/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 07:48:52,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 07:48:52,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 07:48:52,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 07:48:52,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 07:48:52,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 07:48:52,207 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 07:48:52,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 07:48:52,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 07:48:52,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 07:48:52,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 07:48:52,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 07:48:52,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 07:48:52,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 07:48:52,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 07:48:52,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 07:48:52,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 07:48:52,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 07:48:52,221 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 07:48:52,223 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 07:48:52,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 07:48:52,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 07:48:52,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 07:48:52,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 07:48:52,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 07:48:52,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 07:48:52,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 07:48:52,231 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 07:48:52,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 07:48:52,233 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 07:48:52,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 07:48:52,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 07:48:52,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 07:48:52,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 07:48:52,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 07:48:52,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 07:48:52,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 07:48:52,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 07:48:52,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 07:48:52,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 07:48:52,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 07:48:52,242 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf [2020-04-18 07:48:52,259 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 07:48:52,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 07:48:52,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 07:48:52,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 07:48:52,261 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 07:48:52,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 07:48:52,261 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 07:48:52,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 07:48:52,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 07:48:52,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 07:48:52,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 07:48:52,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 07:48:52,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 07:48:52,263 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 07:48:52,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 07:48:52,263 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 07:48:52,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 07:48:52,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 07:48:52,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 07:48:52,264 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 07:48:52,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 07:48:52,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 07:48:52,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 07:48:52,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 07:48:52,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 07:48:52,265 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 07:48:52,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 07:48:52,266 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 07:48:52,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 07:48:52,266 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 07:48:52,578 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 07:48:52,598 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 07:48:52,603 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 07:48:52,604 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 07:48:52,605 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 07:48:52,606 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i [2020-04-18 07:48:52,685 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7820f67c2/51d96cae33a045d7a24d95847d1f37bd/FLAG97eca5db2 [2020-04-18 07:48:53,246 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 07:48:53,247 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i [2020-04-18 07:48:53,268 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7820f67c2/51d96cae33a045d7a24d95847d1f37bd/FLAG97eca5db2 [2020-04-18 07:48:53,522 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7820f67c2/51d96cae33a045d7a24d95847d1f37bd [2020-04-18 07:48:53,533 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 07:48:53,557 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 07:48:53,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 07:48:53,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 07:48:53,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 07:48:53,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:48:53" (1/1) ... [2020-04-18 07:48:53,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28cae07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:48:53, skipping insertion in model container [2020-04-18 07:48:53,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:48:53" (1/1) ... [2020-04-18 07:48:53,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 07:48:53,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 07:48:54,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 07:48:54,061 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 07:48:54,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 07:48:54,210 INFO L208 MainTranslator]: Completed translation [2020-04-18 07:48:54,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:48:54 WrapperNode [2020-04-18 07:48:54,211 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 07:48:54,212 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 07:48:54,213 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 07:48:54,213 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 07:48:54,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:48:54" (1/1) ... [2020-04-18 07:48:54,252 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:48:54" (1/1) ... [2020-04-18 07:48:54,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 07:48:54,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 07:48:54,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 07:48:54,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 07:48:54,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:48:54" (1/1) ... [2020-04-18 07:48:54,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:48:54" (1/1) ... [2020-04-18 07:48:54,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:48:54" (1/1) ... [2020-04-18 07:48:54,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:48:54" (1/1) ... [2020-04-18 07:48:54,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:48:54" (1/1) ... [2020-04-18 07:48:54,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:48:54" (1/1) ... [2020-04-18 07:48:54,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:48:54" (1/1) ... [2020-04-18 07:48:54,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 07:48:54,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 07:48:54,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 07:48:54,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 07:48:54,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:48:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 07:48:54,396 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-04-18 07:48:54,396 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-04-18 07:48:54,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 07:48:54,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 07:48:54,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 07:48:54,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 07:48:54,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 07:48:54,398 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 07:48:54,612 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 07:48:54,613 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-04-18 07:48:54,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:48:54 BoogieIcfgContainer [2020-04-18 07:48:54,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 07:48:54,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 07:48:54,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 07:48:54,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 07:48:54,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:48:53" (1/3) ... [2020-04-18 07:48:54,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e5d730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:48:54, skipping insertion in model container [2020-04-18 07:48:54,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:48:54" (2/3) ... [2020-04-18 07:48:54,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e5d730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:48:54, skipping insertion in model container [2020-04-18 07:48:54,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:48:54" (3/3) ... [2020-04-18 07:48:54,626 INFO L109 eAbstractionObserver]: Analyzing ICFG 46_monabsex2_vs.i [2020-04-18 07:48:54,637 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 07:48:54,638 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 07:48:54,645 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 07:48:54,646 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 07:48:54,670 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:54,670 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:54,670 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:54,671 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:54,672 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:54,672 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:54,676 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:54,676 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:54,677 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:54,677 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:54,704 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-18 07:48:54,735 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 07:48:54,736 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 07:48:54,736 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 07:48:54,736 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 07:48:54,736 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 07:48:54,736 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 07:48:54,737 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 07:48:54,737 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 07:48:54,751 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 28 transitions, 61 flow [2020-04-18 07:48:54,754 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 29 places, 28 transitions, 61 flow [2020-04-18 07:48:54,791 INFO L129 PetriNetUnfolder]: 3/36 cut-off events. [2020-04-18 07:48:54,792 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 07:48:54,797 INFO L80 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 36 events. 3/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 18. Up to 4 conditions per place. [2020-04-18 07:48:54,799 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 29 places, 28 transitions, 61 flow [2020-04-18 07:48:54,815 INFO L129 PetriNetUnfolder]: 3/36 cut-off events. [2020-04-18 07:48:54,816 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 07:48:54,817 INFO L80 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 36 events. 