/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-ext/13_unverif.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 04:48:11,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 04:48:11,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 04:48:11,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 04:48:11,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 04:48:11,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 04:48:11,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 04:48:11,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 04:48:11,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 04:48:11,195 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 04:48:11,197 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 04:48:11,199 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 04:48:11,199 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 04:48:11,201 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 04:48:11,203 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 04:48:11,204 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 04:48:11,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 04:48:11,207 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 04:48:11,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 04:48:11,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 04:48:11,217 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 04:48:11,222 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 04:48:11,223 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 04:48:11,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 04:48:11,226 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-27 04:48:11,226 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-27 04:48:11,226 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-27 04:48:11,228 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-27 04:48:11,229 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-27 04:48:11,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-27 04:48:11,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 04:48:11,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 04:48:11,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 04:48:11,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 04:48:11,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 04:48:11,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 04:48:11,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 04:48:11,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 04:48:11,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 04:48:11,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 04:48:11,237 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 04:48:11,238 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf [2019-12-27 04:48:11,271 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 04:48:11,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 04:48:11,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 04:48:11,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 04:48:11,275 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 04:48:11,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 04:48:11,276 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 04:48:11,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 04:48:11,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 04:48:11,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 04:48:11,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 04:48:11,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 04:48:11,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 04:48:11,277 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 04:48:11,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 04:48:11,277 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 04:48:11,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 04:48:11,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 04:48:11,280 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 04:48:11,280 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 04:48:11,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 04:48:11,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 04:48:11,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 04:48:11,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 04:48:11,281 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 04:48:11,282 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 04:48:11,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 04:48:11,282 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-27 04:48:11,282 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 04:48:11,282 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 04:48:11,589 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 04:48:11,601 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 04:48:11,604 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 04:48:11,606 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 04:48:11,606 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 04:48:11,607 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/13_unverif.i [2019-12-27 04:48:11,661 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f785b8d4/894265c730e7443bb9b64602bc77062d/FLAGb017b2aac [2019-12-27 04:48:12,252 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 04:48:12,253 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/13_unverif.i [2019-12-27 04:48:12,267 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f785b8d4/894265c730e7443bb9b64602bc77062d/FLAGb017b2aac [2019-12-27 04:48:12,533 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f785b8d4/894265c730e7443bb9b64602bc77062d [2019-12-27 04:48:12,543 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 04:48:12,545 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 04:48:12,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 04:48:12,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 04:48:12,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 04:48:12,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 04:48:12" (1/1) ... [2019-12-27 04:48:12,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79cd3e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:48:12, skipping insertion in model container [2019-12-27 04:48:12,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 04:48:12" (1/1) ... [2019-12-27 04:48:12,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 04:48:12,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 04:48:13,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 04:48:13,080 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 04:48:13,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 04:48:13,220 INFO L208 MainTranslator]: Completed translation [2019-12-27 04:48:13,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:48:13 WrapperNode [2019-12-27 04:48:13,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 04:48:13,222 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 04:48:13,222 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 04:48:13,222 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 04:48:13,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:48:13" (1/1) ... [2019-12-27 04:48:13,247 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:48:13" (1/1) ... [2019-12-27 04:48:13,268 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 04:48:13,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 04:48:13,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 04:48:13,269 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 04:48:13,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:48:13" (1/1) ... [2019-12-27 04:48:13,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:48:13" (1/1) ... [2019-12-27 04:48:13,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:48:13" (1/1) ... [2019-12-27 04:48:13,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:48:13" (1/1) ... [2019-12-27 04:48:13,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:48:13" (1/1) ... [2019-12-27 04:48:13,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:48:13" (1/1) ... [2019-12-27 04:48:13,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:48:13" (1/1) ... [2019-12-27 04:48:13,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 04:48:13,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 04:48:13,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 04:48:13,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 04:48:13,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:48:13" (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 [2019-12-27 04:48:13,356 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-12-27 04:48:13,356 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-12-27 04:48:13,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 04:48:13,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 04:48:13,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 04:48:13,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 04:48:13,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 04:48:13,359 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-27 04:48:13,522 INFO L1525 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_inc_r_returnLabel [2019-12-27 04:48:13,685 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 04:48:13,686 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-27 04:48:13,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 04:48:13 BoogieIcfgContainer [2019-12-27 04:48:13,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 04:48:13,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 04:48:13,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 04:48:13,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 04:48:13,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 04:48:12" (1/3) ... [2019-12-27 04:48:13,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f3bcc17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 04:48:13, skipping insertion in model container [2019-12-27 04:48:13,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:48:13" (2/3) ... [2019-12-27 04:48:13,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f3bcc17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 04:48:13, skipping insertion in model container [2019-12-27 04:48:13,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 04:48:13" (3/3) ... [2019-12-27 04:48:13,696 INFO L109 eAbstractionObserver]: Analyzing ICFG 13_unverif.i [2019-12-27 04:48:13,705 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 04:48:13,705 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 04:48:13,711 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-27 04:48:13,712 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 04:48:13,734 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:13,735 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:13,741 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:13,741 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:13,742 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:13,742 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:13,743 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:13,743 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:13,743 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:13,744 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:13,744 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:13,748 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:13,749 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:13,749 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:13,749 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:13,750 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:13,767 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-27 04:48:13,782 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 04:48:13,783 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 04:48:13,783 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 04:48:13,783 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 04:48:13,783 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 04:48:13,783 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 04:48:13,783 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 04:48:13,784 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 04:48:13,793 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 31 transitions [2019-12-27 04:48:13,795 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 31 places, 31 transitions [2019-12-27 04:48:13,825 INFO L132 PetriNetUnfolder]: 4/39 cut-off events. [2019-12-27 04:48:13,825 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 04:48:13,831 INFO L76 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 39 events. 4/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 63 event pairs. 0/32 useless extension candidates. Maximal degree in co-relation 21. Up to 4 conditions per place. [2019-12-27 04:48:13,834 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 31 places, 31 transitions [2019-12-27 04:48:13,853 INFO L132 PetriNetUnfolder]: 4/39 cut-off events. [2019-12-27 04:48:13,854 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 04:48:13,855 INFO L76 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 39 events. 4/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 63 event pairs. 