/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread-ext/20_lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 23:17:00,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 23:17:00,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 23:17:00,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 23:17:00,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 23:17:00,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 23:17:00,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 23:17:00,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 23:17:00,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 23:17:00,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 23:17:00,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 23:17:00,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 23:17:00,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 23:17:00,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 23:17:00,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 23:17:00,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 23:17:00,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 23:17:00,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 23:17:00,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 23:17:00,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 23:17:00,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 23:17:00,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 23:17:00,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 23:17:00,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 23:17:00,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-05 23:17:00,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-05 23:17:00,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-05 23:17:00,354 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-05 23:17:00,354 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-05 23:17:00,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-05 23:17:00,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-05 23:17:00,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-05 23:17:00,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-05 23:17:00,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 23:17:00,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 23:17:00,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 23:17:00,364 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-05 23:17:00,397 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 23:17:00,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 23:17:00,399 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 23:17:00,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 23:17:00,399 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 23:17:00,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 23:17:00,400 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 23:17:00,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 23:17:00,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 23:17:00,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 23:17:00,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 23:17:00,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 23:17:00,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 23:17:00,403 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 23:17:00,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 23:17:00,403 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 23:17:00,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 23:17:00,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 23:17:00,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 23:17:00,404 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 23:17:00,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 23:17:00,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 23:17:00,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 23:17:00,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-05 23:17:00,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 23:17:00,405 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 23:17:00,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 23:17:00,405 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-05 23:17:00,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 23:17:00,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 23:17:00,723 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 23:17:00,727 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 23:17:00,729 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 23:17:00,729 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 23:17:00,730 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/20_lamport.i [2020-10-05 23:17:00,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0cfa2d7c/f78690d26f854cd19014598cbd6f89cd/FLAG1a63bb6ed [2020-10-05 23:17:01,355 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 23:17:01,356 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/20_lamport.i [2020-10-05 23:17:01,370 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0cfa2d7c/f78690d26f854cd19014598cbd6f89cd/FLAG1a63bb6ed [2020-10-05 23:17:01,630 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0cfa2d7c/f78690d26f854cd19014598cbd6f89cd [2020-10-05 23:17:01,639 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 23:17:01,640 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 23:17:01,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 23:17:01,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 23:17:01,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 23:17:01,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:17:01" (1/1) ... [2020-10-05 23:17:01,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49f0cf70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:01, skipping insertion in model container [2020-10-05 23:17:01,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:17:01" (1/1) ... [2020-10-05 23:17:01,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 23:17:01,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 23:17:02,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:17:02,271 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 23:17:02,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:17:02,424 INFO L208 MainTranslator]: Completed translation [2020-10-05 23:17:02,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:02 WrapperNode [2020-10-05 23:17:02,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 23:17:02,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 23:17:02,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 23:17:02,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 23:17:02,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:02" (1/1) ... [2020-10-05 23:17:02,451 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:02" (1/1) ... [2020-10-05 23:17:02,476 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 23:17:02,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 23:17:02,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 23:17:02,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 23:17:02,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:02" (1/1) ... [2020-10-05 23:17:02,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:02" (1/1) ... [2020-10-05 23:17:02,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:02" (1/1) ... [2020-10-05 23:17:02,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:02" (1/1) ... [2020-10-05 23:17:02,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:02" (1/1) ... [2020-10-05 23:17:02,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:02" (1/1) ... [2020-10-05 23:17:02,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:02" (1/1) ... [2020-10-05 23:17:02,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 23:17:02,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 23:17:02,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 23:17:02,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 23:17:02,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 23:17:02,586 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-05 23:17:02,586 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-05 23:17:02,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 23:17:02,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 23:17:02,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 