3/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 18. Up to 4 conditions per place. [2020-04-18 07:48:54,819 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 180 [2020-04-18 07:48:54,821 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 07:48:55,434 INFO L206 etLargeBlockEncoding]: Checked pairs total: 114 [2020-04-18 07:48:55,435 INFO L214 etLargeBlockEncoding]: Total number of compositions: 22 [2020-04-18 07:48:55,439 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 11 places, 8 transitions, 21 flow [2020-04-18 07:48:55,448 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 19 states. [2020-04-18 07:48:55,451 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-04-18 07:48:55,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-18 07:48:55,459 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:48:55,460 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-04-18 07:48:55,461 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 07:48:55,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:48:55,470 INFO L82 PathProgramCache]: Analyzing trace with hash 4107967, now seen corresponding path program 1 times [2020-04-18 07:48:55,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:48:55,478 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [960506164] [2020-04-18 07:48:55,493 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:48:55,505 INFO L259 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-04-18 07:48:55,507 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2020-04-18 07:48:55,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-18 07:48:55,508 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:48:55,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:48:55,508 INFO L82 PathProgramCache]: Analyzing trace with hash 4107967, now seen corresponding path program 2 times [2020-04-18 07:48:55,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:48:55,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998323299] [2020-04-18 07:48:55,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:48:55,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:48:55,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:48:55,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998323299] [2020-04-18 07:48:55,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:48:55,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 07:48:55,729 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:48:55,731 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:48:55,732 INFO L259 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-04-18 07:48:55,732 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:48:55,740 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:48:55,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:48:55,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:48:55,746 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2020-04-18 07:48:55,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:48:55,751 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2020-04-18 07:48:55,751 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 4 transitions. [2020-04-18 07:48:55,752 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:48:55,752 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [960506164] [2020-04-18 07:48:55,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:48:55,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 07:48:55,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [960506164] [2020-04-18 07:48:55,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 07:48:55,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:48:55,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:48:55,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:48:55,764 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-04-18 07:48:55,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:48:55,777 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2020-04-18 07:48:55,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 07:48:55,779 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-04-18 07:48:55,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:48:55,808 INFO L225 Difference]: With dead ends: 11 [2020-04-18 07:48:55,808 INFO L226 Difference]: Without dead ends: 11 [2020-04-18 07:48:55,810 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:48:55,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-04-18 07:48:55,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-04-18 07:48:55,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-04-18 07:48:55,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-04-18 07:48:55,846 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 4 [2020-04-18 07:48:55,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:48:55,846 INFO L479 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-04-18 07:48:55,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 07:48:55,846 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-04-18 07:48:55,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 07:48:55,847 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:48:55,847 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-04-18 07:48:55,847 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 07:48:55,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:48:55,848 INFO L82 PathProgramCache]: Analyzing trace with hash -347254361, now seen corresponding path program 1 times [2020-04-18 07:48:55,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:48:55,849 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [190374272] [2020-04-18 07:48:55,849 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:48:55,850 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 07:48:55,850 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-04-18 07:48:55,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 07:48:55,851 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:48:55,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:48:55,851 INFO L82 PathProgramCache]: Analyzing trace with hash -347254361, now seen corresponding path program 2 times [2020-04-18 07:48:55,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:48:55,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767764281] [2020-04-18 07:48:55,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:48:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:48:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:48:55,913 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 07:48:55,914 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 07:48:55,914 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 07:48:55,915 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 07:48:55,915 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-04-18 07:48:55,921 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:55,922 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:55,922 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:55,922 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:55,922 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:55,923 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:55,923 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:55,923 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:55,923 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:55,924 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:55,924 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:55,924 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:55,925 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:55,925 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:55,925 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:55,925 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:55,927 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:55,928 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:55,928 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:55,928 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:55,930 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 07:48:55,931 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 07:48:55,931 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 07:48:55,931 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 07:48:55,931 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 07:48:55,931 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 07:48:55,932 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 07:48:55,932 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 07:48:55,932 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 07:48:55,934 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 38 transitions, 88 flow [2020-04-18 07:48:55,934 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 40 places, 38 transitions, 88 flow [2020-04-18 07:48:55,948 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-04-18 07:48:55,948 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-04-18 07:48:55,950 INFO L80 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 55 events. 5/55 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 37. Up to 6 conditions per place. [2020-04-18 07:48:55,952 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 40 places, 38 transitions, 88 flow [2020-04-18 07:48:55,964 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-04-18 07:48:55,964 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-04-18 07:48:55,965 INFO L80 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 55 events. 5/55 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 37. Up to 6 conditions per place. [2020-04-18 07:48:55,967 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 540 [2020-04-18 07:48:55,967 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 07:48:56,626 INFO L206 etLargeBlockEncoding]: Checked pairs total: 798 [2020-04-18 07:48:56,626 INFO L214 etLargeBlockEncoding]: Total number of compositions: 29 [2020-04-18 07:48:56,626 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 44 flow [2020-04-18 07:48:56,635 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 149 states. [2020-04-18 07:48:56,636 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states. [2020-04-18 07:48:56,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-18 07:48:56,636 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:48:56,636 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-04-18 07:48:56,637 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:48:56,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:48:56,637 INFO L82 PathProgramCache]: Analyzing trace with hash 6531966, now seen corresponding path program 1 times [2020-04-18 07:48:56,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:48:56,638 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1507422585] [2020-04-18 07:48:56,638 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:48:56,639 INFO L259 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-04-18 07:48:56,639 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2020-04-18 07:48:56,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-18 07:48:56,640 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:48:56,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:48:56,640 INFO L82 PathProgramCache]: Analyzing trace with hash 6531966, now seen corresponding path program 2 times [2020-04-18 07:48:56,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:48:56,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725675598] [2020-04-18 07:48:56,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:48:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:48:56,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:48:56,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725675598] [2020-04-18 07:48:56,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:48:56,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 07:48:56,718 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:48:56,718 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:48:56,719 INFO L259 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-04-18 07:48:56,720 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:48:56,729 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:48:56,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:48:56,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:48:56,730 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2020-04-18 07:48:56,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:48:56,730 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2020-04-18 07:48:56,731 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 4 transitions. [2020-04-18 07:48:56,731 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:48:56,731 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1507422585] [2020-04-18 07:48:56,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:48:56,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 07:48:56,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1507422585] [2020-04-18 07:48:56,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 07:48:56,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:48:56,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:48:56,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:48:56,734 INFO L87 Difference]: Start difference. First operand 149 states. Second operand 3 states. [2020-04-18 07:48:56,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:48:56,767 INFO L93 Difference]: Finished difference Result 87 states and 182 transitions. [2020-04-18 07:48:56,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 07:48:56,768 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-04-18 07:48:56,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:48:56,771 INFO L225 Difference]: With dead ends: 87 [2020-04-18 07:48:56,771 INFO L226 Difference]: Without dead ends: 87 [2020-04-18 07:48:56,771 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:48:56,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-04-18 07:48:56,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-04-18 07:48:56,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-04-18 07:48:56,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 182 transitions. [2020-04-18 07:48:56,787 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 182 transitions. Word has length 4 [2020-04-18 07:48:56,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:48:56,787 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 182 transitions. [2020-04-18 07:48:56,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 07:48:56,788 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 182 transitions. [2020-04-18 07:48:56,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 07:48:56,789 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:48:56,789 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2020-04-18 07:48:56,789 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:48:56,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:48:56,790 INFO L82 PathProgramCache]: Analyzing trace with hash 83161709, now seen corresponding path program 1 times [2020-04-18 07:48:56,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:48:56,790 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1609646087] [2020-04-18 07:48:56,791 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:48:56,792 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 07:48:56,792 