/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 10:46:29,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 10:46:29,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 10:46:29,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 10:46:29,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 10:46:29,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 10:46:29,157 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 10:46:29,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 10:46:29,160 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 10:46:29,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 10:46:29,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 10:46:29,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 10:46:29,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 10:46:29,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 10:46:29,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 10:46:29,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 10:46:29,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 10:46:29,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 10:46:29,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 10:46:29,175 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 10:46:29,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 10:46:29,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 10:46:29,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 10:46:29,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 10:46:29,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 10:46:29,189 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 10:46:29,189 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 10:46:29,190 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 10:46:29,190 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 10:46:29,191 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 10:46:29,191 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 10:46:29,193 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 10:46:29,194 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 10:46:29,194 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 10:46:29,195 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 10:46:29,196 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 10:46:29,196 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 10:46:29,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 10:46:29,197 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 10:46:29,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 10:46:29,201 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 10:46:29,201 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf [2020-04-18 10:46:29,225 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 10:46:29,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 10:46:29,227 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 10:46:29,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 10:46:29,228 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 10:46:29,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 10:46:29,228 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 10:46:29,228 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 10:46:29,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 10:46:29,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 10:46:29,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 10:46:29,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 10:46:29,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 10:46:29,231 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 10:46:29,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 10:46:29,231 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 10:46:29,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 10:46:29,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 10:46:29,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 10:46:29,232 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 10:46:29,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 10:46:29,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 10:46:29,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 10:46:29,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 10:46:29,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 10:46:29,233 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 10:46:29,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 10:46:29,234 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 10:46:29,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 10:46:29,234 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 10:46:29,490 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 10:46:29,507 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 10:46:29,510 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 10:46:29,512 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 10:46:29,512 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 10:46:29,513 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i [2020-04-18 10:46:29,581 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/329eb9bba/9599d267b0cb4e1e8330454e5db23b5b/FLAG99002c7bf [2020-04-18 10:46:30,121 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 10:46:30,122 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i [2020-04-18 10:46:30,144 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/329eb9bba/9599d267b0cb4e1e8330454e5db23b5b/FLAG99002c7bf [2020-04-18 10:46:30,435 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/329eb9bba/9599d267b0cb4e1e8330454e5db23b5b [2020-04-18 10:46:30,442 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 10:46:30,465 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 10:46:30,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 10:46:30,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 10:46:30,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 10:46:30,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:46:30" (1/1) ... [2020-04-18 10:46:30,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26bba74a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:46:30, skipping insertion in model container [2020-04-18 10:46:30,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:46:30" (1/1) ... [2020-04-18 10:46:30,480 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 10:46:30,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 10:46:31,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:46:31,026 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 10:46:31,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:46:31,145 INFO L208 MainTranslator]: Completed translation [2020-04-18 10:46:31,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:46:31 WrapperNode [2020-04-18 10:46:31,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 10:46:31,147 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 10:46:31,147 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 10:46:31,147 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 10:46:31,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:46:31" (1/1) ... [2020-04-18 10:46:31,172 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:46:31" (1/1) ... [2020-04-18 10:46:31,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 10:46:31,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 10:46:31,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 10:46:31,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 10:46:31,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:46:31" (1/1) ... [2020-04-18 10:46:31,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:46:31" (1/1) ... [2020-04-18 10:46:31,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:46:31" (1/1) ... [2020-04-18 10:46:31,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:46:31" (1/1) ... [2020-04-18 10:46:31,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:46:31" (1/1) ... [2020-04-18 10:46:31,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:46:31" (1/1) ... [2020-04-18 10:46:31,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:46:31" (1/1) ... [2020-04-18 10:46:31,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 10:46:31,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 10:46:31,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 10:46:31,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 10:46:31,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:46:31" (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 10:46:31,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 10:46:31,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 10:46:31,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 10:46:31,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 10:46:31,283 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 10:46:31,283 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 10:46:31,283 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 10:46:31,283 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 10:46:31,284 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 10:46:31,284 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 10:46:31,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 10:46:31,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 10:46:31,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 10:46:31,285 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 10:46:31,694 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 10:46:31,694 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 10:46:31,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:46:31 BoogieIcfgContainer [2020-04-18 10:46:31,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 10:46:31,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 10:46:31,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 10:46:31,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 