/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/safe020_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:40:44,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:40:44,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:40:44,166 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:40:44,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:40:44,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:40:44,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:40:44,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:40:44,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:40:44,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:40:44,181 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:40:44,183 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:40:44,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:40:44,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:40:44,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:40:44,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:40:44,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:40:44,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:40:44,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:40:44,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:40:44,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:40:44,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:40:44,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:40:44,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:40:44,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:40:44,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:40:44,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:40:44,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:40:44,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:40:44,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:40:44,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:40:44,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:40:44,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:40:44,224 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:40:44,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:40:44,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:40:44,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:40:44,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:40:44,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:40:44,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:40:44,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:40:44,234 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 19:40:44,273 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:40:44,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:40:44,277 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:40:44,277 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:40:44,277 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:40:44,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:40:44,278 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:40:44,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:40:44,282 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:40:44,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:40:44,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:40:44,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:40:44,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:40:44,283 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:40:44,283 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:40:44,284 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:40:44,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:40:44,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:40:44,284 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:40:44,284 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:40:44,285 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:40:44,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:40:44,288 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:40:44,288 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:40:44,289 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:40:44,289 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:40:44,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:40:44,289 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:40:44,289 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:40:44,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:40:44,290 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:40:44,606 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:40:44,620 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:40:44,623 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:40:44,625 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:40:44,625 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:40:44,626 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i [2020-04-18 19:40:44,688 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/178b9f566/c8b9d0567f854012b5996d3683b5c6b5/FLAG43a1add31 [2020-04-18 19:40:45,237 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:40:45,238 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i [2020-04-18 19:40:45,273 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/178b9f566/c8b9d0567f854012b5996d3683b5c6b5/FLAG43a1add31 [2020-04-18 19:40:45,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/178b9f566/c8b9d0567f854012b5996d3683b5c6b5 [2020-04-18 19:40:45,576 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:40:45,597 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:40:45,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:40:45,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:40:45,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:40:45,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:40:45" (1/1) ... [2020-04-18 19:40:45,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@574de9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:45, skipping insertion in model container [2020-04-18 19:40:45,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:40:45" (1/1) ... [2020-04-18 19:40:45,615 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:40:45,665 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:40:46,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:40:46,122 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:40:46,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:40:46,271 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:40:46,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:46 WrapperNode [2020-04-18 19:40:46,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:40:46,273 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:40:46,273 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:40:46,273 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:40:46,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:46" (1/1) ... [2020-04-18 19:40:46,324 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:46" (1/1) ... [2020-04-18 19:40:46,353 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:40:46,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:40:46,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:40:46,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:40:46,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:46" (1/1) ... [2020-04-18 19:40:46,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:46" (1/1) ... [2020-04-18 19:40:46,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:46" (1/1) ... [2020-04-18 19:40:46,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:46" (1/1) ... [2020-04-18 19:40:46,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:46" (1/1) ... [2020-04-18 19:40:46,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:46" (1/1) ... [2020-04-18 19:40:46,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:46" (1/1) ... [2020-04-18 19:40:46,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:40:46,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:40:46,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:40:46,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:40:46,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:40:46,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:40:46,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:40:46,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:40:46,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:40:46,464 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:40:46,464 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:40:46,465 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:40:46,465 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:40:46,465 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:40:46,466 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:40:46,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:40:46,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:40:46,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:40:46,467 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 