23:17:02,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 23:17:02,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 23:17:02,590 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-05 23:17:02,932 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 23:17:02,933 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-05 23:17:02,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:17:02 BoogieIcfgContainer [2020-10-05 23:17:02,935 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 23:17:02,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 23:17:02,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 23:17:02,940 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 23:17:02,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 11:17:01" (1/3) ... [2020-10-05 23:17:02,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5112cdfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:17:02, skipping insertion in model container [2020-10-05 23:17:02,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:02" (2/3) ... [2020-10-05 23:17:02,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5112cdfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:17:02, skipping insertion in model container [2020-10-05 23:17:02,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:17:02" (3/3) ... [2020-10-05 23:17:02,944 INFO L109 eAbstractionObserver]: Analyzing ICFG 20_lamport.i [2020-10-05 23:17:02,957 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 23:17:02,957 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-05 23:17:02,969 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-05 23:17:02,970 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 23:17:03,002 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:03,003 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:03,003 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:03,004 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:03,006 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:03,006 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:03,010 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:03,011 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:03,011 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:03,011 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:03,031 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-05 23:17:03,054 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:17:03,054 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:17:03,054 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:17:03,055 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:17:03,055 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:17:03,055 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:17:03,055 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:17:03,055 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:17:03,073 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 92 transitions, 189 flow [2020-10-05 23:17:03,075 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 72 places, 92 transitions, 189 flow [2020-10-05 23:17:03,123 INFO L129 PetriNetUnfolder]: 24/91 cut-off events. [2020-10-05 23:17:03,123 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 23:17:03,132 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 91 events. 24/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 162 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 78. Up to 5 conditions per place. [2020-10-05 23:17:03,137 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 72 places, 92 transitions, 189 flow [2020-10-05 23:17:03,162 INFO L129 PetriNetUnfolder]: 24/91 cut-off events. [2020-10-05 23:17:03,162 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 23:17:03,164 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 91 events. 24/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 162 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 78. Up to 5 conditions per place. [2020-10-05 23:17:03,168 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2992 [2020-10-05 23:17:03,169 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:17:03,953 INFO L206 etLargeBlockEncoding]: Checked pairs total: 10306 [2020-10-05 23:17:03,954 INFO L214 etLargeBlockEncoding]: Total number of compositions: 40 [2020-10-05 23:17:03,957 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 53 transitions, 111 flow [2020-10-05 23:17:03,980 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 326 states. [2020-10-05 23:17:03,983 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states. [2020-10-05 23:17:03,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-05 23:17:03,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:17:03,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-05 23:17:03,991 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:17:03,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:17:03,997 INFO L82 PathProgramCache]: Analyzing trace with hash 12205615, now seen corresponding path program 1 times [2020-10-05 23:17:04,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:17:04,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458475943] [2020-10-05 23:17:04,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:17:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:17:04,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:17:04,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458475943] [2020-10-05 23:17:04,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:17:04,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:17:04,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539966728] [2020-10-05 23:17:04,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-05 23:17:04,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:17:04,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-05 23:17:04,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-05 23:17:04,187 INFO L87 Difference]: Start difference. First operand 326 states. Second operand 2 states. [2020-10-05 23:17:04,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:17:04,221 INFO L93 Difference]: Finished difference Result 326 states and 830 transitions. [2020-10-05 23:17:04,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-05 23:17:04,223 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-10-05 23:17:04,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:17:04,240 INFO L225 Difference]: With dead ends: 326 [2020-10-05 23:17:04,241 INFO L226 Difference]: Without dead ends: 317 [2020-10-05 23:17:04,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-05 23:17:04,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-10-05 23:17:04,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2020-10-05 23:17:04,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-10-05 23:17:04,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 812 transitions. [2020-10-05 23:17:04,313 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 812 transitions. Word has length 4 [2020-10-05 23:17:04,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:17:04,314 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 812 transitions. [2020-10-05 23:17:04,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-05 23:17:04,314 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 812 transitions. [2020-10-05 23:17:04,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 23:17:04,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:17:04,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:17:04,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 23:17:04,317 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:17:04,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:17:04,317 INFO L82 PathProgramCache]: Analyzing trace with hash -295132035, now seen corresponding path program 1 times [2020-10-05 23:17:04,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:17:04,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014190257] [2020-10-05 23:17:04,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:17:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:17:04,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:17:04,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014190257] [2020-10-05 23:17:04,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:17:04,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:17:04,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742314777] [2020-10-05 