10:46:31,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 10:46:30" (1/3) ... [2020-04-18 10:46:31,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@755a9eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:46:31, skipping insertion in model container [2020-04-18 10:46:31,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:46:31" (2/3) ... [2020-04-18 10:46:31,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@755a9eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:46:31, skipping insertion in model container [2020-04-18 10:46:31,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:46:31" (3/3) ... [2020-04-18 10:46:31,707 INFO L109 eAbstractionObserver]: Analyzing ICFG safe008_tso.opt.i [2020-04-18 10:46:31,715 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 10:46:31,716 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 10:46:31,723 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 10:46:31,724 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 10:46:31,751 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:31,751 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:31,752 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:31,752 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:31,752 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:31,753 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:31,753 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:31,753 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:31,753 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:31,754 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:31,754 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:31,754 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:31,755 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:31,755 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:31,755 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:31,756 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:31,756 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:31,756 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:31,760 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:31,761 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:31,761 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:31,761 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:31,767 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:31,767 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:31,767 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:31,767 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:31,769 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:31,769 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:31,769 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:31,770 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:31,788 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 10:46:31,811 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 10:46:31,811 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 10:46:31,811 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 10:46:31,812 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 10:46:31,812 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 10:46:31,813 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 10:46:31,813 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 10:46:31,813 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 10:46:31,839 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 10:46:31,841 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 10:46:31,916 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 10:46:31,917 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:46:31,922 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 10:46:31,925 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 10:46:31,944 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 10:46:31,944 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:46:31,945 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 10:46:31,947 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 10:46:31,948 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 10:46:33,513 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2250 [2020-04-18 10:46:33,514 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2020-04-18 10:46:33,517 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-18 10:46:33,546 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-18 10:46:33,548 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-18 10:46:33,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:46:33,557 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:46:33,558 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:46:33,558 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:46:33,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:33,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1626400852, now seen corresponding path program 1 times [2020-04-18 10:46:33,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:46:33,572 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1727706435] [2020-04-18 10:46:33,588 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:33,602 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:46:33,603 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 10:46:33,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:46:33,604 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:46:33,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:33,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1626400852, now seen corresponding path program 2 times [2020-04-18 10:46:33,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:33,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416714313] [2020-04-18 10:46:33,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:33,826 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 10:46:33,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416714313] [2020-04-18 10:46:33,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:33,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:46:33,830 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:33,830 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:33,833 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:46:33,833 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:33,837 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:46:33,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 10:46:33,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 10:46:33,843 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 2 states. [2020-04-18 10:46:33,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:33,847 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 10:46:33,848 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 10:46:33,848 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:46:33,849 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1727706435] [2020-04-18 10:46:33,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:46:33,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:46:33,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1727706435] [2020-04-18 10:46:33,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 10:46:33,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:46:33,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 10:46:33,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 10:46:33,857 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-18 10:46:33,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:33,878 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-18 10:46:33,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 10:46:33,879 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-18 10:46:33,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:46:33,908 INFO L225 Difference]: With dead ends: 362 [2020-04-18 10:46:33,908 INFO L226 Difference]: Without dead ends: 298 [2020-04-18 10:46:33,916 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 10:46:33,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-18 10:46:33,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-18 10:46:33,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-18 10:46:33,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-18 10:46:33,995 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-18 10:46:33,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:46:33,997 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-18 10:46:33,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 10:46:33,997 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-18 10:46:33,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:46:33,999 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:46:34,000 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:46:34,000 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:46:34,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:34,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1121187596, now seen corresponding path program 1 times [2020-04-18 10:46:34,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:46:34,001 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [485923850] [2020-04-18 10:46:34,002 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:34,002 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 10:46:34,002 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 10:46:34,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:46:34,003 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:46:34,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:34,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1121187596, now seen corresponding path program 2 times [2020-04-18 10:46:34,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:34,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182805051] [2020-04-18 10:46:34,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:34,135 