/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-ext/16_peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 14:35:43,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 14:35:43,458 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 14:35:43,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 14:35:43,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 14:35:43,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 14:35:43,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 14:35:43,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 14:35:43,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 14:35:43,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 14:35:43,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 14:35:43,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 14:35:43,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 14:35:43,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 14:35:43,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 14:35:43,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 14:35:43,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 14:35:43,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 14:35:43,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 14:35:43,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 14:35:43,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 14:35:43,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 14:35:43,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 14:35:43,529 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 14:35:43,531 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 14:35:43,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 14:35:43,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 14:35:43,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 14:35:43,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 14:35:43,536 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 14:35:43,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 14:35:43,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 14:35:43,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 14:35:43,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 14:35:43,542 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 14:35:43,542 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 14:35:43,543 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 14:35:43,543 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 14:35:43,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 14:35:43,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 14:35:43,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 14:35:43,546 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-04-17 14:35:43,570 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 14:35:43,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 14:35:43,572 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 14:35:43,572 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 14:35:43,576 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 14:35:43,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 14:35:43,577 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 14:35:43,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 14:35:43,577 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 14:35:43,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 14:35:43,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 14:35:43,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 14:35:43,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 14:35:43,578 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 14:35:43,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 14:35:43,579 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 14:35:43,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 14:35:43,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 14:35:43,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 14:35:43,580 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 14:35:43,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 14:35:43,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 14:35:43,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 14:35:43,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 14:35:43,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 14:35:43,581 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 14:35:43,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 14:35:43,581 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 14:35:43,581 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-04-17 14:35:43,582 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 14:35:43,854 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 14:35:43,872 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 14:35:43,876 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 14:35:43,877 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 14:35:43,878 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 14:35:43,879 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/16_peterson.i [2020-04-17 14:35:43,956 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08587e699/a4f677cf5a2c40cca532d32823f7622f/FLAGaa16ddf28 [2020-04-17 14:35:44,524 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 14:35:44,524 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/16_peterson.i [2020-04-17 14:35:44,544 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08587e699/a4f677cf5a2c40cca532d32823f7622f/FLAGaa16ddf28 [2020-04-17 14:35:44,798 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08587e699/a4f677cf5a2c40cca532d32823f7622f [2020-04-17 14:35:44,807 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 14:35:44,830 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 14:35:44,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 14:35:44,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 14:35:44,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 14:35:44,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 02:35:44" (1/1) ... [2020-04-17 14:35:44,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@129ac6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:35:44, skipping insertion in model container [2020-04-17 14:35:44,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 02:35:44" (1/1) ... [2020-04-17 14:35:44,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 14:35:44,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 14:35:45,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 14:35:45,361 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 14:35:45,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 14:35:45,468 INFO L208 MainTranslator]: Completed translation [2020-04-17 14:35:45,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:35:45 WrapperNode [2020-04-17 14:35:45,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 14:35:45,469 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 14:35:45,469 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 14:35:45,469 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 14:35:45,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:35:45" (1/1) ... [2020-04-17 14:35:45,495 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:35:45" (1/1) ... [2020-04-17 14:35:45,515 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 14:35:45,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 14:35:45,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 14:35:45,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 14:35:45,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:35:45" (1/1) ... [2020-04-17 14:35:45,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:35:45" (1/1) ... [2020-04-17 