23:17:04,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:17:04,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:17:04,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:17:04,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:17:04,388 INFO L87 Difference]: Start difference. First operand 317 states and 812 transitions. Second operand 3 states. [2020-10-05 23:17:04,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:17:04,419 INFO L93 Difference]: Finished difference Result 315 states and 792 transitions. [2020-10-05 23:17:04,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:17:04,420 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-05 23:17:04,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:17:04,423 INFO L225 Difference]: With dead ends: 315 [2020-10-05 23:17:04,423 INFO L226 Difference]: Without dead ends: 273 [2020-10-05 23:17:04,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:17:04,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-05 23:17:04,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 267. [2020-10-05 23:17:04,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-10-05 23:17:04,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 687 transitions. [2020-10-05 23:17:04,458 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 687 transitions. Word has length 10 [2020-10-05 23:17:04,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:17:04,459 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 687 transitions. [2020-10-05 23:17:04,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:17:04,459 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 687 transitions. [2020-10-05 23:17:04,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 23:17:04,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:17:04,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:17:04,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 23:17:04,467 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:17:04,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:17:04,467 INFO L82 PathProgramCache]: Analyzing trace with hash -819868373, now seen corresponding path program 1 times [2020-10-05 23:17:04,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:17:04,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61838279] [2020-10-05 23:17:04,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:17:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:17:04,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:17:04,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61838279] [2020-10-05 23:17:04,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:17:04,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:17:04,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209709838] [2020-10-05 23:17:04,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:17:04,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:17:04,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:17:04,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:17:04,515 INFO L87 Difference]: Start difference. First operand 267 states and 687 transitions. Second operand 3 states. [2020-10-05 23:17:04,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:17:04,537 INFO L93 Difference]: Finished difference Result 255 states and 652 transitions. [2020-10-05 23:17:04,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:17:04,538 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-05 23:17:04,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:17:04,540 INFO L225 Difference]: With dead ends: 255 [2020-10-05 23:17:04,540 INFO L226 Difference]: Without dead ends: 213 [2020-10-05 23:17:04,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:17:04,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-05 23:17:04,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2020-10-05 23:17:04,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-05 23:17:04,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 554 transitions. [2020-10-05 23:17:04,554 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 554 transitions. Word has length 10 [2020-10-05 23:17:04,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:17:04,555 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 554 transitions. [2020-10-05 23:17:04,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:17:04,555 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 554 transitions. [2020-10-05 23:17:04,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-05 23:17:04,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:17:04,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:17:04,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-05 23:17:04,560 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:17:04,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:17:04,561 INFO L82 PathProgramCache]: Analyzing trace with hash 839349889, now seen corresponding path program 1 times [2020-10-05 23:17:04,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:17:04,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398033594] [2020-10-05 23:17:04,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:17:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:17:04,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:17:04,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398033594] [2020-10-05 23:17:04,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:17:04,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:17:04,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995307896] [2020-10-05 23:17:04,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:17:04,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:17:04,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:17:04,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:17:04,609 INFO L87 Difference]: Start difference. First operand 213 states and 554 transitions. Second operand 3 states. [2020-10-05 23:17:04,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:17:04,668 INFO L93 Difference]: Finished difference Result 311 states and 780 transitions. [2020-10-05 23:17:04,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:17:04,669 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-05 23:17:04,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:17:04,671 INFO L225 Difference]: With dead ends: 311 [2020-10-05 23:17:04,672 INFO L226 Difference]: Without dead ends: 238 [2020-10-05 23:17:04,672 INFO L675 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 [2020-10-05 23:17:04,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-05 23:17:04,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 225. [2020-10-05 23:17:04,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-10-05 23:17:04,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 560 transitions. [2020-10-05 23:17:04,684 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 560 transitions. Word has length 17 [2020-10-05 23:17:04,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:17:04,685 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 560 transitions. [2020-10-05 23:17:04,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:17:04,686 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 560 transitions. [2020-10-05 23:17:04,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-05 23:17:04,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:17:04,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:17:04,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-05 23:17:04,689 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:17:04,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:17:04,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1816049141, now seen corresponding path program 2 times [2020-10-05 23:17:04,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:17:04,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298107869] [2020-10-05 23:17:04,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:17:04,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:17:04,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:17:04,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298107869] [2020-10-05 23:17:04,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:17:04,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:17:04,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501921914] [2020-10-05 