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 10:46:34,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182805051] [2020-04-18 10:46:34,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:34,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:46:34,137 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:34,138 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:34,139 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 10:46:34,139 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:34,156 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:46:34,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:46:34,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:46:34,157 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2020-04-18 10:46:34,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:34,172 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-04-18 10:46:34,172 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-04-18 10:46:34,173 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:46:34,173 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [485923850] [2020-04-18 10:46:34,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:46:34,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:46:34,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [485923850] [2020-04-18 10:46:34,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 10:46:34,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:46:34,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:46:34,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:46:34,179 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-04-18 10:46:34,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:34,206 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-04-18 10:46:34,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 10:46:34,206 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 10:46:34,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:46:34,210 INFO L225 Difference]: With dead ends: 330 [2020-04-18 10:46:34,210 INFO L226 Difference]: Without dead ends: 266 [2020-04-18 10:46:34,214 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:46:34,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-04-18 10:46:34,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-04-18 10:46:34,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-04-18 10:46:34,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-04-18 10:46:34,251 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-04-18 10:46:34,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:46:34,252 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-04-18 10:46:34,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 10:46:34,252 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-04-18 10:46:34,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:46:34,256 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:46:34,256 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:46:34,256 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:46:34,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:34,257 INFO L82 PathProgramCache]: Analyzing trace with hash -485254353, now seen corresponding path program 1 times [2020-04-18 10:46:34,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:46:34,258 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1362157662] [2020-04-18 10:46:34,258 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:34,259 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 20 transitions. [2020-04-18 10:46:34,259 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 10:46:34,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:46:34,260 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:46:34,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:34,261 INFO L82 PathProgramCache]: Analyzing trace with hash -485254353, now seen corresponding path program 2 times [2020-04-18 10:46:34,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:34,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391071380] [2020-04-18 10:46:34,261 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:34,384 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 10:46:34,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391071380] [2020-04-18 10:46:34,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:34,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:46:34,386 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:34,389 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:34,391 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-04-18 10:46:34,392 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:34,403 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:46:34,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:46:34,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:46:34,404 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-04-18 10:46:34,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:34,417 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2020-04-18 10:46:34,417 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2020-04-18 10:46:34,417 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:46:34,418 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1362157662] [2020-04-18 10:46:34,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:46:34,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:46:34,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1362157662] [2020-04-18 10:46:34,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 10:46:34,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:46:34,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:46:34,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:46:34,419 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 4 states. [2020-04-18 10:46:34,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:34,437 INFO L93 Difference]: Finished difference Result 302 states and 818 transitions. [2020-04-18 10:46:34,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 10:46:34,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 10:46:34,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:46:34,441 INFO L225 Difference]: With dead ends: 302 [2020-04-18 10:46:34,441 INFO L226 Difference]: Without dead ends: 254 [2020-04-18 10:46:34,442 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:46:34,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-04-18 10:46:34,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2020-04-18 10:46:34,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-04-18 10:46:34,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 708 transitions. [2020-04-18 10:46:34,457 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 708 transitions. Word has length 10 [2020-04-18 10:46:34,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:46:34,458 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 708 transitions. [2020-04-18 10:46:34,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 10:46:34,458 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 708 transitions. [2020-04-18 10:46:34,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:46:34,461 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:46:34,461 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:46:34,461 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:46:34,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:34,462 INFO L82 PathProgramCache]: Analyzing trace with hash 2136948955, now seen corresponding path program 1 times [2020-04-18 10:46:34,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:46:34,465 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2048400843] [2020-04-18 10:46:34,466 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:34,466 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 52 transitions. [2020-04-18 10:46:34,467 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-04-18 10:46:34,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:46:34,467 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:46:34,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:34,468 INFO L82 PathProgramCache]: Analyzing trace with hash 2136984415, now seen corresponding path program 2 times [2020-04-18 10:46:34,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:34,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517913571] [2020-04-18 10:46:34,468 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:34,558 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 10:46:34,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517913571] [2020-04-18 10:46:34,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:34,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:46:34,559 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:34,563 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:34,565 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 19 transitions. [2020-04-18 10:46:34,565 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:34,577 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:46:34,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:46:34,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:46:34,578 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 4 states. [2020-04-18 10:46:34,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:34,594 INFO L93 Difference]: Finished difference Result 34 states and 56 transitions. [2020-04-18 10:46:34,595 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 56 transitions. [2020-04-18 10:46:34,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:46:34,595 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:46:34,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:34,596 INFO L82 PathProgramCache]: Analyzing trace with hash 2136948955, now seen corresponding path program 3 times [2020-04-18 10:46:34,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:34,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717799800] [2020-04-18 