:20:05,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@665a2b3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 01:20:05, skipping insertion in model container [2020-09-18 01:20:05,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:20:04" (2/3) ... [2020-09-18 01:20:05,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@665a2b3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 01:20:05, skipping insertion in model container [2020-09-18 01:20:05,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 01:20:05" (3/3) ... [2020-09-18 01:20:05,279 INFO L109 eAbstractionObserver]: Analyzing ICFG safe021_tso.oepc.i [2020-09-18 01:20:05,291 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-18 01:20:05,291 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-18 01:20:05,301 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-18 01:20:05,302 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-18 01:20:05,334 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:20:05,334 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:20:05,334 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:20:05,335 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:20:05,335 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:20:05,335 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:20:05,336 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:20:05,336 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:20:05,336 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:20:05,337 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:20:05,337 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:20:05,337 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:20:05,338 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:20:05,338 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:20:05,338 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:20:05,338 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:20:05,339 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:20:05,339 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:20:05,344 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:20:05,344 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:20:05,344 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:20:05,345 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:20:05,351 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:20:05,351 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:20:05,351 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:20:05,351 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:20:05,356 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:20:05,357 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:20:05,357 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:20:05,357 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:20:05,378 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-18 01:20:05,404 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-18 01:20:05,405 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-18 01:20:05,405 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-18 01:20:05,405 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-18 01:20:05,405 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-18 01:20:05,405 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-18 01:20:05,406 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-18 01:20:05,406 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-18 01:20:05,425 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-18 01:20:05,427 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-18 01:20:05,478 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-18 01:20:05,478 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 01:20:05,484 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-18 01:20:05,487 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-18 01:20:05,510 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-18 01:20:05,510 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 01:20:05,511 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-18 01:20:05,513 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-18 01:20:05,515 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-18 01:20:06,716 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-09-18 01:20:06,772 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2250 [2020-09-18 01:20:06,772 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2020-09-18 01:20:06,777 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-09-18 01:20:06,809 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-09-18 01:20:06,812 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-09-18 01:20:06,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-18 01:20:06,821 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 01:20:06,823 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 01:20:06,823 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 01:20:06,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 01:20:06,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1626400852, now seen corresponding path program 1 times [2020-09-18 01:20:06,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 01:20:06,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342893707] [2020-09-18 01:20:06,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 01:20:06,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 01:20:07,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 01:20:07,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342893707] [2020-09-18 01:20:07,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 01:20:07,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 01:20:07,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1513489144] [2020-09-18 01:20:07,062 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 01:20:07,066 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 01:20:07,083 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-18 01:20:07,083 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 01:20:07,085 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 01:20:07,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-18 01:20:07,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 01:20:07,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-18 01:20:07,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-18 01:20:07,107 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-09-18 01:20:07,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 01:20:07,139 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-09-18 01:20:07,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-18 01:20:07,141 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-09-18 01:20:07,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 01:20:07,160 INFO L225 Difference]: With dead ends: 362 [2020-09-18 01:20:07,160 INFO L226 Difference]: Without dead ends: 298 [2020-09-18 01:20:07,162 INFO L675 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 [2020-09-18 01:20:07,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-09-18 01:20:07,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-09-18 01:20:07,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-09-18 01:20:07,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-09-18 01:20:07,246 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-09-18 01:20:07,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 01:20:07,248 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-09-18 01:20:07,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-18 01:20:07,248 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-09-18 01:20:07,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-18 01:20:07,250 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 01:20:07,250 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 01:20:07,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-18 01:20:07,250 