/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/20_lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 12:11:20,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 12:11:20,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 12:11:20,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 12:11:20,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 12:11:20,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 12:11:20,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 12:11:20,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 12:11:20,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 12:11:20,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 12:11:20,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 12:11:20,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 12:11:20,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 12:11:20,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 12:11:20,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 12:11:20,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 12:11:20,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 12:11:20,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 12:11:20,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 12:11:20,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 12:11:20,429 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 12:11:20,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 12:11:20,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 12:11:20,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 12:11:20,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-11 12:11:20,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 12:11:20,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 12:11:20,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 12:11:20,453 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 12:11:20,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 12:11:20,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 12:11:20,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 12:11:20,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 12:11:20,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 12:11:20,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 12:11:20,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 12:11:20,461 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-11 12:11:20,528 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 12:11:20,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 12:11:20,529 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 12:11:20,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 12:11:20,532 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 12:11:20,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 12:11:20,532 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 12:11:20,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 12:11:20,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 12:11:20,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 12:11:20,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 12:11:20,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 12:11:20,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 12:11:20,533 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 12:11:20,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 12:11:20,535 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 12:11:20,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 12:11:20,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 12:11:20,536 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 12:11:20,536 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 12:11:20,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 12:11:20,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 12:11:20,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 12:11:20,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-11 12:11:20,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 12:11:20,538 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 12:11:20,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 12:11:20,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 12:11:20,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-11 12:11:20,538 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-11 12:11:21,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 12:11:21,048 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 12:11:21,052 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 12:11:21,054 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 12:11:21,055 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 12:11:21,056 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/20_lamport.i [2020-09-11 12:11:21,140 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/910945529/488b3653cdef41108bdd8125acd2e0ec/FLAGfb66af8dc [2020-09-11 12:11:21,767 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 12:11:21,768 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-ext/20_lamport.i [2020-09-11 12:11:21,785 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/910945529/488b3653cdef41108bdd8125acd2e0ec/FLAGfb66af8dc [2020-09-11 12:11:22,027 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/910945529/488b3653cdef41108bdd8125acd2e0ec [2020-09-11 12:11:22,042 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 12:11:22,051 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 12:11:22,055 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 12:11:22,055 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 12:11:22,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 12:11:22,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 12:11:22" (1/1) ... [2020-09-11 12:11:22,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47996ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:11:22, skipping insertion in model container [2020-09-11 12:11:22,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 12:11:22" (1/1) ... [2020-09-11 12:11:22,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 12:11:22,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 12:11:22,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 12:11:22,792 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 12:11:22,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 12:11:22,990 INFO L208 MainTranslator]: Completed translation [2020-09-11 12:11:22,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:11:22 WrapperNode [2020-09-11 12:11:22,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 12:11:22,993 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 12:11:22,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 12:11:22,994 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 12:11:23,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:11:22" (1/1) ... [2020-09-11 12:11:23,051 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:11:22" (1/1) ... [2020-09-11 12:11:23,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 12:11:23,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 12:11:23,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 12:11:23,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 12:11:23,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:11:22" (1/1) ... [2020-09-11 12:11:23,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:11:22" (1/1) ... [2020-09-11 12:11:23,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:11:22" (1/1) ... [2020-09-11 12:11:23,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:11:22" (1/1) ... [2020-09-11 12:11:23,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:11:22" (1/1) ... [2020-09-11 12:11:23,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:11:22" (1/1) ... [2020-09-11 12:11:23,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:11:22" (1/1) ... [2020-09-11 12:11:23,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 12:11:23,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 12:11:23,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 12:11:23,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 12:11:23,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:11:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 12:11:23,207 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-09-11 12:11:23,207 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-09-11 