14:35:45,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:35:45" (1/1) ... [2020-04-17 14:35:45,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:35:45" (1/1) ... [2020-04-17 14:35:45,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:35:45" (1/1) ... [2020-04-17 14:35:45,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:35:45" (1/1) ... [2020-04-17 14:35:45,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:35:45" (1/1) ... [2020-04-17 14:35:45,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 14:35:45,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 14:35:45,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 14:35:45,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 14:35:45,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:35:45" (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 14:35:45,616 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-04-17 14:35:45,616 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-04-17 14:35:45,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 14:35:45,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 14:35:45,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 14:35:45,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 14:35:45,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 14:35:45,618 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 14:35:45,987 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 14:35:45,988 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 14:35:45,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 02:35:45 BoogieIcfgContainer [2020-04-17 14:35:45,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 14:35:45,994 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 14:35:45,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 14:35:45,998 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 14:35:45,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 02:35:44" (1/3) ... [2020-04-17 14:35:45,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4260c9e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 02:35:45, skipping insertion in model container [2020-04-17 14:35:46,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:35:45" (2/3) ... [2020-04-17 14:35:46,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4260c9e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 02:35:46, skipping insertion in model container [2020-04-17 14:35:46,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 02:35:45" (3/3) ... [2020-04-17 14:35:46,002 INFO L109 eAbstractionObserver]: Analyzing ICFG 16_peterson.i [2020-04-17 14:35:46,013 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 14:35:46,014 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 14:35:46,022 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-04-17 14:35:46,023 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 14:35:46,044 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:46,044 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:46,044 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:46,045 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:46,046 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:46,046 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:46,049 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:46,050 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:46,050 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:46,050 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:46,070 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 14:35:46,089 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 14:35:46,089 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 14:35:46,089 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 14:35:46,089 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 14:35:46,090 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 14:35:46,090 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 14:35:46,090 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 14:35:46,090 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 14:35:46,104 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 51 transitions, 107 flow [2020-04-17 14:35:46,106 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 49 places, 51 transitions, 107 flow [2020-04-17 14:35:46,141 INFO L129 PetriNetUnfolder]: 6/50 cut-off events. [2020-04-17 14:35:46,141 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 14:35:46,147 INFO L80 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 50 events. 6/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2020-04-17 14:35:46,149 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 49 places, 51 transitions, 107 flow [2020-04-17 14:35:46,165 INFO L129 PetriNetUnfolder]: 6/50 cut-off events. [2020-04-17 14:35:46,166 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 14:35:46,167 INFO L80 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 50 events. 6/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2020-04-17 14:35:46,168 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-04-17 14:35:46,170 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 14:35:47,238 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1287 [2020-04-17 14:35:47,239 INFO L214 etLargeBlockEncoding]: Total number of compositions: 36 [2020-04-17 14:35:47,242 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 22 transitions, 49 flow [2020-04-17 14:35:47,258 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 66 states. [2020-04-17 14:35:47,261 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-04-17 14:35:47,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-17 14:35:47,272 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 14:35:47,273 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-17 14:35:47,273 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 14:35:47,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 14:35:47,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1942834628, now seen corresponding path program 1 times [2020-04-17 14:35:47,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 14:35:47,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507795720] [2020-04-17 14:35:47,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 14:35:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 14:35:47,455 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 14:35:47,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507795720] [2020-04-17 14:35:47,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 14:35:47,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 14:35:47,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790127326] [2020-04-17 14:35:47,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 14:35:47,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 14:35:47,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 14:35:47,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 14:35:47,481 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 2 states. [2020-04-17 14:35:47,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 14:35:47,499 INFO L93 Difference]: Finished difference Result 66 states and 130 transitions. [2020-04-17 14:35:47,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 14:35:47,500 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-04-17 14:35:47,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 14:35:47,513 INFO L225 Difference]: With dead ends: 66 [2020-04-17 14:35:47,513 INFO L226 Difference]: Without dead ends: 62 [2020-04-17 14:35:47,515 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 14:35:47,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-04-17 