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 07:48:56,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 07:48:56,793 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:48:56,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:48:56,793 INFO L82 PathProgramCache]: Analyzing trace with hash 83161709, now seen corresponding path program 2 times [2020-04-18 07:48:56,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:48:56,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211841935] [2020-04-18 07:48:56,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:48:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:48:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:48:56,825 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 07:48:56,826 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 07:48:56,826 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 07:48:56,829 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 07:48:56,832 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-04-18 07:48:56,844 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:56,844 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:56,844 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:56,845 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:56,846 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:56,846 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:56,847 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:56,847 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:56,847 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:56,848 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:56,848 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:56,848 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:56,849 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:56,849 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:56,849 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:56,849 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:56,850 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:56,850 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:56,850 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:56,851 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:56,851 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:56,851 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:56,863 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:56,863 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:56,863 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:56,864 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:56,866 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:56,866 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:56,866 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:56,866 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:56,868 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 07:48:56,869 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 07:48:56,869 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 07:48:56,869 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 07:48:56,869 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 07:48:56,869 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 07:48:56,869 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 07:48:56,869 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 07:48:56,870 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 07:48:56,896 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 48 transitions, 117 flow [2020-04-18 07:48:56,896 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 51 places, 48 transitions, 117 flow [2020-04-18 07:48:56,926 INFO L129 PetriNetUnfolder]: 7/74 cut-off events. [2020-04-18 07:48:56,926 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-04-18 07:48:56,930 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 74 events. 7/74 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 170 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 59. Up to 8 conditions per place. [2020-04-18 07:48:56,934 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 51 places, 48 transitions, 117 flow [2020-04-18 07:48:56,957 INFO L129 PetriNetUnfolder]: 7/74 cut-off events. [2020-04-18 07:48:56,957 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-04-18 07:48:56,960 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 74 events. 7/74 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 170 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 59. Up to 8 conditions per place. [2020-04-18 07:48:56,962 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1080 [2020-04-18 07:48:56,963 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 07:48:57,712 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2235 [2020-04-18 07:48:57,712 INFO L214 etLargeBlockEncoding]: Total number of compositions: 41 [2020-04-18 07:48:57,712 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 23 transitions, 67 flow [2020-04-18 07:48:57,751 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 749 states. [2020-04-18 07:48:57,752 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states. [2020-04-18 07:48:57,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-18 07:48:57,752 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:48:57,752 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-04-18 07:48:57,753 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:48:57,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:48:57,754 INFO L82 PathProgramCache]: Analyzing trace with hash 9457192, now seen corresponding path program 1 times [2020-04-18 07:48:57,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:48:57,754 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1126891559] [2020-04-18 07:48:57,755 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:48:57,755 INFO L259 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-04-18 07:48:57,755 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2020-04-18 07:48:57,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-18 07:48:57,756 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:48:57,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:48:57,756 INFO L82 PathProgramCache]: Analyzing trace with hash 9457192, now seen corresponding path program 2 times [2020-04-18 07:48:57,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:48:57,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094813519] [2020-04-18 07:48:57,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:48:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:48:57,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:48:57,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094813519] [2020-04-18 07:48:57,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:48:57,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 07:48:57,828 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:48:57,829 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:48:57,830 INFO L259 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-04-18 07:48:57,830 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:48:57,841 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:48:57,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:48:57,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:48:57,842 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2020-04-18 07:48:57,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:48:57,843 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2020-04-18 07:48:57,844 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 4 transitions. [2020-04-18 07:48:57,844 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:48:57,844 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1126891559] [2020-04-18 07:48:57,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:48:57,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 07:48:57,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1126891559] [2020-04-18 07:48:57,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 07:48:57,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:48:57,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:48:57,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:48:57,848 INFO L87 Difference]: Start difference. First operand 749 states. Second operand 3 states. [2020-04-18 07:48:57,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:48:57,918 INFO L93 Difference]: Finished difference Result 421 states and 1176 transitions. [2020-04-18 07:48:57,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 07:48:57,923 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-04-18 07:48:57,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:48:57,938 INFO L225 Difference]: With dead ends: 421 [2020-04-18 07:48:57,938 INFO L226 Difference]: Without dead ends: 421 [2020-04-18 07:48:57,938 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:48:57,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-04-18 07:48:58,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2020-04-18 07:48:58,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-04-18 07:48:58,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 1176 transitions. [2020-04-18 07:48:58,008 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 1176 transitions. Word has length 4 [2020-04-18 07:48:58,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:48:58,009 INFO L479 AbstractCegarLoop]: Abstraction has 421 states and 1176 transitions. [2020-04-18 07:48:58,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 07:48:58,009 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 1176 transitions. [2020-04-18 07:48:58,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 07:48:58,010 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:48:58,010 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:48:58,010 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:48:58,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:48:58,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1631208808, now seen corresponding path program 1 times [2020-04-18 07:48:58,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:48:58,011 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1611102885] [2020-04-18 07:48:58,012 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:48:58,013 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 34 transitions. [2020-04-18 07:48:58,013 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-04-18 07:48:58,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 07:48:58,014 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:48:58,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:48:58,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1631208808, now seen corresponding path program 2 times [2020-04-18 07:48:58,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:48:58,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781418191] [2020-04-18 07:48:58,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:48:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:48:58,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:48:58,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781418191] [2020-04-18 07:48:58,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:48:58,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 07:48:58,065 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:48:58,069 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:48:58,074 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2020-04-18 07:48:58,074 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:48:58,084 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:48:58,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:48:58,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:48:58,087 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2020-04-18 07:48:58,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:48:58,104 INFO L93 Difference]: Finished difference Result 25 states and 35 transitions. [2020-04-18 07:48:58,104 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-04-18 07:48:58,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 07:48:58,104 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 07:48:58,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:48:58,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1579264728, now seen corresponding path program 3 times [2020-04-18 07:48:58,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:48:58,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769309617] [2020-04-18 07:48:58,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:48:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:48:58,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:48:58,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769309617] [2020-04-18 07:48:58,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:48:58,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:48:58,176 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:48:58,177 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:48:58,179 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-04-18 07:48:58,180 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:48:58,198 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 07:48:58,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 07:48:58,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:48:58,199 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2020-04-18 07:48:58,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:48:58,214 INFO L93 Difference]: Finished difference Result 26 states and 35 transitions. [2020-04-18 07:48:58,214 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2020-04-18 07:48:58,215 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:48:58,215 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1611102885] [2020-04-18 07:48:58,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:48:58,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 