0/32 useless extension candidates. Maximal degree in co-relation 21. Up to 4 conditions per place. [2019-12-27 04:48:13,857 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 240 [2019-12-27 04:48:13,861 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-27 04:48:14,544 INFO L206 etLargeBlockEncoding]: Checked pairs total: 169 [2019-12-27 04:48:14,544 INFO L214 etLargeBlockEncoding]: Total number of compositions: 27 [2019-12-27 04:48:14,548 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 10 places, 10 transitions [2019-12-27 04:48:14,554 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 24 states. [2019-12-27 04:48:14,555 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-12-27 04:48:14,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-27 04:48:14,561 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:48:14,561 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-27 04:48:14,562 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-27 04:48:14,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:48:14,567 INFO L82 PathProgramCache]: Analyzing trace with hash 144192241, now seen corresponding path program 1 times [2019-12-27 04:48:14,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:48:14,575 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595357610] [2019-12-27 04:48:14,575 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:48:14,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:48:14,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:48:14,849 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595357610] [2019-12-27 04:48:14,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:48:14,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 04:48:14,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489704896] [2019-12-27 04:48:14,856 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 04:48:14,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:48:14,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 04:48:14,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:48:14,875 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2019-12-27 04:48:14,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:48:14,913 INFO L93 Difference]: Finished difference Result 23 states and 38 transitions. [2019-12-27 04:48:14,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 04:48:14,915 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-12-27 04:48:14,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:48:14,925 INFO L225 Difference]: With dead ends: 23 [2019-12-27 04:48:14,925 INFO L226 Difference]: Without dead ends: 23 [2019-12-27 04:48:14,926 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:48:14,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-27 04:48:14,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-27 04:48:14,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-27 04:48:14,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 38 transitions. [2019-12-27 04:48:14,964 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 38 transitions. Word has length 5 [2019-12-27 04:48:14,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:48:14,964 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 38 transitions. [2019-12-27 04:48:14,965 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 04:48:14,965 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 38 transitions. [2019-12-27 04:48:14,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-27 04:48:14,965 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:48:14,965 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-27 04:48:14,966 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-27 04:48:14,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:48:14,966 INFO L82 PathProgramCache]: Analyzing trace with hash 174992566, now seen corresponding path program 1 times [2019-12-27 04:48:14,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:48:14,967 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860027748] [2019-12-27 04:48:14,967 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:48:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:48:15,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:48:15,060 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860027748] [2019-12-27 04:48:15,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:48:15,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 04:48:15,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475060552] [2019-12-27 04:48:15,063 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 04:48:15,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:48:15,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 04:48:15,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 04:48:15,064 INFO L87 Difference]: Start difference. First operand 23 states and 38 transitions. Second operand 3 states. [2019-12-27 04:48:15,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:48:15,082 INFO L93 Difference]: Finished difference Result 19 states and 31 transitions. [2019-12-27 04:48:15,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 04:48:15,083 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-12-27 04:48:15,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:48:15,084 INFO L225 Difference]: With dead ends: 19 [2019-12-27 04:48:15,084 INFO L226 Difference]: Without dead ends: 19 [2019-12-27 04:48:15,085 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 04:48:15,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-12-27 04:48:15,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2019-12-27 04:48:15,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-27 04:48:15,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 24 transitions. [2019-12-27 04:48:15,090 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 24 transitions. Word has length 6 [2019-12-27 04:48:15,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:48:15,090 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 24 transitions. [2019-12-27 04:48:15,090 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 04:48:15,090 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 24 transitions. [2019-12-27 04:48:15,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-27 04:48:15,091 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:48:15,091 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-12-27 04:48:15,092 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-27 04:48:15,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:48:15,092 INFO L82 PathProgramCache]: Analyzing trace with hash 174947503, now seen corresponding path program 1 times [2019-12-27 04:48:15,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:48:15,093 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830411988] [2019-12-27 04:48:15,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:48:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 04:48:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 04:48:15,148 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-27 04:48:15,149 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-27 04:48:15,149 WARN L364 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-27 04:48:15,150 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2019-12-27 04:48:15,159 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:15,159 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:15,160 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:15,160 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:15,160 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:15,161 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:15,161 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:15,161 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:15,161 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:15,162 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:15,162 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:15,162 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:15,163 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:15,163 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:15,163 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:15,163 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:15,163 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:15,164 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:15,164 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:15,164 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:15,165 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:15,165 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:15,166 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:15,166 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:15,166 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:15,166 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:15,167 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:15,180 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:15,180 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:15,181 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:15,181 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:15,181 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:15,186 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-27 04:48:15,186 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 04:48:15,186 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 04:48:15,186 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 04:48:15,187 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 04:48:15,187 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 04:48:15,187 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 04:48:15,187 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 04:48:15,187 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 04:48:15,189 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 44 transitions [2019-12-27 04:48:15,190 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 44 places, 44 transitions [2019-12-27 04:48:15,217 INFO L132 PetriNetUnfolder]: 7/61 cut-off events. [2019-12-27 04:48:15,218 INFO L133 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2019-12-27 04:48:15,221 INFO L76 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 61 events. 7/61 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 124 event pairs. 0/49 useless extension candidates. Maximal degree in co-relation 40. Up to 6 conditions per place. [2019-12-27 04:48:15,225 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 44 places, 44 transitions [2019-12-27 04:48:15,246 INFO L132 PetriNetUnfolder]: 7/61 cut-off events. [2019-12-27 04:48:15,246 INFO L133 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2019-12-27 04:48:15,248 INFO L76 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 61 events. 7/61 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 124 event pairs. 0/49 useless extension candidates. Maximal degree in co-relation 40. Up to 6 conditions per place. [2019-12-27 04:48:15,250 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 792 [2019-12-27 04:48:15,250 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-27 04:48:15,791 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1527 [2019-12-27 04:48:15,792 INFO L214 etLargeBlockEncoding]: Total number of compositions: 28 [2019-12-27 04:48:15,792 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 21 transitions [2019-12-27 04:48:15,810 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 242 states. [2019-12-27 04:48:15,811 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2019-12-27 04:48:15,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-27 04:48:15,812 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:48:15,812 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:48:15,812 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:48:15,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:48:15,812 INFO L82 PathProgramCache]: Analyzing trace with hash -318478320, now seen corresponding path program 1 times [2019-12-27 04:48:15,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:48:15,814 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715128627] [2019-12-27 04:48:15,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:48:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:48:15,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:48:15,958 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715128627] [2019-12-27 04:48:15,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:48:15,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 04:48:15,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634006643] [2019-12-27 04:48:15,959 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 04:48:15,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:48:15,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 04:48:15,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-27 04:48:15,960 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 5 states. [2019-12-27 04:48:16,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:48:16,030 INFO L93 Difference]: Finished difference Result 278 states and 739 transitions. [2019-12-27 04:48:16,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 04:48:16,031 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-12-27 04:48:16,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:48:16,039 INFO L225 Difference]: With dead ends: 278 [2019-12-27 04:48:16,039 INFO L226 Difference]: Without dead ends: 278 [2019-12-27 04:48:16,039 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-27 04:48:16,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-12-27 04:48:16,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 238. [2019-12-27 04:48:16,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2019-12-27 04:48:16,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 633 transitions. [2019-12-27 04:48:16,080 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 633 transitions. Word has length 7 [2019-12-27 04:48:16,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:48:16,080 INFO L462 AbstractCegarLoop]: Abstraction has 238 states and 633 transitions. [2019-12-27 04:48:16,080 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 04:48:16,081 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 633 transitions. [2019-12-27 04:48:16,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-27 04:48:16,082 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:48:16,082 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2019-12-27 04:48:16,082 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:48:16,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:48:16,083 INFO L82 PathProgramCache]: Analyzing trace with hash -2063189442, now seen corresponding path program 1 times [2019-12-27 04:48:16,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:48:16,083 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203047559] [2019-12-27 04:48:16,083 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:48:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 04:48:16,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 04:48:16,137 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-27 04:48:16,137 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-27 04:48:16,137 WARN L364 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-27 04:48:16,137 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2019-12-27 04:48:16,149 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,152 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,152 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,152 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,153 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,153 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,153 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,153 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,153 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,156 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,156 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,157 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,157 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,157 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,157 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,157 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,158 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,158 