19:40:46,880 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:40:46,880 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:40:46,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:40:46 BoogieIcfgContainer [2020-04-18 19:40:46,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:40:46,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:40:46,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:40:46,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:40:46,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:40:45" (1/3) ... [2020-04-18 19:40:46,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490d60bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:40:46, skipping insertion in model container [2020-04-18 19:40:46,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:46" (2/3) ... [2020-04-18 19:40:46,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490d60bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:40:46, skipping insertion in model container [2020-04-18 19:40:46,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:40:46" (3/3) ... [2020-04-18 19:40:46,901 INFO L109 eAbstractionObserver]: Analyzing ICFG safe020_tso.opt.i [2020-04-18 19:40:46,909 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:40:46,910 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:40:46,916 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:40:46,917 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:40:46,943 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:46,943 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:46,943 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:46,944 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:46,944 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:46,945 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:46,945 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:46,945 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:46,946 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:46,946 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:46,946 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:46,947 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:46,947 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:46,947 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:46,948 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:46,948 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:46,948 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:46,949 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:46,953 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:46,953 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:46,953 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:46,954 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:46,965 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:46,966 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:46,966 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:46,966 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:46,969 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:46,970 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:46,970 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:46,970 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:46,994 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 19:40:47,013 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:40:47,013 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:40:47,013 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:40:47,013 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:40:47,014 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:40:47,014 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:40:47,014 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:40:47,014 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:40:47,028 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 76 places, 68 transitions, 151 flow [2020-04-18 19:40:47,441 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 7267 states. [2020-04-18 19:40:47,444 INFO L276 IsEmpty]: Start isEmpty. Operand 7267 states. [2020-04-18 19:40:47,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-04-18 19:40:47,471 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:40:47,472 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] [2020-04-18 19:40:47,472 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:40:47,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:47,481 INFO L82 PathProgramCache]: Analyzing trace with hash -42514807, now seen corresponding path program 1 times [2020-04-18 19:40:47,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:40:47,489 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [470365255] [2020-04-18 19:40:47,505 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:47,520 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 35 transitions. [2020-04-18 19:40:47,522 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-04-18 19:40:47,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-04-18 19:40:47,523 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:40:47,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:47,524 INFO L82 PathProgramCache]: Analyzing trace with hash -42514807, now seen corresponding path program 2 times [2020-04-18 19:40:47,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:47,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832318389] [2020-04-18 19:40:47,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:48,065 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 19:40:48,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832318389] [2020-04-18 19:40:48,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:48,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:40:48,069 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:48,072 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:48,080 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 35 transitions. [2020-04-18 19:40:48,080 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:48,143 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:40:48,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:40:48,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:40:48,150 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 6 states. [2020-04-18 19:40:48,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:48,268 INFO L93 Difference]: Finished difference Result 36 states and 35 transitions. [2020-04-18 19:40:48,269 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 35 transitions. [2020-04-18 19:40:48,269 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:40:48,271 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [470365255] [2020-04-18 19:40:48,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:40:48,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:40:48,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [470365255] [2020-04-18 19:40:48,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 19:40:48,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:40:48,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:40:48,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:40:48,283 INFO L87 Difference]: Start difference. First operand 7267 states. Second operand 6 states. [2020-04-18 19:40:48,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:48,715 INFO L93 Difference]: Finished difference Result 15559 states and 53305 transitions. [2020-04-18 19:40:48,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:40:48,717 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-04-18 19:40:48,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:40:48,775 INFO L225 Difference]: With dead ends: 15559 [2020-04-18 19:40:48,775 INFO L226 Difference]: Without dead ends: 4777 [2020-04-18 19:40:48,777 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 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 19:40:48,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4777 states. [2020-04-18 19:40:48,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4777 to 4057. [2020-04-18 19:40:48,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4057 states. [2020-04-18 19:40:49,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4057 states to 4057 states and 13594 transitions. [2020-04-18 19:40:49,009 INFO L78 Accepts]: Start accepts. Automaton has 4057 states and 13594 transitions. Word has length 35 [2020-04-18 19:40:49,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:40:49,011 INFO L479 AbstractCegarLoop]: Abstraction has 4057 states and 13594 transitions. [2020-04-18 19:40:49,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 19:40:49,011 INFO L276 IsEmpty]: Start isEmpty. Operand 4057 states and 13594 transitions. [2020-04-18 19:40:49,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:40:49,019 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:40:49,019 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 19:40:49,019 