14:35:47,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-04-17 14:35:47,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-04-17 14:35:47,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 122 transitions. [2020-04-17 14:35:47,555 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 122 transitions. Word has length 6 [2020-04-17 14:35:47,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 14:35:47,555 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 122 transitions. [2020-04-17 14:35:47,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 14:35:47,556 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 122 transitions. [2020-04-17 14:35:47,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-17 14:35:47,557 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 14:35:47,557 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-17 14:35:47,557 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 14:35:47,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 14:35:47,558 INFO L82 PathProgramCache]: Analyzing trace with hash 98318518, now seen corresponding path program 1 times [2020-04-17 14:35:47,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 14:35:47,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303156197] [2020-04-17 14:35:47,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 14:35:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 14:35:47,663 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 14:35:47,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303156197] [2020-04-17 14:35:47,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 14:35:47,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 14:35:47,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092743300] [2020-04-17 14:35:47,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 14:35:47,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 14:35:47,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 14:35:47,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 14:35:47,668 INFO L87 Difference]: Start difference. First operand 62 states and 122 transitions. Second operand 3 states. [2020-04-17 14:35:47,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 14:35:47,709 INFO L93 Difference]: Finished difference Result 66 states and 121 transitions. [2020-04-17 14:35:47,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 14:35:47,711 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-04-17 14:35:47,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 14:35:47,713 INFO L225 Difference]: With dead ends: 66 [2020-04-17 14:35:47,713 INFO L226 Difference]: Without dead ends: 56 [2020-04-17 14:35:47,715 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 14:35:47,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-04-17 14:35:47,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2020-04-17 14:35:47,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-04-17 14:35:47,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 98 transitions. [2020-04-17 14:35:47,733 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 98 transitions. Word has length 7 [2020-04-17 14:35:47,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 14:35:47,733 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 98 transitions. [2020-04-17 14:35:47,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 14:35:47,734 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 98 transitions. [2020-04-17 14:35:47,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-17 14:35:47,735 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 14:35:47,735 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-17 14:35:47,735 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 14:35:47,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 14:35:47,736 INFO L82 PathProgramCache]: Analyzing trace with hash 114699826, now seen corresponding path program 1 times [2020-04-17 14:35:47,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 14:35:47,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433298522] [2020-04-17 14:35:47,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 14:35:47,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 14:35:47,803 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 14:35:47,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433298522] [2020-04-17 14:35:47,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 14:35:47,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 14:35:47,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142719241] [2020-04-17 14:35:47,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 14:35:47,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 14:35:47,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 14:35:47,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 14:35:47,806 INFO L87 Difference]: Start difference. First operand 52 states and 98 transitions. Second operand 3 states. [2020-04-17 14:35:47,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 14:35:47,825 INFO L93 Difference]: Finished difference Result 48 states and 85 transitions. [2020-04-17 14:35:47,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 14:35:47,826 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-04-17 14:35:47,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 14:35:47,827 INFO L225 Difference]: With dead ends: 48 [2020-04-17 14:35:47,827 INFO L226 Difference]: Without dead ends: 38 [2020-04-17 14:35:47,828 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 14:35:47,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-04-17 14:35:47,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-04-17 14:35:47,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-04-17 14:35:47,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 66 transitions. [2020-04-17 14:35:47,834 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 66 transitions. Word has length 7 [2020-04-17 14:35:47,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 14:35:47,834 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 66 transitions. [2020-04-17 14:35:47,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 14:35:47,834 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 66 transitions. [2020-04-17 14:35:47,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 14:35:47,835 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 14:35:47,836 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 14:35:47,836 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 14:35:47,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 14:35:47,836 INFO L82 PathProgramCache]: Analyzing trace with hash -480213144, now seen corresponding path program 1 times [2020-04-17 14:35:47,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 14:35:47,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167945262] [2020-04-17 14:35:47,837 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 14:35:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 14:35:47,889 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 14:35:47,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167945262] [2020-04-17 14:35:47,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 14:35:47,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 14:35:47,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863567062] [2020-04-17 14:35:47,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 14:35:47,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 14:35:47,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 14:35:47,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-17 14:35:47,891 INFO L87 Difference]: Start difference. First operand 38 states and 66 transitions. Second operand 4 