10:46:34,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:34,661 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 10:46:34,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717799800] [2020-04-18 10:46:34,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:34,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:46:34,662 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:34,663 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:34,665 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 38 transitions. [2020-04-18 10:46:34,665 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:34,673 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:46:34,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:46:34,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:46:34,674 INFO L87 Difference]: Start difference. First operand 34 states and 56 transitions. Second operand 4 states. [2020-04-18 10:46:34,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:34,685 INFO L93 Difference]: Finished difference Result 34 states and 56 transitions. [2020-04-18 10:46:34,685 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 56 transitions. [2020-04-18 10:46:34,685 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:46:34,686 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2048400843] [2020-04-18 10:46:34,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:46:34,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:46:34,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2048400843] [2020-04-18 10:46:34,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 10:46:34,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:46:34,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:46:34,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:46:34,687 INFO L87 Difference]: Start difference. First operand 254 states and 708 transitions. Second operand 5 states. [2020-04-18 10:46:34,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:34,714 INFO L93 Difference]: Finished difference Result 272 states and 732 transitions. [2020-04-18 10:46:34,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 10:46:34,714 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-04-18 10:46:34,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:46:34,716 INFO L225 Difference]: With dead ends: 272 [2020-04-18 10:46:34,716 INFO L226 Difference]: Without dead ends: 236 [2020-04-18 10:46:34,717 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:46:34,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-04-18 10:46:34,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2020-04-18 10:46:34,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-04-18 10:46:34,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 648 transitions. [2020-04-18 10:46:34,726 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 648 transitions. Word has length 11 [2020-04-18 10:46:34,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:46:34,726 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 648 transitions. [2020-04-18 10:46:34,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 10:46:34,727 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 648 transitions. [2020-04-18 10:46:34,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:46:34,728 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:46:34,728 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:46:34,728 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:46:34,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:34,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1801101265, now seen corresponding path program 1 times [2020-04-18 10:46:34,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:46:34,729 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2060740677] [2020-04-18 10:46:34,729 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:34,730 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 56 transitions. [2020-04-18 10:46:34,731 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-04-18 10:46:34,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:46:34,731 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:46:34,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:34,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1801101265, now seen corresponding path program 2 times [2020-04-18 10:46:34,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:34,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985347204] [2020-04-18 10:46:34,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:34,787 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 10:46:34,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985347204] [2020-04-18 10:46:34,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:34,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:46:34,789 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:34,790 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:34,792 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 32 transitions. [2020-04-18 10:46:34,792 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:34,805 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:46:34,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:46:34,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:46:34,805 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 4 states. [2020-04-18 10:46:34,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:34,839 INFO L93 Difference]: Finished difference Result 36 states and 60 transitions. [2020-04-18 10:46:34,839 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 60 transitions. [2020-04-18 10:46:34,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:46:34,840 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:46:34,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:34,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1802734345, now seen corresponding path program 3 times [2020-04-18 10:46:34,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:34,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017331276] [2020-04-18 10:46:34,841 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:34,895 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 10:46:34,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017331276] [2020-04-18 10:46:34,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:34,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:46:34,896 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:34,897 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:34,899 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 27 transitions. [2020-04-18 10:46:34,899 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:34,941 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 10:46:34,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:46:34,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-04-18 10:46:34,942 INFO L87 Difference]: Start difference. First operand 36 states and 60 transitions. Second operand 7 states. [2020-04-18 10:46:34,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:34,981 INFO L93 Difference]: Finished difference Result 36 states and 60 transitions. [2020-04-18 10:46:34,981 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 60 transitions. [2020-04-18 10:46:34,981 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:46:34,982 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2060740677] [2020-04-18 10:46:34,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:46:34,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 10:46:34,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2060740677] [2020-04-18 10:46:34,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 10:46:34,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:46:34,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 10:46:34,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-04-18 10:46:34,983 INFO L87 Difference]: Start difference. First operand 236 states and 648 transitions. Second operand 8 states. [2020-04-18 10:46:35,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:35,280 INFO L93 Difference]: Finished difference Result 429 states and 1101 transitions. [2020-04-18 10:46:35,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-04-18 10:46:35,280 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-04-18 10:46:35,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:46:35,282 INFO L225 Difference]: With dead ends: 429 [2020-04-18 10:46:35,282 INFO L226 Difference]: Without dead ends: 182 [2020-04-18 10:46:35,283 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-04-18 10:46:35,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-04-18 10:46:35,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 158. [2020-04-18 10:46:35,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-04-18 10:46:35,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 382 transitions. [2020-04-18 10:46:35,288 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 382 transitions. Word has length 12 [2020-04-18 10:46:35,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:46:35,289 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 382 transitions. [2020-04-18 10:46:35,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 10:46:35,289 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 382 transitions. [2020-04-18 10:46:35,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:46:35,290 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:46:35,290 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:46:35,290 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:46:35,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:35,291 INFO L82 PathProgramCache]: Analyzing trace with hash 594574515, now seen corresponding path program 1 times [2020-04-18 10:46:35,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:46:35,291 