12:11:23,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 12:11:23,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 12:11:23,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 12:11:23,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 12:11:23,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 12:11:23,210 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 12:11:23,609 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 12:11:23,609 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-09-11 12:11:23,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 12:11:23 BoogieIcfgContainer [2020-09-11 12:11:23,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 12:11:23,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 12:11:23,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 12:11:23,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 12:11:23,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 12:11:22" (1/3) ... [2020-09-11 12:11:23,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6efda74d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 12:11:23, skipping insertion in model container [2020-09-11 12:11:23,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:11:22" (2/3) ... [2020-09-11 12:11:23,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6efda74d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 12:11:23, skipping insertion in model container [2020-09-11 12:11:23,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 12:11:23" (3/3) ... [2020-09-11 12:11:23,625 INFO L109 eAbstractionObserver]: Analyzing ICFG 20_lamport.i [2020-09-11 12:11:23,637 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 12:11:23,638 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-11 12:11:23,649 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-09-11 12:11:23,650 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 12:11:23,680 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:23,681 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:23,681 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:23,681 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:23,683 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:23,683 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:23,688 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:23,688 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:23,689 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:23,689 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:23,735 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 12:11:23,759 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 12:11:23,759 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 12:11:23,759 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 12:11:23,760 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 12:11:23,760 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 12:11:23,760 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 12:11:23,760 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 12:11:23,760 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 12:11:23,779 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 92 transitions, 189 flow [2020-09-11 12:11:23,782 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 72 places, 92 transitions, 189 flow [2020-09-11 12:11:23,834 INFO L129 PetriNetUnfolder]: 24/91 cut-off events. [2020-09-11 12:11:23,835 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 12:11:23,843 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. [2020-09-11 12:11:23,849 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 72 places, 92 transitions, 189 flow [2020-09-11 12:11:23,875 INFO L129 PetriNetUnfolder]: 24/91 cut-off events. [2020-09-11 12:11:23,875 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 12:11:23,877 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. [2020-09-11 12:11:23,881 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2992 [2020-09-11 12:11:23,883 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 12:11:25,254 INFO L206 etLargeBlockEncoding]: Checked pairs total: 7520 [2020-09-11 12:11:25,255 INFO L214 etLargeBlockEncoding]: Total number of compositions: 46 [2020-09-11 12:11:25,260 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 51 transitions, 107 flow [2020-09-11 12:11:25,295 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 291 states. [2020-09-11 12:11:25,298 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states. [2020-09-11 12:11:25,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-11 12:11:25,307 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:11:25,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-11 12:11:25,309 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 12:11:25,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:11:25,316 INFO L82 PathProgramCache]: Analyzing trace with hash 12384667, now seen corresponding path program 1 times [2020-09-11 12:11:25,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:11:25,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668740551] [2020-09-11 12:11:25,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:11:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:11:25,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 12:11:25,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668740551] [2020-09-11 12:11:25,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 12:11:25,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 12:11:25,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185122844] [2020-09-11 12:11:25,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-11 12:11:25,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 12:11:25,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-11 12:11:25,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-11 12:11:25,561 INFO L87 Difference]: Start difference. First operand 291 states. Second operand 2 states. [2020-09-11 12:11:25,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 12:11:25,598 INFO L93 Difference]: Finished difference Result 291 states and 750 transitions. [2020-09-11 12:11:25,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-11 12:11:25,600 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-09-11 12:11:25,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 12:11:25,620 INFO L225 Difference]: With dead ends: 291 [2020-09-11 12:11:25,621 INFO L226 Difference]: Without dead ends: 282 [2020-09-11 12:11:25,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-11 12:11:25,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-09-11 12:11:25,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-09-11 12:11:25,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-09-11 12:11:25,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 732 transitions. [2020-09-11 12:11:25,700 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 732 transitions. Word has length 4 [2020-09-11 12:11:25,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 12:11:25,701 INFO L479 AbstractCegarLoop]: Abstraction has 282 states and 732 transitions. [2020-09-11 12:11:25,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-11 12:11:25,701 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 732 transitions. [2020-09-11 12:11:25,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 12:11:25,702 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:11:25,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 12:11:25,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 12:11:25,703 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 12:11:25,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:11:25,704 INFO L82 PathProgramCache]: Analyzing trace with hash 27980612, now seen corresponding path program 1 times [2020-09-11 12:11:25,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:11:25,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820329765] [2020-09-11 12:11:25,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:11:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:11:25,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 12:11:25,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820329765] [2020-09-11 12:11:25,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 12:11:25,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 12:11:25,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630251490] [2020-09-11 