07:48:58,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1611102885] [2020-04-18 07:48:58,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 07:48:58,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:48:58,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 07:48:58,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:48:58,217 INFO L87 Difference]: Start difference. First operand 421 states and 1176 transitions. Second operand 5 states. [2020-04-18 07:48:58,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:48:58,275 INFO L93 Difference]: Finished difference Result 319 states and 912 transitions. [2020-04-18 07:48:58,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 07:48:58,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-18 07:48:58,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:48:58,280 INFO L225 Difference]: With dead ends: 319 [2020-04-18 07:48:58,280 INFO L226 Difference]: Without dead ends: 319 [2020-04-18 07:48:58,281 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:48:58,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-04-18 07:48:58,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2020-04-18 07:48:58,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-04-18 07:48:58,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 912 transitions. [2020-04-18 07:48:58,300 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 912 transitions. Word has length 10 [2020-04-18 07:48:58,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:48:58,300 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 912 transitions. [2020-04-18 07:48:58,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 07:48:58,301 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 912 transitions. [2020-04-18 07:48:58,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 07:48:58,302 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:48:58,302 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2020-04-18 07:48:58,303 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:48:58,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:48:58,303 INFO L82 PathProgramCache]: Analyzing trace with hash -274399323, now seen corresponding path program 1 times [2020-04-18 07:48:58,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:48:58,303 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [631507144] [2020-04-18 07:48:58,304 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:48:58,304 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 12 transitions. [2020-04-18 07:48:58,305 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-04-18 07:48:58,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 07:48:58,305 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:48:58,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:48:58,306 INFO L82 PathProgramCache]: Analyzing trace with hash -274399323, now seen corresponding path program 2 times [2020-04-18 07:48:58,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:48:58,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386355123] [2020-04-18 07:48:58,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:48:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:48:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:48:58,333 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 07:48:58,336 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 07:48:58,337 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 07:48:58,337 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 07:48:58,337 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-04-18 07:48:58,345 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,346 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,346 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,346 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,347 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,347 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,348 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,348 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,348 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,348 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,349 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,349 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,350 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,350 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,350 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,350 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,351 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,351 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,351 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,353 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,353 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,354 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,354 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,357 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,357 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,357 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,358 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,358 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,360 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,360 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,360 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,360 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,361 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,361 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,361 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,361 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,362 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,362 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,362 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,362 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:48:58,363 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-04-18 07:48:58,364 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 07:48:58,364 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 07:48:58,364 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 07:48:58,364 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 07:48:58,364 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 07:48:58,364 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 07:48:58,364 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 07:48:58,364 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 07:48:58,365 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 58 transitions, 148 flow [2020-04-18 07:48:58,366 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 58 transitions, 148 flow [2020-04-18 07:48:58,377 INFO L129 PetriNetUnfolder]: 9/93 cut-off events. [2020-04-18 07:48:58,377 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-04-18 07:48:58,378 INFO L80 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 93 events. 9/93 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 209 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 83. Up to 10 conditions per place. [2020-04-18 07:48:58,381 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 58 transitions, 148 flow [2020-04-18 07:48:58,392 INFO L129 PetriNetUnfolder]: 9/93 cut-off events. [2020-04-18 07:48:58,392 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-04-18 07:48:58,393 INFO L80 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 93 events. 9/93 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 209 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 83. Up to 10 conditions per place. [2020-04-18 07:48:58,396 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1800 [2020-04-18 07:48:58,396 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 07:48:59,513 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3236 [2020-04-18 07:48:59,513 INFO L214 etLargeBlockEncoding]: Total number of compositions: 47 [2020-04-18 07:48:59,513 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 28 transitions, 88 flow [2020-04-18 07:48:59,760 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 3749 states. [2020-04-18 07:48:59,761 INFO L276 IsEmpty]: Start isEmpty. Operand 3749 states. [2020-04-18 07:48:59,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-18 07:48:59,761 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:48:59,761 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-04-18 07:48:59,762 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 07:48:59,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:48:59,762 INFO L82 PathProgramCache]: Analyzing trace with hash 13119213, now seen corresponding path program 1 times [2020-04-18 07:48:59,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:48:59,763 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2135180607] [2020-04-18 07:48:59,763 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:48:59,763 INFO L259 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-04-18 07:48:59,763 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2020-04-18 07:48:59,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-18 07:48:59,764 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:48:59,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:48:59,764 INFO L82 PathProgramCache]: Analyzing trace with hash 13119213, now seen corresponding path program 2 times [2020-04-18 07:48:59,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:48:59,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350787597] [2020-04-18 07:48:59,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:48:59,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:48:59,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:48:59,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350787597] [2020-04-18 07:48:59,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:48:59,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 07:48:59,786 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:48:59,786 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:48:59,787 INFO L259 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-04-18 07:48:59,787 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:48:59,790 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:48:59,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:48:59,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:48:59,791 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2020-04-18 07:48:59,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:48:59,792 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2020-04-18 07:48:59,792 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 4 transitions. [2020-04-18 07:48:59,793 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:48:59,793 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2135180607] [2020-04-18 07:48:59,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:48:59,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 07:48:59,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2135180607] [2020-04-18 07:48:59,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 07:48:59,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:48:59,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:48:59,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:48:59,795 INFO L87 Difference]: Start difference. First operand 3749 states. Second operand 3 states. [2020-04-18 07:48:59,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:48:59,865 INFO L93 Difference]: Finished difference Result 2133 states and 7537 transitions. [2020-04-18 07:48:59,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 07:48:59,866 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-04-18 07:48:59,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:48:59,936 INFO L225 Difference]: With dead ends: 2133 [2020-04-18 07:48:59,936 INFO L226 Difference]: Without dead ends: 2133 [2020-04-18 07:48:59,937 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:48:59,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2133 states. [2020-04-18 07:49:00,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2133 to 2133. [2020-04-18 07:49:00,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2133 states. [2020-04-18 07:49:00,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2133 states to 2133 states and 7537 transitions. [2020-04-18 07:49:00,068 INFO L78 Accepts]: Start accepts. Automaton has 2133 states and 7537 transitions. Word has length 4 [2020-04-18 07:49:00,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:49:00,069 INFO L479 AbstractCegarLoop]: Abstraction has 2133 states and 7537 transitions. [2020-04-18 07:49:00,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 07:49:00,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2133 states and 7537 transitions. [2020-04-18 07:49:00,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 07:49:00,071 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:49:00,071 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:49:00,071 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 07:49:00,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:49:00,072 INFO L82 PathProgramCache]: Analyzing trace with hash 660270625, now seen corresponding path program 1 times [2020-04-18 07:49:00,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:49:00,072 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [905731813] [2020-04-18 07:49:00,073 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:49:00,074 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 34 transitions. [2020-04-18 07:49:00,074 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-04-18 07:49:00,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 07:49:00,078 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:49:00,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:49:00,078 INFO L82 PathProgramCache]: Analyzing trace with hash 660317185, now seen corresponding path program 2 times [2020-04-18 