/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-atomic/lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 04:44:44,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 04:44:44,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 04:44:44,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 04:44:44,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 04:44:44,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 04:44:44,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 04:44:44,227 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 04:44:44,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 04:44:44,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 04:44:44,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 04:44:44,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 04:44:44,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 04:44:44,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 04:44:44,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 04:44:44,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 04:44:44,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 04:44:44,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 04:44:44,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 04:44:44,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 04:44:44,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 04:44:44,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 04:44:44,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 04:44:44,246 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 04:44:44,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-27 04:44:44,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-27 04:44:44,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-27 04:44:44,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-27 04:44:44,251 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-27 04:44:44,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-27 04:44:44,253 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 04:44:44,254 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 04:44:44,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 04:44:44,256 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 04:44:44,257 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 04:44:44,257 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 04:44:44,258 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 04:44:44,258 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 04:44:44,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 04:44:44,261 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 04:44:44,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 04:44:44,263 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 04:44:44,284 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 04:44:44,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 04:44:44,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 04:44:44,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 04:44:44,289 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 04:44:44,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 04:44:44,289 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 04:44:44,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 04:44:44,290 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 04:44:44,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 04:44:44,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 04:44:44,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 04:44:44,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 04:44:44,293 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 04:44:44,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 04:44:44,293 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 04:44:44,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 04:44:44,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 04:44:44,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 04:44:44,295 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 04:44:44,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 04:44:44,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 04:44:44,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 04:44:44,298 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 04:44:44,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 04:44:44,300 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 04:44:44,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 04:44:44,300 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-27 04:44:44,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 04:44:44,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 04:44:44,603 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 04:44:44,615 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 04:44:44,617 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 04:44:44,619 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 04:44:44,619 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 04:44:44,619 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/lamport.i [2019-12-27 04:44:44,686 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30fb9a52b/1c8941a8d0a74b3f91197cb18c302ccf/FLAGa461ffd1c [2019-12-27 04:44:45,287 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 04:44:45,288 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i [2019-12-27 04:44:45,301 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30fb9a52b/1c8941a8d0a74b3f91197cb18c302ccf/FLAGa461ffd1c [2019-12-27 04:44:45,589 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30fb9a52b/1c8941a8d0a74b3f91197cb18c302ccf [2019-12-27 04:44:45,599 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 04:44:45,601 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 04:44:45,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 04:44:45,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 04:44:45,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 04:44:45,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 04:44:45" (1/1) ... [2019-12-27 04:44:45,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@368349c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:44:45, skipping insertion in model container [2019-12-27 04:44:45,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 04:44:45" (1/1) ... [2019-12-27 04:44:45,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 04:44:45,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 04:44:46,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 04:44:46,126 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 04:44:46,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 04:44:46,290 INFO L208 MainTranslator]: Completed translation [2019-12-27 04:44:46,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:44:46 WrapperNode [2019-12-27 04:44:46,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 04:44:46,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 04:44:46,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 04:44:46,293 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 04:44:46,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:44:46" (1/1) ... [2019-12-27 04:44:46,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:44:46" (1/1) ... [2019-12-27 