23:17:04,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:17:04,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:17:04,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:17:04,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:17:04,760 INFO L87 Difference]: Start difference. First operand 225 states and 560 transitions. Second operand 3 states. [2020-10-05 23:17:04,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:17:04,788 INFO L93 Difference]: Finished difference Result 410 states and 994 transitions. [2020-10-05 23:17:04,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:17:04,788 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-05 23:17:04,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:17:04,792 INFO L225 Difference]: With dead ends: 410 [2020-10-05 23:17:04,792 INFO L226 Difference]: Without dead ends: 404 [2020-10-05 23:17:04,792 INFO L675 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 [2020-10-05 23:17:04,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2020-10-05 23:17:04,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 259. [2020-10-05 23:17:04,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-05 23:17:04,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 642 transitions. [2020-10-05 23:17:04,804 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 642 transitions. Word has length 17 [2020-10-05 23:17:04,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:17:04,805 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 642 transitions. [2020-10-05 23:17:04,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:17:04,805 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 642 transitions. [2020-10-05 23:17:04,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-05 23:17:04,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:17:04,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:17:04,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-05 23:17:04,807 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:17:04,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:17:04,807 INFO L82 PathProgramCache]: Analyzing trace with hash 360564935, now seen corresponding path program 1 times [2020-10-05 23:17:04,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:17:04,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981480772] [2020-10-05 23:17:04,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:17:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:17:04,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:17:04,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981480772] [2020-10-05 23:17:04,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:17:04,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:17:04,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519097387] [2020-10-05 23:17:04,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:17:04,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:17:04,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:17:04,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:17:04,849 INFO L87 Difference]: Start difference. First operand 259 states and 642 transitions. Second operand 3 states. [2020-10-05 23:17:04,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:17:04,882 INFO L93 Difference]: Finished difference Result 214 states and 462 transitions. [2020-10-05 23:17:04,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:17:04,883 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-05 23:17:04,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:17:04,884 INFO L225 Difference]: With dead ends: 214 [2020-10-05 23:17:04,884 INFO L226 Difference]: Without dead ends: 143 [2020-10-05 23:17:04,885 INFO L675 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 [2020-10-05 23:17:04,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-05 23:17:04,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 124. [2020-10-05 23:17:04,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-05 23:17:04,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 243 transitions. [2020-10-05 23:17:04,890 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 243 transitions. Word has length 17 [2020-10-05 23:17:04,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:17:04,890 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 243 transitions. [2020-10-05 23:17:04,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:17:04,890 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 243 transitions. [2020-10-05 23:17:04,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-05 23:17:04,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:17:04,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:17:04,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-05 23:17:04,892 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:17:04,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:17:04,892 INFO L82 PathProgramCache]: Analyzing trace with hash 685760811, now seen corresponding path program 2 times [2020-10-05 23:17:04,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:17:04,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789698588] [2020-10-05 23:17:04,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:17:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:17:04,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:17:04,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789698588] [2020-10-05 23:17:04,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:17:04,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:17:04,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601229308] [2020-10-05 23:17:04,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:17:04,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:17:04,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:17:04,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:17:04,925 INFO L87 Difference]: Start difference. First operand 124 states and 243 transitions. Second operand 3 states. [2020-10-05 23:17:04,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:17:04,939 INFO L93 Difference]: Finished difference Result 189 states and 359 transitions. [2020-10-05 23:17:04,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:17:04,939 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-05 23:17:04,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:17:04,941 INFO L225 Difference]: With dead ends: 189 [2020-10-05 23:17:04,941 INFO L226 Difference]: Without dead ends: 186 [2020-10-05 23:17:04,942 INFO L675 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 [2020-10-05 23:17:04,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-05 23:17:04,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 125. [2020-10-05 23:17:04,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-05 23:17:04,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 238 transitions. [2020-10-05 23:17:04,947 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 238 transitions. Word has length 17 [2020-10-05 23:17:04,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:17:04,947 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 238 transitions. [2020-10-05 23:17:04,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:17:04,947 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 238 transitions. [2020-10-05 23:17:04,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-05 23:17:04,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:17:04,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:17:04,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-05 23:17:04,949 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:17:04,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:17:04,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1792170110, now seen corresponding path program 1 times [2020-10-05 23:17:04,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:17:04,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770439267] [2020-10-05 23:17:04,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:17:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:17:04,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:17:04,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770439267] [2020-10-05 