/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-ext/20_lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 23:06:58,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 23:06:58,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 23:06:58,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 23:06:58,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 23:06:58,553 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 23:06:58,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 23:06:58,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 23:06:58,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 23:06:58,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 23:06:58,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 23:06:58,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 23:06:58,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 23:06:58,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 23:06:58,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 23:06:58,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 23:06:58,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 23:06:58,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 23:06:58,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 23:06:58,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 23:06:58,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 23:06:58,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 23:06:58,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 23:06:58,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 23:06:58,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 23:06:58,577 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 23:06:58,577 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 23:06:58,578 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 23:06:58,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 23:06:58,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 23:06:58,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 23:06:58,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 23:06:58,581 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 23:06:58,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 23:06:58,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 23:06:58,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 23:06:58,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 23:06:58,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 23:06:58,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 23:06:58,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 23:06:58,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 23:06:58,587 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf [2020-04-17 23:06:58,601 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 23:06:58,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 23:06:58,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 23:06:58,603 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 23:06:58,603 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 23:06:58,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 23:06:58,603 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 23:06:58,603 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 23:06:58,604 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 23:06:58,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 23:06:58,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 23:06:58,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 23:06:58,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 23:06:58,605 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 23:06:58,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 23:06:58,605 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 23:06:58,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 23:06:58,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 23:06:58,606 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 23:06:58,606 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 23:06:58,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 23:06:58,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 23:06:58,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 23:06:58,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 23:06:58,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 23:06:58,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 23:06:58,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 23:06:58,607 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-17 23:06:58,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 23:06:58,608 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 23:06:58,882 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 23:06:58,904 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 23:06:58,907 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 23:06:58,908 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 23:06:58,908 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 23:06:58,909 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/20_lamport.i [2020-04-17 23:06:58,972 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce47706dd/586c67c3252c4dba8fb9bda306b5414e/FLAG076f1b064 [2020-04-17 23:06:59,481 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 23:06:59,482 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/20_lamport.i [2020-04-17 23:06:59,496 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce47706dd/586c67c3252c4dba8fb9bda306b5414e/FLAG076f1b064 [2020-04-17 23:06:59,755 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce47706dd/586c67c3252c4dba8fb9bda306b5414e [2020-04-17 23:06:59,764 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 23:06:59,787 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 23:06:59,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 23:06:59,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 23:06:59,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 23:06:59,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 11:06:59" (1/1) ... [2020-04-17 23:06:59,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@455307b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:06:59, skipping insertion in model container [2020-04-17 23:06:59,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 11:06:59" (1/1) ... [2020-04-17 23:06:59,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 23:06:59,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 23:07:00,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 23:07:00,386 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 23:07:00,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 23:07:00,556 INFO L208 MainTranslator]: Completed translation [2020-04-17 23:07:00,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:07:00 WrapperNode [2020-04-17 23:07:00,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 23:07:00,557 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 23:07:00,558 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 23:07:00,558 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 23:07:00,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:07:00" (1/1) ... [2020-04-17 23:07:00,607 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:07:00" (1/1) ... [2020-04-17 23:07:00,631 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 23:07:00,631 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 23:07:00,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 23:07:00,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 23:07:00,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:07:00" (1/1) ... [2020-04-17 23:07:00,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:07:00" (1/1) ... [2020-04-17 23:07:00,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:07:00" (1/1) ... [2020-04-17 23:07:00,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:07:00" (1/1) ... [2020-04-17 23:07:00,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:07:00" (1/1) ... [2020-04-17 23:07:00,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:07:00" (1/1) ... [2020-04-17 23:07:00,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:07:00" (1/1) ... [2020-04-17 23:07:00,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 