12:11:25,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 12:11:25,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 12:11:25,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 12:11:25,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 12:11:25,790 INFO L87 Difference]: Start difference. First operand 282 states and 732 transitions. Second operand 3 states. [2020-09-11 12:11:25,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 12:11:25,828 INFO L93 Difference]: Finished difference Result 281 states and 714 transitions. [2020-09-11 12:11:25,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 12:11:25,829 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-11 12:11:25,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 12:11:25,832 INFO L225 Difference]: With dead ends: 281 [2020-09-11 12:11:25,832 INFO L226 Difference]: Without dead ends: 242 [2020-09-11 12:11:25,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 12:11:25,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-09-11 12:11:25,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 236. [2020-09-11 12:11:25,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-09-11 12:11:25,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 615 transitions. [2020-09-11 12:11:25,855 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 615 transitions. Word has length 9 [2020-09-11 12:11:25,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 12:11:25,856 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 615 transitions. [2020-09-11 12:11:25,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 12:11:25,856 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 615 transitions. [2020-09-11 12:11:25,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 12:11:25,857 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:11:25,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 12:11:25,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 12:11:25,858 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 12:11:25,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:11:25,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1037274544, now seen corresponding path program 1 times [2020-09-11 12:11:25,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:11:25,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098838164] [2020-09-11 12:11:25,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:11:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:11:25,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 12:11:25,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098838164] [2020-09-11 12:11:25,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 12:11:25,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 12:11:25,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365733984] [2020-09-11 12:11:25,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 12:11:25,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 12:11:25,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 12:11:25,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 12:11:25,945 INFO L87 Difference]: Start difference. First operand 236 states and 615 transitions. Second operand 3 states. [2020-09-11 12:11:25,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 12:11:25,980 INFO L93 Difference]: Finished difference Result 225 states and 582 transitions. [2020-09-11 12:11:25,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 12:11:25,981 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-11 12:11:25,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 12:11:25,984 INFO L225 Difference]: With dead ends: 225 [2020-09-11 12:11:25,985 INFO L226 Difference]: Without dead ends: 186 [2020-09-11 12:11:25,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 12:11:25,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-09-11 12:11:26,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2020-09-11 12:11:26,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-09-11 12:11:26,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 490 transitions. [2020-09-11 12:11:26,012 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 490 transitions. Word has length 9 [2020-09-11 12:11:26,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 12:11:26,012 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 490 transitions. [2020-09-11 12:11:26,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 12:11:26,013 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 490 transitions. [2020-09-11 12:11:26,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 12:11:26,018 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:11:26,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 12:11:26,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 12:11:26,018 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 12:11:26,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:11:26,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1540220195, now seen corresponding path program 1 times [2020-09-11 12:11:26,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:11:26,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263567802] [2020-09-11 12:11:26,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:11:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:11:26,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 12:11:26,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263567802] [2020-09-11 12:11:26,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 12:11:26,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 12:11:26,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218941109] [2020-09-11 12:11:26,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 12:11:26,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 12:11:26,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 12:11:26,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 12:11:26,109 INFO L87 Difference]: Start difference. First operand 186 states and 490 transitions. Second operand 3 states. [2020-09-11 12:11:26,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 12:11:26,134 INFO L93 Difference]: Finished difference Result 308 states and 768 transitions. [2020-09-11 12:11:26,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 12:11:26,134 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-09-11 12:11:26,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 12:11:26,137 INFO L225 Difference]: With dead ends: 308 [2020-09-11 12:11:26,137 INFO L226 Difference]: Without dead ends: 306 [2020-09-11 12:11:26,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 12:11:26,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-09-11 12:11:26,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 229. [2020-09-11 12:11:26,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-09-11 12:11:26,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 602 transitions. [2020-09-11 12:11:26,150 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 602 transitions. Word has length 15 [2020-09-11 12:11:26,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 12:11:26,150 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 602 transitions. [2020-09-11 12:11:26,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 12:11:26,150 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 602 transitions. [2020-09-11 12:11:26,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 12:11:26,153 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:11:26,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 12:11:26,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 12:11:26,154 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 12:11:26,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:11:26,154 INFO L82 PathProgramCache]: Analyzing trace with hash 988190489, now seen corresponding path program 1 times [2020-09-11 12:11:26,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:11:26,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127935309] [2020-09-11 12:11:26,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:11:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:11:26,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 12:11:26,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127935309] [2020-09-11 12:11:26,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 