07:49:00,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:49:00,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126179168] [2020-04-18 07:49:00,079 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:49:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:49:00,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-18 07:49:00,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126179168] [2020-04-18 07:49:00,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:49:00,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:49:00,148 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:49:00,149 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:49:00,152 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-04-18 07:49:00,153 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:49:00,178 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 07:49:00,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 07:49:00,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:49:00,179 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 4 states. [2020-04-18 07:49:00,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:49:00,190 INFO L93 Difference]: Finished difference Result 24 states and 34 transitions. [2020-04-18 07:49:00,190 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2020-04-18 07:49:00,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 07:49:00,190 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 07:49:00,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:49:00,191 INFO L82 PathProgramCache]: Analyzing trace with hash 660270625, now seen corresponding path program 3 times [2020-04-18 07:49:00,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:49:00,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980744000] [2020-04-18 07:49:00,194 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:49:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:49:00,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 07:49:00,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980744000] [2020-04-18 07:49:00,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:49:00,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 07:49:00,244 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:49:00,245 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:49:00,246 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2020-04-18 07:49:00,246 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:49:00,267 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 07:49:00,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:49:00,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:49:00,268 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 3 states. [2020-04-18 07:49:00,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:49:00,275 INFO L93 Difference]: Finished difference Result 26 states and 35 transitions. [2020-04-18 07:49:00,275 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2020-04-18 07:49:00,276 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:49:00,276 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [905731813] [2020-04-18 07:49:00,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:49:00,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 07:49:00,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [905731813] [2020-04-18 07:49:00,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 07:49:00,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:49:00,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 07:49:00,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:49:00,278 INFO L87 Difference]: Start difference. First operand 2133 states and 7537 transitions. Second operand 5 states. [2020-04-18 07:49:00,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:49:00,351 INFO L93 Difference]: Finished difference Result 1279 states and 4608 transitions. [2020-04-18 07:49:00,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 07:49:00,352 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-18 07:49:00,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:49:00,363 INFO L225 Difference]: With dead ends: 1279 [2020-04-18 07:49:00,364 INFO L226 Difference]: Without dead ends: 1279 [2020-04-18 07:49:00,364 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:49:00,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2020-04-18 07:49:00,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1279. [2020-04-18 07:49:00,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2020-04-18 07:49:00,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 4608 transitions. [2020-04-18 07:49:00,414 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 4608 transitions. Word has length 10 [2020-04-18 07:49:00,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:49:00,414 INFO L479 AbstractCegarLoop]: Abstraction has 1279 states and 4608 transitions. [2020-04-18 07:49:00,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 07:49:00,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 4608 transitions. [2020-04-18 07:49:00,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 07:49:00,416 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:49:00,416 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2020-04-18 07:49:00,417 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 07:49:00,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:49:00,417 INFO L82 PathProgramCache]: Analyzing trace with hash -888053295, now seen corresponding path program 1 times [2020-04-18 07:49:00,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:49:00,418 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [222711785] [2020-04-18 07:49:00,418 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:49:00,419 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2020-04-18 07:49:00,419 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 07:49:00,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 07:49:00,420 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:49:00,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:49:00,420 INFO L82 PathProgramCache]: Analyzing trace with hash -888053295, now seen corresponding path program 2 times [2020-04-18 07:49:00,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:49:00,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894309894] [2020-04-18 07:49:00,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:49:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:49:00,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:49:00,442 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 07:49:00,443 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 07:49:00,443 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 07:49:00,443 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 07:49:00,444 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-04-18 07:49:00,452 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,452 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,452 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,452 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,453 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,453 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,453 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,453 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,453 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,453 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,454 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,454 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,454 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,454 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,454 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,455 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,455 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,455 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,455 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,455 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,455 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,456 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,456 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,456 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,456 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,456 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,457 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,457 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,457 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,457 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,458 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,458 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,458 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,458 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,460 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,461 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,461 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,461 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,463 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,464 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,464 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,464 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,466 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,466 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,466 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,467 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,468 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,469 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,469 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,469 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:00,471 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-04-18 07:49:00,471 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 07:49:00,471 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 07:49:00,471 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 07:49:00,471 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 07:49:00,471 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 07:49:00,472 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 07:49:00,472 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 07:49:00,472 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 07:49:00,473 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 68 transitions, 181 flow [2020-04-18 07:49:00,473 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 73 places, 68 transitions, 181 flow [2020-04-18 07:49:00,487 INFO L129 PetriNetUnfolder]: 11/112 cut-off events. [2020-04-18 07:49:00,487 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-04-18 07:49:00,489 INFO L80 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 112 events. 11/112 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 265 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 109. Up to 12 conditions per place. [2020-04-18 07:49:00,493 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 73 places, 68 transitions, 181 flow [2020-04-18 07:49:00,504 INFO L129 PetriNetUnfolder]: 11/112 cut-off events. [2020-04-18 07:49:00,504 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-04-18 07:49:00,506 INFO L80 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 112 events. 11/112 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 265 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 109. Up to 12 conditions per place. [2020-04-18 07:49:00,509 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2700 [2020-04-18 07:49:00,510 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 07:49:02,196 INFO L206 etLargeBlockEncoding]: Checked pairs total: 5883 [2020-04-18 07:49:02,197 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-04-18 07:49:02,197 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 35 transitions, 115 flow [2020-04-18 07:49:04,202 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18749 states. [2020-04-18 07:49:04,202 INFO L276 IsEmpty]: Start isEmpty. Operand 18749 states. [2020-04-18 07:49:04,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-18 07:49:04,203 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:49:04,203 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-04-18 07:49:04,203 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:49:04,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:49:04,203 INFO L82 PathProgramCache]: Analyzing trace with hash 17094107, now seen corresponding path program 1 times [2020-04-18 07:49:04,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:49:04,204 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2116725240] [2020-04-18 07:49:04,204 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:49:04,204 INFO L259 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-04-18 07:49:04,204 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2020-04-18 07:49:04,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-18 07:49:04,205 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:49:04,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:49:04,205 INFO L82 PathProgramCache]: Analyzing trace with hash 17094107, now seen corresponding path program 2 times [2020-04-18 07:49:04,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:49:04,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001254318] [2020-04-18 07:49:04,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:49:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:49:04,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:49:04,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001254318] [2020-04-18 07:49:04,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:49:04,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 07:49:04,227 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:49:04,228 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:49:04,228 INFO L259 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-04-18 07:49:04,228 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:49:04,244 