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,158 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,158 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,159 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,159 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,159 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,160 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,160 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,161 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,161 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,161 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,161 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,162 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,164 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,164 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,165 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,165 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,165 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,166 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,166 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,166 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,168 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,168 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,169 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,169 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,169 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,171 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,172 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,172 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,172 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,172 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:16,174 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-12-27 04:48:16,174 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 04:48:16,174 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 04:48:16,175 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 04:48:16,175 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 04:48:16,175 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 04:48:16,175 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 04:48:16,175 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 04:48:16,175 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 04:48:16,177 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 57 transitions [2019-12-27 04:48:16,177 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 57 places, 57 transitions [2019-12-27 04:48:16,211 INFO L132 PetriNetUnfolder]: 10/83 cut-off events. [2019-12-27 04:48:16,214 INFO L133 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2019-12-27 04:48:16,217 INFO L76 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 83 events. 10/83 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 192 event pairs. 0/66 useless extension candidates. Maximal degree in co-relation 65. Up to 8 conditions per place. [2019-12-27 04:48:16,223 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 57 places, 57 transitions [2019-12-27 04:48:16,250 INFO L132 PetriNetUnfolder]: 10/83 cut-off events. [2019-12-27 04:48:16,250 INFO L133 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2019-12-27 04:48:16,255 INFO L76 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 83 events. 10/83 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 192 event pairs. 0/66 useless extension candidates. Maximal degree in co-relation 65. Up to 8 conditions per place. [2019-12-27 04:48:16,259 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1656 [2019-12-27 04:48:16,259 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-27 04:48:16,769 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3846 [2019-12-27 04:48:16,769 INFO L214 etLargeBlockEncoding]: Total number of compositions: 37 [2019-12-27 04:48:16,770 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 29 transitions [2019-12-27 04:48:16,861 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1456 states. [2019-12-27 04:48:16,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states. [2019-12-27 04:48:16,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-27 04:48:16,863 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:48:16,863 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:48:16,863 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:48:16,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:48:16,864 INFO L82 PathProgramCache]: Analyzing trace with hash 679007988, now seen corresponding path program 1 times [2019-12-27 04:48:16,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:48:16,865 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817166624] [2019-12-27 04:48:16,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:48:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:48:16,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:48:16,977 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817166624] [2019-12-27 04:48:16,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:48:16,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 04:48:16,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436471184] [2019-12-27 04:48:16,979 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 04:48:16,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:48:16,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 04:48:16,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-27 04:48:16,980 INFO L87 Difference]: Start difference. First operand 1456 states. Second operand 5 states. [2019-12-27 04:48:17,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:48:17,119 INFO L93 Difference]: Finished difference Result 1766 states and 6426 transitions. [2019-12-27 04:48:17,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 04:48:17,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-12-27 04:48:17,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:48:17,150 INFO L225 Difference]: With dead ends: 1766 [2019-12-27 04:48:17,150 INFO L226 Difference]: Without dead ends: 1766 [2019-12-27 04:48:17,151 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-27 04:48:17,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2019-12-27 04:48:17,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 1375. [2019-12-27 04:48:17,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1375 states. [2019-12-27 04:48:17,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 5020 transitions. [2019-12-27 04:48:17,267 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 5020 transitions. Word has length 7 [2019-12-27 04:48:17,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:48:17,268 INFO L462 AbstractCegarLoop]: Abstraction has 1375 states and 5020 transitions. [2019-12-27 04:48:17,268 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 04:48:17,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 5020 transitions. [2019-12-27 04:48:17,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-27 04:48:17,271 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:48:17,271 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:48:17,271 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:48:17,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:48:17,271 INFO L82 PathProgramCache]: Analyzing trace with hash -308361575, now seen corresponding path program 1 times [2019-12-27 04:48:17,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:48:17,272 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496972587] [2019-12-27 04:48:17,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:48:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:48:17,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:48:17,387 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496972587] [2019-12-27 04:48:17,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:48:17,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 04:48:17,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385142032] [2019-12-27 04:48:17,388 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 04:48:17,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:48:17,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 04:48:17,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:48:17,389 INFO L87 Difference]: Start difference. First operand 1375 states and 5020 transitions. Second operand 4 states. [2019-12-27 04:48:17,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:48:17,533 INFO L93 Difference]: Finished difference Result 1759 states and 6445 transitions. [2019-12-27 04:48:17,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 04:48:17,534 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-27 04:48:17,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:48:17,551 INFO L225 Difference]: With dead ends: 1759 [2019-12-27 04:48:17,551 INFO L226 Difference]: Without dead ends: 1759 [2019-12-27 04:48:17,552 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:48:17,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1759 states. [2019-12-27 04:48:17,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1759 to 1457. [2019-12-27 04:48:17,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2019-12-27 04:48:17,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 5350 transitions. [2019-12-27 04:48:17,623 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 5350 transitions. Word has length 9 [2019-12-27 04:48:17,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:48:17,623 INFO L462 AbstractCegarLoop]: Abstraction has 1457 states and 5350 transitions. [2019-12-27 04:48:17,624 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 04:48:17,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 5350 transitions. [2019-12-27 04:48:17,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-27 04:48:17,624 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:48:17,625 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:48:17,625 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:48:17,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:48:17,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1571029315, now seen corresponding path program 1 times [2019-12-27 04:48:17,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:48:17,627 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394801538] [2019-12-27 04:48:17,627 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:48:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:48:17,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 04:48:17,708 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394801538] [2019-12-27 04:48:17,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:48:17,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 04:48:17,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169027732] [2019-12-27 04:48:17,710 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 04:48:17,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:48:17,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 04:48:17,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-27 04:48:17,711 INFO L87 Difference]: Start difference. First operand 1457 states and 5350 transitions. Second operand 5 states. [2019-12-27 04:48:17,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:48:17,818 INFO L93 Difference]: Finished difference Result 1901 states and 6945 transitions. [2019-12-27 04:48:17,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 04:48:17,819 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-12-27 04:48:17,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:48:17,836 INFO L225 Difference]: With dead ends: 1901 [2019-12-27 04:48:17,837 INFO L226 Difference]: Without dead ends: 1901 [2019-12-27 04:48:17,837 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-27 04:48:17,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1901 states. [2019-12-27 04:48:17,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1901 to 1620. [2019-12-27 04:48:17,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1620 states. [2019-12-27 04:48:17,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 5934 transitions. [2019-12-27 04:48:17,908 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 5934 transitions. Word has length 10 [2019-12-27 04:48:17,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:48:17,909 INFO L462 AbstractCegarLoop]: Abstraction has 1620 states and 5934 transitions. [2019-12-27 04:48:17,909 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 04:48:17,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 5934 transitions. [2019-12-27 04:48:17,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-27 04:48:17,911 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:48:17,911 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:48:17,911 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:48:17,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:48:17,912 INFO L82 PathProgramCache]: Analyzing trace with hash 2069312604, now seen corresponding path program 1 times [2019-12-27 04:48:17,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:48:17,912 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276030570] [2019-12-27 04:48:17,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:48:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:48:17,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 04:48:17,988 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276030570] [2019-12-27 04:48:17,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:48:17,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 04:48:17,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614795078] [2019-12-27 04:48:17,989 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 04:48:17,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:48:17,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 04:48:17,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:48:17,990 INFO L87 Difference]: Start difference. First operand 1620 states and 5934 transitions. Second operand 4 states. [2019-12-27 04:48:18,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:48:18,110 INFO L93 Difference]: Finished difference Result 1956 states and 7185 transitions. [2019-12-27 04:48:18,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 04:48:18,110 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-12-27 04:48:18,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:48:18,130 INFO L225 Difference]: With dead ends: 1956 [2019-12-27 04:48:18,130 INFO L226 Difference]: Without dead ends: 1956 [2019-12-27 04:48:18,131 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:48:18,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2019-12-27 04:48:18,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1716. [2019-12-27 04:48:18,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1716 states. [2019-12-27 04:48:18,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 