23:07:00,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 23:07:00,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 23:07:00,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 23:07:00,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:07:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 23:07:00,733 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-04-17 23:07:00,733 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-04-17 23:07:00,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 23:07:00,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 23:07:00,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 23:07:00,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 23:07:00,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 23:07:00,738 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 23:07:01,187 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 23:07:01,188 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-04-17 23:07:01,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 11:07:01 BoogieIcfgContainer [2020-04-17 23:07:01,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 23:07:01,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 23:07:01,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 23:07:01,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 23:07:01,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 11:06:59" (1/3) ... [2020-04-17 23:07:01,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7150c978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 11:07:01, skipping insertion in model container [2020-04-17 23:07:01,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:07:00" (2/3) ... [2020-04-17 23:07:01,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7150c978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 11:07:01, skipping insertion in model container [2020-04-17 23:07:01,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 11:07:01" (3/3) ... [2020-04-17 23:07:01,201 INFO L109 eAbstractionObserver]: Analyzing ICFG 20_lamport.i [2020-04-17 23:07:01,212 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 23:07:01,213 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 23:07:01,221 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-04-17 23:07:01,222 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 23:07:01,247 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:07:01,247 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:07:01,247 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:07:01,248 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:07:01,249 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:07:01,249 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:07:01,253 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:07:01,254 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:07:01,254 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:07:01,254 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:07:01,275 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 23:07:01,297 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 23:07:01,298 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 23:07:01,298 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 23:07:01,298 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 23:07:01,298 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 23:07:01,298 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 23:07:01,299 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 23:07:01,299 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 23:07:01,317 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 92 transitions, 189 flow [2020-04-17 23:07:01,319 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 72 places, 92 transitions, 189 flow [2020-04-17 23:07:01,367 INFO L129 PetriNetUnfolder]: 24/91 cut-off events. [2020-04-17 23:07:01,367 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 23:07:01,374 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. [2020-04-17 23:07:01,379 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 72 places, 92 transitions, 189 flow [2020-04-17 23:07:01,403 INFO L129 PetriNetUnfolder]: 24/91 cut-off events. [2020-04-17 23:07:01,403 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 23:07:01,405 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. [2020-04-17 23:07:01,409 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2992 [2020-04-17 23:07:01,410 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-17 23:07:02,284 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-04-17 23:07:02,369 INFO L206 etLargeBlockEncoding]: Checked pairs total: 10306 [2020-04-17 23:07:02,369 INFO L214 etLargeBlockEncoding]: Total number of compositions: 40 [2020-04-17 23:07:02,374 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 53 transitions, 111 flow [2020-04-17 23:07:02,412 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 326 states. [2020-04-17 23:07:02,414 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states. [2020-04-17 23:07:02,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-17 23:07:02,422 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:07:02,424 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-04-17 23:07:02,424 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:07:02,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:07:02,433 INFO L82 PathProgramCache]: Analyzing trace with hash 12205615, now seen corresponding path program 1 times [2020-04-17 23:07:02,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:07:02,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119263406] [2020-04-17 23:07:02,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:07:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:07:02,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:07:02,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119263406] [2020-04-17 23:07:02,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:07:02,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:07:02,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442942548] [2020-04-17 23:07:02,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 23:07:02,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:07:02,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 23:07:02,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 23:07:02,654 INFO L87 Difference]: Start difference. First operand 326 states. Second operand 2 states. [2020-04-17 23:07:02,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:07:02,710 INFO L93 Difference]: Finished difference Result 326 states and 830 transitions. [2020-04-17 23:07:02,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 23:07:02,712 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-04-17 23:07:02,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:07:02,759 INFO L225 Difference]: With dead ends: 326 [2020-04-17 23:07:02,759 INFO L226 Difference]: Without dead ends: 317 [2020-04-17 23:07:02,764 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 23:07:02,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-04-17 23:07:02,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2020-04-17 23:07:02,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-04-17 23:07:02,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 812 transitions. [2020-04-17 23:07:02,891 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 812 transitions. Word has length 4 [2020-04-17 23:07:02,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:07:02,891 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 812 transitions. [2020-04-17 23:07:02,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 23:07:02,892 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 812 transitions. [2020-04-17 23:07:02,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 23:07:02,894 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:07:02,894 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:07:02,895 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:07:02,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:07:02,895 INFO L82 PathProgramCache]: Analyzing trace with hash -295132035, now seen corresponding path program 1 times [2020-04-17 