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:49:04,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:49:04,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:49:04,245 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2020-04-18 07:49:04,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:49:04,246 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2020-04-18 07:49:04,246 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 4 transitions. [2020-04-18 07:49:04,246 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:49:04,246 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2116725240] [2020-04-18 07:49:04,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:49:04,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 07:49:04,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2116725240] [2020-04-18 07:49:04,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 07:49:04,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:49:04,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:49:04,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:49:04,248 INFO L87 Difference]: Start difference. First operand 18749 states. Second operand 3 states. [2020-04-18 07:49:04,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:49:04,399 INFO L93 Difference]: Finished difference Result 11059 states and 47649 transitions. [2020-04-18 07:49:04,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 07:49:04,401 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-04-18 07:49:04,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:49:04,523 INFO L225 Difference]: With dead ends: 11059 [2020-04-18 07:49:04,523 INFO L226 Difference]: Without dead ends: 11059 [2020-04-18 07:49:04,523 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:49:05,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11059 states. [2020-04-18 07:49:05,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11059 to 11059. [2020-04-18 07:49:05,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11059 states. [2020-04-18 07:49:05,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11059 states to 11059 states and 47649 transitions. [2020-04-18 07:49:05,857 INFO L78 Accepts]: Start accepts. Automaton has 11059 states and 47649 transitions. Word has length 4 [2020-04-18 07:49:05,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:49:05,857 INFO L479 AbstractCegarLoop]: Abstraction has 11059 states and 47649 transitions. [2020-04-18 07:49:05,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 07:49:05,857 INFO L276 IsEmpty]: Start isEmpty. Operand 11059 states and 47649 transitions. [2020-04-18 07:49:05,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 07:49:05,858 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:49:05,858 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:49:05,858 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:49:05,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:49:05,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1998237469, now seen corresponding path program 1 times [2020-04-18 07:49:05,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:49:05,859 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2058737] [2020-04-18 07:49:05,860 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:49:05,860 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 34 transitions. [2020-04-18 07:49:05,861 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-04-18 07:49:05,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 07:49:05,861 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:49:05,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:49:05,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1998237469, now seen corresponding path program 2 times [2020-04-18 07:49:05,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:49:05,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167462509] [2020-04-18 07:49:05,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:49:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:49:05,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-18 07:49:05,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167462509] [2020-04-18 07:49:05,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:49:05,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 07:49:05,898 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:49:05,899 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:49:05,899 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2020-04-18 07:49:05,899 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:49:05,902 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 07:49:05,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:49:05,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:49:05,903 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2020-04-18 07:49:05,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:49:05,907 INFO L93 Difference]: Finished difference Result 25 states and 35 transitions. [2020-04-18 07:49:05,907 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-04-18 07:49:05,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 07:49:05,907 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 07:49:05,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:49:05,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1999221469, now seen corresponding path program 3 times [2020-04-18 07:49:05,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:49:05,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953374134] [2020-04-18 07:49:05,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:49:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:49:05,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:49:05,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953374134] [2020-04-18 07:49:05,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:49:05,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:49:05,945 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:49:05,946 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:49:05,947 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-04-18 07:49:05,947 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:49:05,967 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 07:49:05,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 07:49:05,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:49:05,967 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2020-04-18 07:49:05,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:49:05,980 INFO L93 Difference]: Finished difference Result 26 states and 35 transitions. [2020-04-18 07:49:05,980 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2020-04-18 07:49:05,980 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:49:05,981 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2058737] [2020-04-18 07:49:05,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:49:05,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 07:49:05,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2058737] [2020-04-18 07:49:05,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 07:49:05,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:49:05,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 07:49:05,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:49:05,982 INFO L87 Difference]: Start difference. First operand 11059 states and 47649 transitions. Second operand 5 states. [2020-04-18 07:49:06,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:49:06,204 INFO L93 Difference]: Finished difference Result 5119 states and 22272 transitions. [2020-04-18 07:49:06,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 07:49:06,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-18 07:49:06,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:49:06,232 INFO L225 Difference]: With dead ends: 5119 [2020-04-18 07:49:06,232 INFO L226 Difference]: Without dead ends: 5119 [2020-04-18 07:49:06,232 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:49:06,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5119 states. [2020-04-18 07:49:06,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5119 to 5119. [2020-04-18 07:49:06,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5119 states. [2020-04-18 07:49:06,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5119 states to 5119 states and 22272 transitions. [2020-04-18 07:49:06,468 INFO L78 Accepts]: Start accepts. Automaton has 5119 states and 22272 transitions. Word has length 10 [2020-04-18 07:49:06,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:49:06,468 INFO L479 AbstractCegarLoop]: Abstraction has 5119 states and 22272 transitions. [2020-04-18 07:49:06,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 07:49:06,469 INFO L276 IsEmpty]: Start isEmpty. Operand 5119 states and 22272 transitions. [2020-04-18 07:49:06,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 07:49:06,471 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:49:06,472 INFO L425 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:49:06,472 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:49:06,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:49:06,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1270266075, now seen corresponding path program 1 times [2020-04-18 07:49:06,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:49:06,473 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [687666331] [2020-04-18 07:49:06,473 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:49:06,474 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 18 transitions. [2020-04-18 07:49:06,474 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-04-18 07:49:06,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 07:49:06,475 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:49:06,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:49:06,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1270266075, now seen corresponding path program 2 times [2020-04-18 07:49:06,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:49:06,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213195564] [2020-04-18 07:49:06,476 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:49:06,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:49:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:49:06,496 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 07:49:06,497 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 07:49:06,497 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 07:49:06,497 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 07:49:06,498 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-04-18 07:49:06,505 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,505 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,505 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,505 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,506 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,506 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,506 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,506 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,506 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,506 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,507 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,507 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,507 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,507 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,507 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,507 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,507 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,508 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,508 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,508 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,508 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,508 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,508 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,509 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,509 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,509 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,509 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,509 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,509 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,509 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,510 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,510 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,510 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,510 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,510 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,510 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,511 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,511 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,511 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,511 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,513 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,513 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,513 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,513 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,514 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,515 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,515 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,515 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,516 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,516 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,517 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,517 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,518 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,518 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,518 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,518 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,519 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,520 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,520 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,520 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:06,521 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-04-18 07:49:06,521 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 07:49:06,521 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 07:49:06,522 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 07:49:06,522 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 07:49:06,522 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 07:49:06,522 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 07:49:06,522 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 07:49:06,522 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 07:49:06,523 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 78 transitions, 216 flow [2020-04-18 07:49:06,523 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 78 transitions, 216 flow [2020-04-18 07:49:06,535 INFO L129 PetriNetUnfolder]: 13/131 cut-off events. [2020-04-18 07:49:06,536 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-04-18 07:49:06,539 INFO L80 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 131 events. 