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [976258709] [2020-04-18 10:46:35,292 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:35,293 INFO L259 McrAutomatonBuilder]: Finished intersection with 66 states and 150 transitions. [2020-04-18 10:46:35,294 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-04-18 10:46:35,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:46:35,294 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:46:35,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:35,295 INFO L82 PathProgramCache]: Analyzing trace with hash 50235405, now seen corresponding path program 2 times [2020-04-18 10:46:35,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:35,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795958119] [2020-04-18 10:46:35,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:35,346 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 10:46:35,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795958119] [2020-04-18 10:46:35,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:35,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 10:46:35,347 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:35,348 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:35,351 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 39 transitions. [2020-04-18 10:46:35,352 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:35,384 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 10:46:35,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:46:35,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:46:35,385 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 7 states. [2020-04-18 10:46:35,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:35,459 INFO L93 Difference]: Finished difference Result 76 states and 163 transitions. [2020-04-18 10:46:35,459 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 163 transitions. [2020-04-18 10:46:35,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:46:35,460 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:46:35,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:35,460 INFO L82 PathProgramCache]: Analyzing trace with hash 594609975, now seen corresponding path program 3 times [2020-04-18 10:46:35,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:35,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140710586] [2020-04-18 10:46:35,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:35,495 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 10:46:35,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140710586] [2020-04-18 10:46:35,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:35,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:46:35,496 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:35,497 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:35,500 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-04-18 10:46:35,500 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:35,510 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:46:35,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:46:35,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-04-18 10:46:35,511 INFO L87 Difference]: Start difference. First operand 76 states and 163 transitions. Second operand 4 states. [2020-04-18 10:46:35,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:35,528 INFO L93 Difference]: Finished difference Result 91 states and 185 transitions. [2020-04-18 10:46:35,528 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 185 transitions. [2020-04-18 10:46:35,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:46:35,529 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:46:35,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:35,529 INFO L82 PathProgramCache]: Analyzing trace with hash 594574515, now seen corresponding path program 4 times [2020-04-18 10:46:35,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:35,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927075240] [2020-04-18 10:46:35,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:35,569 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 10:46:35,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927075240] [2020-04-18 10:46:35,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:35,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:46:35,570 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:35,571 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:35,575 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 64 transitions. [2020-04-18 10:46:35,575 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:35,596 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:46:35,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:46:35,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-04-18 10:46:35,597 INFO L87 Difference]: Start difference. First operand 91 states and 185 transitions. Second operand 5 states. [2020-04-18 10:46:35,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:35,622 INFO L93 Difference]: Finished difference Result 91 states and 185 transitions. [2020-04-18 10:46:35,623 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 185 transitions. [2020-04-18 10:46:35,623 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:46:35,623 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [976258709] [2020-04-18 10:46:35,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:46:35,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 10:46:35,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [976258709] [2020-04-18 10:46:35,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 10:46:35,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:46:35,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 10:46:35,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-04-18 10:46:35,625 INFO L87 Difference]: Start difference. First operand 158 states and 382 transitions. Second operand 10 states. [2020-04-18 10:46:35,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:35,894 INFO L93 Difference]: Finished difference Result 196 states and 453 transitions. [2020-04-18 10:46:35,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-04-18 10:46:35,896 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-04-18 10:46:35,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:46:35,897 INFO L225 Difference]: With dead ends: 196 [2020-04-18 10:46:35,897 INFO L226 Difference]: Without dead ends: 82 [2020-04-18 10:46:35,898 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=633, Unknown=0, NotChecked=0, Total=812 [2020-04-18 10:46:35,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-04-18 10:46:35,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-04-18 10:46:35,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-04-18 10:46:35,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 170 transitions. [2020-04-18 10:46:35,902 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 170 transitions. Word has length 13 [2020-04-18 10:46:35,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:46:35,902 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 170 transitions. [2020-04-18 10:46:35,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 10:46:35,902 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 170 transitions. [2020-04-18 10:46:35,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:46:35,903 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:46:35,903 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:46:35,903 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:46:35,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:35,904 INFO L82 PathProgramCache]: Analyzing trace with hash -484565939, now seen corresponding path program 1 times [2020-04-18 10:46:35,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:46:35,904 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1582638348] [2020-04-18 10:46:35,905 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:35,908 INFO L259 McrAutomatonBuilder]: Finished intersection with 98 states and 240 transitions. [2020-04-18 10:46:35,909 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2020-04-18 10:46:35,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:46:35,909 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:46:35,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:35,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1557297703, now seen corresponding path program 2 times [2020-04-18 10:46:35,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:35,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357664840] [2020-04-18 10:46:35,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:35,963 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 10:46:35,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357664840] [2020-04-18 10:46:35,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:35,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 10:46:35,964 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:35,965 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:35,969 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 47 transitions. [2020-04-18 10:46:35,969 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:35,999 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 10:46:36,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:46:36,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:46:36,000 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 7 states. [2020-04-18 10:46:36,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:36,060 INFO L93 Difference]: Finished difference Result 113 states and 262 transitions. [2020-04-18 10:46:36,060 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 262 transitions. [2020-04-18 10:46:36,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:46:36,061 