23:07:02,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:07:02,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577243835] [2020-04-17 23:07:02,896 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:07:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:07:03,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:07:03,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577243835] [2020-04-17 23:07:03,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:07:03,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:07:03,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856520431] [2020-04-17 23:07:03,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:07:03,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:07:03,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:07:03,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:07:03,012 INFO L87 Difference]: Start difference. First operand 317 states and 812 transitions. Second operand 3 states. [2020-04-17 23:07:03,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:07:03,061 INFO L93 Difference]: Finished difference Result 315 states and 792 transitions. [2020-04-17 23:07:03,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:07:03,061 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-17 23:07:03,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:07:03,064 INFO L225 Difference]: With dead ends: 315 [2020-04-17 23:07:03,064 INFO L226 Difference]: Without dead ends: 273 [2020-04-17 23:07:03,065 INFO L678 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 [2020-04-17 23:07:03,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-04-17 23:07:03,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 267. [2020-04-17 23:07:03,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-04-17 23:07:03,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 687 transitions. [2020-04-17 23:07:03,090 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 687 transitions. Word has length 10 [2020-04-17 23:07:03,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:07:03,091 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 687 transitions. [2020-04-17 23:07:03,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:07:03,095 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 687 transitions. [2020-04-17 23:07:03,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 23:07:03,097 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:07:03,102 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:07:03,102 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:07:03,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:07:03,104 INFO L82 PathProgramCache]: Analyzing trace with hash -819868373, now seen corresponding path program 1 times [2020-04-17 23:07:03,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:07:03,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408829870] [2020-04-17 23:07:03,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:07:03,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:07:03,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:07:03,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408829870] [2020-04-17 23:07:03,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:07:03,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:07:03,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173973198] [2020-04-17 23:07:03,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:07:03,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:07:03,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:07:03,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:07:03,165 INFO L87 Difference]: Start difference. First operand 267 states and 687 transitions. Second operand 3 states. [2020-04-17 23:07:03,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:07:03,190 INFO L93 Difference]: Finished difference Result 255 states and 652 transitions. [2020-04-17 23:07:03,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:07:03,191 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-17 23:07:03,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:07:03,194 INFO L225 Difference]: With dead ends: 255 [2020-04-17 23:07:03,194 INFO L226 Difference]: Without dead ends: 213 [2020-04-17 23:07:03,194 INFO L678 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 [2020-04-17 23:07:03,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-04-17 23:07:03,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2020-04-17 23:07:03,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-04-17 23:07:03,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 554 transitions. [2020-04-17 23:07:03,204 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 554 transitions. Word has length 10 [2020-04-17 23:07:03,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:07:03,204 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 554 transitions. [2020-04-17 23:07:03,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:07:03,205 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 554 transitions. [2020-04-17 23:07:03,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 23:07:03,207 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:07:03,207 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:07:03,208 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:07:03,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:07:03,208 INFO L82 PathProgramCache]: Analyzing trace with hash 839349889, now seen corresponding path program 1 times [2020-04-17 23:07:03,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:07:03,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73697561] [2020-04-17 23:07:03,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:07:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:07:03,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:07:03,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73697561] [2020-04-17 23:07:03,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:07:03,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 23:07:03,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019914003] [2020-04-17 23:07:03,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:07:03,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:07:03,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:07:03,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:07:03,263 INFO L87 Difference]: Start difference. First operand 213 states and 554 transitions. Second operand 3 states. [2020-04-17 23:07:03,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:07:03,344 INFO L93 Difference]: Finished difference Result 311 states and 780 transitions. [2020-04-17 23:07:03,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:07:03,345 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-04-17 23:07:03,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:07:03,347 INFO L225 Difference]: With dead ends: 311 [2020-04-17 23:07:03,347 INFO L226 Difference]: Without dead ends: 238 [2020-04-17 23:07:03,348 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 [2020-04-17 23:07:03,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-04-17 23:07:03,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 225. [2020-04-17 23:07:03,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-04-17 23:07:03,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 560 transitions. [2020-04-17 23:07:03,358 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 560 transitions. Word has length 17 [2020-04-17 23:07:03,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:07:03,359 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 560 transitions. [2020-04-17 23:07:03,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:07:03,360 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 560 transitions. [2020-04-17 23:07:03,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 23:07:03,361 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:07:03,362 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:07:03,362 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:07:03,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:07:03,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1816049141, now seen corresponding path program 2 times [2020-04-17 