13/131 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 328 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 136. Up to 14 conditions per place. [2020-04-18 07:49:06,544 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 78 transitions, 216 flow [2020-04-18 07:49:06,556 INFO L129 PetriNetUnfolder]: 13/131 cut-off events. [2020-04-18 07:49:06,556 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-04-18 07:49:06,557 INFO L80 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 131 events. 13/131 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 328 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 136. Up to 14 conditions per place. [2020-04-18 07:49:06,562 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3780 [2020-04-18 07:49:06,562 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 07:49:08,308 INFO L206 etLargeBlockEncoding]: Checked pairs total: 6919 [2020-04-18 07:49:08,308 INFO L214 etLargeBlockEncoding]: Total number of compositions: 63 [2020-04-18 07:49:08,309 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 39 transitions, 138 flow [2020-04-18 07:49:43,551 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 93749 states. [2020-04-18 07:49:43,552 INFO L276 IsEmpty]: Start isEmpty. Operand 93749 states. [2020-04-18 07:49:43,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-18 07:49:43,552 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:49:43,552 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-04-18 07:49:43,552 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:49:43,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:49:43,553 INFO L82 PathProgramCache]: Analyzing trace with hash 22149830, now seen corresponding path program 1 times [2020-04-18 07:49:43,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:49:43,553 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [171422462] [2020-04-18 07:49:43,554 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:49:43,554 INFO L259 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-04-18 07:49:43,554 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2020-04-18 07:49:43,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-18 07:49:43,554 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:49:43,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:49:43,555 INFO L82 PathProgramCache]: Analyzing trace with hash 22149830, now seen corresponding path program 2 times [2020-04-18 07:49:43,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:49:43,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343491822] [2020-04-18 07:49:43,556 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:49:43,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:49:43,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:49:43,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343491822] [2020-04-18 07:49:43,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:49:43,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 07:49:43,591 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:49:43,591 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:49:43,591 INFO L259 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-04-18 07:49:43,591 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:49:43,598 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:49:43,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:49:43,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:49:43,599 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2020-04-18 07:49:43,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:49:43,599 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2020-04-18 07:49:43,599 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 4 transitions. [2020-04-18 07:49:43,599 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:49:43,600 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [171422462] [2020-04-18 07:49:43,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:49:43,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 07:49:43,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [171422462] [2020-04-18 07:49:43,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 07:49:43,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:49:43,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:49:43,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:49:43,601 INFO L87 Difference]: Start difference. First operand 93749 states. Second operand 3 states. [2020-04-18 07:49:45,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:49:45,744 INFO L93 Difference]: Finished difference Result 57747 states and 295020 transitions. [2020-04-18 07:49:45,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 07:49:45,744 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-04-18 07:49:45,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:49:46,117 INFO L225 Difference]: With dead ends: 57747 [2020-04-18 07:49:46,117 INFO L226 Difference]: Without dead ends: 57747 [2020-04-18 07:49:46,118 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:49:52,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57747 states. [2020-04-18 07:49:53,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57747 to 57747. [2020-04-18 07:49:53,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57747 states. [2020-04-18 07:49:54,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57747 states to 57747 states and 295020 transitions. [2020-04-18 07:49:54,105 INFO L78 Accepts]: Start accepts. Automaton has 57747 states and 295020 transitions. Word has length 4 [2020-04-18 07:49:54,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:49:54,105 INFO L479 AbstractCegarLoop]: Abstraction has 57747 states and 295020 transitions. [2020-04-18 07:49:54,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 07:49:54,106 INFO L276 IsEmpty]: Start isEmpty. Operand 57747 states and 295020 transitions. [2020-04-18 07:49:54,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 07:49:54,106 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:49:54,106 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:49:54,106 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:49:54,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:49:54,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1106760830, now seen corresponding path program 1 times [2020-04-18 07:49:54,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:49:54,107 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [499431117] [2020-04-18 07:49:54,108 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:49:54,108 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 34 transitions. [2020-04-18 07:49:54,108 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-04-18 07:49:54,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 07:49:54,109 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:49:54,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:49:54,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1106760830, now seen corresponding path program 2 times [2020-04-18 07:49:54,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:49:54,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825555762] [2020-04-18 07:49:54,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:49:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:49:54,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:49:54,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825555762] [2020-04-18 07:49:54,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:49:54,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 07:49:54,134 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:49:54,135 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:49:54,136 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2020-04-18 07:49:54,136 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:49:54,139 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:49:54,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:49:54,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:49:54,139 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2020-04-18 07:49:54,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:49:54,143 INFO L93 Difference]: Finished difference Result 25 states and 35 transitions. [2020-04-18 07:49:54,143 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-04-18 07:49:54,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 07:49:54,143 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 07:49:54,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:49:54,144 INFO L82 PathProgramCache]: Analyzing trace with hash 2100830786, now seen corresponding path program 3 times [2020-04-18 07:49:54,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:49:54,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087236947] [2020-04-18 07:49:54,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:49:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:49:54,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:49:54,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087236947] [2020-04-18 07:49:54,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:49:54,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:49:54,184 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:49:54,185 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:49:54,187 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-04-18 07:49:54,187 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:49:54,207 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 07:49:54,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 07:49:54,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:49:54,208 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2020-04-18 07:49:54,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:49:54,216 INFO L93 Difference]: Finished difference Result 26 states and 35 transitions. [2020-04-18 07:49:54,216 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2020-04-18 07:49:54,217 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:49:54,217 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [499431117] [2020-04-18 07:49:54,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:49:54,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 07:49:54,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [499431117] [2020-04-18 07:49:54,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 07:49:54,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:49:54,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 07:49:54,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:49:54,219 INFO L87 Difference]: Start difference. First operand 57747 states and 295020 transitions. Second operand 5 states. [2020-04-18 07:49:54,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:49:54,428 INFO L93 Difference]: Finished difference Result 20479 states and 104448 transitions. [2020-04-18 07:49:54,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 07:49:54,428 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-18 07:49:54,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:49:54,516 INFO L225 Difference]: With dead ends: 20479 [2020-04-18 07:49:54,517 INFO L226 Difference]: Without dead ends: 20479 [2020-04-18 07:49:54,517 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:49:57,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20479 states. [2020-04-18 07:49:58,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20479 to 20479. [2020-04-18 07:49:58,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20479 states. [2020-04-18 07:49:58,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20479 states to 20479 states and 104448 transitions. [2020-04-18 07:49:58,387 INFO L78 Accepts]: Start accepts. Automaton has 20479 states and 104448 transitions. Word has length 10 [2020-04-18 07:49:58,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:49:58,388 INFO L479 AbstractCegarLoop]: Abstraction has 20479 states and 104448 transitions. [2020-04-18 07:49:58,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 07:49:58,388 INFO L276 IsEmpty]: Start isEmpty. Operand 20479 states and 104448 transitions. [2020-04-18 07:49:58,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 07:49:58,394 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:49:58,395 INFO L425 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:49:58,395 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:49:58,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:49:58,395 INFO L82 PathProgramCache]: Analyzing trace with hash -2077234539, now seen corresponding path program 1 times [2020-04-18 07:49:58,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:49:58,395 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1211550086] [2020-04-18 07:49:58,396 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:49:58,396 