04:44:46,356 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 04:44:46,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 04:44:46,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 04:44:46,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 04:44:46,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:44:46" (1/1) ... [2019-12-27 04:44:46,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:44:46" (1/1) ... [2019-12-27 04:44:46,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:44:46" (1/1) ... [2019-12-27 04:44:46,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:44:46" (1/1) ... [2019-12-27 04:44:46,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:44:46" (1/1) ... [2019-12-27 04:44:46,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:44:46" (1/1) ... [2019-12-27 04:44:46,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:44:46" (1/1) ... [2019-12-27 04:44:46,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 04:44:46,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 04:44:46,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 04:44:46,386 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 04:44:46,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:44:46" (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 04:44:46,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-27 04:44:46,455 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2019-12-27 04:44:46,455 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2019-12-27 04:44:46,455 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-12-27 04:44:46,455 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-12-27 04:44:46,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 04:44:46,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 04:44:46,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 04:44:46,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 04:44:46,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 04:44:46,458 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 04:44:46,875 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 04:44:46,875 INFO L287 CfgBuilder]: Removed 12 assume(true) statements. [2019-12-27 04:44:46,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 04:44:46 BoogieIcfgContainer [2019-12-27 04:44:46,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 04:44:46,878 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 04:44:46,878 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 04:44:46,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 04:44:46,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 04:44:45" (1/3) ... [2019-12-27 04:44:46,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c24b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 04:44:46, skipping insertion in model container [2019-12-27 04:44:46,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:44:46" (2/3) ... [2019-12-27 04:44:46,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c24b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 04:44:46, skipping insertion in model container [2019-12-27 04:44:46,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 04:44:46" (3/3) ... [2019-12-27 04:44:46,886 INFO L109 eAbstractionObserver]: Analyzing ICFG lamport.i [2019-12-27 04:44:46,896 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 04:44:46,897 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 04:44:46,904 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-12-27 04:44:46,905 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 04:44:46,930 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:46,931 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:46,931 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:46,931 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:46,932 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:46,933 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:46,934 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:46,935 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:46,935 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:46,935 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:46,936 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:46,936 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:46,941 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:46,941 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:46,942 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:46,942 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:46,948 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:46,949 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:46,949 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:46,949 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:46,981 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-12-27 04:44:47,004 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 04:44:47,004 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 04:44:47,004 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 04:44:47,005 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 04:44:47,005 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 04:44:47,005 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 04:44:47,005 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 04:44:47,005 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 04:44:47,028 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 103 transitions [2019-12-27 04:44:47,029 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 84 places, 103 transitions [2019-12-27 04:44:47,090 INFO L132 PetriNetUnfolder]: 25/103 cut-off events. [2019-12-27 04:44:47,090 INFO L133 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2019-12-27 04:44:47,100 INFO L76 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 103 events. 25/103 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 205 event pairs. 0/77 useless extension candidates. Maximal degree in co-relation 79. Up to 5 conditions per place. [2019-12-27 04:44:47,107 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 84 places, 103 transitions [2019-12-27 04:44:47,132 INFO L132 PetriNetUnfolder]: 25/103 cut-off events. [2019-12-27 04:44:47,132 INFO L133 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2019-12-27 04:44:47,138 INFO L76 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 103 events. 25/103 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 205 event pairs. 