23:07:03,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:07:03,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159343837] [2020-04-17 23:07:03,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:07:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:07:03,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:07:03,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159343837] [2020-04-17 23:07:03,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:07:03,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 23:07:03,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688146442] [2020-04-17 23:07:03,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 23:07:03,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:07:03,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 23:07:03,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-17 23:07:03,434 INFO L87 Difference]: Start difference. First operand 225 states and 560 transitions. Second operand 4 states. [2020-04-17 23:07:03,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:07:03,470 INFO L93 Difference]: Finished difference Result 361 states and 855 transitions. [2020-04-17 23:07:03,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:07:03,471 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 23:07:03,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:07:03,474 INFO L225 Difference]: With dead ends: 361 [2020-04-17 23:07:03,474 INFO L226 Difference]: Without dead ends: 358 [2020-04-17 23:07:03,474 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 [2020-04-17 23:07:03,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-04-17 23:07:03,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 269. [2020-04-17 23:07:03,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-04-17 23:07:03,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 662 transitions. [2020-04-17 23:07:03,502 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 662 transitions. Word has length 17 [2020-04-17 23:07:03,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:07:03,503 INFO L479 AbstractCegarLoop]: Abstraction has 269 states and 662 transitions. [2020-04-17 23:07:03,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 23:07:03,503 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 662 transitions. [2020-04-17 23:07:03,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 23:07:03,505 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:07:03,505 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:07:03,505 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:07:03,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:07:03,506 INFO L82 PathProgramCache]: Analyzing trace with hash 360564935, now seen corresponding path program 1 times [2020-04-17 23:07:03,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:07:03,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555840216] [2020-04-17 23:07:03,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:07:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:07:03,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:07:03,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555840216] [2020-04-17 23:07:03,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:07:03,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 23:07:03,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100135929] [2020-04-17 23:07:03,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:07:03,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:07:03,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:07:03,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:07:03,563 INFO L87 Difference]: Start difference. First operand 269 states and 662 transitions. Second operand 3 states. [2020-04-17 23:07:03,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:07:03,620 INFO L93 Difference]: Finished difference Result 223 states and 471 transitions. [2020-04-17 23:07:03,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:07:03,621 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-04-17 23:07:03,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:07:03,624 INFO L225 Difference]: With dead ends: 223 [2020-04-17 23:07:03,624 INFO L226 Difference]: Without dead ends: 152 [2020-04-17 23:07:03,624 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 [2020-04-17 23:07:03,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-04-17 23:07:03,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 126. [2020-04-17 23:07:03,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-04-17 23:07:03,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 245 transitions. [2020-04-17 23:07:03,631 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 245 transitions. Word has length 17 [2020-04-17 23:07:03,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:07:03,631 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 245 transitions. [2020-04-17 23:07:03,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:07:03,632 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 245 transitions. [2020-04-17 23:07:03,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 23:07:03,633 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:07:03,633 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:07:03,633 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:07:03,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:07:03,634 INFO L82 PathProgramCache]: Analyzing trace with hash 685760811, now seen corresponding path program 2 times [2020-04-17 23:07:03,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:07:03,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224386768] [2020-04-17 23:07:03,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:07:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:07:03,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:07:03,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224386768] [2020-04-17 23:07:03,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:07:03,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 23:07:03,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959649673] [2020-04-17 23:07:03,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:07:03,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:07:03,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:07:03,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:07:03,695 INFO L87 Difference]: Start difference. First operand 126 states and 245 transitions. Second operand 3 states. [2020-04-17 23:07:03,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:07:03,712 INFO L93 Difference]: Finished difference Result 178 states and 338 transitions. [2020-04-17 23:07:03,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:07:03,712 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-04-17 23:07:03,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:07:03,714 INFO L225 Difference]: With dead ends: 178 [2020-04-17 23:07:03,714 INFO L226 Difference]: Without dead ends: 175 [2020-04-17 23:07:03,714 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 [2020-04-17 23:07:03,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-04-17 23:07:03,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 120. [2020-04-17 23:07:03,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-04-17 23:07:03,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 228 transitions. [2020-04-17 23:07:03,721 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 228 transitions. Word has length 17 [2020-04-17 23:07:03,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:07:03,721 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 228 transitions. [2020-04-17 23:07:03,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:07:03,722 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 228 transitions. [2020-04-17 23:07:03,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-17 23:07:03,722 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:07:03,722 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] [2020-04-17 23:07:03,723 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:07:03,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:07:03,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1792170110, now seen corresponding path program 1 times [2020-04-17 