6322 transitions. [2019-12-27 04:48:18,194 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 6322 transitions. Word has length 12 [2019-12-27 04:48:18,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:48:18,194 INFO L462 AbstractCegarLoop]: Abstraction has 1716 states and 6322 transitions. [2019-12-27 04:48:18,194 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 04:48:18,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 6322 transitions. [2019-12-27 04:48:18,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-27 04:48:18,195 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:48:18,196 INFO L411 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2019-12-27 04:48:18,196 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:48:18,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:48:18,196 INFO L82 PathProgramCache]: Analyzing trace with hash 351828682, now seen corresponding path program 1 times [2019-12-27 04:48:18,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:48:18,197 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168486740] [2019-12-27 04:48:18,197 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:48:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 04:48:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 04:48:18,214 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-27 04:48:18,214 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-27 04:48:18,215 WARN L364 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-27 04:48:18,215 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2019-12-27 04:48:18,221 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,222 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,222 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,222 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,222 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,223 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,223 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,223 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,223 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,223 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,224 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,224 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,224 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,224 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,224 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,225 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,225 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,225 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,225 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,225 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,226 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,226 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,226 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,226 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,227 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,227 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,227 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,227 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,227 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,227 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,228 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,228 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,228 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,228 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,228 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,229 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,229 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,229 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,229 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,229 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,229 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,230 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,230 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,230 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,230 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,231 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,231 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,231 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,231 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,233 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,233 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,233 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,233 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,234 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,235 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,235 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,235 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,235 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,236 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,237 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,237 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,237 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,237 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,238 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:18,239 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-12-27 04:48:18,239 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 04:48:18,239 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 04:48:18,239 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 04:48:18,239 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 04:48:18,240 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 04:48:18,240 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 04:48:18,240 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 04:48:18,240 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 04:48:18,241 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 70 transitions [2019-12-27 04:48:18,241 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 70 places, 70 transitions [2019-12-27 04:48:18,258 INFO L132 PetriNetUnfolder]: 13/105 cut-off events. [2019-12-27 04:48:18,258 INFO L133 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2019-12-27 04:48:18,260 INFO L76 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 105 events. 13/105 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 266 event pairs. 0/83 useless extension candidates. Maximal degree in co-relation 92. Up to 10 conditions per place. [2019-12-27 04:48:18,265 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 70 places, 70 transitions [2019-12-27 04:48:18,279 INFO L132 PetriNetUnfolder]: 13/105 cut-off events. [2019-12-27 04:48:18,279 INFO L133 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2019-12-27 04:48:18,281 INFO L76 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 105 events. 13/105 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 266 event pairs. 0/83 useless extension candidates. Maximal degree in co-relation 92. Up to 10 conditions per place. [2019-12-27 04:48:18,286 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2832 [2019-12-27 04:48:18,286 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-27 04:48:18,866 INFO L206 etLargeBlockEncoding]: Checked pairs total: 6703 [2019-12-27 04:48:18,867 INFO L214 etLargeBlockEncoding]: Total number of compositions: 43 [2019-12-27 04:48:18,867 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 39 transitions [2019-12-27 04:48:19,731 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 11890 states. [2019-12-27 04:48:19,731 INFO L276 IsEmpty]: Start isEmpty. Operand 11890 states. [2019-12-27 04:48:19,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-27 04:48:19,732 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:48:19,732 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:48:19,732 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-27 04:48:19,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:48:19,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1894692225, now seen corresponding path program 1 times [2019-12-27 04:48:19,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:48:19,733 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314397944] [2019-12-27 04:48:19,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:48:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:48:19,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:48:19,795 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314397944] [2019-12-27 04:48:19,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:48:19,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 04:48:19,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376112624] [2019-12-27 04:48:19,798 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 04:48:19,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:48:19,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 04:48:19,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-27 04:48:19,799 INFO L87 Difference]: Start difference. First operand 11890 states. Second operand 5 states. [2019-12-27 04:48:20,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:48:20,059 INFO L93 Difference]: Finished difference Result 12881 states and 59621 transitions. [2019-12-27 04:48:20,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 04:48:20,059 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-12-27 04:48:20,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:48:20,257 INFO L225 Difference]: With dead ends: 12881 [2019-12-27 04:48:20,257 INFO L226 Difference]: Without dead ends: 12881 [2019-12-27 04:48:20,257 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-27 04:48:20,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12881 states. [2019-12-27 04:48:20,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12881 to 10414. [2019-12-27 04:48:20,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10414 states. [2019-12-27 04:48:20,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10414 states to 10414 states and 48368 transitions. [2019-12-27 04:48:20,844 INFO L78 Accepts]: Start accepts. Automaton has 10414 states and 48368 transitions. Word has length 7 [2019-12-27 04:48:20,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:48:20,844 INFO L462 AbstractCegarLoop]: Abstraction has 10414 states and 48368 transitions. [2019-12-27 04:48:20,845 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 04:48:20,845 INFO L276 IsEmpty]: Start isEmpty. Operand 10414 states and 48368 transitions. [2019-12-27 04:48:20,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-27 04:48:20,846 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:48:20,846 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:48:20,846 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-27 04:48:20,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:48:20,846 INFO L82 PathProgramCache]: Analyzing trace with hash -266923908, now seen corresponding path program 1 times [2019-12-27 04:48:20,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:48:20,847 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496573829] [2019-12-27 04:48:20,847 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:48:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:48:20,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:48:20,918 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496573829] [2019-12-27 04:48:20,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:48:20,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 04:48:20,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677740680] [2019-12-27 04:48:20,919 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 04:48:20,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:48:20,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 04:48:20,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:48:20,920 INFO L87 Difference]: Start difference. First operand 10414 states and 48368 transitions. Second operand 4 states. [2019-12-27 04:48:21,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:48:21,230 INFO L93 Difference]: Finished difference Result 13720 states and 63827 transitions. [2019-12-27 04:48:21,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 04:48:21,232 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-27 04:48:21,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:48:21,310 INFO L225 Difference]: With dead ends: 13720 [2019-12-27 04:48:21,310 INFO L226 Difference]: Without dead ends: 13720 [2019-12-27 04:48:21,311 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:48:21,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13720 states. [2019-12-27 04:48:22,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13720 to 11882. [2019-12-27 04:48:22,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11882 states. [2019-12-27 04:48:22,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11882 states to 11882 states and 55338 transitions. [2019-12-27 04:48:22,727 INFO L78 Accepts]: Start accepts. Automaton has 11882 states and 55338 transitions. Word has length 9 [2019-12-27 04:48:22,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:48:22,728 INFO L462 AbstractCegarLoop]: Abstraction has 11882 states and 55338 transitions. [2019-12-27 04:48:22,728 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 04:48:22,728 INFO L276 IsEmpty]: Start isEmpty. Operand 11882 states and 55338 transitions. [2019-12-27 04:48:22,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-27 04:48:22,728 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:48:22,728 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:48:22,729 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-27 04:48:22,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:48:22,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1346173357, now seen corresponding path program 1 times [2019-12-27 04:48:22,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:48:22,730 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279581492] [2019-12-27 04:48:22,730 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:48:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:48:22,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 04:48:22,795 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279581492] [2019-12-27 04:48:22,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:48:22,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 04:48:22,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082684843] [2019-12-27 04:48:22,796 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 04:48:22,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:48:22,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 04:48:22,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-27 04:48:22,797 INFO L87 Difference]: Start difference. First operand 11882 states and 