12:11:26,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 12:11:26,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163980922] [2020-09-11 12:11:26,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 12:11:26,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 12:11:26,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 12:11:26,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 12:11:26,227 INFO L87 Difference]: Start difference. First operand 229 states and 602 transitions. Second operand 3 states. [2020-09-11 12:11:26,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 12:11:26,317 INFO L93 Difference]: Finished difference Result 312 states and 770 transitions. [2020-09-11 12:11:26,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 12:11:26,320 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-09-11 12:11:26,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 12:11:26,323 INFO L225 Difference]: With dead ends: 312 [2020-09-11 12:11:26,323 INFO L226 Difference]: Without dead ends: 237 [2020-09-11 12:11:26,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 12:11:26,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-09-11 12:11:26,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 216. [2020-09-11 12:11:26,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-09-11 12:11:26,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 534 transitions. [2020-09-11 12:11:26,336 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 534 transitions. Word has length 15 [2020-09-11 12:11:26,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 12:11:26,336 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 534 transitions. [2020-09-11 12:11:26,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 12:11:26,337 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 534 transitions. [2020-09-11 12:11:26,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 12:11:26,343 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:11:26,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 12:11:26,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 12:11:26,344 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 12:11:26,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:11:26,344 INFO L82 PathProgramCache]: Analyzing trace with hash -795157281, now seen corresponding path program 2 times [2020-09-11 12:11:26,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:11:26,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787020546] [2020-09-11 12:11:26,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:11:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:11:26,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 12:11:26,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787020546] [2020-09-11 12:11:26,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 12:11:26,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 12:11:26,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369158385] [2020-09-11 12:11:26,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 12:11:26,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 12:11:26,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 12:11:26,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 12:11:26,419 INFO L87 Difference]: Start difference. First operand 216 states and 534 transitions. Second operand 3 states. [2020-09-11 12:11:26,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 12:11:26,437 INFO L93 Difference]: Finished difference Result 293 states and 674 transitions. [2020-09-11 12:11:26,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 12:11:26,437 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-09-11 12:11:26,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 12:11:26,439 INFO L225 Difference]: With dead ends: 293 [2020-09-11 12:11:26,440 INFO L226 Difference]: Without dead ends: 293 [2020-09-11 12:11:26,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 12:11:26,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-09-11 12:11:26,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 216. [2020-09-11 12:11:26,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-09-11 12:11:26,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 522 transitions. [2020-09-11 12:11:26,448 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 522 transitions. Word has length 15 [2020-09-11 12:11:26,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 12:11:26,450 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 522 transitions. [2020-09-11 12:11:26,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 12:11:26,450 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 522 transitions. [2020-09-11 12:11:26,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 12:11:26,451 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:11:26,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 12:11:26,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 12:11:26,451 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 12:11:26,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:11:26,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1884700835, now seen corresponding path program 2 times [2020-09-11 12:11:26,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:11:26,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313522926] [2020-09-11 12:11:26,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:11:26,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:11:26,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 12:11:26,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313522926] [2020-09-11 12:11:26,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 12:11:26,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 12:11:26,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068195226] [2020-09-11 12:11:26,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 12:11:26,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 12:11:26,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 12:11:26,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 12:11:26,492 INFO L87 Difference]: Start difference. First operand 216 states and 522 transitions. Second operand 3 states. [2020-09-11 12:11:26,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 12:11:26,532 INFO L93 Difference]: Finished difference Result 181 states and 375 transitions. [2020-09-11 12:11:26,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 12:11:26,533 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-09-11 12:11:26,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 12:11:26,534 INFO L225 Difference]: With dead ends: 181 [2020-09-11 12:11:26,534 INFO L226 Difference]: Without dead ends: 115 [2020-09-11 12:11:26,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 12:11:26,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-11 12:11:26,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 96. [2020-09-11 12:11:26,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-11 12:11:26,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 190 transitions. [2020-09-11 12:11:26,538 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 190 transitions. Word has length 15 [2020-09-11 12:11:26,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 12:11:26,539 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 190 transitions. [2020-09-11 12:11:26,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 12:11:26,539 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 190 transitions. [2020-09-11 12:11:26,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 12:11:26,540 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:11:26,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 12:11:26,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 12:11:26,540 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 12:11:26,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:11:26,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1567500834, now seen corresponding path program 1 times [2020-09-11 12:11:26,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:11:26,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064193514] [2020-09-11 12:11:26,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:11:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:11:26,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 