23:17:04,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:17:04,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:17:04,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624488032] [2020-10-05 23:17:04,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:17:04,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:17:04,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:17:04,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:17:04,983 INFO L87 Difference]: Start difference. First operand 125 states and 238 transitions. Second operand 3 states. [2020-10-05 23:17:04,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:17:04,998 INFO L93 Difference]: Finished difference Result 125 states and 234 transitions. [2020-10-05 23:17:04,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:17:04,998 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-05 23:17:04,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:17:05,000 INFO L225 Difference]: With dead ends: 125 [2020-10-05 23:17:05,000 INFO L226 Difference]: Without dead ends: 111 [2020-10-05 23:17:05,000 INFO L675 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 [2020-10-05 23:17:05,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-05 23:17:05,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-10-05 23:17:05,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-05 23:17:05,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 210 transitions. [2020-10-05 23:17:05,005 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 210 transitions. Word has length 20 [2020-10-05 23:17:05,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:17:05,005 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 210 transitions. [2020-10-05 23:17:05,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:17:05,006 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 210 transitions. [2020-10-05 23:17:05,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-05 23:17:05,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:17:05,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:17:05,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-05 23:17:05,007 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:17:05,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:17:05,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1787104108, now seen corresponding path program 1 times [2020-10-05 23:17:05,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:17:05,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866055864] [2020-10-05 23:17:05,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:17:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:17:05,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:17:05,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866055864] [2020-10-05 23:17:05,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:17:05,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:17:05,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544950155] [2020-10-05 23:17:05,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:17:05,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:17:05,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:17:05,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:17:05,041 INFO L87 Difference]: Start difference. First operand 111 states and 210 transitions. Second operand 3 states. [2020-10-05 23:17:05,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:17:05,049 INFO L93 Difference]: Finished difference Result 73 states and 151 transitions. [2020-10-05 23:17:05,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:17:05,049 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-05 23:17:05,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:17:05,050 INFO L225 Difference]: With dead ends: 73 [2020-10-05 23:17:05,050 INFO L226 Difference]: Without dead ends: 0 [2020-10-05 23:17:05,051 INFO L675 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 [2020-10-05 23:17:05,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-05 23:17:05,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-05 23:17:05,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-05 23:17:05,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-05 23:17:05,052 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-10-05 23:17:05,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:17:05,052 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-05 23:17:05,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:17:05,052 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-05 23:17:05,053 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-05 23:17:05,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-05 23:17:05,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 11:17:05 BasicIcfg [2020-10-05 23:17:05,058 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 23:17:05,061 INFO L168 Benchmark]: Toolchain (without parser) took 3419.23 ms. Allocated memory was 147.3 MB in the beginning and 245.9 MB in the end (delta: 98.6 MB). Free memory was 100.6 MB in the beginning and 165.5 MB in the end (delta: -64.9 MB). Peak memory consumption was 33.7 MB. Max. memory is 7.1 GB. [2020-10-05 23:17:05,062 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 147.3 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-05 23:17:05,063 INFO L168 Benchmark]: CACSL2BoogieTranslator took 782.12 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 100.4 MB in the beginning and 163.4 MB in the end (delta: -63.0 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-10-05 23:17:05,064 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.97 ms. Allocated memory is still 203.9 MB. Free memory was 163.4 MB in the beginning and 161.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-05 23:17:05,065 INFO L168 Benchmark]: Boogie Preprocessor took 33.65 ms. Allocated memory is still 203.9 MB. Free memory was 161.5 MB in the beginning and 160.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-05 23:17:05,065 INFO L168 Benchmark]: RCFGBuilder took 424.25 ms. Allocated memory is still 203.9 MB. Free memory was 160.2 MB in the beginning and 137.4 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-10-05 23:17:05,066 INFO L168 Benchmark]: TraceAbstraction took 2121.34 ms. Allocated memory was 203.9 MB in the beginning and 245.9 MB in the end (delta: 41.9 MB). Free memory was 136.7 MB in the beginning and 165.5 MB in the end (delta: -28.8 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-10-05 23:17:05,070 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 147.3 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 782.12 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 100.4 MB in the beginning and 163.4 MB in the end (delta: -63.0 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.97 ms. Allocated memory is still 203.9 MB. Free memory was 163.4 MB in the beginning and 161.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.65 ms. Allocated memory is still 203.9 MB. Free memory was 161.5 MB in the beginning and 160.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 424.25 ms. Allocated memory is still 203.9 MB. Free memory was 160.2 MB in the beginning and 137.4 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2121.34 ms. Allocated memory was 203.9 MB in the beginning and 245.9 MB in the end (delta: 41.9 MB). Free memory was 136.7 MB in the beginning and 165.5 MB in the end (delta: -28.8 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.8s, 72 ProgramPointsBefore, 41 ProgramPointsAfterwards, 92 TransitionsBefore, 53 TransitionsAfterwards, 2992 CoEnabledTransitionPairs, 6 FixpointIterations, 11 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 1160 VarBasedMoverChecksPositive, 48 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 10306 CheckedPairsTotal, 40 TotalNumberOfCompositions - PositiveResult [Line: 698]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 724]: 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, 69 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 492 SDtfs, 196 SDslu, 228 SDs, 0 SdLazy, 91 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=326occurred 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, 9 MinimizatonAttempts, 244 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 123 ConstructedInterpolants, 0 QuantifiedInterpolants, 3385 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...