55338 transitions. Second operand 5 states. [2019-12-27 04:48:23,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:48:23,212 INFO L93 Difference]: Finished difference Result 14603 states and 67754 transitions. [2019-12-27 04:48:23,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 04:48:23,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-12-27 04:48:23,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:48:23,302 INFO L225 Difference]: With dead ends: 14603 [2019-12-27 04:48:23,302 INFO L226 Difference]: Without dead ends: 14603 [2019-12-27 04:48:23,302 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-27 04:48:23,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14603 states. [2019-12-27 04:48:23,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14603 to 12579. [2019-12-27 04:48:23,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12579 states. [2019-12-27 04:48:23,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12579 states to 12579 states and 58491 transitions. [2019-12-27 04:48:23,811 INFO L78 Accepts]: Start accepts. Automaton has 12579 states and 58491 transitions. Word has length 10 [2019-12-27 04:48:23,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:48:23,813 INFO L462 AbstractCegarLoop]: Abstraction has 12579 states and 58491 transitions. [2019-12-27 04:48:23,813 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 04:48:23,813 INFO L276 IsEmpty]: Start isEmpty. Operand 12579 states and 58491 transitions. [2019-12-27 04:48:23,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-27 04:48:23,814 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:48:23,814 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:48:23,815 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-27 04:48:23,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:48:23,815 INFO L82 PathProgramCache]: Analyzing trace with hash 887448628, now seen corresponding path program 1 times [2019-12-27 04:48:23,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:48:23,815 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563680496] [2019-12-27 04:48:23,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:48:23,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:48:23,873 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 04:48:23,874 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563680496] [2019-12-27 04:48:23,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:48:23,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 04:48:23,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741042411] [2019-12-27 04:48:23,875 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 04:48:23,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:48:23,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 04:48:23,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:48:23,876 INFO L87 Difference]: Start difference. First operand 12579 states and 58491 transitions. Second operand 4 states. [2019-12-27 04:48:24,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:48:24,384 INFO L93 Difference]: Finished difference Result 16611 states and 77337 transitions. [2019-12-27 04:48:24,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 04:48:24,385 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-12-27 04:48:24,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:48:24,513 INFO L225 Difference]: With dead ends: 16611 [2019-12-27 04:48:24,513 INFO L226 Difference]: Without dead ends: 16611 [2019-12-27 04:48:24,514 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:48:24,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16611 states. [2019-12-27 04:48:25,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16611 to 14745. [2019-12-27 04:48:25,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14745 states. [2019-12-27 04:48:25,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14745 states to 14745 states and 68743 transitions. [2019-12-27 04:48:25,320 INFO L78 Accepts]: Start accepts. Automaton has 14745 states and 68743 transitions. Word has length 12 [2019-12-27 04:48:25,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:48:25,320 INFO L462 AbstractCegarLoop]: Abstraction has 14745 states and 68743 transitions. [2019-12-27 04:48:25,320 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 04:48:25,320 INFO L276 IsEmpty]: Start isEmpty. Operand 14745 states and 68743 transitions. [2019-12-27 04:48:25,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-27 04:48:25,321 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:48:25,322 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:48:25,322 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-27 04:48:25,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:48:25,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1569221179, now seen corresponding path program 1 times [2019-12-27 04:48:25,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:48:25,323 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315704516] [2019-12-27 04:48:25,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:48:25,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:48:25,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-27 04:48:25,379 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315704516] [2019-12-27 04:48:25,380 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173899007] [2019-12-27 04:48:25,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:48:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:48:25,441 INFO L264 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 21 conjunts are in the unsatisfiable core [2019-12-27 04:48:25,443 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:48:25,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-27 04:48:25,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:48:25,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2019-12-27 04:48:25,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846147188] [2019-12-27 04:48:25,524 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-27 04:48:25,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:48:25,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-27 04:48:25,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-12-27 04:48:25,524 INFO L87 Difference]: Start difference. First operand 14745 states and 68743 transitions. Second operand 9 states. [2019-12-27 04:48:25,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:48:25,776 INFO L93 Difference]: Finished difference Result 2473 states and 9025 transitions. [2019-12-27 04:48:25,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-27 04:48:25,776 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2019-12-27 04:48:25,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:48:25,786 INFO L225 Difference]: With dead ends: 2473 [2019-12-27 04:48:25,787 INFO L226 Difference]: Without dead ends: 2473 [2019-12-27 04:48:25,787 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-12-27 04:48:25,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2019-12-27 04:48:25,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 1856. [2019-12-27 04:48:25,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1856 states. [2019-12-27 04:48:25,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 6612 transitions. [2019-12-27 04:48:25,840 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 6612 transitions. Word has length 13 [2019-12-27 04:48:25,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:48:25,840 INFO L462 AbstractCegarLoop]: Abstraction has 1856 states and 6612 transitions. [2019-12-27 04:48:25,840 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-27 04:48:25,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 6612 transitions. [2019-12-27 04:48:25,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-27 04:48:25,841 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:48:25,842 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:48:26,047 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:48:26,047 INFO L410 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-27 04:48:26,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:48:26,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1530307197, now seen corresponding path program 1 times [2019-12-27 04:48:26,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:48:26,048 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193544311] [2019-12-27 04:48:26,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:48:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:48:26,125 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-27 04:48:26,126 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193544311] [2019-12-27 04:48:26,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:48:26,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 04:48:26,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263314355] [2019-12-27 04:48:26,127 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 04:48:26,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:48:26,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 04:48:26,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-27 04:48:26,128 INFO L87 Difference]: Start difference. First operand 1856 states and 6612 transitions. Second operand 5 states. [2019-12-27 04:48:26,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:48:26,205 INFO L93 Difference]: Finished difference Result 3101 states and 11085 transitions. [2019-12-27 04:48:26,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 04:48:26,206 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-12-27 04:48:26,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:48:26,217 INFO L225 Difference]: With dead ends: 3101 [2019-12-27 04:48:26,217 INFO L226 Difference]: Without dead ends: 3101 [2019-12-27 04:48:26,218 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-27 04:48:26,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3101 states. [2019-12-27 04:48:26,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3101 to 2126. [2019-12-27 04:48:26,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2126 states. [2019-12-27 04:48:26,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2126 states to 2126 states and 7602 transitions. [2019-12-27 04:48:26,275 INFO L78 Accepts]: Start accepts. Automaton has 2126 states and 7602 transitions. Word has length 13 [2019-12-27 04:48:26,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:48:26,275 INFO L462 AbstractCegarLoop]: Abstraction has 2126 states and 7602 transitions. [2019-12-27 04:48:26,275 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 04:48:26,276 INFO L276 IsEmpty]: Start isEmpty. Operand 2126 states and 7602 transitions. [2019-12-27 04:48:26,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-27 04:48:26,277 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:48:26,277 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:48:26,277 INFO L410 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-27 04:48:26,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:48:26,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1746398055, now seen corresponding path program 1 times [2019-12-27 04:48:26,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:48:26,278 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452615946] [2019-12-27 04:48:26,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:48:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:48:26,330 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-27 04:48:26,330 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452615946] [2019-12-27 04:48:26,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:48:26,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 04:48:26,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488802633] [2019-12-27 04:48:26,331 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 04:48:26,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:48:26,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 04:48:26,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:48:26,332 INFO L87 Difference]: Start difference. First operand 2126 states and 7602 transitions. Second operand 4 states. [2019-12-27 04:48:28,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:48:28,403 INFO L93 Difference]: Finished difference Result 1991 states and 7107 transitions. [2019-12-27 04:48:28,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 04:48:28,404 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-12-27 04:48:28,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:48:28,410 INFO L225 Difference]: With dead ends: 1991 [2019-12-27 04:48:28,410 INFO L226 Difference]: Without dead ends: 1991 [2019-12-27 04:48:28,410 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:48:28,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2019-12-27 04:48:28,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 1991. [2019-12-27 04:48:28,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1991 states. [2019-12-27 04:48:28,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1991 states to 1991 states and 7107 transitions. [2019-12-27 04:48:28,456 INFO L78 Accepts]: Start accepts. Automaton has 1991 states and 7107 transitions. Word has length 15 [2019-12-27 04:48:28,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:48:28,456 INFO L462 AbstractCegarLoop]: Abstraction has 1991 states and 7107 transitions. [2019-12-27 04:48:28,457 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 04:48:28,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1991 states and 7107 transitions. [2019-12-27 04:48:28,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-27 04:48:28,458 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:48:28,458 INFO L411 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2019-12-27 04:48:28,458 INFO L410 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-27 04:48:28,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:48:28,459 INFO L82 PathProgramCache]: Analyzing trace with hash -452078714, now seen corresponding path program 1 times [2019-12-27 04:48:28,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:48:28,459 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026951129] [2019-12-27 04:48:28,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:48:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 04:48:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 04:48:28,475 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-27 04:48:28,475 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-27 04:48:28,476 WARN L364 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-27 04:48:28,476 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2019-12-27 04:48:28,488 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,489 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,489 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,489 