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-04-18 07:49:58,397 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-04-18 07:49:58,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 07:49:58,397 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:49:58,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:49:58,397 INFO L82 PathProgramCache]: Analyzing trace with hash -2077234539, now seen corresponding path program 2 times [2020-04-18 07:49:58,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:49:58,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564740236] [2020-04-18 07:49:58,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:49:58,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:49:58,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:49:58,416 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 07:49:58,417 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 07:49:58,417 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 07:49:58,417 WARN L363 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 07:49:58,418 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2020-04-18 07:49:58,426 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,426 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,426 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,426 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,426 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,427 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,427 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,427 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,427 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,427 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,427 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,427 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,428 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,428 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,428 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,428 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,428 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,428 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,429 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,429 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,429 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,429 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,429 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,429 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,430 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,430 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,430 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,430 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,430 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,430 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,430 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,431 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,431 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,431 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,431 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,431 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,431 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,432 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,432 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,432 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,432 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,432 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,432 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,433 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,433 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,433 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,444 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,445 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,445 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,445 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,446 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,446 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,447 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,447 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,448 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,448 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,448 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,448 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,449 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,450 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,450 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,450 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,451 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,451 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,451 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,452 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,453 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,453 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,453 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,453 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:49:58,454 INFO L251 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-04-18 07:49:58,454 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 07:49:58,454 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 07:49:58,455 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 07:49:58,455 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 07:49:58,455 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 07:49:58,455 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 07:49:58,455 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 07:49:58,455 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 07:49:58,456 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 88 transitions, 253 flow [2020-04-18 07:49:58,456 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 95 places, 88 transitions, 253 flow [2020-04-18 07:49:58,471 INFO L129 PetriNetUnfolder]: 15/150 cut-off events. [2020-04-18 07:49:58,471 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2020-04-18 07:49:58,472 INFO L80 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 150 events. 15/150 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 367 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 164. Up to 16 conditions per place. [2020-04-18 07:49:58,479 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 95 places, 88 transitions, 253 flow [2020-04-18 07:49:58,495 INFO L129 PetriNetUnfolder]: 15/150 cut-off events. [2020-04-18 07:49:58,495 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2020-04-18 07:49:58,496 INFO L80 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 150 events. 15/150 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 367 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 164. Up to 16 conditions per place. [2020-04-18 07:49:58,503 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 5040 [2020-04-18 07:49:58,503 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 07:49:59,983 INFO L206 etLargeBlockEncoding]: Checked pairs total: 8752 [2020-04-18 07:49:59,984 INFO L214 etLargeBlockEncoding]: Total number of compositions: 68 [2020-04-18 07:49:59,984 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 43 transitions, 163 flow Received shutdown request... [2020-04-18 07:53:11,205 WARN L544 AbstractCegarLoop]: Verification canceled [2020-04-18 07:53:11,208 WARN L228 ceAbstractionStarter]: Timeout [2020-04-18 07:53:11,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:53:11 BasicIcfg [2020-04-18 07:53:11,208 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 07:53:11,211 INFO L168 Benchmark]: Toolchain (without parser) took 257676.01 ms. Allocated memory was 143.1 MB in the beginning and 2.5 GB in the end (delta: 2.4 GB). Free memory was 102.0 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2020-04-18 07:53:11,211 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 143.1 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 07:53:11,212 INFO L168 Benchmark]: CACSL2BoogieTranslator took 653.24 ms. Allocated memory was 143.1 MB in the beginning and 202.4 MB in the end (delta: 59.2 MB). Free memory was 100.1 MB in the beginning and 162.9 MB in the end (delta: -62.8 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-04-18 07:53:11,213 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.53 ms. Allocated memory is still 202.4 MB. Free memory was 162.9 MB in the beginning and 160.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 07:53:11,213 INFO L168 Benchmark]: Boogie Preprocessor took 51.32 ms. Allocated memory is still 202.4 MB. Free memory was 160.9 MB in the beginning and 159.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 07:53:11,214 INFO L168 Benchmark]: RCFGBuilder took 287.30 ms. Allocated memory is still 202.4 MB. Free memory was 159.5 MB in the beginning and 144.6 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2020-04-18 07:53:11,214 INFO L168 Benchmark]: TraceAbstraction took 256590.12 ms. Allocated memory was 202.4 MB in the beginning and 2.5 GB in the end (delta: 2.3 GB). Free memory was 143.9 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2020-04-18 07:53:11,217 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 143.1 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 653.24 ms. Allocated memory was 143.1 MB in the beginning and 202.4 MB in the end (delta: 59.2 MB). Free memory was 100.1 MB in the beginning and 162.9 MB in the end (delta: -62.8 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 65.53 ms. Allocated memory is still 202.4 MB. Free memory was 162.9 MB in the beginning and 160.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.32 ms. Allocated memory is still 202.4 MB. Free memory was 160.9 MB in the beginning and 159.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 287.30 ms. Allocated memory is still 202.4 MB. Free memory was 159.5 MB in the beginning and 144.6 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 256590.12 ms. Allocated memory was 202.4 MB in the beginning and 2.5 GB in the end (delta: 2.3 GB). Free memory was 143.9 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.6s, 29 ProgramPointsBefore, 11 ProgramPointsAfterwards, 28 TransitionsBefore, 8 TransitionsAfterwards, 180 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 83 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 114 CheckedPairsTotal, 22 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.6s, 40 ProgramPointsBefore, 20 ProgramPointsAfterwards, 38 TransitionsBefore, 16 TransitionsAfterwards, 540 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 303 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 16 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 798 CheckedPairsTotal, 29 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.8s, 51 ProgramPointsBefore, 27 ProgramPointsAfterwards, 48 TransitionsBefore, 23 TransitionsAfterwards, 1080 CoEnabledTransitionPairs, 6 FixpointIterations, 7 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 585 VarBasedMoverChecksPositive, 78 VarBasedMoverChecksNegative, 54 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2235 CheckedPairsTotal, 41 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.1s, 62 ProgramPointsBefore, 34 ProgramPointsAfterwards, 58 TransitionsBefore, 28 TransitionsAfterwards, 1800 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 2 ChoiceCompositions, 949 VarBasedMoverChecksPositive, 166 VarBasedMoverChecksNegative, 165 SemBasedMoverChecksPositive, 40 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 0 MoverChecksTotal, 3236 CheckedPairsTotal, 47 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 73 ProgramPointsBefore, 41 ProgramPointsAfterwards, 68 TransitionsBefore, 35 TransitionsAfterwards, 2700 CoEnabledTransitionPairs, 6 FixpointIterations, 7 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 1 ChoiceCompositions, 1458 VarBasedMoverChecksPositive, 368 VarBasedMoverChecksNegative, 402 SemBasedMoverChecksPositive, 49 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 1.0s, 0 MoverChecksTotal, 5883 CheckedPairsTotal, 59 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 84 ProgramPointsBefore, 48 ProgramPointsAfterwards, 78 TransitionsBefore, 39 TransitionsAfterwards, 3780 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 3 ChoiceCompositions, 1899 VarBasedMoverChecksPositive, 353 VarBasedMoverChecksNegative, 320 SemBasedMoverChecksPositive, 70 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.9s, 0 MoverChecksTotal, 6919 CheckedPairsTotal, 63 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 95 ProgramPointsBefore, 55 ProgramPointsAfterwards, 88 TransitionsBefore, 43 TransitionsAfterwards, 5040 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 5 ChoiceCompositions, 2400 VarBasedMoverChecksPositive, 345 VarBasedMoverChecksNegative, 306 SemBasedMoverChecksPositive, 70 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.7s, 0 MoverChecksTotal, 8752 CheckedPairsTotal, 68 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 677]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 677). Cancelled while BasicCegarLoop was constructing initial abstraction,while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 55 places, 43 transitions, 163 flow. Already constructed 272417 states. Currently 64165 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 1 error locations. Started 7 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 256.3s, OverallIterations: 16, TraceHistogramMax: 7, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 237.2s, HoareTripleCheckerStatistics: 219 SDtfs, 152 SDslu, 139 SDs, 0 SdLazy, 234 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93749occurred 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: 13.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 could not prove your program: Timeout Completed graceful shutdown