/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-NoLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:48:23,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:48:23,168 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:48:23,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:48:23,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:48:23,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:48:23,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:48:23,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:48:23,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:48:23,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:48:23,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:48:23,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:48:23,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:48:23,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:48:23,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:48:23,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:48:23,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:48:23,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:48:23,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:48:23,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:48:23,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:48:23,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:48:23,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:48:23,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:48:23,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:48:23,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:48:23,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:48:23,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:48:23,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:48:23,208 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:48:23,208 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:48:23,209 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:48:23,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:48:23,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:48:23,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:48:23,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:48:23,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:48:23,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:48:23,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:48:23,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:48:23,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:48:23,218 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-NoLbe-McrStrategy.epf [2020-04-18 19:48:23,243 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:48:23,243 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:48:23,245 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:48:23,245 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:48:23,246 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:48:23,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:48:23,246 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:48:23,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:48:23,246 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:48:23,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:48:23,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:48:23,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:48:23,248 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:48:23,248 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:48:23,249 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:48:23,249 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:48:23,249 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:48:23,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:48:23,249 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:48:23,250 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:48:23,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:48:23,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:48:23,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:48:23,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:48:23,251 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:48:23,251 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:48:23,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:48:23,251 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:48:23,251 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:48:23,252 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:48:23,253 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:48:23,533 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:48:23,546 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:48:23,549 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:48:23,551 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:48:23,551 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:48:23,552 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.opt.i [2020-04-18 19:48:23,621 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d0fc7db5/b9552e854404439fba066146400cde7c/FLAGb7a5d3b71 [2020-04-18 19:48:24,136 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:48:24,136 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe024_tso.opt.i [2020-04-18 19:48:24,171 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d0fc7db5/b9552e854404439fba066146400cde7c/FLAGb7a5d3b71 [2020-04-18 19:48:24,451 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d0fc7db5/b9552e854404439fba066146400cde7c [2020-04-18 19:48:24,460 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:48:24,477 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:48:24,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:48:24,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:48:24,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:48:24,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:48:24" (1/1) ... [2020-04-18 19:48:24,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a67c07b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:48:24, skipping insertion in model container [2020-04-18 19:48:24,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:48:24" (1/1) ... [2020-04-18 19:48:24,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:48:24,562 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:48:25,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:48:25,111 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:48:25,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:48:25,263 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:48:25,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:48:25 WrapperNode [2020-04-18 19:48:25,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:48:25,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:48:25,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:48:25,265 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:48:25,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:48:25" (1/1) ... [2020-04-18 19:48:25,297 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:48:25" (1/1) ... [2020-04-18 19:48:25,323 