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 01:20:07,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 01:20:07,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1121187596, now seen corresponding path program 1 times [2020-09-18 01:20:07,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 01:20:07,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503027929] [2020-09-18 01:20:07,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 01:20:07,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 01:20:07,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 01:20:07,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503027929] [2020-09-18 01:20:07,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 01:20:07,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 01:20:07,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1890263752] [2020-09-18 01:20:07,437 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 01:20:07,438 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 01:20:07,440 INFO L274 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-09-18 01:20:07,440 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 01:20:07,440 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 01:20:07,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 01:20:07,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 01:20:07,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 01:20:07,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 01:20:07,443 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-09-18 01:20:07,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 01:20:07,480 INFO L93 Difference]: Finished difference Result 346 states and 956 transitions. [2020-09-18 01:20:07,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 01:20:07,481 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-18 01:20:07,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 01:20:07,485 INFO L225 Difference]: With dead ends: 346 [2020-09-18 01:20:07,485 INFO L226 Difference]: Without dead ends: 282 [2020-09-18 01:20:07,486 INFO L675 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 [2020-09-18 01:20:07,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-09-18 01:20:07,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-09-18 01:20:07,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-09-18 01:20:07,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 804 transitions. [2020-09-18 01:20:07,511 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 804 transitions. Word has length 9 [2020-09-18 01:20:07,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 01:20:07,512 INFO L479 AbstractCegarLoop]: Abstraction has 282 states and 804 transitions. [2020-09-18 01:20:07,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 01:20:07,512 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 804 transitions. [2020-09-18 01:20:07,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-18 01:20:07,514 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 01:20:07,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 01:20:07,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-18 01:20:07,514 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 01:20:07,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 01:20:07,515 INFO L82 PathProgramCache]: Analyzing trace with hash -485254353, now seen corresponding path program 1 times [2020-09-18 01:20:07,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 01:20:07,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579794405] [2020-09-18 01:20:07,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 01:20:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 01:20:07,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 01:20:07,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579794405] [2020-09-18 01:20:07,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 01:20:07,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 01:20:07,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1549013897] [2020-09-18 01:20:07,606 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 01:20:07,607 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 01:20:07,608 INFO L274 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-09-18 01:20:07,609 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 01:20:07,646 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 01:20:07,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 01:20:07,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 01:20:07,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 01:20:07,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 01:20:07,648 INFO L87 Difference]: Start difference. First operand 282 states and 804 transitions. Second operand 4 states. [2020-09-18 01:20:07,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 01:20:07,670 INFO L93 Difference]: Finished difference Result 310 states and 844 transitions. [2020-09-18 01:20:07,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 01:20:07,671 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-09-18 01:20:07,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 01:20:07,673 INFO L225 Difference]: With dead ends: 310 [2020-09-18 01:20:07,673 INFO L226 Difference]: Without dead ends: 254 [2020-09-18 01:20:07,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 01:20:07,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-09-18 01:20:07,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2020-09-18 01:20:07,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-09-18 01:20:07,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 708 transitions. [2020-09-18 01:20:07,690 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 708 transitions. Word has length 10 [2020-09-18 01:20:07,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 01:20:07,690 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 708 transitions. [2020-09-18 01:20:07,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 01:20:07,690 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 708 transitions. [2020-09-18 01:20:07,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-18 01:20:07,692 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 01:20:07,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 01:20:07,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-18 01:20:07,692 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 01:20:07,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 01:20:07,693 INFO L82 PathProgramCache]: Analyzing trace with hash 2136362745, now seen corresponding path program 1 times [2020-09-18 01:20:07,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 01:20:07,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032614664] [2020-09-18 01:20:07,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 01:20:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 01:20:07,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 01:20:07,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032614664] [2020-09-18 01:20:07,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 01:20:07,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 01:20:07,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1379888706] [2020-09-18 01:20:07,797 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 01:20:07,798 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 01:20:07,800 INFO L274 McrAutomatonBuilder]: Finished intersection with 18 states and 24 transitions. [2020-09-18 01:20:07,800 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 01:20:07,848 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 01:20:07,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-18 01:20:07,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 01:20:07,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-18 01:20:07,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-18 01:20:07,850 INFO L87 Difference]: Start difference. First operand 254 states and 708 transitions. Second operand 5 states. [2020-09-18 01:20:07,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 01:20:07,894 INFO L93 Difference]: Finished difference Result 308 states and 834 transitions. [2020-09-18 01:20:07,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-18 01:20:07,895 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-09-18 01:20:07,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 01:20:07,896 INFO L225 Difference]: With dead ends: 308 [2020-09-18 01:20:07,897 INFO L226 Difference]: Without dead ends: 170 [2020-09-18 01:20:07,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-18 01:20:07,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-09-18 01:20:07,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-09-18 01:20:07,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-09-18 01:20:07,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 432 transitions. [2020-09-18 01:20:07,905 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 432 transitions. Word has length 11 [2020-09-18 01:20:07,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 01:20:07,906 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 432 transitions. [2020-09-18 01:20:07,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-18 01:20:07,906 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 432 transitions. [2020-09-18 01:20:07,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-18 01:20:07,908 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 01:20:07,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 01:20:07,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-18 01:20:07,908 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 01:20:07,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 01:20:07,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1820296279, now seen corresponding path program 1 times [2020-09-18 01:20:07,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 01:20:07,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324850431] [2020-09-18 01:20:07,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 01:20:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 01:20:07,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 01:20:07,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324850431] [2020-09-18 01:20:07,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 01:20:07,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 01:20:07,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [651308701] [2020-09-18 01:20:07,976 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 01:20:07,977 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 01:20:07,979 INFO L274 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-09-18 01:20:07,980 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 01:20:08,025 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:20:08,050 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:20:08,069 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:20:08,082 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 01:20:08,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 01:20:08,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 01:20:08,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 01:20:08,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 01:20:08,083 INFO L87 Difference]: Start difference. First operand 170 states and 432 transitions. Second operand 4 states. [2020-09-18 01:20:08,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 01:20:08,111 INFO L93 Difference]: Finished difference Result 122 states and 292 transitions. [2020-09-18 01:20:08,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 01:20:08,112 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-18 01:20:08,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 01:20:08,113 INFO L225 Difference]: With dead ends: 122 [2020-09-18 01:20:08,113 INFO L226 Difference]: Without dead ends: 0 [2020-09-18 01:20:08,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 01:20:08,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-18 01:20:08,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-18 01:20:08,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-18 01:20:08,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-18 01:20:08,114 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-09-18 01:20:08,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 01:20:08,114 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-18 01:20:08,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 01:20:08,115 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-18 01:20:08,115 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-18 01:20:08,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-18 01:20:08,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 01:20:08 BasicIcfg [2020-09-18 01:20:08,120 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-18 01:20:08,122 INFO L168 Benchmark]: Toolchain (without parser) took 4361.00 ms. Allocated memory was 141.0 MB in the beginning and 244.3 MB in the end (delta: 103.3 MB). Free memory was 102.7 MB in the beginning and 103.2 MB in the end (delta: -549.0 kB). Peak memory consumption was 102.7 MB. Max. memory is 7.1 GB. [2020-09-18 01:20:08,123 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-18 01:20:08,124 INFO L168 Benchmark]: CACSL2BoogieTranslator took 823.78 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.0 MB in the beginning and 161.6 MB in the end (delta: -59.6 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-09-18 01:20:08,125 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.84 ms. Allocated memory is still 204.5 MB. Free memory was 161.6 MB in the beginning and 159.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-09-18 01:20:08,126 INFO L168 Benchmark]: Boogie Preprocessor took 34.27 ms. Allocated memory is still 204.5 MB. Free memory was 159.1 MB in the beginning and 157.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-18 01:20:08,127 INFO L168 Benchmark]: RCFGBuilder took 570.69 ms. Allocated memory is still 204.5 MB. Free memory was 157.8 MB in the beginning and 135.5 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-09-18 01:20:08,128 INFO L168 Benchmark]: TraceAbstraction took 2849.59 ms. Allocated memory was 204.5 MB in the beginning and 244.3 MB in the end (delta: 39.8 MB). Free memory was 134.8 MB in the beginning and 103.2 MB in the end (delta: 31.6 MB). Peak memory consumption was 71.5 MB. Max. memory is 7.1 GB. [2020-09-18 01:20:08,132 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 823.78 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.0 MB in the beginning and 161.6 MB in the end (delta: -59.6 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 67.84 ms. Allocated memory is still 204.5 MB. Free memory was 161.6 MB in the beginning and 159.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.27 ms. Allocated memory is still 204.5 MB. Free memory was 159.1 MB in the beginning and 157.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 570.69 ms. Allocated memory is still 204.5 MB. Free memory was 157.8 MB in the beginning and 135.5 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2849.59 ms. Allocated memory was 204.5 MB in the beginning and 244.3 MB in the end (delta: 39.8 MB). Free memory was 134.8 MB in the beginning and 103.2 MB in the end (delta: 31.6 MB). Peak memory consumption was 71.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 78 ProgramPointsBefore, 32 ProgramPointsAfterwards, 70 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 635 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2250 CheckedPairsTotal, 55 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 113 SDtfs, 96 SDslu, 137 SDs, 0 SdLazy, 42 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 1152 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...