/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-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe007_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:11:48,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:11:48,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:11:48,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:11:48,263 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:11:48,264 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:11:48,266 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:11:48,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:11:48,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:11:48,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:11:48,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:11:48,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:11:48,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:11:48,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:11:48,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:11:48,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:11:48,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:11:48,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:11:48,287 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:11:48,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:11:48,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:11:48,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:11:48,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:11:48,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:11:48,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:11:48,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:11:48,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:11:48,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:11:48,297 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:11:48,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:11:48,298 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:11:48,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:11:48,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:11:48,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:11:48,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:11:48,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:11:48,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:11:48,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:11:48,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:11:48,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:11:48,304 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:11:48,304 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-VariableLbe.epf [2020-04-18 02:11:48,329 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:11:48,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:11:48,331 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:11:48,332 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:11:48,333 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:11:48,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:11:48,333 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:11:48,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:11:48,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:11:48,334 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:11:48,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:11:48,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:11:48,335 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:11:48,335 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:11:48,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:11:48,336 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:11:48,336 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:11:48,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:11:48,337 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:11:48,337 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:11:48,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:11:48,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:11:48,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:11:48,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:11:48,338 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:11:48,338 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:11:48,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:11:48,338 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:11:48,339 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:11:48,339 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:11:48,637 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:11:48,648 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:11:48,651 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:11:48,652 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:11:48,653 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:11:48,654 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe007_tso.opt.i [2020-04-18 02:11:48,730 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8e14dfa3/186133d134c744b09f9021526dc75e78/FLAG1a3901842 [2020-04-18 02:11:49,290 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:11:49,291 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_tso.opt.i [2020-04-18 02:11:49,309 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8e14dfa3/186133d134c744b09f9021526dc75e78/FLAG1a3901842 [2020-04-18 02:11:49,587 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8e14dfa3/186133d134c744b09f9021526dc75e78 [2020-04-18 02:11:49,596 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:11:49,617 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:11:49,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:11:49,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:11:49,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:11:49,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:11:49" (1/1) ... [2020-04-18 02:11:49,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@503b5568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:11:49, skipping insertion in model container [2020-04-18 02:11:49,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:11:49" (1/1) ... [2020-04-18 02:11:49,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:11:49,689 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:11:50,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:11:50,224 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:11:50,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:11:50,371 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:11:50,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:11:50 WrapperNode [2020-04-18 02:11:50,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:11:50,373 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:11:50,373 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:11:50,373 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:11:50,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:11:50" (1/1) ... [2020-04-18 02:11:50,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:11:50" (1/1) ... [2020-04-18 02:11:50,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:11:50,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:11:50,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:11:50,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:11:50,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:11:50" (1/1) ... [2020-04-18 02:11:50,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:11:50" (1/1) ... [2020-04-18 02:11:50,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:11:50" (1/1) ... [2020-04-18 02:11:50,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:11:50" (1/1) ... [2020-04-18 02:11:50,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:11:50" (1/1) ... [2020-04-18 02:11:50,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:11:50" (1/1) ... [2020-04-18 02:11:50,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:11:50" (1/1) ... [2020-04-18 02:11:50,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:11:50,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:11:50,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:11:50,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:11:50,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:11:50" (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 [2020-04-18 02:11:50,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:11:50,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:11:50,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:11:50,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:11:50,519 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:11:50,519 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:11:50,519 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:11:50,520 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:11:50,520 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:11:50,520 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:11:50,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:11:50,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:11:50,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:11:50,522 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 02:11:50,921 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:11:50,921 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:11:50,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:11:50 BoogieIcfgContainer [2020-04-18 02:11:50,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:11:50,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:11:50,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:11:50,931 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:11:50,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:11:49" (1/3) ... [2020-04-18 02:11:50,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21f0e796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:11:50, skipping insertion in model container [2020-04-18 02:11:50,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:11:50" (2/3) ... [2020-04-18 02:11:50,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21f0e796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:11:50, skipping insertion in model container [2020-04-18 02:11:50,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:11:50" (3/3) ... [2020-04-18 02:11:50,934 INFO L109 eAbstractionObserver]: Analyzing ICFG safe007_tso.opt.i [2020-04-18 02:11:50,945 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:11:50,945 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:11:50,952 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:11:50,953 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:11:50,981 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:50,981 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:50,982 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:50,982 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:50,983 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:50,983 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:50,983 