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:40:49,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:49,020 INFO L82 PathProgramCache]: Analyzing trace with hash 638524266, now seen corresponding path program 1 times [2020-04-18 19:40:49,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:40:49,020 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [560722215] [2020-04-18 19:40:49,021 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:49,023 INFO L259 McrAutomatonBuilder]: Finished intersection with 62 states and 85 transitions. [2020-04-18 19:40:49,024 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-04-18 19:40:49,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:40:49,024 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:40:49,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:49,025 INFO L82 PathProgramCache]: Analyzing trace with hash 638524266, now seen corresponding path program 2 times [2020-04-18 19:40:49,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:49,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932090007] [2020-04-18 19:40:49,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:49,182 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 19:40:49,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932090007] [2020-04-18 19:40:49,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:49,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:40:49,183 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:49,187 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:49,191 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 61 transitions. [2020-04-18 19:40:49,191 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:49,305 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:40:49,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:40:49,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:40:49,310 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 7 states. [2020-04-18 19:40:49,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:49,437 INFO L93 Difference]: Finished difference Result 62 states and 85 transitions. [2020-04-18 19:40:49,437 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 85 transitions. [2020-04-18 19:40:49,438 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:40:49,438 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [560722215] [2020-04-18 19:40:49,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:40:49,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:40:49,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [560722215] [2020-04-18 19:40:49,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:40:49,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:40:49,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:40:49,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:40:49,441 INFO L87 Difference]: Start difference. First operand 4057 states and 13594 transitions. Second operand 7 states. [2020-04-18 19:40:49,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:49,802 INFO L93 Difference]: Finished difference Result 6543 states and 21535 transitions. [2020-04-18 19:40:49,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 19:40:49,803 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-04-18 19:40:49,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:40:49,839 INFO L225 Difference]: With dead ends: 6543 [2020-04-18 19:40:49,839 INFO L226 Difference]: Without dead ends: 4935 [2020-04-18 19:40:49,843 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-04-18 19:40:49,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4935 states. [2020-04-18 19:40:49,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4935 to 4035. [2020-04-18 19:40:49,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4035 states. [2020-04-18 19:40:50,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4035 states to 4035 states and 13455 transitions. [2020-04-18 19:40:50,009 INFO L78 Accepts]: Start accepts. Automaton has 4035 states and 13455 transitions. Word has length 37 [2020-04-18 19:40:50,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:40:50,011 INFO L479 AbstractCegarLoop]: Abstraction has 4035 states and 13455 transitions. [2020-04-18 19:40:50,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:40:50,011 INFO L276 IsEmpty]: Start isEmpty. Operand 4035 states and 13455 transitions. [2020-04-18 19:40:50,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:40:50,025 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:40:50,025 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 19:40:50,025 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:40:50,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:50,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1941266888, now seen corresponding path program 1 times [2020-04-18 19:40:50,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:40:50,027 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2048948068] [2020-04-18 19:40:50,029 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:50,031 INFO L259 McrAutomatonBuilder]: Finished intersection with 78 states and 117 transitions. [2020-04-18 19:40:50,034 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-04-18 19:40:50,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:40:50,097 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:40:50,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:50,099 INFO L82 PathProgramCache]: Analyzing trace with hash 300973254, now seen corresponding path program 2 times [2020-04-18 19:40:50,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:50,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123586172] [2020-04-18 19:40:50,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:50,287 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 19:40:50,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123586172] [2020-04-18 19:40:50,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:50,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:40:50,289 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:50,292 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:50,298 INFO L259 McrAutomatonBuilder]: Finished intersection with 63 states and 87 transitions. [2020-04-18 19:40:50,298 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:50,358 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:40:50,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:40:50,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:40:50,359 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 6 states. [2020-04-18 19:40:50,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:50,514 INFO L93 Difference]: Finished difference Result 84 states and 122 transitions. [2020-04-18 19:40:50,514 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 122 transitions. [2020-04-18 19:40:50,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:40:50,515 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:40:50,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:50,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1941266888, now seen corresponding path program 3 times [2020-04-18 19:40:50,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:50,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371851649] [2020-04-18 19:40:50,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:50,671 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 19:40:50,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371851649] [2020-04-18 19:40:50,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:50,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:40:50,673 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:50,676 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:50,682 INFO L259 McrAutomatonBuilder]: Finished intersection with 66 states and 93 transitions. [2020-04-18 19:40:50,683 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:50,696 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:40:50,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:40:50,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-04-18 19:40:50,697 INFO L87 Difference]: Start difference. First operand 84 states and 122 transitions. Second operand 6 states. [2020-04-18 19:40:50,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:50,756 INFO L93 Difference]: Finished difference Result 84 states and 122 transitions. [2020-04-18 19:40:50,757 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 122 transitions. [2020-04-18 19:40:50,757 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:40:50,757 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2048948068] [2020-04-18 19:40:50,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:40:50,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:40:50,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2048948068] [2020-04-18 19:40:50,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:40:50,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:40:50,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:40:50,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:40:50,759 