/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-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-ext/16_peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 03:23:12,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 03:23:12,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 03:23:12,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 03:23:12,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 03:23:12,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 03:23:12,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 03:23:12,526 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 03:23:12,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 03:23:12,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 03:23:12,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 03:23:12,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 03:23:12,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 03:23:12,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 03:23:12,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 03:23:12,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 03:23:12,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 03:23:12,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 03:23:12,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 03:23:12,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 03:23:12,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 03:23:12,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 03:23:12,546 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 03:23:12,546 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 03:23:12,549 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 03:23:12,549 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 03:23:12,549 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 03:23:12,550 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 03:23:12,550 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 03:23:12,551 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 03:23:12,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 03:23:12,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 03:23:12,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 03:23:12,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 03:23:12,555 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 03:23:12,555 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 03:23:12,556 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 03:23:12,556 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 03:23:12,556 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 03:23:12,557 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 03:23:12,558 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 03:23:12,559 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-NoLbe.epf [2020-04-18 03:23:12,575 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 03:23:12,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 03:23:12,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 03:23:12,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 03:23:12,578 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 03:23:12,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 03:23:12,579 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 03:23:12,579 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 03:23:12,579 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 03:23:12,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 03:23:12,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 03:23:12,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 03:23:12,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 03:23:12,580 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 03:23:12,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 03:23:12,580 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 03:23:12,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 03:23:12,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 03:23:12,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 03:23:12,582 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 03:23:12,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 03:23:12,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 03:23:12,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 03:23:12,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 03:23:12,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 03:23:12,583 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 03:23:12,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 03:23:12,584 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 03:23:12,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 03:23:12,584 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 03:23:12,889 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 03:23:12,912 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 03:23:12,916 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 03:23:12,918 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 03:23:12,918 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 03:23:12,919 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/16_peterson.i [2020-04-18 03:23:13,002 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f482b29b6/87d1c5dc1efa4a16896f8f6ef1198e75/FLAG09c970eed [2020-04-18 03:23:13,553 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 03:23:13,554 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/16_peterson.i [2020-04-18 03:23:13,574 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f482b29b6/87d1c5dc1efa4a16896f8f6ef1198e75/FLAG09c970eed [2020-04-18 03:23:13,840 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f482b29b6/87d1c5dc1efa4a16896f8f6ef1198e75 [2020-04-18 03:23:13,855 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 03:23:13,878 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 03:23:13,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 03:23:13,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 03:23:13,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 03:23:13,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:23:13" (1/1) ... [2020-04-18 03:23:13,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@507d08c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:23:13, skipping insertion in model container [2020-04-18 03:23:13,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:23:13" (1/1) ... [2020-04-18 03:23:13,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 03:23:13,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 03:23:14,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 03:23:14,598 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 03:23:14,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 03:23:14,752 INFO L208 MainTranslator]: Completed translation [2020-04-18 03:23:14,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:23:14 WrapperNode [2020-04-18 03:23:14,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 03:23:14,754 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 03:23:14,754 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 03:23:14,754 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 03:23:14,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:23:14" (1/1) ... [2020-04-18 03:23:14,790 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:23:14" (1/1) ... [2020-04-18 03:23:14,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 03:23:14,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 03:23:14,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 03:23:14,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 03:23:14,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:23:14" (1/1) ... [2020-04-18 03:23:14,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:23:14" (1/1) ... [2020-04-18 03:23:14,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:23:14" (1/1) ... [2020-04-18 03:23:14,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:23:14" (1/1) ... [2020-04-18 03:23:14,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:23:14" (1/1) ... [2020-04-18 03:23:14,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:23:14" (1/1) ... [2020-04-18 03:23:14,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:23:14" (1/1) ... [2020-04-18 03:23:14,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 03:23:14,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 03:23:14,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 03:23:14,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 03:23:14,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:23:14" (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 03:23:14,917 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-04-18 03:23:14,917 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-04-18 03:23:14,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 03:23:14,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 03:23:14,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 03:23:14,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 03:23:14,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 03:23:14,919 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 03:23:15,274 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 03:23:15,274 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 03:23:15,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:23:15 BoogieIcfgContainer [2020-04-18 03:23:15,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 03:23:15,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 03:23:15,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 03:23:15,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 03:23:15,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:23:13" (1/3) ... [2020-04-18 