states. [2020-04-17 14:35:47,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 14:35:47,925 INFO L93 Difference]: Finished difference Result 43 states and 75 transitions. [2020-04-17 14:35:47,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 14:35:47,925 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 14:35:47,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 14:35:47,926 INFO L225 Difference]: With dead ends: 43 [2020-04-17 14:35:47,926 INFO L226 Difference]: Without dead ends: 34 [2020-04-17 14:35:47,927 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 14:35:47,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-04-17 14:35:47,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-04-17 14:35:47,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-04-17 14:35:47,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 53 transitions. [2020-04-17 14:35:47,932 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 53 transitions. Word has length 11 [2020-04-17 14:35:47,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 14:35:47,933 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 53 transitions. [2020-04-17 14:35:47,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 14:35:47,933 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 53 transitions. [2020-04-17 14:35:47,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 14:35:47,934 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 14:35:47,934 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 14:35:47,934 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 14:35:47,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 14:35:47,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1657399704, now seen corresponding path program 2 times [2020-04-17 14:35:47,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 14:35:47,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099706834] [2020-04-17 14:35:47,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 14:35:47,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 14:35:47,983 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 14:35:47,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099706834] [2020-04-17 14:35:47,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 14:35:47,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 14:35:47,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967984541] [2020-04-17 14:35:47,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 14:35:47,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 14:35:47,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 14:35:47,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-17 14:35:47,985 INFO L87 Difference]: Start difference. First operand 34 states and 53 transitions. Second operand 4 states. [2020-04-17 14:35:47,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 14:35:47,998 INFO L93 Difference]: Finished difference Result 17 states and 29 transitions. [2020-04-17 14:35:47,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 14:35:47,999 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 14:35:47,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 14:35:47,999 INFO L225 Difference]: With dead ends: 17 [2020-04-17 14:35:48,000 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 14:35:48,000 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 14:35:48,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 14:35:48,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 14:35:48,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 14:35:48,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 14:35:48,001 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-04-17 14:35:48,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 14:35:48,002 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 14:35:48,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 14:35:48,002 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 14:35:48,002 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 14:35:48,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 02:35:48 BasicIcfg [2020-04-17 14:35:48,006 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 14:35:48,009 INFO L168 Benchmark]: Toolchain (without parser) took 3199.90 ms. Allocated memory was 146.3 MB in the beginning and 234.4 MB in the end (delta: 88.1 MB). Free memory was 101.2 MB in the beginning and 93.0 MB in the end (delta: 8.2 MB). Peak memory consumption was 96.3 MB. Max. memory is 7.1 GB. [2020-04-17 14:35:48,010 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 146.3 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-17 14:35:48,011 INFO L168 Benchmark]: CACSL2BoogieTranslator took 637.66 ms. Allocated memory was 146.3 MB in the beginning and 205.0 MB in the end (delta: 58.7 MB). Free memory was 99.4 MB in the beginning and 164.9 MB in the end (delta: -65.5 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-04-17 14:35:48,012 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.51 ms. Allocated memory is still 205.0 MB. Free memory was 164.9 MB in the beginning and 162.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-17 14:35:48,013 INFO L168 Benchmark]: Boogie Preprocessor took 25.56 ms. Allocated memory is still 205.0 MB. Free memory was 162.8 MB in the beginning and 161.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-17 14:35:48,014 INFO L168 Benchmark]: RCFGBuilder took 451.45 ms. Allocated memory is still 205.0 MB. Free memory was 161.5 MB in the beginning and 143.1 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. [2020-04-17 14:35:48,015 INFO L168 Benchmark]: TraceAbstraction took 2012.15 ms. Allocated memory was 205.0 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Free memory was 142.4 MB in the beginning and 93.0 MB in the end (delta: 49.4 MB). Peak memory consumption was 78.8 MB. Max. memory is 7.1 GB. [2020-04-17 14:35:48,019 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 146.3 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 637.66 ms. Allocated memory was 146.3 MB in the beginning and 205.0 MB in the end (delta: 58.7 MB). Free memory was 99.4 MB in the beginning and 164.9 MB in the end (delta: -65.5 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 46.51 ms. Allocated memory is still 205.0 MB. Free memory was 164.9 MB in the beginning and 162.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.56 ms. Allocated memory is still 205.0 MB. Free memory was 162.8 MB in the beginning and 161.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 451.45 ms. Allocated memory is still 205.0 MB. Free memory was 161.5 MB in the beginning and 143.1 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2012.15 ms. Allocated memory was 205.0 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Free memory was 142.4 MB in the beginning and 93.0 MB in the end (delta: 49.4 MB). Peak memory consumption was 78.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.1s, 49 ProgramPointsBefore, 21 ProgramPointsAfterwards, 51 TransitionsBefore, 22 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 6 FixpointIterations, 10 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 330 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 19 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1287 CheckedPairsTotal, 36 TotalNumberOfCompositions - PositiveResult [Line: 681]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 690]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 46 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.1s, HoareTripleCheckerStatistics: 93 SDtfs, 44 SDslu, 33 SDs, 0 SdLazy, 33 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 521 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...