12:11:26,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064193514] [2020-09-11 12:11:26,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 12:11:26,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 12:11:26,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630110885] [2020-09-11 12:11:26,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 12:11:26,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 12:11:26,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 12:11:26,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 12:11:26,585 INFO L87 Difference]: Start difference. First operand 96 states and 190 transitions. Second operand 3 states. [2020-09-11 12:11:26,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 12:11:26,606 INFO L93 Difference]: Finished difference Result 98 states and 191 transitions. [2020-09-11 12:11:26,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 12:11:26,607 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-09-11 12:11:26,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 12:11:26,608 INFO L225 Difference]: With dead ends: 98 [2020-09-11 12:11:26,608 INFO L226 Difference]: Without dead ends: 81 [2020-09-11 12:11:26,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 12:11:26,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-11 12:11:26,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-09-11 12:11:26,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-11 12:11:26,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 159 transitions. [2020-09-11 12:11:26,611 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 159 transitions. Word has length 17 [2020-09-11 12:11:26,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 12:11:26,611 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 159 transitions. [2020-09-11 12:11:26,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 12:11:26,612 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 159 transitions. [2020-09-11 12:11:26,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 12:11:26,612 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:11:26,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 12:11:26,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 12:11:26,613 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 12:11:26,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:11:26,613 INFO L82 PathProgramCache]: Analyzing trace with hash 322655978, now seen corresponding path program 1 times [2020-09-11 12:11:26,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:11:26,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769117945] [2020-09-11 12:11:26,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:11:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:11:26,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 12:11:26,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769117945] [2020-09-11 12:11:26,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 12:11:26,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 12:11:26,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234175889] [2020-09-11 12:11:26,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 12:11:26,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 12:11:26,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 12:11:26,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 12:11:26,662 INFO L87 Difference]: Start difference. First operand 81 states and 159 transitions. Second operand 3 states. [2020-09-11 12:11:26,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 12:11:26,668 INFO L93 Difference]: Finished difference Result 56 states and 119 transitions. [2020-09-11 12:11:26,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 12:11:26,668 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-09-11 12:11:26,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 12:11:26,669 INFO L225 Difference]: With dead ends: 56 [2020-09-11 12:11:26,669 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 12:11:26,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 12:11:26,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 12:11:26,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 12:11:26,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 12:11:26,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 12:11:26,671 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-11 12:11:26,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 12:11:26,671 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 12:11:26,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 12:11:26,671 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 12:11:26,671 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 12:11:26,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-11 12:11:26,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 12:11:26 BasicIcfg [2020-09-11 12:11:26,676 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 12:11:26,680 INFO L168 Benchmark]: Toolchain (without parser) took 4633.97 ms. Allocated memory was 140.5 MB in the beginning and 244.3 MB in the end (delta: 103.8 MB). Free memory was 102.1 MB in the beginning and 109.5 MB in the end (delta: -7.4 MB). Peak memory consumption was 96.4 MB. Max. memory is 7.1 GB. [2020-09-11 12:11:26,681 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-11 12:11:26,682 INFO L168 Benchmark]: CACSL2BoogieTranslator took 937.65 ms. Allocated memory was 140.5 MB in the beginning and 205.5 MB in the end (delta: 65.0 MB). Free memory was 101.4 MB in the beginning and 164.4 MB in the end (delta: -63.0 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-09-11 12:11:26,683 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.58 ms. Allocated memory is still 205.5 MB. Free memory was 164.4 MB in the beginning and 161.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-11 12:11:26,684 INFO L168 Benchmark]: Boogie Preprocessor took 33.79 ms. Allocated memory is still 205.5 MB. Free memory was 161.8 MB in the beginning and 160.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-11 12:11:26,684 INFO L168 Benchmark]: RCFGBuilder took 489.38 ms. Allocated memory is still 205.5 MB. Free memory was 160.5 MB in the beginning and 137.6 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-09-11 12:11:26,685 INFO L168 Benchmark]: TraceAbstraction took 3060.78 ms. Allocated memory was 205.5 MB in the beginning and 244.3 MB in the end (delta: 38.8 MB). Free memory was 137.6 MB in the beginning and 109.5 MB in the end (delta: 28.1 MB). Peak memory consumption was 66.9 MB. Max. memory is 7.1 GB. [2020-09-11 12:11:26,690 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 937.65 ms. Allocated memory was 140.5 MB in the beginning and 205.5 MB in the end (delta: 65.0 MB). Free memory was 101.4 MB in the beginning and 164.4 MB in the end (delta: -63.0 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 97.58 ms. Allocated memory is still 205.5 MB. Free memory was 164.4 MB in the beginning and 161.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.79 ms. Allocated memory is still 205.5 MB. Free memory was 161.8 MB in the beginning and 160.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 489.38 ms. Allocated memory is still 205.5 MB. Free memory was 160.5 MB in the beginning and 137.6 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3060.78 ms. Allocated memory was 205.5 MB in the beginning and 244.3 MB in the end (delta: 38.8 MB). Free memory was 137.6 MB in the beginning and 109.5 MB in the end (delta: 28.1 MB). Peak memory consumption was 66.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 72 ProgramPointsBefore, 39 ProgramPointsAfterwards, 92 TransitionsBefore, 51 TransitionsAfterwards, 2992 CoEnabledTransitionPairs, 5 FixpointIterations, 11 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 1205 VarBasedMoverChecksPositive, 82 VarBasedMoverChecksNegative, 50 SemBasedMoverChecksPositive, 61 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 7520 CheckedPairsTotal, 46 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: 2.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 474 SDtfs, 189 SDslu, 211 SDs, 0 SdLazy, 96 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=291occurred 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, 200 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 2461 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...