23:07:03,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:07:03,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651882109] [2020-04-17 23:07:03,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:07:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:07:03,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:07:03,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651882109] [2020-04-17 23:07:03,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:07:03,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 23:07:03,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930922215] [2020-04-17 23:07:03,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:07:03,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:07:03,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:07:03,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:07:03,793 INFO L87 Difference]: Start difference. First operand 120 states and 228 transitions. Second operand 3 states. [2020-04-17 23:07:03,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:07:03,810 INFO L93 Difference]: Finished difference Result 112 states and 212 transitions. [2020-04-17 23:07:03,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:07:03,811 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-04-17 23:07:03,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:07:03,812 INFO L225 Difference]: With dead ends: 112 [2020-04-17 23:07:03,812 INFO L226 Difference]: Without dead ends: 90 [2020-04-17 23:07:03,813 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 [2020-04-17 23:07:03,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-04-17 23:07:03,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-04-17 23:07:03,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-04-17 23:07:03,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 171 transitions. [2020-04-17 23:07:03,815 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 171 transitions. Word has length 20 [2020-04-17 23:07:03,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:07:03,817 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 171 transitions. [2020-04-17 23:07:03,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:07:03,817 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 171 transitions. [2020-04-17 23:07:03,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-17 23:07:03,818 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:07:03,818 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] [2020-04-17 23:07:03,818 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:07:03,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:07:03,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1787104108, now seen corresponding path program 1 times [2020-04-17 23:07:03,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:07:03,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049690691] [2020-04-17 23:07:03,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:07:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:07:03,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:07:03,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049690691] [2020-04-17 23:07:03,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:07:03,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 23:07:03,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734361020] [2020-04-17 23:07:03,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:07:03,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:07:03,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:07:03,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:07:03,848 INFO L87 Difference]: Start difference. First operand 90 states and 171 transitions. Second operand 3 states. [2020-04-17 23:07:03,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:07:03,853 INFO L93 Difference]: Finished difference Result 63 states and 131 transitions. [2020-04-17 23:07:03,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:07:03,854 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-04-17 23:07:03,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:07:03,855 INFO L225 Difference]: With dead ends: 63 [2020-04-17 23:07:03,855 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 23:07:03,856 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 [2020-04-17 23:07:03,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 23:07:03,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 23:07:03,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 23:07:03,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 23:07:03,857 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-04-17 23:07:03,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:07:03,857 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 23:07:03,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:07:03,857 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 23:07:03,857 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 23:07:03,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 11:07:03 BasicIcfg [2020-04-17 23:07:03,861 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 23:07:03,863 INFO L168 Benchmark]: Toolchain (without parser) took 4098.05 ms. Allocated memory was 144.7 MB in the beginning and 248.0 MB in the end (delta: 103.3 MB). Free memory was 100.9 MB in the beginning and 176.1 MB in the end (delta: -75.3 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2020-04-17 23:07:03,864 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 144.7 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-17 23:07:03,865 INFO L168 Benchmark]: CACSL2BoogieTranslator took 769.02 ms. Allocated memory was 144.7 MB in the beginning and 205.0 MB in the end (delta: 60.3 MB). Free memory was 98.9 MB in the beginning and 164.7 MB in the end (delta: -65.8 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-04-17 23:07:03,866 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.46 ms. Allocated memory is still 205.0 MB. Free memory was 164.7 MB in the beginning and 162.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-17 23:07:03,867 INFO L168 Benchmark]: Boogie Preprocessor took 30.82 ms. Allocated memory is still 205.0 MB. Free memory was 162.6 MB in the beginning and 161.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-17 23:07:03,867 INFO L168 Benchmark]: RCFGBuilder took 529.60 ms. Allocated memory is still 205.0 MB. Free memory was 161.2 MB in the beginning and 138.1 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-04-17 23:07:03,868 INFO L168 Benchmark]: TraceAbstraction took 2668.24 ms. Allocated memory was 205.0 MB in the beginning and 248.0 MB in the end (delta: 43.0 MB). Free memory was 138.1 MB in the beginning and 176.1 MB in the end (delta: -38.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2020-04-17 23:07:03,878 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 144.7 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 769.02 ms. Allocated memory was 144.7 MB in the beginning and 205.0 MB in the end (delta: 60.3 MB). Free memory was 98.9 MB in the beginning and 164.7 MB in the end (delta: -65.8 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 73.46 ms. Allocated memory is still 205.0 MB. Free memory was 164.7 MB in the beginning and 162.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.82 ms. Allocated memory is still 205.0 MB. Free memory was 162.6 MB in the beginning and 161.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 529.60 ms. Allocated memory is still 205.0 MB. Free memory was 161.2 MB in the beginning and 138.1 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2668.24 ms. Allocated memory was 205.0 MB in the beginning and 248.0 MB in the end (delta: 43.0 MB). Free memory was 138.1 MB in the beginning and 176.1 MB in the end (delta: -38.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.0s, 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: 2.5s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.1s, HoareTripleCheckerStatistics: 486 SDtfs, 194 SDslu, 262 SDs, 0 SdLazy, 93 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s 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, 189 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s 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...