03:23:15,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3490556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:23:15, skipping insertion in model container [2020-04-18 03:23:15,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:23:14" (2/3) ... [2020-04-18 03:23:15,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3490556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:23:15, skipping insertion in model container [2020-04-18 03:23:15,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:23:15" (3/3) ... [2020-04-18 03:23:15,290 INFO L109 eAbstractionObserver]: Analyzing ICFG 16_peterson.i [2020-04-18 03:23:15,301 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 03:23:15,301 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 03:23:15,308 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-04-18 03:23:15,309 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 03:23:15,331 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:23:15,332 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:23:15,332 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:23:15,332 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:23:15,333 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:23:15,333 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:23:15,337 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:23:15,338 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:23:15,338 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:23:15,339 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:23:15,372 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 03:23:15,394 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 03:23:15,394 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 03:23:15,395 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 03:23:15,395 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 03:23:15,395 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 03:23:15,395 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 03:23:15,395 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 03:23:15,396 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 03:23:15,408 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 51 transitions, 107 flow [2020-04-18 03:23:15,436 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 276 states. [2020-04-18 03:23:15,439 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states. [2020-04-18 03:23:15,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 03:23:15,450 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:23:15,452 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:23:15,453 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:23:15,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:23:15,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1983207058, now seen corresponding path program 1 times [2020-04-18 03:23:15,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:23:15,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780582204] [2020-04-18 03:23:15,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:23:15,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:23:15,631 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 03:23:15,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780582204] [2020-04-18 03:23:15,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:23:15,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 03:23:15,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920072603] [2020-04-18 03:23:15,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 03:23:15,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:23:15,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 03:23:15,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 03:23:15,654 INFO L87 Difference]: Start difference. First operand 276 states. Second operand 2 states. [2020-04-18 03:23:15,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:23:15,682 INFO L93 Difference]: Finished difference Result 276 states and 540 transitions. [2020-04-18 03:23:15,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 03:23:15,684 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2020-04-18 03:23:15,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:23:15,699 INFO L225 Difference]: With dead ends: 276 [2020-04-18 03:23:15,699 INFO L226 Difference]: Without dead ends: 236 [2020-04-18 03:23:15,701 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 03:23:15,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-04-18 03:23:15,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2020-04-18 03:23:15,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-04-18 03:23:15,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 460 transitions. [2020-04-18 03:23:15,773 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 460 transitions. Word has length 19 [2020-04-18 03:23:15,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:23:15,774 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 460 transitions. [2020-04-18 03:23:15,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 03:23:15,774 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 460 transitions. [2020-04-18 03:23:15,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 03:23:15,778 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:23:15,779 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:23:15,779 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:23:15,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:23:15,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1983177267, now seen corresponding path program 1 times [2020-04-18 03:23:15,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:23:15,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277763662] [2020-04-18 03:23:15,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:23:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:23:15,876 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 03:23:15,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277763662] [2020-04-18 03:23:15,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:23:15,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:23:15,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367879273] [2020-04-18 03:23:15,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 03:23:15,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:23:15,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 03:23:15,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 03:23:15,885 INFO L87 Difference]: Start difference. First operand 236 states and 460 transitions. Second operand 3 states. [2020-04-18 03:23:15,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:23:15,920 INFO L93 Difference]: Finished difference Result 243 states and 453 transitions. [2020-04-18 03:23:15,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 03:23:15,921 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-04-18 03:23:15,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:23:15,924 INFO L225 Difference]: With dead ends: 243 [2020-04-18 03:23:15,924 INFO L226 Difference]: Without dead ends: 183 [2020-04-18 03:23:15,925 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 03:23:15,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-04-18 03:23:15,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 171. [2020-04-18 03:23:15,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-04-18 03:23:15,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 317 transitions. [2020-04-18 03:23:15,946 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 317 transitions. Word has length 19 [2020-04-18 03:23:15,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:23:15,946 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 317 transitions. [2020-04-18 03:23:15,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 03:23:15,946 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 317 transitions. [2020-04-18 03:23:15,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 03:23:15,948 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:23:15,948 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:23:15,949 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:23:15,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:23:15,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1840311886, now seen corresponding path program 1 times [2020-04-18 03:23:15,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:23:15,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424881933] [2020-04-18 03:23:15,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:23:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:23:16,021 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 03:23:16,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424881933] [2020-04-18 03:23:16,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:23:16,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:23:16,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359177574] [2020-04-18 03:23:16,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 03:23:16,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:23:16,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 03:23:16,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 03:23:16,027 INFO L87 Difference]: Start difference. First operand 171 states and 317 transitions. Second operand 3 states. [2020-04-18 03:23:16,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:23:16,061 INFO L93 Difference]: Finished difference Result 159 states and 285 transitions. [2020-04-18 03:23:16,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 03:23:16,062 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-04-18 03:23:16,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:23:16,063 INFO L225 Difference]: With dead ends: 159 [2020-04-18 03:23:16,064 INFO L226 Difference]: Without dead ends: 119 [2020-04-18 03:23:16,064 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 03:23:16,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-04-18 03:23:16,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2020-04-18 03:23:16,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-04-18 03:23:16,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 206 transitions. [2020-04-18 03:23:16,077 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 206 transitions. Word has length 23 [2020-04-18 03:23:16,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:23:16,078 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 206 transitions. [2020-04-18 03:23:16,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 03:23:16,078 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 206 transitions. [2020-04-18 03:23:16,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-04-18 03:23:16,080 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:23:16,080 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:23:16,080 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:23:16,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:23:16,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1244669700, now seen corresponding path program 1 times [2020-04-18 03:23:16,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:23:16,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582529065] [2020-04-18 03:23:16,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:23:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:23:16,176 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 03:23:16,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582529065] [2020-04-18 03:23:16,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:23:16,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 03:23:16,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97488078] [2020-04-18 03:23:16,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 03:23:16,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:23:16,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 03:23:16,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 03:23:16,181 INFO L87 Difference]: Start difference. First operand 119 states and 206 transitions. Second operand 4 states. [2020-04-18 03:23:16,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:23:16,238 INFO L93 Difference]: Finished difference Result 125 states and 217 transitions. [2020-04-18 03:23:16,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 03:23:16,239 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-04-18 03:23:16,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:23:16,240 INFO L225 Difference]: With dead ends: 125 [2020-04-18 03:23:16,240 INFO L226 Difference]: Without dead ends: 101 [2020-04-18 03:23:16,241 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 03:23:16,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-04-18 03:23:16,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-04-18 03:23:16,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-04-18 03:23:16,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 160 transitions. [2020-04-18 03:23:16,250 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 160 transitions. Word has length 28 [2020-04-18 03:23:16,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:23:16,250 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 160 transitions. [2020-04-18 03:23:16,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 03:23:16,250 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 160 transitions. [2020-04-18 03:23:16,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-04-18 03:23:16,252 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:23:16,252 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:23:16,252 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:23:16,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:23:16,253 INFO L82 PathProgramCache]: Analyzing trace with hash -2129920564, now seen corresponding path program 2 times [2020-04-18 03:23:16,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:23:16,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018208012] [2020-04-18 03:23:16,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:23:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:23:16,316 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 03:23:16,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018208012] [2020-04-18 03:23:16,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:23:16,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 03:23:16,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063235079] [2020-04-18 03:23:16,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 03:23:16,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:23:16,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 03:23:16,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 03:23:16,321 INFO L87 Difference]: Start difference. First operand 101 states and 160 transitions. Second operand 4 states. [2020-04-18 03:23:16,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:23:16,341 INFO L93 Difference]: Finished difference Result 48 states and 76 transitions. [2020-04-18 03:23:16,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 03:23:16,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-04-18 03:23:16,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:23:16,342 INFO L225 Difference]: With dead ends: 48 [2020-04-18 03:23:16,342 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 03:23:16,343 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 03:23:16,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 03:23:16,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 03:23:16,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 03:23:16,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 03:23:16,344 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2020-04-18 03:23:16,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:23:16,344 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 03:23:16,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 03:23:16,344 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 03:23:16,345 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 03:23:16,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:23:16 BasicIcfg [2020-04-18 03:23:16,351 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 03:23:16,354 INFO L168 Benchmark]: Toolchain (without parser) took 2496.32 ms. Allocated memory was 145.2 MB in the beginning and 237.0 MB in the end (delta: 91.8 MB). Free memory was 100.7 MB in the beginning and 191.1 MB in the end (delta: -90.4 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 03:23:16,354 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 145.2 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 03:23:16,356 INFO L168 Benchmark]: CACSL2BoogieTranslator took 874.64 ms. Allocated memory was 145.2 MB in the beginning and 205.0 MB in the end (delta: 59.8 MB). Free memory was 98.7 MB in the beginning and 164.7 MB in the end (delta: -66.0 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-04-18 03:23:16,357 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.83 ms. Allocated memory is still 205.0 MB. Free memory was 164.7 MB in the beginning and 162.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 03:23:16,357 INFO L168 Benchmark]: Boogie Preprocessor took 34.60 ms. Allocated memory is still 205.0 MB. Free memory was 162.7 MB in the beginning and 161.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 03:23:16,358 INFO L168 Benchmark]: RCFGBuilder took 425.30 ms. Allocated memory is still 205.0 MB. Free memory was 161.3 MB in the beginning and 142.6 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2020-04-18 03:23:16,359 INFO L168 Benchmark]: TraceAbstraction took 1071.21 ms. Allocated memory was 205.0 MB in the beginning and 237.0 MB in the end (delta: 32.0 MB). Free memory was 142.6 MB in the beginning and 191.1 MB in the end (delta: -48.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 03:23:16,364 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 145.2 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 874.64 ms. Allocated memory was 145.2 MB in the beginning and 205.0 MB in the end (delta: 59.8 MB). Free memory was 98.7 MB in the beginning and 164.7 MB in the end (delta: -66.0 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 63.83 ms. Allocated memory is still 205.0 MB. Free memory was 164.7 MB in the beginning and 162.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.60 ms. Allocated memory is still 205.0 MB. Free memory was 162.7 MB in the beginning and 161.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 425.30 ms. Allocated memory is still 205.0 MB. Free memory was 161.3 MB in the beginning and 142.6 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1071.21 ms. Allocated memory was 205.0 MB in the beginning and 237.0 MB in the end (delta: 32.0 MB). Free memory was 142.6 MB in the beginning and 191.1 MB in the end (delta: -48.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 681]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 690]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 46 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 240 SDtfs, 88 SDslu, 120 SDs, 0 SdLazy, 33 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=276occurred 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, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 3804 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...