0/77 useless extension candidates. Maximal degree in co-relation 79. Up to 5 conditions per place. [2019-12-27 04:44:47,143 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3196 [2019-12-27 04:44:47,145 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-27 04:44:48,115 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-12-27 04:44:48,206 INFO L206 etLargeBlockEncoding]: Checked pairs total: 11328 [2019-12-27 04:44:48,206 INFO L214 etLargeBlockEncoding]: Total number of compositions: 38 [2019-12-27 04:44:48,210 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 53 places, 65 transitions [2019-12-27 04:44:48,261 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 797 states. [2019-12-27 04:44:48,263 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states. [2019-12-27 04:44:48,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-27 04:44:48,272 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:44:48,273 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-27 04:44:48,274 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:44:48,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:44:48,281 INFO L82 PathProgramCache]: Analyzing trace with hash 13833324, now seen corresponding path program 1 times [2019-12-27 04:44:48,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:44:48,293 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563222259] [2019-12-27 04:44:48,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:44:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:44:48,452 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 04:44:48,453 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563222259] [2019-12-27 04:44:48,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:44:48,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 04:44:48,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805352226] [2019-12-27 04:44:48,460 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-27 04:44:48,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:44:48,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-27 04:44:48,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-27 04:44:48,479 INFO L87 Difference]: Start difference. First operand 797 states. Second operand 2 states. [2019-12-27 04:44:48,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:44:48,534 INFO L93 Difference]: Finished difference Result 797 states and 2314 transitions. [2019-12-27 04:44:48,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-27 04:44:48,536 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2019-12-27 04:44:48,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:44:48,564 INFO L225 Difference]: With dead ends: 797 [2019-12-27 04:44:48,564 INFO L226 Difference]: Without dead ends: 758 [2019-12-27 04:44:48,566 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-27 04:44:48,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2019-12-27 04:44:48,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 758. [2019-12-27 04:44:48,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 758 states. [2019-12-27 04:44:48,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 2229 transitions. [2019-12-27 04:44:48,700 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 2229 transitions. Word has length 4 [2019-12-27 04:44:48,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:44:48,700 INFO L462 AbstractCegarLoop]: Abstraction has 758 states and 2229 transitions. [2019-12-27 04:44:48,700 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-27 04:44:48,700 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 2229 transitions. [2019-12-27 04:44:48,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-27 04:44:48,703 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:44:48,703 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:44:48,704 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:44:48,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:44:48,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1620095088, now seen corresponding path program 1 times [2019-12-27 04:44:48,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:44:48,705 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689237320] [2019-12-27 04:44:48,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:44:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:44:48,789 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 04:44:48,789 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689237320] [2019-12-27 04:44:48,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:44:48,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 04:44:48,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420064352] [2019-12-27 04:44:48,792 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 04:44:48,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:44:48,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 04:44:48,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 04:44:48,793 INFO L87 Difference]: Start difference. First operand 758 states and 2229 transitions. Second operand 3 states. [2019-12-27 04:44:48,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:44:48,865 INFO L93 Difference]: Finished difference Result 761 states and 2195 transitions. [2019-12-27 04:44:48,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 04:44:48,866 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-27 04:44:48,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:44:48,872 INFO L225 Difference]: With dead ends: 761 [2019-12-27 04:44:48,873 INFO L226 Difference]: Without dead ends: 635 [2019-12-27 04:44:48,874 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 04:44:48,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2019-12-27 04:44:48,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 617. [2019-12-27 04:44:48,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2019-12-27 04:44:48,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 1829 transitions. [2019-12-27 04:44:48,910 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 1829 transitions. Word has length 10 [2019-12-27 04:44:48,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:44:48,910 INFO L462 AbstractCegarLoop]: Abstraction has 617 states and 1829 transitions. [2019-12-27 04:44:48,910 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 04:44:48,910 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 1829 transitions. [2019-12-27 04:44:48,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-27 04:44:48,913 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:44:48,913 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:44:48,913 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:44:48,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:44:48,914 INFO L82 PathProgramCache]: Analyzing trace with hash -563128116, now seen corresponding path program 1 times [2019-12-27 04:44:48,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:44:48,914 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469607316] [2019-12-27 04:44:48,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:44:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:44:48,973 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 04:44:48,974 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469607316] [2019-12-27 04:44:48,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:44:48,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 04:44:48,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081511464] [2019-12-27 04:44:48,975 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 04:44:48,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:44:48,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 04:44:48,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 04:44:48,977 INFO L87 Difference]: Start difference. First operand 617 states and 1829 transitions. Second operand 3 states. [2019-12-27 04:44:49,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:44:49,010 INFO L93 Difference]: Finished difference Result 