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:50,984 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:50,984 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:50,984 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:50,985 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:50,985 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:50,985 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:50,986 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:50,986 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:50,986 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:50,986 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:50,987 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:50,990 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:50,991 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:50,991 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:50,991 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:50,998 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:50,999 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:50,999 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:50,999 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:51,002 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:51,002 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:51,002 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:51,003 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:11:51,019 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:11:51,036 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:11:51,036 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:11:51,036 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:11:51,036 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:11:51,037 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:11:51,037 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:11:51,037 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:11:51,037 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:11:51,052 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-04-18 02:11:51,054 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 02:11:51,098 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 02:11:51,099 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:11:51,104 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. [2020-04-18 02:11:51,107 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 02:11:51,127 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 02:11:51,128 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:11:51,128 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. [2020-04-18 02:11:51,131 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 02:11:51,132 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:11:52,393 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-04-18 02:11:52,504 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2463 [2020-04-18 02:11:52,505 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-18 02:11:52,508 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-18 02:11:52,537 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-18 02:11:52,539 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-18 02:11:52,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:11:52,547 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:11:52,548 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:11:52,548 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:11:52,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:11:52,554 INFO L82 PathProgramCache]: Analyzing trace with hash -691335731, now seen corresponding path program 1 times [2020-04-18 02:11:52,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:11:52,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298203379] [2020-04-18 02:11:52,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:11:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:11:52,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:11:52,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298203379] [2020-04-18 02:11:52,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:11:52,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:11:52,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118469898] [2020-04-18 02:11:52,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 02:11:52,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:11:52,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 02:11:52,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 02:11:52,789 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-18 02:11:52,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:11:52,842 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-18 02:11:52,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 02:11:52,844 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-18 02:11:52,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:11:52,882 INFO L225 Difference]: With dead ends: 362 [2020-04-18 02:11:52,883 INFO L226 Difference]: Without dead ends: 298 [2020-04-18 02:11:52,884 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 [2020-04-18 02:11:52,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-18 02:11:52,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-18 02:11:52,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-18 02:11:52,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-18 02:11:52,972 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-18 02:11:52,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:11:52,973 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-18 02:11:52,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 02:11:52,974 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-18 02:11:52,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 02:11:52,976 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:11:52,976 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:11:52,977 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:11:52,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:11:52,977 INFO L82 PathProgramCache]: Analyzing trace with hash 43425274, now seen corresponding path program 1 times [2020-04-18 02:11:52,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:11:52,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124364294] [2020-04-18 02:11:52,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:11:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:11:53,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:11:53,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124364294] [2020-04-18 02:11:53,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:11:53,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:11:53,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767590872] [2020-04-18 02:11:53,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:11:53,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:11:53,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:11:53,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:11:53,146 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-04-18 02:11:53,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:11:53,184 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-04-18 02:11:53,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:11:53,184 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 02:11:53,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:11:53,186 INFO L225 Difference]: With dead ends: 330 [2020-04-18 02:11:53,187 INFO L226 Difference]: Without dead ends: 266 [2020-04-18 02:11:53,187 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 [2020-04-18 02:11:53,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-04-18 02:11:53,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-04-18 02:11:53,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-04-18 02:11:53,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-04-18 02:11:53,207 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-04-18 02:11:53,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:11:53,208 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-04-18 02:11:53,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:11:53,208 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-04-18 02:11:53,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:11:53,210 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:11:53,210 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:11:53,210 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:11:53,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:11:53,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1345064228, now seen corresponding path program 1 times [2020-04-18 02:11:53,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:11:53,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306160027] [2020-04-18 02:11:53,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:11:53,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:11:53,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:11:53,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306160027] [2020-04-18 02:11:53,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:11:53,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:11:53,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681382706] [2020-04-18 02:11:53,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:11:53,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:11:53,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:11:53,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:11:53,287 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 4 states. [2020-04-18 02:11:53,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:11:53,310 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2020-04-18 02:11:53,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:11:53,311 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 02:11:53,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:11:53,313 INFO L225 Difference]: With dead ends: 290 [2020-04-18 02:11:53,313 INFO L226 Difference]: Without dead ends: 242 [2020-04-18 02:11:53,314 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 [2020-04-18 02:11:53,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-04-18 02:11:53,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-04-18 02:11:53,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-04-18 02:11:53,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2020-04-18 02:11:53,327 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2020-04-18 02:11:53,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:11:53,327 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2020-04-18 02:11:53,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:11:53,327 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2020-04-18 02:11:53,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:11:53,329 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:11:53,329 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:11:53,329 