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:46:36,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:36,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1253040189, now seen corresponding path program 3 times [2020-04-18 10:46:36,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:36,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717501102] [2020-04-18 10:46:36,062 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:36,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:36,103 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 10:46:36,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717501102] [2020-04-18 10:46:36,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:36,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:46:36,104 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:36,105 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:36,108 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-04-18 10:46:36,109 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:36,127 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:46:36,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:46:36,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 10:46:36,127 INFO L87 Difference]: Start difference. First operand 113 states and 262 transitions. Second operand 5 states. [2020-04-18 10:46:36,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:36,175 INFO L93 Difference]: Finished difference Result 143 states and 309 transitions. [2020-04-18 10:46:36,176 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 309 transitions. [2020-04-18 10:46:36,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:46:36,176 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:46:36,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:36,177 INFO L82 PathProgramCache]: Analyzing trace with hash -484565939, now seen corresponding path program 4 times [2020-04-18 10:46:36,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:36,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778121952] [2020-04-18 10:46:36,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:36,208 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 10:46:36,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778121952] [2020-04-18 10:46:36,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:36,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:46:36,209 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:36,210 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:36,213 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 48 transitions. [2020-04-18 10:46:36,213 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:36,237 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:46:36,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:46:36,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-04-18 10:46:36,237 INFO L87 Difference]: Start difference. First operand 143 states and 309 transitions. Second operand 4 states. [2020-04-18 10:46:36,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:36,248 INFO L93 Difference]: Finished difference Result 143 states and 309 transitions. [2020-04-18 10:46:36,248 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 309 transitions. [2020-04-18 10:46:36,249 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:46:36,249 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1582638348] [2020-04-18 10:46:36,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:46:36,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 10:46:36,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1582638348] [2020-04-18 10:46:36,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 10:46:36,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:46:36,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 10:46:36,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-04-18 10:46:36,250 INFO L87 Difference]: Start difference. First operand 82 states and 170 transitions. Second operand 11 states. [2020-04-18 10:46:36,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:36,461 INFO L93 Difference]: Finished difference Result 84 states and 159 transitions. [2020-04-18 10:46:36,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-18 10:46:36,461 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-04-18 10:46:36,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:46:36,462 INFO L225 Difference]: With dead ends: 84 [2020-04-18 10:46:36,463 INFO L226 Difference]: Without dead ends: 70 [2020-04-18 10:46:36,464 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=625, Unknown=0, NotChecked=0, Total=812 [2020-04-18 10:46:36,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-04-18 10:46:36,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-04-18 10:46:36,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-04-18 10:46:36,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 133 transitions. [2020-04-18 10:46:36,467 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 133 transitions. Word has length 14 [2020-04-18 10:46:36,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:46:36,467 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 133 transitions. [2020-04-18 10:46:36,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 10:46:36,467 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 133 transitions. [2020-04-18 10:46:36,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:46:36,468 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:46:36,468 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:46:36,468 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:46:36,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:36,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1643108637, now seen corresponding path program 1 times [2020-04-18 10:46:36,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:46:36,469 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2098611686] [2020-04-18 10:46:36,469 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:36,471 INFO L259 McrAutomatonBuilder]: Finished intersection with 130 states and 330 transitions. [2020-04-18 10:46:36,472 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states. [2020-04-18 10:46:36,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:46:36,473 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:46:36,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:36,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1031588745, now seen corresponding path program 2 times [2020-04-18 10:46:36,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:36,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128740840] [2020-04-18 10:46:36,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:36,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:36,532 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 10:46:36,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128740840] [2020-04-18 10:46:36,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:36,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 10:46:36,533 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:36,535 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:36,538 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 55 transitions. [2020-04-18 10:46:36,538 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:36,576 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 10:46:36,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:46:36,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:46:36,577 INFO L87 Difference]: Start difference. First operand 130 states. Second operand 7 states. [2020-04-18 10:46:36,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:36,744 INFO L93 Difference]: Finished difference Result 150 states and 361 transitions. [2020-04-18 10:46:36,744 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 361 transitions. [2020-04-18 10:46:36,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:46:36,745 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:46:36,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:36,746 INFO L82 PathProgramCache]: Analyzing trace with hash 189540403, now seen corresponding path program 3 times [2020-04-18 10:46:36,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:36,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373571400] [2020-04-18 10:46:36,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:36,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:36,810 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 10:46:36,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373571400] [2020-04-18 10:46:36,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:36,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:46:36,811 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:36,812 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:36,815 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 35 transitions. [2020-04-18 10:46:36,815 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:36,850 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:46:36,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:46:36,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-04-18 10:46:36,851 INFO L87 Difference]: Start difference. First operand 150 states and 361 transitions. Second operand 5 states. [2020-04-18 10:46:36,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:36,900 INFO L93 Difference]: Finished difference Result 210 states and 485 transitions. [2020-04-18 10:46:36,900 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 485 transitions. [2020-04-18 10:46:36,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:46:36,901 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:46:36,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:36,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1727806603, now seen corresponding path program 4 times [2020-04-18 10:46:36,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:36,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731553039] [2020-04-18 10:46:36,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:36,933 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 10:46:36,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731553039] [2020-04-18 10:46:36,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:36,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:46:36,934 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:36,935 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:36,938 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 59 transitions. [2020-04-18 10:46:36,938 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:36,964 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:46:36,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:46:36,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2020-04-18 10:46:36,965 INFO L87 Difference]: Start difference. First operand 210 states and 485 transitions. Second operand 4 states. [2020-04-18 10:46:36,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:36,982 INFO L93 Difference]: Finished difference Result 253 states and 553 transitions. [2020-04-18 10:46:36,982 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 553 transitions. [2020-04-18 10:46:36,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:46:36,983 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:46:36,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:36,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1643108637, now seen corresponding path program 5 times [2020-04-18 10:46:36,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:36,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143838379] [2020-04-18 10:46:36,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:37,023 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 10:46:37,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143838379] [2020-04-18 10:46:37,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:37,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:46:37,024 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:37,025 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:37,028 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 71 transitions. [2020-04-18 10:46:37,028 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:37,134 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 10:46:37,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:46:37,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2020-04-18 10:46:37,135 INFO L87 Difference]: Start difference. First operand 253 states and 553 transitions. Second operand 7 states. [2020-04-18 10:46:37,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:37,155 INFO L93 Difference]: Finished difference Result 253 states and 553 transitions. [2020-04-18 10:46:37,156 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 553 transitions. [2020-04-18 10:46:37,156 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:46:37,157 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2098611686] [2020-04-18 10:46:37,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:46:37,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 10:46:37,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2098611686] [2020-04-18 10:46:37,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 10:46:37,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:46:37,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 10:46:37,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2020-04-18 10:46:37,158 INFO L87 Difference]: Start difference. First operand 70 states and 133 transitions. Second operand 14 states. [2020-04-18 10:46:37,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:37,360 INFO L93 Difference]: Finished difference Result 60 states and 106 transitions. [2020-04-18 10:46:37,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 10:46:37,360 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2020-04-18 10:46:37,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:46:37,361 INFO L225 Difference]: With dead ends: 60 [2020-04-18 10:46:37,361 INFO L226 Difference]: Without dead ends: 52 [2020-04-18 10:46:37,362 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=234, Invalid=888, Unknown=0, NotChecked=0, Total=1122 [2020-04-18 10:46:37,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-04-18 10:46:37,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-04-18 10:46:37,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-04-18 10:46:37,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 91 transitions. [2020-04-18 10:46:37,364 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 91 transitions. Word has length 15 [2020-04-18 10:46:37,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:46:37,365 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 91 transitions. [2020-04-18 10:46:37,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 10:46:37,365 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 91 transitions. [2020-04-18 10:46:37,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 10:46:37,365 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:46:37,366 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:46:37,366 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:46:37,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:37,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1105925332, now seen corresponding path program 1 times [2020-04-18 10:46:37,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:46:37,367 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1894007810] [2020-04-18 10:46:37,367 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:37,369 INFO L259 McrAutomatonBuilder]: Finished intersection with 170 states and 448 transitions. [2020-04-18 10:46:37,371 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-04-18 10:46:37,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 10:46:37,371 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:46:37,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:37,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1915367296, now seen corresponding path program 2 times [2020-04-18 10:46:37,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:37,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190637773] [2020-04-18 10:46:37,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:37,422 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 10:46:37,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190637773] [2020-04-18 10:46:37,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:37,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 10:46:37,423 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:37,424 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:37,428 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 65 transitions. [2020-04-18 10:46:37,428 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:37,467 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 10:46:37,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:46:37,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:46:37,467 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 7 states. [2020-04-18 10:46:37,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:37,634 INFO L93 Difference]: Finished difference Result 210 states and 530 transitions. [2020-04-18 10:46:37,635 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 530 transitions. [2020-04-18 10:46:37,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 10:46:37,635 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:46:37,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:37,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1581672470, now seen corresponding path program 3 times [2020-04-18 10:46:37,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:37,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191871345] [2020-04-18 10:46:37,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:37,669 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 10:46:37,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191871345] [2020-04-18 10:46:37,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:37,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:46:37,671 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:37,672 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:37,675 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 52 transitions. [2020-04-18 10:46:37,675 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:37,693 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:46:37,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:46:37,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-04-18 10:46:37,694 INFO L87 Difference]: Start difference. First operand 210 states and 530 transitions. Second operand 5 states. [2020-04-18 10:46:37,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:37,738 INFO L93 Difference]: Finished difference Result 306 states and 748 transitions. [2020-04-18 10:46:37,738 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 748 transitions. [2020-04-18 10:46:37,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 10:46:37,739 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:46:37,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:37,739 INFO L82 PathProgramCache]: Analyzing trace with hash -2022396938, now seen corresponding path program 4 times [2020-04-18 10:46:37,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:37,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070742888] [2020-04-18 10:46:37,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:37,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:37,802 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 10:46:37,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070742888] [2020-04-18 10:46:37,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:37,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:46:37,803 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:37,805 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:37,809 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 66 transitions. [2020-04-18 10:46:37,809 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:37,832 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:46:37,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:46:37,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2020-04-18 10:46:37,833 INFO L87 Difference]: Start difference. First operand 306 states and 748 transitions. Second operand 4 states. [2020-04-18 10:46:37,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:37,859 INFO L93 Difference]: Finished difference Result 412 states and 943 transitions. [2020-04-18 10:46:37,859 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 943 transitions. [2020-04-18 10:46:37,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 10:46:37,861 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:46:37,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:37,861 INFO L82 PathProgramCache]: Analyzing trace with hash 603240008, now seen corresponding path program 5 times [2020-04-18 10:46:37,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:37,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462491473] [2020-04-18 10:46:37,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:37,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:37,895 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 10:46:37,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462491473] [2020-04-18 10:46:37,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:37,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:46:37,896 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:37,897 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:37,901 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 78 transitions. [2020-04-18 10:46:37,901 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:37,992 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 10:46:37,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:46:37,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2020-04-18 10:46:37,993 INFO L87 Difference]: Start difference. First operand 412 states and 943 transitions. Second operand 7 states. [2020-04-18 10:46:38,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:38,047 INFO L93 Difference]: Finished difference Result 432 states and 963 transitions. [2020-04-18 10:46:38,048 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 963 transitions. [2020-04-18 10:46:38,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 10:46:38,049 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 10:46:38,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:38,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1105925332, now seen corresponding path program 6 times [2020-04-18 10:46:38,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:38,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413672179] [2020-04-18 10:46:38,050 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:38,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:38,083 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 10:46:38,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413672179] [2020-04-18 10:46:38,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:38,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 10:46:38,084 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:38,085 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:38,089 INFO L259 McrAutomatonBuilder]: Finished intersection with 44 states and 74 transitions. [2020-04-18 10:46:38,089 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:38,223 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 10:46:38,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 10:46:38,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2020-04-18 10:46:38,224 INFO L87 Difference]: Start difference. First operand 432 states and 963 transitions. Second operand 9 states. [2020-04-18 10:46:38,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:38,284 INFO L93 Difference]: Finished difference Result 432 states and 963 transitions. [2020-04-18 10:46:38,285 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 963 transitions. [2020-04-18 10:46:38,286 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:46:38,286 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1894007810] [2020-04-18 10:46:38,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:46:38,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 10:46:38,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1894007810] [2020-04-18 10:46:38,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 10:46:38,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:46:38,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 10:46:38,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2020-04-18 10:46:38,288 INFO L87 Difference]: Start difference. First operand 52 states and 91 transitions. Second operand 16 states. [2020-04-18 10:46:38,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:38,435 INFO L93 Difference]: Finished difference Result 46 states and 83 transitions. [2020-04-18 10:46:38,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 10:46:38,435 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2020-04-18 10:46:38,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:46:38,435 INFO L225 Difference]: With dead ends: 46 [2020-04-18 10:46:38,436 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 10:46:38,436 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 82 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=252, Invalid=938, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 10:46:38,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 10:46:38,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 10:46:38,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 10:46:38,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 10:46:38,437 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-04-18 10:46:38,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:46:38,437 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 10:46:38,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 10:46:38,437 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 10:46:38,438 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:46:38,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 10:46:38 BasicIcfg [2020-04-18 10:46:38,441 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 10:46:38,444 INFO L168 Benchmark]: Toolchain (without parser) took 7999.18 ms. Allocated memory was 137.4 MB in the beginning and 317.2 MB in the end (delta: 179.8 MB). Free memory was 99.8 MB in the beginning and 172.2 MB in the end (delta: -72.4 MB). Peak memory consumption was 107.5 MB. Max. memory is 7.1 GB. [2020-04-18 10:46:38,444 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: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 10:46:38,445 INFO L168 Benchmark]: CACSL2BoogieTranslator took 680.66 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 97.9 MB in the beginning and 159.2 MB in the end (delta: -61.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-04-18 10:46:38,445 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.66 ms. Allocated memory is still 202.4 MB. Free memory was 159.2 MB in the beginning and 157.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-04-18 10:46:38,446 INFO L168 Benchmark]: Boogie Preprocessor took 24.28 ms. Allocated memory is still 202.4 MB. Free memory was 157.0 MB in the beginning and 155.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 10:46:38,446 INFO L168 Benchmark]: RCFGBuilder took 478.45 ms. Allocated memory is still 202.4 MB. Free memory was 155.6 MB in the beginning and 133.1 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-04-18 10:46:38,447 INFO L168 Benchmark]: TraceAbstraction took 6741.71 ms. Allocated memory was 202.4 MB in the beginning and 317.2 MB in the end (delta: 114.8 MB). Free memory was 132.4 MB in the beginning and 172.2 MB in the end (delta: -39.7 MB). Peak memory consumption was 75.1 MB. Max. memory is 7.1 GB. [2020-04-18 10:46:38,452 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: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 680.66 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 97.9 MB in the beginning and 159.2 MB in the end (delta: -61.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.66 ms. Allocated memory is still 202.4 MB. Free memory was 159.2 MB in the beginning and 157.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.28 ms. Allocated memory is still 202.4 MB. Free memory was 157.0 MB in the beginning and 155.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 478.45 ms. Allocated memory is still 202.4 MB. Free memory was 155.6 MB in the beginning and 133.1 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6741.71 ms. Allocated memory was 202.4 MB in the beginning and 317.2 MB in the end (delta: 114.8 MB). Free memory was 132.4 MB in the beginning and 172.2 MB in the end (delta: -39.7 MB). Peak memory consumption was 75.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 78 ProgramPointsBefore, 32 ProgramPointsAfterwards, 70 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 660 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2250 CheckedPairsTotal, 55 TotalNumberOfCompositions - 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 184 SDtfs, 544 SDslu, 573 SDs, 0 SdLazy, 366 SolverSat, 101 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 436 GetRequests, 282 SyntacticMatches, 2 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1094 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 24 StatesRemovedByMinimization, 1 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...