596 states and 1750 transitions. [2019-12-27 04:44:49,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 04:44:49,011 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-12-27 04:44:49,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:44:49,016 INFO L225 Difference]: With dead ends: 596 [2019-12-27 04:44:49,016 INFO L226 Difference]: Without dead ends: 464 [2019-12-27 04:44:49,016 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 04:44:49,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2019-12-27 04:44:49,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2019-12-27 04:44:49,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2019-12-27 04:44:49,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1401 transitions. [2019-12-27 04:44:49,036 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1401 transitions. Word has length 12 [2019-12-27 04:44:49,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:44:49,038 INFO L462 AbstractCegarLoop]: Abstraction has 464 states and 1401 transitions. [2019-12-27 04:44:49,038 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 04:44:49,038 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1401 transitions. [2019-12-27 04:44:49,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-27 04:44:49,047 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:44:49,047 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:44:49,047 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:44:49,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:44:49,048 INFO L82 PathProgramCache]: Analyzing trace with hash -561689065, now seen corresponding path program 1 times [2019-12-27 04:44:49,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:44:49,049 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973543298] [2019-12-27 04:44:49,049 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:44:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:44:49,145 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 04:44:49,145 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973543298] [2019-12-27 04:44:49,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:44:49,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-27 04:44:49,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988995913] [2019-12-27 04:44:49,146 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 04:44:49,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:44:49,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 04:44:49,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:44:49,150 INFO L87 Difference]: Start difference. First operand 464 states and 1401 transitions. Second operand 4 states. [2019-12-27 04:44:49,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:44:49,197 INFO L93 Difference]: Finished difference Result 736 states and 2139 transitions. [2019-12-27 04:44:49,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 04:44:49,198 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2019-12-27 04:44:49,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:44:49,204 INFO L225 Difference]: With dead ends: 736 [2019-12-27 04:44:49,204 INFO L226 Difference]: Without dead ends: 736 [2019-12-27 04:44:49,205 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:44:49,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2019-12-27 04:44:49,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 570. [2019-12-27 04:44:49,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 570 states. [2019-12-27 04:44:49,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1720 transitions. [2019-12-27 04:44:49,228 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1720 transitions. Word has length 19 [2019-12-27 04:44:49,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:44:49,229 INFO L462 AbstractCegarLoop]: Abstraction has 570 states and 1720 transitions. [2019-12-27 04:44:49,229 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 04:44:49,229 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1720 transitions. [2019-12-27 04:44:49,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-27 04:44:49,231 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:44:49,231 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:44:49,232 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:44:49,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:44:49,232 INFO L82 PathProgramCache]: Analyzing trace with hash 417736639, now seen corresponding path program 1 times [2019-12-27 04:44:49,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:44:49,233 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454238028] [2019-12-27 04:44:49,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:44:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:44:49,320 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 04:44:49,320 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454238028] [2019-12-27 04:44:49,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:44:49,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 04:44:49,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124650690] [2019-12-27 04:44:49,322 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 04:44:49,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:44:49,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 04:44:49,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 04:44:49,323 INFO L87 Difference]: Start difference. First operand 570 states and 1720 transitions. Second operand 3 states. [2019-12-27 04:44:49,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:44:49,379 INFO L93 Difference]: Finished difference Result 752 states and 2168 transitions. [2019-12-27 04:44:49,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 04:44:49,380 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-12-27 04:44:49,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:44:49,385 INFO L225 Difference]: With dead ends: 752 [2019-12-27 04:44:49,386 INFO L226 Difference]: Without dead ends: 600 [2019-12-27 04:44:49,386 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 04:44:49,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2019-12-27 04:44:49,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 544. [2019-12-27 04:44:49,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2019-12-27 04:44:49,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 1570 transitions. [2019-12-27 04:44:49,406 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 1570 transitions. Word has length 19 [2019-12-27 04:44:49,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:44:49,406 INFO L462 AbstractCegarLoop]: Abstraction has 544 states and 1570 transitions. [2019-12-27 04:44:49,406 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 04:44:49,406 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 1570 transitions. [2019-12-27 04:44:49,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-27 04:44:49,409 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:44:49,411 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:44:49,411 INFO L410 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:44:49,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:44:49,412 INFO L82 PathProgramCache]: Analyzing trace with hash -691043045, now seen corresponding path program 2 times [2019-12-27 04:44:49,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:44:49,420 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985760051] [2019-12-27 04:44:49,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:44:49,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:44:49,479 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 04:44:49,480 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985760051] [2019-12-27 04:44:49,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:44:49,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 04:44:49,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610678747] [2019-12-27 04:44:49,482 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 04:44:49,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:44:49,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 04:44:49,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 04:44:49,483 INFO L87 Difference]: Start difference. First operand 544 states and 1570 transitions. Second operand 3 states. [2019-12-27 04:44:49,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:44:49,505 INFO L93 Difference]: Finished difference Result 632 states and 1652 transitions. [2019-12-27 04:44:49,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 04:44:49,505 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-12-27 04:44:49,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:44:49,510 INFO L225 Difference]: With dead ends: 632 [2019-12-27 04:44:49,510 INFO L226 Difference]: Without dead ends: 626 [2019-12-27 04:44:49,510 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 04:44:49,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-12-27 04:44:49,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 492. [2019-12-27 04:44:49,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 492 states. [2019-12-27 04:44:49,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 1340 transitions. [2019-12-27 04:44:49,528 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 1340 transitions. Word has length 19 [2019-12-27 04:44:49,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:44:49,528 INFO L462 AbstractCegarLoop]: Abstraction has 492 states and 1340 transitions. [2019-12-27 04:44:49,528 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 04:44:49,528 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1340 transitions. [2019-12-27 04:44:49,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-27 04:44:49,530 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:44:49,530 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:44:49,530 INFO L410 AbstractCegarLoop]: === Iteration 7 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:44:49,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:44:49,530 INFO L82 PathProgramCache]: Analyzing trace with hash 962803841, now seen corresponding path program 2 times [2019-12-27 04:44:49,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:44:49,531 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134122085] [2019-12-27 04:44:49,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:44:49,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:44:49,563 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 04:44:49,563 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134122085] [2019-12-27 04:44:49,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:44:49,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 04:44:49,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071402765] [2019-12-27 04:44:49,564 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 04:44:49,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:44:49,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 04:44:49,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 04:44:49,565 INFO L87 Difference]: Start difference. First operand 492 states and 1340 transitions. Second operand 3 states. [2019-12-27 04:44:49,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:44:49,616 INFO L93 Difference]: Finished difference Result 438 states and 1079 transitions. [2019-12-27 04:44:49,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 04:44:49,617 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-12-27 04:44:49,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:44:49,619 INFO L225 Difference]: With dead ends: 438 [2019-12-27 04:44:49,619 INFO L226 Difference]: Without dead ends: 310 [2019-12-27 04:44:49,620 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 04:44:49,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2019-12-27 04:44:49,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 264. [2019-12-27 04:44:49,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2019-12-27 04:44:49,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 620 transitions. [2019-12-27 04:44:49,630 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 620 transitions. Word has length 19 [2019-12-27 04:44:49,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:44:49,632 INFO L462 AbstractCegarLoop]: Abstraction has 264 states and 620 transitions. [2019-12-27 04:44:49,632 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 04:44:49,632 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 620 transitions. [2019-12-27 04:44:49,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-27 04:44:49,633 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:44:49,633 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:44:49,634 INFO L410 AbstractCegarLoop]: === Iteration 8 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:44:49,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:44:49,634 INFO L82 PathProgramCache]: Analyzing trace with hash -95552411, now seen corresponding path program 1 times [2019-12-27 04:44:49,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:44:49,635 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335127705] [2019-12-27 04:44:49,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:44:49,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:44:49,690 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 04:44:49,691 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335127705] [2019-12-27 04:44:49,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:44:49,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 04:44:49,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859537150] [2019-12-27 04:44:49,692 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 04:44:49,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:44:49,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 04:44:49,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 04:44:49,693 INFO L87 Difference]: Start difference. First operand 264 states and 620 transitions. Second operand 3 states. [2019-12-27 04:44:49,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:44:49,706 INFO L93 Difference]: Finished difference Result 248 states and 580 transitions. [2019-12-27 04:44:49,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 04:44:49,706 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-12-27 04:44:49,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:44:49,708 INFO L225 Difference]: With dead ends: 248 [2019-12-27 04:44:49,708 INFO L226 Difference]: Without dead ends: 202 [2019-12-27 04:44:49,709 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 04:44:49,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2019-12-27 04:44:49,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2019-12-27 04:44:49,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2019-12-27 04:44:49,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 472 transitions. [2019-12-27 04:44:49,717 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 472 transitions. Word has length 22 [2019-12-27 04:44:49,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:44:49,718 INFO L462 AbstractCegarLoop]: Abstraction has 202 states and 472 transitions. [2019-12-27 04:44:49,718 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 04:44:49,718 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 472 transitions. [2019-12-27 04:44:49,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-27 04:44:49,719 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:44:49,720 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:44:49,720 INFO L410 AbstractCegarLoop]: === Iteration 9 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:44:49,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:44:49,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1640844081, now seen corresponding path program 1 times [2019-12-27 04:44:49,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:44:49,721 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309585471] [2019-12-27 04:44:49,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:44:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:44:49,783 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 04:44:49,784 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309585471] [2019-12-27 04:44:49,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:44:49,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 04:44:49,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019143344] [2019-12-27 04:44:49,786 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 04:44:49,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:44:49,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 04:44:49,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 04:44:49,790 INFO L87 Difference]: Start difference. First operand 202 states and 472 transitions. Second operand 3 states. [2019-12-27 04:44:49,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:44:49,801 INFO L93 Difference]: Finished difference Result 136 states and 347 transitions. [2019-12-27 04:44:49,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 04:44:49,802 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-12-27 04:44:49,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:44:49,803 INFO L225 Difference]: With dead ends: 136 [2019-12-27 04:44:49,803 INFO L226 Difference]: Without dead ends: 0 [2019-12-27 04:44:49,803 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 04:44:49,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-27 04:44:49,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-27 04:44:49,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-27 04:44:49,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-27 04:44:49,804 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2019-12-27 04:44:49,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:44:49,804 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-27 04:44:49,804 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 04:44:49,805 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-27 04:44:49,805 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-27 04:44:49,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 04:44:49 BasicIcfg [2019-12-27 04:44:49,812 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 04:44:49,815 INFO L168 Benchmark]: Toolchain (without parser) took 4213.69 ms. Allocated memory was 138.4 MB in the beginning and 246.9 MB in the end (delta: 108.5 MB). Free memory was 102.2 MB in the beginning and 98.6 MB in the end (delta: 3.6 MB). Peak memory consumption was 112.1 MB. Max. memory is 7.1 GB. [2019-12-27 04:44:49,816 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-12-27 04:44:49,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 690.19 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 101.9 MB in the beginning and 159.9 MB in the end (delta: -58.0 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2019-12-27 04:44:49,818 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.44 ms. Allocated memory is still 202.4 MB. Free memory was 159.9 MB in the beginning and 157.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-27 04:44:49,823 INFO L168 Benchmark]: Boogie Preprocessor took 28.90 ms. Allocated memory is still 202.4 MB. Free memory was 157.9 MB in the beginning and 156.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2019-12-27 04:44:49,824 INFO L168 Benchmark]: RCFGBuilder took 491.26 ms. Allocated memory is still 202.4 MB. Free memory was 156.5 MB in the beginning and 132.9 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2019-12-27 04:44:49,826 INFO L168 Benchmark]: TraceAbstraction took 2934.04 ms. Allocated memory was 202.4 MB in the beginning and 246.9 MB in the end (delta: 44.6 MB). Free memory was 132.2 MB in the beginning and 98.6 MB in the end (delta: 33.7 MB). Peak memory consumption was 78.2 MB. Max. memory is 7.1 GB. [2019-12-27 04:44:49,836 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 690.19 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 101.9 MB in the beginning and 159.9 MB in the end (delta: -58.0 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 63.44 ms. Allocated memory is still 202.4 MB. Free memory was 159.9 MB in the beginning and 157.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.90 ms. Allocated memory is still 202.4 MB. Free memory was 157.9 MB in the beginning and 156.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 491.26 ms. Allocated memory is still 202.4 MB. Free memory was 156.5 MB in the beginning and 132.9 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2934.04 ms. Allocated memory was 202.4 MB in the beginning and 246.9 MB in the end (delta: 44.6 MB). Free memory was 132.2 MB in the beginning and 98.6 MB in the end (delta: 33.7 MB). Peak memory consumption was 78.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.1s, 84 ProgramPointsBefore, 53 ProgramPointsAfterwards, 103 TransitionsBefore, 65 TransitionsAfterwards, 3196 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 1143 VarBasedMoverChecksPositive, 48 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 11328 CheckedPairsTotal, 38 TotalNumberOfCompositions - PositiveResult [Line: 723]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 697]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 78 locations, 2 error locations. Result: SAFE, OverallTime: 2.8s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 564 SDtfs, 227 SDslu, 321 SDs, 0 SdLazy, 91 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=797occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 420 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 137 ConstructedInterpolants, 0 QuantifiedInterpolants, 4067 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...