INFO L87 Difference]: Start difference. First operand 4035 states and 13455 transitions. Second operand 7 states. [2020-04-18 19:40:50,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:50,870 INFO L93 Difference]: Finished difference Result 5619 states and 18429 transitions. [2020-04-18 19:40:50,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:40:50,879 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-04-18 19:40:50,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:40:50,915 INFO L225 Difference]: With dead ends: 5619 [2020-04-18 19:40:50,916 INFO L226 Difference]: Without dead ends: 4395 [2020-04-18 19:40:50,916 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:40:50,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4395 states. [2020-04-18 19:40:51,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4395 to 3675. [2020-04-18 19:40:51,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3675 states. [2020-04-18 19:40:51,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3675 states to 3675 states and 12147 transitions. [2020-04-18 19:40:51,054 INFO L78 Accepts]: Start accepts. Automaton has 3675 states and 12147 transitions. Word has length 37 [2020-04-18 19:40:51,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:40:51,054 INFO L479 AbstractCegarLoop]: Abstraction has 3675 states and 12147 transitions. [2020-04-18 19:40:51,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:40:51,055 INFO L276 IsEmpty]: Start isEmpty. Operand 3675 states and 12147 transitions. [2020-04-18 19:40:51,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:40:51,064 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:40:51,064 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 19:40:51,064 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:40:51,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:51,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1831915989, now seen corresponding path program 1 times [2020-04-18 19:40:51,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:40:51,065 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [155486702] [2020-04-18 19:40:51,066 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:51,069 INFO L259 McrAutomatonBuilder]: Finished intersection with 148 states and 303 transitions. [2020-04-18 19:40:51,070 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2020-04-18 19:40:51,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:40:51,071 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:40:51,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:51,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1831915989, now seen corresponding path program 2 times [2020-04-18 19:40:51,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:51,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146996817] [2020-04-18 19:40:51,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:51,207 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 19:40:51,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146996817] [2020-04-18 19:40:51,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:51,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:40:51,209 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:51,215 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:51,227 INFO L259 McrAutomatonBuilder]: Finished intersection with 86 states and 143 transitions. [2020-04-18 19:40:51,227 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:51,361 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:40:51,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:40:51,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:40:51,362 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 7 states. [2020-04-18 19:40:51,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:51,416 INFO L93 Difference]: Finished difference Result 148 states and 303 transitions. [2020-04-18 19:40:51,416 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 303 transitions. [2020-04-18 19:40:51,417 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:40:51,417 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [155486702] [2020-04-18 19:40:51,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:40:51,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:40:51,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [155486702] [2020-04-18 19:40:51,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:40:51,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:40:51,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:40:51,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:40:51,419 INFO L87 Difference]: Start difference. First operand 3675 states and 12147 transitions. Second operand 7 states. [2020-04-18 19:40:51,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:51,627 INFO L93 Difference]: Finished difference Result 5035 states and 16395 transitions. [2020-04-18 19:40:51,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:40:51,628 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-04-18 19:40:51,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:40:51,648 INFO L225 Difference]: With dead ends: 5035 [2020-04-18 19:40:51,648 INFO L226 Difference]: Without dead ends: 4155 [2020-04-18 19:40:51,649 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:40:51,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4155 states. [2020-04-18 19:40:51,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4155 to 3379. [2020-04-18 19:40:51,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3379 states. [2020-04-18 19:40:51,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3379 states to 3379 states and 11125 transitions. [2020-04-18 19:40:51,762 INFO L78 Accepts]: Start accepts. Automaton has 3379 states and 11125 transitions. Word has length 39 [2020-04-18 19:40:51,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:40:51,763 INFO L479 AbstractCegarLoop]: Abstraction has 3379 states and 11125 transitions. [2020-04-18 19:40:51,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:40:51,763 INFO L276 IsEmpty]: Start isEmpty. Operand 3379 states and 11125 transitions. [2020-04-18 19:40:51,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:40:51,771 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:40:51,771 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 19:40:51,771 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:40:51,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:51,772 INFO L82 PathProgramCache]: Analyzing trace with hash -710180247, now seen corresponding path program 1 times [2020-04-18 19:40:51,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:40:51,772 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2132115304] [2020-04-18 19:40:51,773 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:51,776 INFO L259 McrAutomatonBuilder]: Finished intersection with 156 states and 319 transitions. [2020-04-18 19:40:51,777 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2020-04-18 19:40:51,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:40:51,778 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:40:51,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:51,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1944493415, now seen corresponding path program 2 times [2020-04-18 19:40:51,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:51,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765585646] [2020-04-18 19:40:51,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:51,885 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 19:40:51,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765585646] [2020-04-18 19:40:51,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:51,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:40:51,887 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:51,893 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:51,907 INFO L259 McrAutomatonBuilder]: Finished intersection with 91 states and 153 transitions. [2020-04-18 19:40:51,908 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:51,963 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 19:40:51,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:40:51,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:40:51,964 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 7 states. [2020-04-18 19:40:52,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:52,105 INFO L93 Difference]: Finished difference Result 174 states and 346 transitions. [2020-04-18 19:40:52,106 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 346 transitions. [2020-04-18 19:40:52,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:40:52,106 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:40:52,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:52,107 INFO L82 PathProgramCache]: Analyzing trace with hash -710180247, now seen corresponding path program 3 times [2020-04-18 19:40:52,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:52,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518327077] [2020-04-18 19:40:52,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:52,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:52,266 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 19:40:52,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518327077] [2020-04-18 19:40:52,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:52,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:40:52,268 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:52,272 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:52,287 INFO L259 McrAutomatonBuilder]: Finished intersection with 108 states and 199 transitions. [2020-04-18 19:40:52,287 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:52,780 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 28 times. [2020-04-18 19:40:52,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 19:40:52,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2020-04-18 19:40:52,782 INFO L87 Difference]: Start difference. First operand 174 states and 346 transitions. Second operand 19 states. [2020-04-18 19:40:52,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:52,985 INFO L93 Difference]: Finished difference Result 174 states and 346 transitions. [2020-04-18 19:40:52,985 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 346 transitions. [2020-04-18 19:40:52,986 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:40:52,986 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2132115304] [2020-04-18 19:40:52,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:40:52,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:40:52,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2132115304] [2020-04-18 19:40:52,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-04-18 19:40:52,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:40:52,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 19:40:52,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=683, Unknown=0, NotChecked=0, Total=930 [2020-04-18 19:40:52,988 INFO L87 Difference]: Start difference. First operand 3379 states and 11125 transitions. Second operand 20 states. [2020-04-18 19:40:53,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:53,719 INFO L93 Difference]: Finished difference Result 7459 states and 23888 transitions. [2020-04-18 19:40:53,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-04-18 19:40:53,720 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 39 [2020-04-18 19:40:53,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:40:53,730 INFO L225 Difference]: With dead ends: 7459 [2020-04-18 19:40:53,731 INFO L226 Difference]: Without dead ends: 3179 [2020-04-18 19:40:53,732 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=536, Invalid=1356, Unknown=0, NotChecked=0, Total=1892 [2020-04-18 19:40:53,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2020-04-18 19:40:53,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 2491. [2020-04-18 19:40:53,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2491 states. [2020-04-18 19:40:53,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2491 states to 2491 states and 7908 transitions. [2020-04-18 19:40:53,811 INFO L78 Accepts]: Start accepts. Automaton has 2491 states and 7908 transitions. Word has length 39 [2020-04-18 19:40:53,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:40:53,811 INFO L479 AbstractCegarLoop]: Abstraction has 2491 states and 7908 transitions. [2020-04-18 19:40:53,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-04-18 19:40:53,811 INFO L276 IsEmpty]: Start isEmpty. Operand 2491 states and 7908 transitions. [2020-04-18 19:40:53,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:40:53,817 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:40:53,818 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] [2020-04-18 19:40:53,818 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:40:53,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:53,818 INFO L82 PathProgramCache]: Analyzing trace with hash 313649386, now seen corresponding path program 1 times [2020-04-18 19:40:53,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:40:53,819 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1474472936] [2020-04-18 19:40:53,820 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:53,828 INFO L259 McrAutomatonBuilder]: Finished intersection with 414 states and 1145 transitions. [2020-04-18 19:40:53,831 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states. [2020-04-18 19:40:53,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:40:53,833 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:40:53,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:53,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1326646168, now seen corresponding path program 2 times [2020-04-18 19:40:53,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:53,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610944731] [2020-04-18 19:40:53,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:53,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:53,917 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 19:40:53,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610944731] [2020-04-18 19:40:53,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:53,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:40:53,918 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:53,922 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:53,945 INFO L259 McrAutomatonBuilder]: Finished intersection with 163 states and 353 transitions. [2020-04-18 19:40:53,945 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:54,028 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:40:54,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:40:54,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:40:54,029 INFO L87 Difference]: Start difference. First operand 414 states. Second operand 6 states. [2020-04-18 19:40:54,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:54,130 INFO L93 Difference]: Finished difference Result 468 states and 1262 transitions. [2020-04-18 19:40:54,130 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1262 transitions. [2020-04-18 19:40:54,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:40:54,132 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:40:54,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:54,132 INFO L82 PathProgramCache]: Analyzing trace with hash 313649386, now seen corresponding path program 3 times [2020-04-18 19:40:54,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:54,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726894769] [2020-04-18 19:40:54,133 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:54,221 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 19:40:54,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726894769] [2020-04-18 19:40:54,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:54,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:40:54,222 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:54,226 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:54,254 INFO L259 McrAutomatonBuilder]: Finished intersection with 216 states and 517 transitions. [2020-04-18 19:40:54,254 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:54,328 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:40:54,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:40:54,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:40:54,329 INFO L87 Difference]: Start difference. First operand 468 states and 1262 transitions. Second operand 6 states. [2020-04-18 19:40:54,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:54,386 INFO L93 Difference]: Finished difference Result 468 states and 1262 transitions. [2020-04-18 19:40:54,386 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1262 transitions. [2020-04-18 19:40:54,388 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:40:54,388 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1474472936] [2020-04-18 19:40:54,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:40:54,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:40:54,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1474472936] [2020-04-18 19:40:54,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 19:40:54,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:40:54,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:40:54,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2020-04-18 19:40:54,391 INFO L87 Difference]: Start difference. First operand 2491 states and 7908 transitions. Second operand 10 states. [2020-04-18 19:40:54,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:54,668 INFO L93 Difference]: Finished difference Result 3262 states and 10220 transitions. [2020-04-18 19:40:54,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 19:40:54,669 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-04-18 19:40:54,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:40:54,677 INFO L225 Difference]: With dead ends: 3262 [2020-04-18 19:40:54,677 INFO L226 Difference]: Without dead ends: 2302 [2020-04-18 19:40:54,678 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2020-04-18 19:40:54,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2020-04-18 19:40:54,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 2302. [2020-04-18 19:40:54,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2302 states. [2020-04-18 19:40:54,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 7207 transitions. [2020-04-18 19:40:54,738 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 7207 transitions. Word has length 41 [2020-04-18 19:40:54,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:40:54,738 INFO L479 AbstractCegarLoop]: Abstraction has 2302 states and 7207 transitions. [2020-04-18 19:40:54,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 19:40:54,738 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 7207 transitions. [2020-04-18 19:40:54,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:40:54,745 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:40:54,745 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 19:40:54,745 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:40:54,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:54,746 INFO L82 PathProgramCache]: Analyzing trace with hash -198753646, now seen corresponding path program 1 times [2020-04-18 19:40:54,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:40:54,746 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1003993605] [2020-04-18 19:40:54,748 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:54,758 INFO L259 McrAutomatonBuilder]: Finished intersection with 543 states and 1558 transitions. [2020-04-18 19:40:54,762 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states. [2020-04-18 19:40:54,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:40:54,765 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:40:54,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:54,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1839049200, now seen corresponding path program 2 times [2020-04-18 19:40:54,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:54,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125521297] [2020-04-18 19:40:54,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:54,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:54,856 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 19:40:54,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125521297] [2020-04-18 19:40:54,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:54,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:40:54,858 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:54,862 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:54,886 INFO L259 McrAutomatonBuilder]: Finished intersection with 143 states and 285 transitions. [2020-04-18 19:40:54,887 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:54,930 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 19:40:54,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:40:54,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:40:54,931 INFO L87 Difference]: Start difference. First operand 543 states. Second operand 7 states. [2020-04-18 19:40:55,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:55,041 INFO L93 Difference]: Finished difference Result 615 states and 1720 transitions. [2020-04-18 19:40:55,042 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 1720 transitions. [2020-04-18 19:40:55,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:40:55,043 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:40:55,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:55,044 INFO L82 PathProgramCache]: Analyzing trace with hash -198753646, now seen corresponding path program 3 times [2020-04-18 19:40:55,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:55,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246086795] [2020-04-18 19:40:55,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:55,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:55,151 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 19:40:55,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246086795] [2020-04-18 19:40:55,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:55,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:40:55,153 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:55,158 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:55,214 INFO L259 McrAutomatonBuilder]: Finished intersection with 186 states and 410 transitions. [2020-04-18 19:40:55,214 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:55,276 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 19:40:55,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:40:55,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-04-18 19:40:55,277 INFO L87 Difference]: Start difference. First operand 615 states and 1720 transitions. Second operand 7 states. [2020-04-18 19:40:55,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:55,400 INFO L93 Difference]: Finished difference Result 615 states and 1720 transitions. [2020-04-18 19:40:55,400 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 1720 transitions. [2020-04-18 19:40:55,402 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:40:55,403 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1003993605] [2020-04-18 19:40:55,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:40:55,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:40:55,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1003993605] [2020-04-18 19:40:55,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 19:40:55,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:40:55,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 19:40:55,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2020-04-18 19:40:55,405 INFO L87 Difference]: Start difference. First operand 2302 states and 7207 transitions. Second operand 12 states. [2020-04-18 19:40:55,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:55,916 INFO L93 Difference]: Finished difference Result 2752 states and 8368 transitions. [2020-04-18 19:40:55,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-18 19:40:55,917 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2020-04-18 19:40:55,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:40:55,923 INFO L225 Difference]: With dead ends: 2752 [2020-04-18 19:40:55,923 INFO L226 Difference]: Without dead ends: 1924 [2020-04-18 19:40:55,924 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=250, Invalid=1082, Unknown=0, NotChecked=0, Total=1332 [2020-04-18 19:40:55,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2020-04-18 19:40:55,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 1708. [2020-04-18 19:40:55,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1708 states. [2020-04-18 19:40:55,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1708 states to 1708 states and 5119 transitions. [2020-04-18 19:40:55,970 INFO L78 Accepts]: Start accepts. Automaton has 1708 states and 5119 transitions. Word has length 42 [2020-04-18 19:40:55,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:40:55,970 INFO L479 AbstractCegarLoop]: Abstraction has 1708 states and 5119 transitions. [2020-04-18 19:40:55,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 19:40:55,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1708 states and 5119 transitions. [2020-04-18 19:40:55,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:40:55,974 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:40:55,975 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] [2020-04-18 19:40:55,975 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:40:55,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:55,975 INFO L82 PathProgramCache]: Analyzing trace with hash 130248879, now seen corresponding path program 1 times [2020-04-18 19:40:55,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:40:55,976 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [702553612] [2020-04-18 19:40:55,977 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:55,993 INFO L259 McrAutomatonBuilder]: Finished intersection with 855 states and 2600 transitions. [2020-04-18 19:40:55,999 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states. [2020-04-18 19:40:56,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:40:56,002 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:40:56,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:56,003 INFO L82 PathProgramCache]: Analyzing trace with hash -661644175, now seen corresponding path program 2 times [2020-04-18 19:40:56,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:56,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305152262] [2020-04-18 19:40:56,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:56,108 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 19:40:56,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305152262] [2020-04-18 19:40:56,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:56,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:40:56,109 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:56,112 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:56,146 INFO L259 McrAutomatonBuilder]: Finished intersection with 258 states and 577 transitions. [2020-04-18 19:40:56,146 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:56,176 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:40:56,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:40:56,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:40:56,176 INFO L87 Difference]: Start difference. First operand 855 states. Second operand 6 states. [2020-04-18 19:40:56,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:56,329 INFO L93 Difference]: Finished difference Result 1255 states and 3652 transitions. [2020-04-18 19:40:56,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 3652 transitions. [2020-04-18 19:40:56,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:40:56,333 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:40:56,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:56,333 INFO L82 PathProgramCache]: Analyzing trace with hash 978651379, now seen corresponding path program 3 times [2020-04-18 19:40:56,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:56,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775698456] [2020-04-18 19:40:56,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:56,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:56,429 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 19:40:56,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775698456] [2020-04-18 19:40:56,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:56,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:40:56,430 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:56,434 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:56,465 INFO L259 McrAutomatonBuilder]: Finished intersection with 240 states and 534 transitions. [2020-04-18 19:40:56,465 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:56,530 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 19:40:56,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:40:56,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-04-18 19:40:56,531 INFO L87 Difference]: Start difference. First operand 1255 states and 3652 transitions. Second operand 7 states. [2020-04-18 19:40:56,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:56,826 INFO L93 Difference]: Finished difference Result 1255 states and 3652 transitions. [2020-04-18 19:40:56,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 3652 transitions. [2020-04-18 19:40:56,829 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:40:56,829 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [702553612] [2020-04-18 19:40:56,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:40:56,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:40:56,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [702553612] [2020-04-18 19:40:56,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 19:40:56,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:40:56,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:40:56,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2020-04-18 19:40:56,831 INFO L87 Difference]: Start difference. First operand 1708 states and 5119 transitions. Second operand 11 states. [2020-04-18 19:40:57,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:57,197 INFO L93 Difference]: Finished difference Result 1591 states and 4603 transitions. [2020-04-18 19:40:57,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 19:40:57,197 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2020-04-18 19:40:57,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:40:57,202 INFO L225 Difference]: With dead ends: 1591 [2020-04-18 19:40:57,202 INFO L226 Difference]: Without dead ends: 784 [2020-04-18 19:40:57,203 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=164, Invalid=766, Unknown=0, NotChecked=0, Total=930 [2020-04-18 19:40:57,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2020-04-18 19:40:57,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 743. [2020-04-18 19:40:57,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-04-18 19:40:57,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 2107 transitions. [2020-04-18 19:40:57,222 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 2107 transitions. Word has length 44 [2020-04-18 19:40:57,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:40:57,222 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 2107 transitions. [2020-04-18 19:40:57,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 19:40:57,223 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 2107 transitions. [2020-04-18 19:40:57,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:40:57,225 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:40:57,225 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] [2020-04-18 19:40:57,225 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:40:57,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:57,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1205239730, now seen corresponding path program 1 times [2020-04-18 19:40:57,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:40:57,226 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1024245437] [2020-04-18 19:40:57,227 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:57,259 INFO L259 McrAutomatonBuilder]: Finished intersection with 1415 states and 4510 transitions. [2020-04-18 19:40:57,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states. [2020-04-18 19:40:57,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:40:57,274 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:40:57,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:57,274 INFO L82 PathProgramCache]: Analyzing trace with hash -184887758, now seen corresponding path program 2 times [2020-04-18 19:40:57,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:57,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809800829] [2020-04-18 19:40:57,275 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:57,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:57,363 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 19:40:57,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809800829] [2020-04-18 19:40:57,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:57,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:40:57,364 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:57,368 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:57,410 INFO L259 McrAutomatonBuilder]: Finished intersection with 276 states and 616 transitions. [2020-04-18 19:40:57,410 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:57,463 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:40:57,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:40:57,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:40:57,464 INFO L87 Difference]: Start difference. First operand 1415 states. Second operand 6 states. [2020-04-18 19:40:57,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:57,628 INFO L93 Difference]: Finished difference Result 2327 states and 7242 transitions. [2020-04-18 19:40:57,628 INFO L276 IsEmpty]: Start isEmpty. Operand 2327 states and 7242 transitions. [2020-04-18 19:40:57,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:40:57,634 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:40:57,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:57,634 INFO L82 PathProgramCache]: Analyzing trace with hash 58842548, now seen corresponding path program 3 times [2020-04-18 19:40:57,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:57,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35258132] [2020-04-18 19:40:57,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:57,745 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 19:40:57,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35258132] [2020-04-18 19:40:57,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:57,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:40:57,746 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:57,755 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:57,807 INFO L259 McrAutomatonBuilder]: Finished intersection with 300 states and 679 transitions. [2020-04-18 19:40:57,807 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:57,993 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 43 times. [2020-04-18 19:40:57,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 19:40:57,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2020-04-18 19:40:57,994 INFO L87 Difference]: Start difference. First operand 2327 states and 7242 transitions. Second operand 14 states. [2020-04-18 19:40:58,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:58,301 INFO L93 Difference]: Finished difference Result 3075 states and 9170 transitions. [2020-04-18 19:40:58,301 INFO L276 IsEmpty]: Start isEmpty. Operand 3075 states and 9170 transitions. [2020-04-18 19:40:58,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:40:58,306 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:40:58,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:58,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1799782802, now seen corresponding path program 4 times [2020-04-18 19:40:58,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:58,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728013379] [2020-04-18 19:40:58,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:58,399 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 19:40:58,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728013379] [2020-04-18 19:40:58,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:58,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:40:58,400 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:58,404 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:58,448 INFO L259 McrAutomatonBuilder]: Finished intersection with 264 states and 590 transitions. [2020-04-18 19:40:58,448 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:58,581 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 19:40:58,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:40:58,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=748, Unknown=0, NotChecked=0, Total=930 [2020-04-18 19:40:58,582 INFO L87 Difference]: Start difference. First operand 3075 states and 9170 transitions. Second operand 7 states. [2020-04-18 19:40:58,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:58,971 INFO L93 Difference]: Finished difference Result 3139 states and 9230 transitions. [2020-04-18 19:40:58,971 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 9230 transitions. [2020-04-18 19:40:58,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:40:58,976 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:40:58,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:58,977 INFO L82 PathProgramCache]: Analyzing trace with hash -955476042, now seen corresponding path program 5 times [2020-04-18 19:40:58,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:58,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639735115] [2020-04-18 19:40:58,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:59,091 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 19:40:59,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639735115] [2020-04-18 19:40:59,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:59,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:40:59,093 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:59,097 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:59,182 INFO L259 McrAutomatonBuilder]: Finished intersection with 444 states and 1121 transitions. [2020-04-18 19:40:59,182 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:59,406 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 43 times. [2020-04-18 19:40:59,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:40:59,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=1645, Unknown=0, NotChecked=0, Total=1980 [2020-04-18 19:40:59,408 INFO L87 Difference]: Start difference. First operand 3139 states and 9230 transitions. Second operand 11 states. [2020-04-18 19:41:00,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:41:00,390 INFO L93 Difference]: Finished difference Result 4827 states and 13766 transitions. [2020-04-18 19:41:00,391 INFO L276 IsEmpty]: Start isEmpty. Operand 4827 states and 13766 transitions. [2020-04-18 19:41:00,398 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:41:00,399 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1024245437] [2020-04-18 19:41:00,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:41:00,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:41:00,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1024245437] [2020-04-18 19:41:00,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 19:41:00,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:41:00,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 19:41:00,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=616, Invalid=3290, Unknown=0, NotChecked=0, Total=3906 [2020-04-18 19:41:00,401 INFO L87 Difference]: Start difference. First operand 743 states and 2107 transitions. Second operand 25 states. [2020-04-18 19:41:01,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:41:01,051 INFO L93 Difference]: Finished difference Result 730 states and 2071 transitions. [2020-04-18 19:41:01,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-04-18 19:41:01,051 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 46 [2020-04-18 19:41:01,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:41:01,055 INFO L225 Difference]: With dead ends: 730 [2020-04-18 19:41:01,055 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:41:01,058 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1766 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=887, Invalid=4965, Unknown=0, NotChecked=0, Total=5852 [2020-04-18 19:41:01,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:41:01,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:41:01,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:41:01,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:41:01,059 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2020-04-18 19:41:01,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:41:01,059 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:41:01,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 19:41:01,059 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:41:01,059 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:41:01,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:41:01 BasicIcfg [2020-04-18 19:41:01,068 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:41:01,077 INFO L168 Benchmark]: Toolchain (without parser) took 15492.66 ms. Allocated memory was 137.4 MB in the beginning and 569.9 MB in the end (delta: 432.5 MB). Free memory was 99.3 MB in the beginning and 63.8 MB in the end (delta: 35.5 MB). Peak memory consumption was 468.1 MB. Max. memory is 7.1 GB. [2020-04-18 19:41:01,080 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 137.4 MB. Free memory was 119.3 MB in the beginning and 119.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-18 19:41:01,083 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.95 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 97.5 MB in the beginning and 155.7 MB in the end (delta: -58.3 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-04-18 19:41:01,085 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.45 ms. Allocated memory is still 200.3 MB. Free memory was 155.7 MB in the beginning and 153.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 19:41:01,086 INFO L168 Benchmark]: Boogie Preprocessor took 42.06 ms. Allocated memory is still 200.3 MB. Free memory was 153.7 MB in the beginning and 152.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 19:41:01,086 INFO L168 Benchmark]: RCFGBuilder took 493.43 ms. Allocated memory is still 200.3 MB. Free memory was 152.3 MB in the beginning and 130.0 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-04-18 19:41:01,087 INFO L168 Benchmark]: TraceAbstraction took 14176.91 ms. Allocated memory was 200.3 MB in the beginning and 569.9 MB in the end (delta: 369.6 MB). Free memory was 130.0 MB in the beginning and 63.8 MB in the end (delta: 66.2 MB). Peak memory consumption was 435.8 MB. Max. memory is 7.1 GB. [2020-04-18 19:41:01,098 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 137.4 MB. Free memory was 119.3 MB in the beginning and 119.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 673.95 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 97.5 MB in the beginning and 155.7 MB in the end (delta: -58.3 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 80.45 ms. Allocated memory is still 200.3 MB. Free memory was 155.7 MB in the beginning and 153.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.06 ms. Allocated memory is still 200.3 MB. Free memory was 153.7 MB in the beginning and 152.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 493.43 ms. Allocated memory is still 200.3 MB. Free memory was 152.3 MB in the beginning and 130.0 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14176.91 ms. Allocated memory was 200.3 MB in the beginning and 569.9 MB in the end (delta: 369.6 MB). Free memory was 130.0 MB in the beginning and 63.8 MB in the end (delta: 66.2 MB). Peak memory consumption was 435.8 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, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 844 SDtfs, 2147 SDslu, 4695 SDs, 0 SdLazy, 1015 SolverSat, 172 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1142 GetRequests, 885 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2931 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7267occurred 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: 0.8s AutomataMinimizationTime, 9 MinimizatonAttempts, 4061 StatesRemovedByMinimization, 7 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...