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:48:25,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:48:25,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:48:25,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:48:25,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:48:25" (1/1) ... [2020-04-18 19:48:25,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:48:25" (1/1) ... [2020-04-18 19:48:25,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:48:25" (1/1) ... [2020-04-18 19:48:25,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:48:25" (1/1) ... [2020-04-18 19:48:25,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:48:25" (1/1) ... [2020-04-18 19:48:25,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:48:25" (1/1) ... [2020-04-18 19:48:25,348 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:48:25" (1/1) ... [2020-04-18 19:48:25,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:48:25,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:48:25,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:48:25,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:48:25,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:48:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:48:25,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:48:25,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:48:25,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:48:25,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:48:25,431 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:48:25,431 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:48:25,432 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:48:25,433 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:48:25,433 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:48:25,434 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:48:25,434 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:48:25,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:48:25,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:48:25,436 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 19:48:25,815 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:48:25,816 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:48:25,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:48:25 BoogieIcfgContainer [2020-04-18 19:48:25,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:48:25,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:48:25,822 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:48:25,825 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:48:25,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:48:24" (1/3) ... [2020-04-18 19:48:25,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52974980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:48:25, skipping insertion in model container [2020-04-18 19:48:25,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:48:25" (2/3) ... [2020-04-18 19:48:25,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52974980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:48:25, skipping insertion in model container [2020-04-18 19:48:25,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:48:25" (3/3) ... [2020-04-18 19:48:25,829 INFO L109 eAbstractionObserver]: Analyzing ICFG safe024_tso.opt.i [2020-04-18 19:48:25,840 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:48:25,841 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:48:25,848 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:48:25,849 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:48:25,883 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:48:25,883 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:48:25,883 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:48:25,884 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:48:25,885 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:48:25,886 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:48:25,887 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:48:25,887 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:48:25,888 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:48:25,888 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:48:25,888 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:48:25,889 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:48:25,890 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:48:25,890 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:48:25,890 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:48:25,890 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:48:25,891 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:48:25,891 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:48:25,898 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:48:25,898 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:48:25,899 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:48:25,899 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:48:25,918 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:48:25,919 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:48:25,919 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:48:25,919 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:48:25,930 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:48:25,931 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:48:25,931 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:48:25,931 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:48:25,944 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 19:48:25,961 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:48:25,962 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:48:25,962 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:48:25,962 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:48:25,962 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:48:25,963 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:48:25,963 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:48:25,963 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:48:25,976 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 19:48:26,581 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8473 states. [2020-04-18 19:48:26,583 INFO L276 IsEmpty]: Start isEmpty. Operand 8473 states. [2020-04-18 19:48:26,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:48:26,620 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:48:26,621 INFO L425 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:48:26,622 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:48:26,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:48:26,628 INFO L82 PathProgramCache]: Analyzing trace with hash 69348230, now seen corresponding path program 1 times [2020-04-18 19:48:26,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:48:26,636 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1805937674] [2020-04-18 19:48:26,654 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:48:26,672 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 37 transitions. [2020-04-18 19:48:26,675 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-04-18 19:48:26,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:48:26,676 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:48:26,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:48:26,676 