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,489 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,489 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,490 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,490 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,490 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,490 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,490 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,491 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,491 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,491 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,491 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,491 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,492 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,492 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,492 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,492 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,492 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,493 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,493 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,493 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,493 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,493 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,494 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,494 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,494 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,494 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,495 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,495 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,495 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,495 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,495 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,496 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,496 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,496 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,496 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,496 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,496 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,496 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,497 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,497 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,497 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,497 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,497 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,497 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,498 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,498 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,498 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,498 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,498 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,499 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,499 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,499 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,499 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,499 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,500 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,500 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,502 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,502 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,502 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,502 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,503 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,515 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,515 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,516 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,516 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,516 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,518 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,518 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,518 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,518 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,519 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,520 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,520 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,520 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,520 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,521 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:48:28,522 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-12-27 04:48:28,523 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 04:48:28,523 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 04:48:28,523 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 04:48:28,523 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 04:48:28,523 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 04:48:28,523 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 04:48:28,523 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 04:48:28,523 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 04:48:28,524 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 83 transitions [2019-12-27 04:48:28,524 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 83 places, 83 transitions [2019-12-27 04:48:28,543 INFO L132 PetriNetUnfolder]: 16/127 cut-off events. [2019-12-27 04:48:28,543 INFO L133 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2019-12-27 04:48:28,546 INFO L76 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 127 events. 16/127 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 336 event pairs. 0/100 useless extension candidates. Maximal degree in co-relation 121. Up to 12 conditions per place. [2019-12-27 04:48:28,554 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 83 places, 83 transitions [2019-12-27 04:48:28,571 INFO L132 PetriNetUnfolder]: 16/127 cut-off events. [2019-12-27 04:48:28,571 INFO L133 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2019-12-27 04:48:28,574 INFO L76 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 127 events. 16/127 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 336 event pairs. 0/100 useless extension candidates. Maximal degree in co-relation 121. Up to 12 conditions per place. [2019-12-27 04:48:28,581 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 4320 [2019-12-27 04:48:28,582 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-27 04:48:29,431 WARN L192 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2019-12-27 04:48:29,466 INFO L206 etLargeBlockEncoding]: Checked pairs total: 9864 [2019-12-27 04:48:29,466 INFO L214 etLargeBlockEncoding]: Total number of compositions: 53 [2019-12-27 04:48:29,467 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 47 transitions [2019-12-27 04:48:45,500 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 71348 states. [2019-12-27 04:48:45,500 INFO L276 IsEmpty]: Start isEmpty. Operand 71348 states. [2019-12-27 04:48:45,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-27 04:48:45,500 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:48:45,500 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:48:45,500 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:48:45,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:48:45,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1540890265, now seen corresponding path program 1 times [2019-12-27 04:48:45,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:48:45,501 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722565725] [2019-12-27 04:48:45,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:48:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:48:45,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:48:45,538 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722565725] [2019-12-27 04:48:45,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:48:45,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 04:48:45,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611120750] [2019-12-27 04:48:45,539 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 04:48:45,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:48:45,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 04:48:45,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-27 04:48:45,540 INFO L87 Difference]: Start difference. First operand 71348 states. Second operand 5 states. [2019-12-27 04:48:46,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:48:46,151 INFO L93 Difference]: Finished difference Result 73196 states and 411721 transitions. [2019-12-27 04:48:46,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 04:48:46,151 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-12-27 04:48:46,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:48:49,050 INFO L225 Difference]: With dead ends: 73196 [2019-12-27 04:48:49,050 INFO L226 Difference]: Without dead ends: 73196 [2019-12-27 04:48:49,050 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-27 04:48:49,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73196 states. [2019-12-27 04:48:51,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73196 to 60826. [2019-12-27 04:48:51,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60826 states. [2019-12-27 04:48:54,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60826 states to 60826 states and 343170 transitions. [2019-12-27 04:48:54,497 INFO L78 Accepts]: Start accepts. Automaton has 60826 states and 343170 transitions. Word has length 7 [2019-12-27 04:48:54,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:48:54,498 INFO L462 AbstractCegarLoop]: Abstraction has 60826 states and 343170 transitions. [2019-12-27 04:48:54,498 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 04:48:54,498 INFO L276 IsEmpty]: Start isEmpty. Operand 60826 states and 343170 transitions. [2019-12-27 04:48:54,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-27 04:48:54,498 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:48:54,498 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:48:54,499 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:48:54,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:48:54,499 INFO L82 PathProgramCache]: Analyzing trace with hash 968163332, now seen corresponding path program 1 times [2019-12-27 04:48:54,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:48:54,500 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358513639] [2019-12-27 04:48:54,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:48:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:48:54,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:48:54,575 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358513639] [2019-12-27 04:48:54,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:48:54,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 04:48:54,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109702878] [2019-12-27 04:48:54,577 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 04:48:54,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:48:54,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 04:48:54,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:48:54,577 INFO L87 Difference]: Start difference. First operand 60826 states and 343170 transitions. Second operand 4 states. [2019-12-27 04:48:55,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:48:55,297 INFO L93 Difference]: Finished difference Result 82861 states and 467763 transitions. [2019-12-27 04:48:55,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 04:48:55,298 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-27 04:48:55,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:48:55,613 INFO L225 Difference]: With dead ends: 82861 [2019-12-27 04:48:55,613 INFO L226 Difference]: Without dead ends: 82861 [2019-12-27 04:48:55,614 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:49:00,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82861 states. [2019-12-27 04:49:01,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82861 to 72662. [2019-12-27 04:49:01,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72662 states. [2019-12-27 04:49:02,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72662 states to 72662 states and 410462 transitions. [2019-12-27 04:49:02,514 INFO L78 Accepts]: Start accepts. Automaton has 72662 states and 410462 transitions. Word has length 9 [2019-12-27 04:49:02,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:49:02,514 INFO L462 AbstractCegarLoop]: Abstraction has 72662 states and 410462 transitions. [2019-12-27 04:49:02,514 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 04:49:02,514 INFO L276 IsEmpty]: Start isEmpty. Operand 72662 states and 410462 transitions. [2019-12-27 04:49:02,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-27 04:49:02,515 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:49:02,515 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:49:02,515 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:49:02,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:49:02,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1544155962, now seen corresponding path program 1 times [2019-12-27 04:49:02,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:49:02,518 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444856649] [2019-12-27 04:49:02,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:49:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:49:02,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 04:49:02,572 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444856649] [2019-12-27 04:49:02,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:49:02,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 04:49:02,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136480092] [2019-12-27 04:49:02,573 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 04:49:02,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:49:02,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 04:49:02,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-27 04:49:02,574 INFO L87 Difference]: Start difference. First operand 72662 states and 410462 transitions. Second operand 5 states. [2019-12-27 04:49:03,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:49:03,424 INFO L93 Difference]: Finished difference Result 87146 states and 490768 transitions. [2019-12-27 04:49:03,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 04:49:03,425 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-12-27 04:49:03,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:49:03,761 INFO L225 Difference]: With dead ends: 87146 [2019-12-27 04:49:03,762 INFO L226 Difference]: Without dead ends: 87146 [2019-12-27 04:49:03,762 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-27 04:49:09,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87146 states. [2019-12-27 04:49:10,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87146 to 