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:11:53,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:11:53,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1654538757, now seen corresponding path program 1 times [2020-04-18 02:11:53,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:11:53,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398985918] [2020-04-18 02:11:53,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:11:53,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:11:53,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:11:53,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398985918] [2020-04-18 02:11:53,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:11:53,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:11:53,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760159910] [2020-04-18 02:11:53,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:11:53,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:11:53,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:11:53,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:11:53,415 INFO L87 Difference]: Start difference. First operand 242 states and 670 transitions. Second operand 5 states. [2020-04-18 02:11:53,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:11:53,479 INFO L93 Difference]: Finished difference Result 302 states and 815 transitions. [2020-04-18 02:11:53,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:11:53,480 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-04-18 02:11:53,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:11:53,482 INFO L225 Difference]: With dead ends: 302 [2020-04-18 02:11:53,482 INFO L226 Difference]: Without dead ends: 140 [2020-04-18 02:11:53,485 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 [2020-04-18 02:11:53,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-04-18 02:11:53,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-04-18 02:11:53,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-04-18 02:11:53,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 354 transitions. [2020-04-18 02:11:53,495 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 354 transitions. Word has length 11 [2020-04-18 02:11:53,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:11:53,496 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 354 transitions. [2020-04-18 02:11:53,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:11:53,496 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 354 transitions. [2020-04-18 02:11:53,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:11:53,497 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:11:53,497 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:11:53,497 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:11:53,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:11:53,498 INFO L82 PathProgramCache]: Analyzing trace with hash -234537171, now seen corresponding path program 1 times [2020-04-18 02:11:53,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:11:53,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881483122] [2020-04-18 02:11:53,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:11:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:11:53,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:11:53,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881483122] [2020-04-18 02:11:53,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:11:53,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:11:53,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142247607] [2020-04-18 02:11:53,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:11:53,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:11:53,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:11:53,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:11:53,598 INFO L87 Difference]: Start difference. First operand 140 states and 354 transitions. Second operand 5 states. [2020-04-18 02:11:53,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:11:53,643 INFO L93 Difference]: Finished difference Result 176 states and 428 transitions. [2020-04-18 02:11:53,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:11:53,644 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-18 02:11:53,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:11:53,645 INFO L225 Difference]: With dead ends: 176 [2020-04-18 02:11:53,645 INFO L226 Difference]: Without dead ends: 80 [2020-04-18 02:11:53,645 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 [2020-04-18 02:11:53,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-04-18 02:11:53,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-04-18 02:11:53,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-04-18 02:11:53,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2020-04-18 02:11:53,649 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 12 [2020-04-18 02:11:53,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:11:53,650 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2020-04-18 02:11:53,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:11:53,650 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2020-04-18 02:11:53,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:11:53,651 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:11:53,651 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:11:53,651 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:11:53,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:11:53,652 INFO L82 PathProgramCache]: Analyzing trace with hash -627503362, now seen corresponding path program 1 times [2020-04-18 02:11:53,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:11:53,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867794318] [2020-04-18 02:11:53,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:11:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:11:53,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:11:53,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867794318] [2020-04-18 02:11:53,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:11:53,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:11:53,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680662241] [2020-04-18 02:11:53,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:11:53,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:11:53,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:11:53,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:11:53,729 INFO L87 Difference]: Start difference. First operand 80 states and 176 transitions. Second operand 5 states. [2020-04-18 02:11:53,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:11:53,776 INFO L93 Difference]: Finished difference Result 68 states and 144 transitions. [2020-04-18 02:11:53,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:11:53,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-18 02:11:53,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:11:53,777 INFO L225 Difference]: With dead ends: 68 [2020-04-18 02:11:53,777 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:11:53,778 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 [2020-04-18 02:11:53,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:11:53,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:11:53,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:11:53,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:11:53,779 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-04-18 02:11:53,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:11:53,780 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:11:53,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:11:53,780 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:11:53,780 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:11:53,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:11:53 BasicIcfg [2020-04-18 02:11:53,784 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:11:53,786 INFO L168 Benchmark]: Toolchain (without parser) took 4188.78 ms. Allocated memory was 141.0 MB in the beginning and 244.3 MB in the end (delta: 103.3 MB). Free memory was 101.5 MB in the beginning and 104.9 MB in the end (delta: -3.5 MB). Peak memory consumption was 99.8 MB. Max. memory is 7.1 GB. [2020-04-18 02:11:53,787 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 02:11:53,788 INFO L168 Benchmark]: CACSL2BoogieTranslator took 753.66 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 99.4 MB in the beginning and 159.9 MB in the end (delta: -60.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-04-18 02:11:53,789 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.11 ms. Allocated memory is still 203.9 MB. Free memory was 159.9 MB in the beginning and 158.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:11:53,790 INFO L168 Benchmark]: Boogie Preprocessor took 27.87 ms. Allocated memory is still 203.9 MB. Free memory was 158.0 MB in the beginning and 156.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:11:53,790 INFO L168 Benchmark]: RCFGBuilder took 474.83 ms. Allocated memory is still 203.9 MB. Free memory was 156.1 MB in the beginning and 134.2 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:11:53,791 INFO L168 Benchmark]: TraceAbstraction took 2857.02 ms. Allocated memory was 203.9 MB in the beginning and 244.3 MB in the end (delta: 40.4 MB). Free memory was 133.5 MB in the beginning and 104.9 MB in the end (delta: 28.6 MB). Peak memory consumption was 69.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:11:53,797 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 753.66 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 99.4 MB in the beginning and 159.9 MB in the end (delta: -60.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.11 ms. Allocated memory is still 203.9 MB. Free memory was 159.9 MB in the beginning and 158.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.87 ms. Allocated memory is still 203.9 MB. Free memory was 158.0 MB in the beginning and 156.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 474.83 ms. Allocated memory is still 203.9 MB. Free memory was 156.1 MB in the beginning and 134.2 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2857.02 ms. Allocated memory was 203.9 MB in the beginning and 244.3 MB in the end (delta: 40.4 MB). Free memory was 133.5 MB in the beginning and 104.9 MB in the end (delta: 28.6 MB). Peak memory consumption was 69.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 79 ProgramPointsBefore, 32 ProgramPointsAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 668 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 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: 2.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 134 SDtfs, 142 SDslu, 167 SDs, 0 SdLazy, 40 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 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, 0.3s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 1705 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...