INFO L82 PathProgramCache]: Analyzing trace with hash 69348230, now seen corresponding path program 2 times [2020-04-18 19:48:26,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:48:26,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207552611] [2020-04-18 19:48:26,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:48:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:48:27,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:48:27,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207552611] [2020-04-18 19:48:27,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:48:27,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:48:27,131 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:48:27,136 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:48:27,151 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 37 transitions. [2020-04-18 19:48:27,152 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:48:27,218 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:48:27,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:48:27,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:48:27,225 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 6 states. [2020-04-18 19:48:27,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:48:27,319 INFO L93 Difference]: Finished difference Result 38 states and 37 transitions. [2020-04-18 19:48:27,319 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 37 transitions. [2020-04-18 19:48:27,320 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:48:27,321 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1805937674] [2020-04-18 19:48:27,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:48:27,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:48:27,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1805937674] [2020-04-18 19:48:27,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 19:48:27,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:48:27,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:48:27,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:48:27,329 INFO L87 Difference]: Start difference. First operand 8473 states. Second operand 6 states. [2020-04-18 19:48:27,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:48:27,645 INFO L93 Difference]: Finished difference Result 11707 states and 40739 transitions. [2020-04-18 19:48:27,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:48:27,648 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-04-18 19:48:27,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:48:27,723 INFO L225 Difference]: With dead ends: 11707 [2020-04-18 19:48:27,723 INFO L226 Difference]: Without dead ends: 4112 [2020-04-18 19:48:27,727 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:48:27,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4112 states. [2020-04-18 19:48:28,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4112 to 4112. [2020-04-18 19:48:28,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4112 states. [2020-04-18 19:48:28,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4112 states to 4112 states and 13999 transitions. [2020-04-18 19:48:28,084 INFO L78 Accepts]: Start accepts. Automaton has 4112 states and 13999 transitions. Word has length 37 [2020-04-18 19:48:28,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:48:28,087 INFO L479 AbstractCegarLoop]: Abstraction has 4112 states and 13999 transitions. [2020-04-18 19:48:28,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 19:48:28,092 INFO L276 IsEmpty]: Start isEmpty. Operand 4112 states and 13999 transitions. [2020-04-18 19:48:28,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:48:28,109 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:48:28,114 INFO L425 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:48:28,115 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:48:28,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:48:28,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1620918905, now seen corresponding path program 1 times [2020-04-18 19:48:28,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:48:28,117 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [343062560] [2020-04-18 19:48:28,118 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:48:28,120 INFO L259 McrAutomatonBuilder]: Finished intersection with 64 states and 87 transitions. [2020-04-18 19:48:28,123 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2020-04-18 19:48:28,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:48:28,124 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:48:28,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:48:28,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1620918905, now seen corresponding path program 2 times [2020-04-18 19:48:28,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:48:28,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581474035] [2020-04-18 19:48:28,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:48:28,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:48:28,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:48:28,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581474035] [2020-04-18 19:48:28,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:48:28,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:48:28,354 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:48:28,359 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:48:28,367 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 63 transitions. [2020-04-18 19:48:28,367 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:48:28,472 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:48:28,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:48:28,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:48:28,473 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 7 states. [2020-04-18 19:48:28,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:48:28,575 INFO L93 Difference]: Finished difference Result 64 states and 87 transitions. [2020-04-18 19:48:28,575 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 87 transitions. [2020-04-18 19:48:28,575 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:48:28,576 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [343062560] [2020-04-18 19:48:28,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:48:28,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:48:28,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [343062560] [2020-04-18 19:48:28,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:48:28,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:48:28,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:48:28,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:48:28,579 INFO L87 Difference]: Start difference. First operand 4112 states and 13999 transitions. Second operand 7 states. [2020-04-18 19:48:28,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:48:28,768 INFO L93 Difference]: Finished difference Result 5442 states and 18338 transitions. [2020-04-18 19:48:28,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 19:48:28,769 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-04-18 19:48:28,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:48:28,790 INFO L225 Difference]: With dead ends: 5442 [2020-04-18 19:48:28,791 INFO L226 Difference]: Without dead ends: 2747 [2020-04-18 19:48:28,799 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-04-18 19:48:28,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2747 states. [2020-04-18 19:48:28,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2747 to 2747. [2020-04-18 19:48:28,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2747 states. [2020-04-18 19:48:28,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2747 states to 2747 states and 8965 transitions. [2020-04-18 19:48:28,912 INFO L78 Accepts]: Start accepts. Automaton has 2747 states and 8965 transitions. Word has length 39 [2020-04-18 19:48:28,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:48:28,913 INFO L479 AbstractCegarLoop]: Abstraction has 2747 states and 8965 transitions. [2020-04-18 19:48:28,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:48:28,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2747 states and 8965 transitions. [2020-04-18 19:48:28,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:48:28,923 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:48:28,924 INFO L425 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:48:28,924 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:48:28,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:48:28,924 INFO L82 PathProgramCache]: Analyzing trace with hash 291561388, now seen corresponding path program 1 times [2020-04-18 19:48:28,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:48:28,925 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [517860316] [2020-04-18 19:48:28,927 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:48:28,934 INFO L259 McrAutomatonBuilder]: Finished intersection with 193 states and 414 transitions. [2020-04-18 19:48:28,936 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states. [2020-04-18 19:48:28,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:48:28,937 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:48:28,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:48:28,937 INFO L82 PathProgramCache]: Analyzing trace with hash -963025664, now seen corresponding path program 2 times [2020-04-18 19:48:28,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:48:28,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352830899] [2020-04-18 19:48:28,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:48:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:48:29,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:48:29,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352830899] [2020-04-18 19:48:29,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:48:29,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:48:29,079 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:48:29,083 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:48:29,103 INFO L259 McrAutomatonBuilder]: Finished intersection with 127 states and 234 transitions. [2020-04-18 19:48:29,104 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:48:29,161 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:48:29,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:48:29,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:48:29,162 INFO L87 Difference]: Start difference. First operand 193 states. Second operand 7 states. [2020-04-18 19:48:29,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:48:29,619 INFO L93 Difference]: Finished difference Result 210 states and 430 transitions. [2020-04-18 19:48:29,619 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 430 transitions. [2020-04-18 19:48:29,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:48:29,620 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:48:29,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:48:29,621 INFO L82 PathProgramCache]: Analyzing trace with hash 291561388, now seen corresponding path program 3 times [2020-04-18 19:48:29,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:48:29,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422093754] [2020-04-18 19:48:29,624 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:48:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:48:29,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:48:29,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422093754] [2020-04-18 19:48:29,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:48:29,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:48:29,776 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:48:29,781 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:48:29,794 INFO L259 McrAutomatonBuilder]: Finished intersection with 106 states and 186 transitions. [2020-04-18 19:48:29,794 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:48:29,885 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 17 times. [2020-04-18 19:48:29,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:48:29,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2020-04-18 19:48:29,886 INFO L87 Difference]: Start difference. First operand 210 states and 430 transitions. Second operand 6 states. [2020-04-18 19:48:29,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:48:29,953 INFO L93 Difference]: Finished difference Result 210 states and 430 transitions. [2020-04-18 19:48:29,953 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 430 transitions. [2020-04-18 19:48:29,953 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:48:29,954 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [517860316] [2020-04-18 19:48:29,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:48:29,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:48:29,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [517860316] [2020-04-18 19:48:29,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 19:48:29,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:48:29,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:48:29,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2020-04-18 19:48:29,957 INFO L87 Difference]: Start difference. First operand 2747 states and 8965 transitions. Second operand 11 states. [2020-04-18 19:48:30,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:48:30,485 INFO L93 Difference]: Finished difference Result 3451 states and 11115 transitions. [2020-04-18 19:48:30,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-04-18 19:48:30,489 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2020-04-18 19:48:30,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:48:30,510 INFO L225 Difference]: With dead ends: 3451 [2020-04-18 19:48:30,511 INFO L226 Difference]: Without dead ends: 2499 [2020-04-18 19:48:30,513 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=272, Invalid=1134, Unknown=0, NotChecked=0, Total=1406 [2020-04-18 19:48:30,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2499 states. [2020-04-18 19:48:30,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2499 to 2499. [2020-04-18 19:48:30,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2499 states. [2020-04-18 19:48:30,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2499 states to 2499 states and 8033 transitions. [2020-04-18 19:48:30,628 INFO L78 Accepts]: Start accepts. Automaton has 2499 states and 8033 transitions. Word has length 42 [2020-04-18 19:48:30,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:48:30,628 INFO L479 AbstractCegarLoop]: Abstraction has 2499 states and 8033 transitions. [2020-04-18 19:48:30,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 19:48:30,629 INFO L276 IsEmpty]: Start isEmpty. Operand 2499 states and 8033 transitions. [2020-04-18 19:48:30,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:48:30,734 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:48:30,734 INFO L425 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:48:30,734 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:48:30,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:48:30,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1278031789, now seen corresponding path program 1 times [2020-04-18 19:48:30,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:48:30,735 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1545343087] [2020-04-18 19:48:30,737 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:48:30,743 INFO L259 McrAutomatonBuilder]: Finished intersection with 236 states and 523 transitions. [2020-04-18 19:48:30,745 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states. [2020-04-18 19:48:30,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:48:30,746 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:48:30,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:48:30,747 INFO L82 PathProgramCache]: Analyzing trace with hash 908268339, now seen corresponding path program 2 times [2020-04-18 19:48:30,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:48:30,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813125148] [2020-04-18 19:48:30,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:48:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:48:30,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:48:30,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813125148] [2020-04-18 19:48:30,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:48:30,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:48:30,889 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:48:30,894 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:48:30,913 INFO L259 McrAutomatonBuilder]: Finished intersection with 138 states and 255 transitions. [2020-04-18 19:48:30,913 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:48:30,969 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 17 times. [2020-04-18 19:48:30,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:48:30,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:48:30,970 INFO L87 Difference]: Start difference. First operand 236 states. Second operand 7 states. [2020-04-18 19:48:31,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:48:31,175 INFO L93 Difference]: Finished difference Result 292 states and 609 transitions. [2020-04-18 19:48:31,175 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 609 transitions. [2020-04-18 19:48:31,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:48:31,176 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:48:31,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:48:31,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1145761287, now seen corresponding path program 3 times [2020-04-18 19:48:31,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:48:31,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260128576] [2020-04-18 19:48:31,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:48:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:48:31,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:48:31,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260128576] [2020-04-18 19:48:31,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:48:31,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:48:31,310 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:48:31,315 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:48:31,330 INFO L259 McrAutomatonBuilder]: Finished intersection with 127 states and 235 transitions. [2020-04-18 19:48:31,330 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:48:31,433 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 22 times. [2020-04-18 19:48:31,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:48:31,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-04-18 19:48:31,434 INFO L87 Difference]: Start difference. First operand 292 states and 609 transitions. Second operand 7 states. [2020-04-18 19:48:31,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:48:31,560 INFO L93 Difference]: Finished difference Result 292 states and 609 transitions. [2020-04-18 19:48:31,560 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 609 transitions. [2020-04-18 19:48:31,561 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:48:31,562 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1545343087] [2020-04-18 19:48:31,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:48:31,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:48:31,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1545343087] [2020-04-18 19:48:31,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 19:48:31,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:48:31,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 19:48:31,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-04-18 19:48:31,564 INFO L87 Difference]: Start difference. First operand 2499 states and 8033 transitions. Second operand 12 states. [2020-04-18 19:48:31,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:48:31,908 INFO L93 Difference]: Finished difference Result 2589 states and 8084 transitions. [2020-04-18 19:48:31,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 19:48:31,909 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 43 [2020-04-18 19:48:31,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:48:31,925 INFO L225 Difference]: With dead ends: 2589 [2020-04-18 19:48:31,925 INFO L226 Difference]: Without dead ends: 1797 [2020-04-18 19:48:31,926 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2020-04-18 19:48:31,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2020-04-18 19:48:31,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1797. [2020-04-18 19:48:31,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1797 states. [2020-04-18 19:48:31,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 5504 transitions. [2020-04-18 19:48:31,988 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 5504 transitions. Word has length 43 [2020-04-18 19:48:31,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:48:31,989 INFO L479 AbstractCegarLoop]: Abstraction has 1797 states and 5504 transitions. [2020-04-18 19:48:31,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 19:48:31,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 5504 transitions. [2020-04-18 19:48:31,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:48:31,993 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:48:31,994 INFO L425 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:48:31,994 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:48:31,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:48:31,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1326422702, now seen corresponding path program 1 times [2020-04-18 19:48:31,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:48:31,995 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2085386172] [2020-04-18 19:48:31,996 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:48:32,005 INFO L259 McrAutomatonBuilder]: Finished intersection with 366 states and 877 transitions. [2020-04-18 19:48:32,008 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states. [2020-04-18 19:48:32,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:48:32,010 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:48:32,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:48:32,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1823799406, now seen corresponding path program 2 times [2020-04-18 19:48:32,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:48:32,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254219042] [2020-04-18 19:48:32,011 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:48:32,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:48:32,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:48:32,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254219042] [2020-04-18 19:48:32,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:48:32,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:48:32,204 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:48:32,210 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:48:32,232 INFO L259 McrAutomatonBuilder]: Finished intersection with 124 states and 211 transitions. [2020-04-18 19:48:32,233 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:48:32,302 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 18 times. [2020-04-18 19:48:32,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:48:32,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:48:32,303 INFO L87 Difference]: Start difference. First operand 366 states. Second operand 8 states. [2020-04-18 19:48:32,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:48:32,542 INFO L93 Difference]: Finished difference Result 468 states and 1092 transitions. [2020-04-18 19:48:32,542 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1092 transitions. [2020-04-18 19:48:32,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:48:32,544 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:48:32,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:48:32,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1710985062, now seen corresponding path program 3 times [2020-04-18 19:48:32,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:48:32,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198237241] [2020-04-18 19:48:32,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:48:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:48:32,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:48:32,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198237241] [2020-04-18 19:48:32,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:48:32,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:48:32,678 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:48:32,682 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:48:32,704 INFO L259 McrAutomatonBuilder]: Finished intersection with 135 states and 241 transitions. [2020-04-18 19:48:32,704 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:48:32,802 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 26 times. [2020-04-18 19:48:32,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:48:32,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2020-04-18 19:48:32,803 INFO L87 Difference]: Start difference. First operand 468 states and 1092 transitions. Second operand 7 states. [2020-04-18 19:48:33,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:48:33,007 INFO L93 Difference]: Finished difference Result 490 states and 1112 transitions. [2020-04-18 19:48:33,007 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1112 transitions. [2020-04-18 19:48:33,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:48:33,008 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:48:33,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:48:33,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1326422702, now seen corresponding path program 4 times [2020-04-18 19:48:33,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:48:33,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361396820] [2020-04-18 19:48:33,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:48:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:48:33,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:48:33,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361396820] [2020-04-18 19:48:33,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:48:33,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:48:33,119 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:48:33,122 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:48:33,131 INFO L259 McrAutomatonBuilder]: Finished intersection with 72 states and 100 transitions. [2020-04-18 19:48:33,131 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:48:33,169 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 19:48:33,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:48:33,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2020-04-18 19:48:33,170 INFO L87 Difference]: Start difference. First operand 490 states and 1112 transitions. Second operand 8 states. [2020-04-18 19:48:33,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:48:33,444 INFO L93 Difference]: Finished difference Result 490 states and 1112 transitions. [2020-04-18 19:48:33,444 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1112 transitions. [2020-04-18 19:48:33,445 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:48:33,445 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2085386172] [2020-04-18 19:48:33,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:48:33,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:48:33,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2085386172] [2020-04-18 19:48:33,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 19:48:33,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:48:33,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 19:48:33,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1092, Unknown=0, NotChecked=0, Total=1332 [2020-04-18 19:48:33,448 INFO L87 Difference]: Start difference. First operand 1797 states and 5504 transitions. Second operand 15 states. [2020-04-18 19:48:33,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:48:33,879 INFO L93 Difference]: Finished difference Result 1446 states and 4271 transitions. [2020-04-18 19:48:33,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-18 19:48:33,880 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2020-04-18 19:48:33,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:48:33,887 INFO L225 Difference]: With dead ends: 1446 [2020-04-18 19:48:33,887 INFO L226 Difference]: Without dead ends: 1014 [2020-04-18 19:48:33,888 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 169 SyntacticMatches, 7 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=345, Invalid=1635, Unknown=0, NotChecked=0, Total=1980 [2020-04-18 19:48:33,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2020-04-18 19:48:33,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 1014. [2020-04-18 19:48:33,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1014 states. [2020-04-18 19:48:33,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 2894 transitions. [2020-04-18 19:48:33,916 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 2894 transitions. Word has length 45 [2020-04-18 19:48:33,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:48:33,916 INFO L479 AbstractCegarLoop]: Abstraction has 1014 states and 2894 transitions. [2020-04-18 19:48:33,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 19:48:33,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 2894 transitions. [2020-04-18 19:48:33,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:48:33,919 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:48:33,919 INFO L425 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:48:33,919 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:48:33,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:48:33,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1128917424, now seen corresponding path program 1 times [2020-04-18 19:48:33,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:48:33,920 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1041977751] [2020-04-18 19:48:33,922 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:48:33,966 INFO L259 McrAutomatonBuilder]: Finished intersection with 1762 states and 5713 transitions. [2020-04-18 19:48:33,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states. [2020-04-18 19:48:33,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:48:33,985 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:48:33,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:48:33,985 INFO L82 PathProgramCache]: Analyzing trace with hash -2021304684, now seen corresponding path program 2 times [2020-04-18 19:48:33,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:48:33,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894508650] [2020-04-18 19:48:33,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:48:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:48:34,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:48:34,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894508650] [2020-04-18 19:48:34,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:48:34,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:48:34,100 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:48:34,104 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:48:34,141 INFO L259 McrAutomatonBuilder]: Finished intersection with 244 states and 525 transitions. [2020-04-18 19:48:34,141 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:48:34,205 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 19 times. [2020-04-18 19:48:34,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:48:34,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:48:34,206 INFO L87 Difference]: Start difference. First operand 1762 states. Second operand 8 states. [2020-04-18 19:48:34,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:48:34,645 INFO L93 Difference]: Finished difference Result 3307 states and 10307 transitions. [2020-04-18 19:48:34,645 INFO L276 IsEmpty]: Start isEmpty. Operand 3307 states and 10307 transitions. [2020-04-18 19:48:34,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:48:34,652 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:48:34,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:48:34,653 INFO L82 PathProgramCache]: Analyzing trace with hash 841633428, now seen corresponding path program 3 times [2020-04-18 19:48:34,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:48:34,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603722547] [2020-04-18 19:48:34,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:48:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:48:34,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:48:34,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603722547] [2020-04-18 19:48:34,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:48:34,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:48:34,748 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:48:34,752 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:48:34,798 INFO L259 McrAutomatonBuilder]: Finished intersection with 282 states and 621 transitions. [2020-04-18 19:48:34,798 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:48:34,836 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 25 times. [2020-04-18 19:48:34,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:48:34,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2020-04-18 19:48:34,837 INFO L87 Difference]: Start difference. First operand 3307 states and 10307 transitions. Second operand 7 states. [2020-04-18 19:48:35,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:48:35,068 INFO L93 Difference]: Finished difference Result 4141 states and 12630 transitions. [2020-04-18 19:48:35,069 INFO L276 IsEmpty]: Start isEmpty. Operand 4141 states and 12630 transitions. [2020-04-18 19:48:35,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:48:35,077 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:48:35,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:48:35,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1439089768, now seen corresponding path program 4 times [2020-04-18 19:48:35,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:48:35,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265020739] [2020-04-18 19:48:35,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:48:35,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:48:35,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:48:35,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265020739] [2020-04-18 19:48:35,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:48:35,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:48:35,186 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:48:35,191 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:48:35,225 INFO L259 McrAutomatonBuilder]: Finished intersection with 243 states and 519 transitions. [2020-04-18 19:48:35,226 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:48:35,375 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 22 times. [2020-04-18 19:48:35,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:48:35,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=921, Unknown=0, NotChecked=0, Total=1122 [2020-04-18 19:48:35,377 INFO L87 Difference]: Start difference. First operand 4141 states and 12630 transitions. Second operand 8 states. [2020-04-18 19:48:35,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:48:35,794 INFO L93 Difference]: Finished difference Result 4196 states and 12680 transitions. [2020-04-18 19:48:35,794 INFO L276 IsEmpty]: Start isEmpty. Operand 4196 states and 12680 transitions. [2020-04-18 19:48:35,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:48:35,803 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:48:35,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:48:35,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1487587100, now seen corresponding path program 5 times [2020-04-18 19:48:35,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:48:35,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895032490] [2020-04-18 19:48:35,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:48:35,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:48:35,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:48:35,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895032490] [2020-04-18 19:48:35,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:48:35,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:48:35,913 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:48:35,920 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:48:36,015 INFO L259 McrAutomatonBuilder]: Finished intersection with 124 states and 230 transitions. [2020-04-18 19:48:36,015 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:48:36,131 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 19:48:36,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:48:36,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=1775, Unknown=0, NotChecked=0, Total=2070 [2020-04-18 19:48:36,132 INFO L87 Difference]: Start difference. First operand 4196 states and 12680 transitions. Second operand 8 states. [2020-04-18 19:48:36,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:48:36,428 INFO L93 Difference]: Finished difference Result 5244 states and 15349 transitions. [2020-04-18 19:48:36,428 INFO L276 IsEmpty]: Start isEmpty. Operand 5244 states and 15349 transitions. [2020-04-18 19:48:36,442 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:48:36,442 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1041977751] [2020-04-18 19:48:36,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:48:36,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:48:36,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1041977751] [2020-04-18 19:48:36,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-04-18 19:48:36,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:48:36,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-18 19:48:36,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=2385, Unknown=0, NotChecked=0, Total=2756 [2020-04-18 19:48:36,445 INFO L87 Difference]: Start difference. First operand 1014 states and 2894 transitions. Second operand 18 states. [2020-04-18 19:48:37,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:48:37,432 INFO L93 Difference]: Finished difference Result 1024 states and 2924 transitions. [2020-04-18 19:48:37,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-04-18 19:48:37,432 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 49 [2020-04-18 19:48:37,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:48:37,433 INFO L225 Difference]: With dead ends: 1024 [2020-04-18 19:48:37,433 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:48:37,436 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2023 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=892, Invalid=5428, Unknown=0, NotChecked=0, Total=6320 [2020-04-18 19:48:37,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:48:37,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:48:37,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:48:37,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:48:37,436 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2020-04-18 19:48:37,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:48:37,437 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:48:37,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-04-18 19:48:37,437 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:48:37,437 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:48:37,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:48:37 BasicIcfg [2020-04-18 19:48:37,442 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:48:37,445 INFO L168 Benchmark]: Toolchain (without parser) took 12981.99 ms. Allocated memory was 144.7 MB in the beginning and 445.1 MB in the end (delta: 300.4 MB). Free memory was 100.8 MB in the beginning and 126.4 MB in the end (delta: -25.7 MB). Peak memory consumption was 274.7 MB. Max. memory is 7.1 GB. [2020-04-18 19:48:37,446 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 19:48:37,446 INFO L168 Benchmark]: CACSL2BoogieTranslator took 785.16 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 98.8 MB in the beginning and 156.8 MB in the end (delta: -58.0 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-04-18 19:48:37,447 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.66 ms. Allocated memory is still 202.4 MB. Free memory was 156.8 MB in the beginning and 154.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 19:48:37,448 INFO L168 Benchmark]: Boogie Preprocessor took 28.48 ms. Allocated memory is still 202.4 MB. Free memory was 154.7 MB in the beginning and 153.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 19:48:37,448 INFO L168 Benchmark]: RCFGBuilder took 468.26 ms. Allocated memory is still 202.4 MB. Free memory was 153.3 MB in the beginning and 130.9 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-04-18 19:48:37,449 INFO L168 Benchmark]: TraceAbstraction took 11620.36 ms. Allocated memory was 202.4 MB in the beginning and 445.1 MB in the end (delta: 242.7 MB). Free memory was 130.2 MB in the beginning and 126.4 MB in the end (delta: 3.8 MB). Peak memory consumption was 246.5 MB. Max. memory is 7.1 GB. [2020-04-18 19:48:37,453 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 785.16 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 98.8 MB in the beginning and 156.8 MB in the end (delta: -58.0 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.66 ms. Allocated memory is still 202.4 MB. Free memory was 156.8 MB in the beginning and 154.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.48 ms. Allocated memory is still 202.4 MB. Free memory was 154.7 MB in the beginning and 153.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 468.26 ms. Allocated memory is still 202.4 MB. Free memory was 153.3 MB in the beginning and 130.9 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11620.36 ms. Allocated memory was 202.4 MB in the beginning and 445.1 MB in the end (delta: 242.7 MB). Free memory was 130.2 MB in the beginning and 126.4 MB in the end (delta: 3.8 MB). Peak memory consumption was 246.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.6s, HoareTripleCheckerStatistics: 545 SDtfs, 1701 SDslu, 3223 SDs, 0 SdLazy, 637 SolverSat, 144 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 963 GetRequests, 749 SyntacticMatches, 7 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3339 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8473occurred 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: 0.6s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...