75561. [2019-12-27 04:49:10,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75561 states. [2019-12-27 04:49:11,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75561 states to 75561 states and 426384 transitions. [2019-12-27 04:49:11,001 INFO L78 Accepts]: Start accepts. Automaton has 75561 states and 426384 transitions. Word has length 10 [2019-12-27 04:49:11,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:49:11,001 INFO L462 AbstractCegarLoop]: Abstraction has 75561 states and 426384 transitions. [2019-12-27 04:49:11,001 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 04:49:11,001 INFO L276 IsEmpty]: Start isEmpty. Operand 75561 states and 426384 transitions. [2019-12-27 04:49:11,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-27 04:49:11,002 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:49:11,002 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:49:11,002 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:49:11,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:49:11,002 INFO L82 PathProgramCache]: Analyzing trace with hash 2124830999, now seen corresponding path program 1 times [2019-12-27 04:49:11,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:49:11,003 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778341631] [2019-12-27 04:49:11,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:49:11,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:49:11,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 04:49:11,050 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778341631] [2019-12-27 04:49:11,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:49:11,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 04:49:11,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104457543] [2019-12-27 04:49:11,051 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 04:49:11,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:49:11,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 04:49:11,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:49:11,052 INFO L87 Difference]: Start difference. First operand 75561 states and 426384 transitions. Second operand 4 states. [2019-12-27 04:49:16,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:49:16,208 INFO L93 Difference]: Finished difference Result 108084 states and 610107 transitions. [2019-12-27 04:49:16,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 04:49:16,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-12-27 04:49:16,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:49:16,640 INFO L225 Difference]: With dead ends: 108084 [2019-12-27 04:49:16,640 INFO L226 Difference]: Without dead ends: 108084 [2019-12-27 04:49:16,641 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:49:18,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108084 states. [2019-12-27 04:49:25,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108084 to 95076. [2019-12-27 04:49:25,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95076 states. [2019-12-27 04:49:25,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95076 states to 95076 states and 537109 transitions. [2019-12-27 04:49:25,943 INFO L78 Accepts]: Start accepts. Automaton has 95076 states and 537109 transitions. Word has length 12 [2019-12-27 04:49:25,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:49:25,943 INFO L462 AbstractCegarLoop]: Abstraction has 95076 states and 537109 transitions. [2019-12-27 04:49:25,943 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 04:49:25,943 INFO L276 IsEmpty]: Start isEmpty. Operand 95076 states and 537109 transitions. [2019-12-27 04:49:25,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-27 04:49:25,944 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:49:25,945 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:49:25,945 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:49:25,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:49:25,945 INFO L82 PathProgramCache]: Analyzing trace with hash -566157841, now seen corresponding path program 1 times [2019-12-27 04:49:25,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:49:25,946 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933508000] [2019-12-27 04:49:25,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:49:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:49:26,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:49:26,009 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933508000] [2019-12-27 04:49:26,010 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487662896] [2019-12-27 04:49:26,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:49:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:49:26,079 INFO L264 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 21 conjunts are in the unsatisfiable core [2019-12-27 04:49:26,082 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:49:26,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:49:26,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:49:26,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2019-12-27 04:49:26,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326009287] [2019-12-27 04:49:26,153 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-27 04:49:26,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:49:26,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-27 04:49:26,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-12-27 04:49:26,154 INFO L87 Difference]: Start difference. First operand 95076 states and 537109 transitions. Second operand 9 states. [2019-12-27 04:49:26,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:49:26,500 INFO L93 Difference]: Finished difference Result 9215 states and 39414 transitions. [2019-12-27 04:49:26,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-27 04:49:26,500 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2019-12-27 04:49:26,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:49:26,533 INFO L225 Difference]: With dead ends: 9215 [2019-12-27 04:49:26,533 INFO L226 Difference]: Without dead ends: 9215 [2019-12-27 04:49:26,534 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-12-27 04:49:26,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9215 states. [2019-12-27 04:49:26,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9215 to 7375. [2019-12-27 04:49:26,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7375 states. [2019-12-27 04:49:26,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7375 states to 7375 states and 31180 transitions. [2019-12-27 04:49:26,765 INFO L78 Accepts]: Start accepts. Automaton has 7375 states and 31180 transitions. Word has length 13 [2019-12-27 04:49:26,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:49:26,766 INFO L462 AbstractCegarLoop]: Abstraction has 7375 states and 31180 transitions. [2019-12-27 04:49:26,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-27 04:49:26,766 INFO L276 IsEmpty]: Start isEmpty. Operand 7375 states and 31180 transitions. [2019-12-27 04:49:26,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-27 04:49:26,767 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:49:26,767 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Abandoning pump threads because process wont die! [2019-12-27 04:49:27,611 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:49:27,612 INFO L410 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:49:27,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:49:27,612 INFO L82 PathProgramCache]: Analyzing trace with hash 877704894, now seen corresponding path program 1 times [2019-12-27 04:49:27,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:49:27,613 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774365709] [2019-12-27 04:49:27,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:49:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:49:27,659 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-27 04:49:27,659 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774365709] [2019-12-27 04:49:27,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:49:27,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 04:49:27,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874819893] [2019-12-27 04:49:27,660 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 04:49:27,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:49:27,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 04:49:27,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-27 04:49:27,661 INFO L87 Difference]: Start difference. First operand 7375 states and 31180 transitions. Second operand 5 states. [2019-12-27 04:49:27,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:49:27,828 INFO L93 Difference]: Finished difference Result 12733 states and 53782 transitions. [2019-12-27 04:49:27,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 04:49:27,829 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-12-27 04:49:27,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:49:27,877 INFO L225 Difference]: With dead ends: 12733 [2019-12-27 04:49:27,878 INFO L226 Difference]: Without dead ends: 12733 [2019-12-27 04:49:27,878 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-27 04:49:27,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12733 states. [2019-12-27 04:49:28,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12733 to 8239. [2019-12-27 04:49:28,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8239 states. [2019-12-27 04:49:28,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8239 states to 8239 states and 34870 transitions. [2019-12-27 04:49:28,153 INFO L78 Accepts]: Start accepts. Automaton has 8239 states and 34870 transitions. Word has length 13 [2019-12-27 04:49:28,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:49:28,154 INFO L462 AbstractCegarLoop]: Abstraction has 8239 states and 34870 transitions. [2019-12-27 04:49:28,154 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 04:49:28,154 INFO L276 IsEmpty]: Start isEmpty. Operand 8239 states and 34870 transitions. [2019-12-27 04:49:28,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-27 04:49:28,155 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:49:28,155 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:49:28,155 INFO L410 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:49:28,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:49:28,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1660813028, now seen corresponding path program 1 times [2019-12-27 04:49:28,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:49:28,156 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287052389] [2019-12-27 04:49:28,156 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:49:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:49:28,192 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-27 04:49:28,192 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287052389] [2019-12-27 04:49:28,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:49:28,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 04:49:28,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397354022] [2019-12-27 04:49:28,193 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 04:49:28,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:49:28,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 04:49:28,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:49:28,194 INFO L87 Difference]: Start difference. First operand 8239 states and 34870 transitions. Second operand 4 states. [2019-12-27 04:49:28,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:49:28,277 INFO L93 Difference]: Finished difference Result 7375 states and 31180 transitions. [2019-12-27 04:49:28,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 04:49:28,277 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-12-27 04:49:28,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:49:28,293 INFO L225 Difference]: With dead ends: 7375 [2019-12-27 04:49:28,294 INFO L226 Difference]: Without dead ends: 7375 [2019-12-27 04:49:28,294 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:49:28,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7375 states. [2019-12-27 04:49:28,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7375 to 6511. [2019-12-27 04:49:28,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6511 states. [2019-12-27 04:49:28,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6511 states to 6511 states and 27490 transitions. [2019-12-27 04:49:28,429 INFO L78 Accepts]: Start accepts. Automaton has 6511 states and 27490 transitions. Word has length 15 [2019-12-27 04:49:28,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:49:28,429 INFO L462 AbstractCegarLoop]: Abstraction has 6511 states and 27490 transitions. [2019-12-27 04:49:28,429 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 04:49:28,429 INFO L276 IsEmpty]: Start isEmpty. Operand 6511 states and 27490 transitions. [2019-12-27 04:49:28,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-27 04:49:28,431 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:49:28,432 INFO L411 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:49:28,432 INFO L410 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:49:28,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:49:28,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1615225847, now seen corresponding path program 1 times [2019-12-27 04:49:28,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:49:28,432 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963354212] [2019-12-27 04:49:28,433 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:49:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:49:28,495 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-12-27 04:49:28,496 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963354212] [2019-12-27 04:49:28,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:49:28,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 04:49:28,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259686078] [2019-12-27 04:49:28,497 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 04:49:28,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:49:28,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 04:49:28,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-27 04:49:28,498 INFO L87 Difference]: Start difference. First operand 6511 states and 27490 transitions. Second operand 5 states. [2019-12-27 04:49:28,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:49:28,679 INFO L93 Difference]: Finished difference Result 11230 states and 47524 transitions. [2019-12-27 04:49:28,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 04:49:28,680 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-12-27 04:49:28,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:49:28,721 INFO L225 Difference]: With dead ends: 11230 [2019-12-27 04:49:28,721 INFO L226 Difference]: Without dead ends: 11230 [2019-12-27 04:49:28,722 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-27 04:49:28,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11230 states. [2019-12-27 04:49:28,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11230 to 7321. [2019-12-27 04:49:28,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7321 states. [2019-12-27 04:49:28,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7321 states to 7321 states and 31000 transitions. [2019-12-27 04:49:28,978 INFO L78 Accepts]: Start accepts. Automaton has 7321 states and 31000 transitions. Word has length 16 [2019-12-27 04:49:28,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:49:28,978 INFO L462 AbstractCegarLoop]: Abstraction has 7321 states and 31000 transitions. [2019-12-27 04:49:28,979 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 04:49:28,979 INFO L276 IsEmpty]: Start isEmpty. Operand 7321 states and 31000 transitions. [2019-12-27 04:49:28,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-27 04:49:28,982 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:49:28,982 INFO L411 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:49:28,983 INFO L410 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:49:28,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:49:28,983 INFO L82 PathProgramCache]: Analyzing trace with hash 501178303, now seen corresponding path program 1 times [2019-12-27 04:49:28,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:49:28,983 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512025375] [2019-12-27 04:49:28,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:49:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 04:49:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 04:49:29,016 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-27 04:49:29,016 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-27 04:49:29,017 WARN L364 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-27 04:49:29,018 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2019-12-27 04:49:29,030 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,030 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,030 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,030 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,030 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,031 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,031 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,031 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,031 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,031 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,031 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,032 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,032 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,032 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,032 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,032 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,033 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,033 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,033 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,033 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,033 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,033 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,034 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,034 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,034 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,034 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,034 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,034 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,034 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,035 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,035 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,035 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,035 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,035 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,035 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,036 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,036 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,036 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,036 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,036 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,036 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,037 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,037 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,037 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,037 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,037 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,038 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,038 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,038 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,038 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,038 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,038 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,038 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,039 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,039 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,039 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,039 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,039 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,039 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,040 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,040 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,040 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,040 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,040 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,040 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,041 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,041 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,041 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,041 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,041 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,042 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,043 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,043 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,043 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,044 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,044 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,045 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,046 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,046 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,046 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,046 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,048 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,048 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,048 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,048 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,048 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,050 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,051 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,051 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,051 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,051 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,053 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,053 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,054 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,054 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,054 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:49:29,056 INFO L249 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-12-27 04:49:29,056 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 04:49:29,056 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 04:49:29,056 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 04:49:29,056 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 04:49:29,056 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 04:49:29,056 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 04:49:29,057 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 04:49:29,057 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 04:49:29,058 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 96 transitions [2019-12-27 04:49:29,058 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 96 places, 96 transitions [2019-12-27 04:49:29,081 INFO L132 PetriNetUnfolder]: 19/149 cut-off events. [2019-12-27 04:49:29,081 INFO L133 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2019-12-27 04:49:29,085 INFO L76 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 149 events. 19/149 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 414 event pairs. 0/117 useless extension candidates. Maximal degree in co-relation 151. Up to 14 conditions per place. [2019-12-27 04:49:29,096 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 96 places, 96 transitions [2019-12-27 04:49:29,117 INFO L132 PetriNetUnfolder]: 19/149 cut-off events. [2019-12-27 04:49:29,118 INFO L133 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2019-12-27 04:49:29,121 INFO L76 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 149 events. 19/149 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 414 event pairs. 0/117 useless extension candidates. Maximal degree in co-relation 151. Up to 14 conditions per place. [2019-12-27 04:49:29,133 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 6120 [2019-12-27 04:49:29,133 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-27 04:49:29,910 INFO L206 etLargeBlockEncoding]: Checked pairs total: 16552 [2019-12-27 04:49:29,911 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2019-12-27 04:49:29,911 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 52 places, 57 transitions Received shutdown request... [2019-12-27 04:52:16,732 WARN L527 AbstractCegarLoop]: Verification canceled [2019-12-27 04:52:16,735 WARN L227 ceAbstractionStarter]: Timeout [2019-12-27 04:52:16,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 04:52:16 BasicIcfg [2019-12-27 04:52:16,736 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 04:52:16,738 INFO L168 Benchmark]: Toolchain (without parser) took 244192.95 ms. Allocated memory was 147.3 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 104.5 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. [2019-12-27 04:52:16,738 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 147.3 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-12-27 04:52:16,739 INFO L168 Benchmark]: CACSL2BoogieTranslator took 675.41 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 104.0 MB in the beginning and 164.4 MB in the end (delta: -60.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2019-12-27 04:52:16,739 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.48 ms. Allocated memory is still 204.5 MB. Free memory was 164.4 MB in the beginning and 162.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-27 04:52:16,748 INFO L168 Benchmark]: Boogie Preprocessor took 23.36 ms. Allocated memory is still 204.5 MB. Free memory was 162.4 MB in the beginning and 161.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-27 04:52:16,749 INFO L168 Benchmark]: RCFGBuilder took 395.12 ms. Allocated memory is still 204.5 MB. Free memory was 161.1 MB in the beginning and 144.9 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2019-12-27 04:52:16,749 INFO L168 Benchmark]: TraceAbstraction took 243047.29 ms. Allocated memory was 204.5 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 144.3 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. [2019-12-27 04:52:16,757 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 147.3 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 675.41 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 104.0 MB in the beginning and 164.4 MB in the end (delta: -60.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 46.48 ms. Allocated memory is still 204.5 MB. Free memory was 164.4 MB in the beginning and 162.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.36 ms. Allocated memory is still 204.5 MB. Free memory was 162.4 MB in the beginning and 161.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 395.12 ms. Allocated memory is still 204.5 MB. Free memory was 161.1 MB in the beginning and 144.9 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 243047.29 ms. Allocated memory was 204.5 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 144.3 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.7s, 31 ProgramPointsBefore, 10 ProgramPointsAfterwards, 31 TransitionsBefore, 10 TransitionsAfterwards, 240 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 111 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 169 CheckedPairsTotal, 27 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.6s, 44 ProgramPointsBefore, 20 ProgramPointsAfterwards, 44 TransitionsBefore, 21 TransitionsAfterwards, 792 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 2 ChoiceCompositions, 389 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1527 CheckedPairsTotal, 28 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.5s, 57 ProgramPointsBefore, 27 ProgramPointsAfterwards, 57 TransitionsBefore, 29 TransitionsAfterwards, 1656 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 768 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 3846 CheckedPairsTotal, 37 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.6s, 70 ProgramPointsBefore, 36 ProgramPointsAfterwards, 70 TransitionsBefore, 39 TransitionsAfterwards, 2832 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 1273 VarBasedMoverChecksPositive, 44 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 6703 CheckedPairsTotal, 43 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.9s, 83 ProgramPointsBefore, 43 ProgramPointsAfterwards, 83 TransitionsBefore, 47 TransitionsAfterwards, 4320 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 1865 VarBasedMoverChecksPositive, 51 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 9864 CheckedPairsTotal, 53 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.8s, 96 ProgramPointsBefore, 52 ProgramPointsAfterwards, 96 TransitionsBefore, 57 TransitionsAfterwards, 6120 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 2749 VarBasedMoverChecksPositive, 64 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 16552 CheckedPairsTotal, 57 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 687]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 687). Cancelled while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 52 places, 57 transitions. Already constructed 266049 states. Currently 56809 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 1 error locations. Result: TIMEOUT, OverallTime: 167.6s, OverallIterations: 0, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown