/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/safe020_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:03:05,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:03:05,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:03:05,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:03:05,146 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:03:05,147 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:03:05,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:03:05,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:03:05,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:03:05,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:03:05,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:03:05,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:03:05,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:03:05,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:03:05,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:03:05,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:03:05,162 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:03:05,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:03:05,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:03:05,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:03:05,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:03:05,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:03:05,177 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:03:05,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:03:05,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:03:05,182 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:03:05,182 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:03:05,184 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:03:05,185 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:03:05,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:03:05,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:03:05,189 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:03:05,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:03:05,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:03:05,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:03:05,195 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:03:05,196 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:03:05,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:03:05,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:03:05,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:03:05,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:03:05,201 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 11:03:05,222 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:03:05,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:03:05,224 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:03:05,224 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:03:05,225 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:03:05,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:03:05,225 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:03:05,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:03:05,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:03:05,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:03:05,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:03:05,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:03:05,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:03:05,228 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:03:05,229 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:03:05,229 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:03:05,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:03:05,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:03:05,229 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:03:05,231 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:03:05,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:03:05,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:03:05,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:03:05,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:03:05,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:03:05,234 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:03:05,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:03:05,235 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:03:05,235 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:03:05,236 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:03:05,541 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:03:05,554 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:03:05,557 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:03:05,559 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:03:05,559 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:03:05,560 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i [2020-04-18 11:03:05,625 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d985a58e6/9e711d5d0d584fa5977da92a226f0a91/FLAGa0ed3e7ab [2020-04-18 11:03:06,164 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:03:06,164 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i [2020-04-18 11:03:06,188 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d985a58e6/9e711d5d0d584fa5977da92a226f0a91/FLAGa0ed3e7ab [2020-04-18 11:03:06,461 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d985a58e6/9e711d5d0d584fa5977da92a226f0a91 [2020-04-18 11:03:06,469 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:03:06,490 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:03:06,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:03:06,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:03:06,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:03:06,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:03:06" (1/1) ... [2020-04-18 11:03:06,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50c86ca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:03:06, skipping insertion in model container [2020-04-18 11:03:06,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:03:06" (1/1) ... [2020-04-18 11:03:06,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:03:06,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:03:07,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:03:07,058 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:03:07,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:03:07,197 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:03:07,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:03:07 WrapperNode [2020-04-18 11:03:07,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:03:07,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:03:07,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:03:07,199 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:03:07,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:03:07" (1/1) ... [2020-04-18 11:03:07,233 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:03:07" (1/1) ... [2020-04-18 11:03:07,256 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:03:07,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:03:07,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:03:07,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:03:07,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:03:07" (1/1) ... [2020-04-18 11:03:07,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:03:07" (1/1) ... [2020-04-18 11:03:07,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:03:07" (1/1) ... [2020-04-18 11:03:07,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:03:07" (1/1) ... [2020-04-18 11:03:07,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:03:07" (1/1) ... [2020-04-18 11:03:07,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:03:07" (1/1) ... [2020-04-18 11:03:07,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:03:07" (1/1) ... [2020-04-18 11:03:07,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:03:07,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:03:07,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:03:07,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:03:07,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:03:07" (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 11:03:07,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:03:07,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 11:03:07,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:03:07,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:03:07,356 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 11:03:07,356 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 11:03:07,356 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 11:03:07,356 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 11:03:07,357 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 11:03:07,357 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 11:03:07,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 11:03:07,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:03:07,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:03:07,359 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 11:03:07,756 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:03:07,756 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 11:03:07,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:03:07 BoogieIcfgContainer [2020-04-18 11:03:07,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:03:07,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:03:07,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:03:07,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:03:07,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:03:06" (1/3) ... [2020-04-18 11:03:07,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7f0ff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:03:07, skipping insertion in model container [2020-04-18 11:03:07,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:03:07" (2/3) ... [2020-04-18 11:03:07,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7f0ff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:03:07, skipping insertion in model container [2020-04-18 11:03:07,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:03:07" (3/3) ... [2020-04-18 11:03:07,770 INFO L109 eAbstractionObserver]: Analyzing ICFG safe020_tso.opt.i [2020-04-18 11:03:07,780 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:03:07,780 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:03:07,787 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:03:07,788 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:03:07,820 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:03:07,821 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:03:07,821 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:03:07,821 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:03:07,822 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:03:07,822 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:03:07,823 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:03:07,823 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:03:07,823 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:03:07,823 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:03:07,824 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:03:07,824 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:03:07,824 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:03:07,825 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:03:07,825 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:03:07,825 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:03:07,826 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:03:07,826 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:03:07,830 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:03:07,831 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:03:07,832 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:03:07,833 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:03:07,843 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:03:07,843 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:03:07,844 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:03:07,844 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:03:07,846 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:03:07,846 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:03:07,846 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:03:07,847 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:03:07,877 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 11:03:07,903 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:03:07,903 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:03:07,904 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:03:07,904 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:03:07,904 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:03:07,905 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:03:07,905 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:03:07,905 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:03:07,929 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-04-18 11:03:07,932 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-18 11:03:07,976 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-18 11:03:07,976 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:03:07,982 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 11:03:07,985 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-18 11:03:08,009 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-18 11:03:08,009 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:03:08,010 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 11:03:08,012 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-04-18 11:03:08,014 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:03:09,587 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-04-18 11:03:09,678 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2244 [2020-04-18 11:03:09,679 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-04-18 11:03:09,682 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 11:03:09,716 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-04-18 11:03:09,718 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-04-18 11:03:09,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:03:09,730 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:03:09,730 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:03:09,731 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:03:09,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:03:09,736 INFO L82 PathProgramCache]: Analyzing trace with hash 278619754, now seen corresponding path program 1 times [2020-04-18 11:03:09,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:03:09,741 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1360707468] [2020-04-18 11:03:09,755 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:03:09,769 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:03:09,771 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 11:03:09,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:03:09,772 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:03:09,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:03:09,774 INFO L82 PathProgramCache]: Analyzing trace with hash 278619754, now seen corresponding path program 2 times [2020-04-18 11:03:09,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:03:09,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898910533] [2020-04-18 11:03:09,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:03:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:03:09,966 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 11:03:09,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898910533] [2020-04-18 11:03:09,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:03:09,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:03:09,969 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:03:09,970 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:03:09,972 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:03:09,972 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:03:09,976 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:03:09,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 11:03:09,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:03:09,982 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 2 states. [2020-04-18 11:03:09,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:03:09,986 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 11:03:09,986 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 11:03:09,987 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:03:09,988 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1360707468] [2020-04-18 11:03:09,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:03:09,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:03:09,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1360707468] [2020-04-18 11:03:09,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 11:03:09,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:03:09,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 11:03:09,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:03:09,996 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-04-18 11:03:10,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:03:10,022 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-04-18 11:03:10,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 11:03:10,023 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-18 11:03:10,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:03:10,040 INFO L225 Difference]: With dead ends: 274 [2020-04-18 11:03:10,040 INFO L226 Difference]: Without dead ends: 226 [2020-04-18 11:03:10,042 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 11:03:10,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-04-18 11:03:10,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-04-18 11:03:10,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-04-18 11:03:10,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-04-18 11:03:10,110 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-04-18 11:03:10,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:03:10,111 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-04-18 11:03:10,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 11:03:10,111 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-04-18 11:03:10,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:03:10,113 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:03:10,113 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:03:10,113 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:03:10,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:03:10,114 INFO L82 PathProgramCache]: Analyzing trace with hash 47263938, now seen corresponding path program 1 times [2020-04-18 11:03:10,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:03:10,114 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1538311627] [2020-04-18 11:03:10,115 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:03:10,116 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:03:10,116 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 11:03:10,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:03:10,116 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:03:10,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:03:10,117 INFO L82 PathProgramCache]: Analyzing trace with hash 47263938, now seen corresponding path program 2 times [2020-04-18 11:03:10,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:03:10,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000808405] [2020-04-18 11:03:10,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:03:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:03:10,265 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 11:03:10,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000808405] [2020-04-18 11:03:10,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:03:10,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:03:10,266 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:03:10,267 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:03:10,269 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:03:10,269 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:03:10,281 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:03:10,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:03:10,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:03:10,282 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2020-04-18 11:03:10,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:03:10,298 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-04-18 11:03:10,298 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-04-18 11:03:10,299 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:03:10,299 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1538311627] [2020-04-18 11:03:10,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:03:10,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:03:10,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1538311627] [2020-04-18 11:03:10,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:03:10,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:03:10,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:03:10,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:03:10,301 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-04-18 11:03:10,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:03:10,329 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-04-18 11:03:10,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 11:03:10,330 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 11:03:10,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:03:10,333 INFO L225 Difference]: With dead ends: 250 [2020-04-18 11:03:10,333 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 11:03:10,334 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 11:03:10,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 11:03:10,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-18 11:03:10,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-18 11:03:10,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2020-04-18 11:03:10,366 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2020-04-18 11:03:10,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:03:10,367 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2020-04-18 11:03:10,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:03:10,367 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2020-04-18 11:03:10,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:03:10,372 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:03:10,372 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:03:10,372 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:03:10,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:03:10,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1465143248, now seen corresponding path program 1 times [2020-04-18 11:03:10,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:03:10,374 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2097553134] [2020-04-18 11:03:10,374 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:03:10,375 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-04-18 11:03:10,375 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-04-18 11:03:10,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:03:10,376 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:03:10,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:03:10,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1465182248, now seen corresponding path program 2 times [2020-04-18 11:03:10,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:03:10,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050149143] [2020-04-18 11:03:10,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:03:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:03:10,471 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 11:03:10,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050149143] [2020-04-18 11:03:10,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:03:10,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:03:10,475 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:03:10,476 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:03:10,477 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 12 transitions. [2020-04-18 11:03:10,478 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:03:10,491 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:03:10,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:03:10,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:03:10,491 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 4 states. [2020-04-18 11:03:10,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:03:10,509 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2020-04-18 11:03:10,509 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-04-18 11:03:10,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:03:10,510 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:03:10,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:03:10,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1465143248, now seen corresponding path program 3 times [2020-04-18 11:03:10,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:03:10,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300764620] [2020-04-18 11:03:10,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:03:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:03:10,603 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 11:03:10,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300764620] [2020-04-18 11:03:10,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:03:10,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:03:10,604 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:03:10,605 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:03:10,609 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 12 transitions. [2020-04-18 11:03:10,610 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:03:10,621 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:03:10,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:03:10,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:03:10,622 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 5 states. [2020-04-18 11:03:10,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:03:10,654 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2020-04-18 11:03:10,654 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-04-18 11:03:10,654 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:03:10,655 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2097553134] [2020-04-18 11:03:10,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:03:10,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:03:10,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2097553134] [2020-04-18 11:03:10,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:03:10,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:03:10,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:03:10,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:03:10,657 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 5 states. [2020-04-18 11:03:10,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:03:10,686 INFO L93 Difference]: Finished difference Result 262 states and 697 transitions. [2020-04-18 11:03:10,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:03:10,687 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-18 11:03:10,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:03:10,688 INFO L225 Difference]: With dead ends: 262 [2020-04-18 11:03:10,688 INFO L226 Difference]: Without dead ends: 154 [2020-04-18 11:03:10,689 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:03:10,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-04-18 11:03:10,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-04-18 11:03:10,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-04-18 11:03:10,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 392 transitions. [2020-04-18 11:03:10,698 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 392 transitions. Word has length 10 [2020-04-18 11:03:10,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:03:10,698 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 392 transitions. [2020-04-18 11:03:10,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:03:10,699 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 392 transitions. [2020-04-18 11:03:10,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:03:10,700 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:03:10,700 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:03:10,700 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:03:10,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:03:10,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1312152701, now seen corresponding path program 1 times [2020-04-18 11:03:10,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:03:10,701 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1080405368] [2020-04-18 11:03:10,702 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:03:10,702 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 38 transitions. [2020-04-18 11:03:10,703 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-04-18 11:03:10,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:03:10,703 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:03:10,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:03:10,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1312113701, now seen corresponding path program 2 times [2020-04-18 11:03:10,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:03:10,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966034730] [2020-04-18 11:03:10,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:03:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:03:10,753 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 11:03:10,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966034730] [2020-04-18 11:03:10,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:03:10,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:03:10,754 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:03:10,755 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:03:10,757 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-04-18 11:03:10,758 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:03:10,769 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:03:10,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:03:10,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:03:10,770 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2020-04-18 11:03:10,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:03:10,785 INFO L93 Difference]: Finished difference Result 28 states and 42 transitions. [2020-04-18 11:03:10,785 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2020-04-18 11:03:10,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:03:10,786 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:03:10,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:03:10,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1312152701, now seen corresponding path program 3 times [2020-04-18 11:03:10,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:03:10,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390997202] [2020-04-18 11:03:10,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:03:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:03:10,862 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 11:03:10,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390997202] [2020-04-18 11:03:10,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:03:10,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:03:10,864 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:03:10,865 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:03:10,867 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 19 transitions. [2020-04-18 11:03:10,867 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:03:10,899 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:03:10,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:03:10,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:03:10,900 INFO L87 Difference]: Start difference. First operand 28 states and 42 transitions. Second operand 4 states. [2020-04-18 11:03:10,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:03:10,915 INFO L93 Difference]: Finished difference Result 28 states and 42 transitions. [2020-04-18 11:03:10,916 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2020-04-18 11:03:10,916 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:03:10,917 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1080405368] [2020-04-18 11:03:10,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:03:10,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:03:10,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1080405368] [2020-04-18 11:03:10,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:03:10,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:03:10,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:03:10,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:03:10,918 INFO L87 Difference]: Start difference. First operand 154 states and 392 transitions. Second operand 5 states. [2020-04-18 11:03:10,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:03:10,950 INFO L93 Difference]: Finished difference Result 174 states and 426 transitions. [2020-04-18 11:03:10,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 11:03:10,952 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-04-18 11:03:10,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:03:10,954 INFO L225 Difference]: With dead ends: 174 [2020-04-18 11:03:10,954 INFO L226 Difference]: Without dead ends: 150 [2020-04-18 11:03:10,954 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 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 11:03:10,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-04-18 11:03:10,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-04-18 11:03:10,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-04-18 11:03:10,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 378 transitions. [2020-04-18 11:03:10,970 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 378 transitions. Word has length 11 [2020-04-18 11:03:10,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:03:10,971 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 378 transitions. [2020-04-18 11:03:10,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:03:10,972 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 378 transitions. [2020-04-18 11:03:10,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:03:10,973 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:03:10,973 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:03:10,974 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:03:10,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:03:10,975 INFO L82 PathProgramCache]: Analyzing trace with hash 266026162, now seen corresponding path program 1 times [2020-04-18 11:03:10,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:03:10,975 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2081489005] [2020-04-18 11:03:10,976 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:03:10,977 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 96 transitions. [2020-04-18 11:03:10,977 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-04-18 11:03:10,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:03:10,981 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:03:10,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:03:10,982 INFO L82 PathProgramCache]: Analyzing trace with hash 266065162, now seen corresponding path program 2 times [2020-04-18 11:03:10,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:03:10,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946166039] [2020-04-18 11:03:10,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:03:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:03:11,062 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 11:03:11,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946166039] [2020-04-18 11:03:11,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:03:11,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:03:11,063 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:03:11,065 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:03:11,068 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 45 transitions. [2020-04-18 11:03:11,069 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:03:11,089 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:03:11,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:03:11,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:03:11,090 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 4 states. [2020-04-18 11:03:11,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:03:11,107 INFO L93 Difference]: Finished difference Result 54 states and 108 transitions. [2020-04-18 11:03:11,107 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 108 transitions. [2020-04-18 11:03:11,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:03:11,107 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:03:11,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:03:11,108 INFO L82 PathProgramCache]: Analyzing trace with hash 266026162, now seen corresponding path program 3 times [2020-04-18 11:03:11,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:03:11,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308003691] [2020-04-18 11:03:11,109 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:03:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:03:11,150 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 11:03:11,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308003691] [2020-04-18 11:03:11,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:03:11,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:03:11,151 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:03:11,152 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:03:11,155 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 46 transitions. [2020-04-18 11:03:11,155 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:03:11,189 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:03:11,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:03:11,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:03:11,189 INFO L87 Difference]: Start difference. First operand 54 states and 108 transitions. Second operand 4 states. [2020-04-18 11:03:11,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:03:11,204 INFO L93 Difference]: Finished difference Result 54 states and 108 transitions. [2020-04-18 11:03:11,204 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 108 transitions. [2020-04-18 11:03:11,204 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:03:11,205 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2081489005] [2020-04-18 11:03:11,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:03:11,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:03:11,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2081489005] [2020-04-18 11:03:11,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 11:03:11,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:03:11,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:03:11,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:03:11,206 INFO L87 Difference]: Start difference. First operand 150 states and 378 transitions. Second operand 6 states. [2020-04-18 11:03:11,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:03:11,293 INFO L93 Difference]: Finished difference Result 164 states and 376 transitions. [2020-04-18 11:03:11,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 11:03:11,293 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-04-18 11:03:11,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:03:11,294 INFO L225 Difference]: With dead ends: 164 [2020-04-18 11:03:11,294 INFO L226 Difference]: Without dead ends: 128 [2020-04-18 11:03:11,294 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:03:11,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-04-18 11:03:11,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-04-18 11:03:11,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-04-18 11:03:11,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 293 transitions. [2020-04-18 11:03:11,300 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 293 transitions. Word has length 12 [2020-04-18 11:03:11,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:03:11,300 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 293 transitions. [2020-04-18 11:03:11,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 11:03:11,301 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 293 transitions. [2020-04-18 11:03:11,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:03:11,301 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:03:11,301 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:03:11,302 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:03:11,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:03:11,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1292455845, now seen corresponding path program 1 times [2020-04-18 11:03:11,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:03:11,303 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1542275380] [2020-04-18 11:03:11,303 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:03:11,305 INFO L259 McrAutomatonBuilder]: Finished intersection with 66 states and 150 transitions. [2020-04-18 11:03:11,306 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-04-18 11:03:11,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:03:11,307 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:03:11,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:03:11,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1292416845, now seen corresponding path program 2 times [2020-04-18 11:03:11,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:03:11,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161769144] [2020-04-18 11:03:11,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:03:11,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:03:11,352 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 11:03:11,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161769144] [2020-04-18 11:03:11,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:03:11,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:03:11,354 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:03:11,355 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:03:11,359 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 49 transitions. [2020-04-18 11:03:11,360 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:03:11,375 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:03:11,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:03:11,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:03:11,375 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 4 states. [2020-04-18 11:03:11,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:03:11,399 INFO L93 Difference]: Finished difference Result 78 states and 170 transitions. [2020-04-18 11:03:11,399 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 170 transitions. [2020-04-18 11:03:11,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:03:11,399 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:03:11,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:03:11,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1292455845, now seen corresponding path program 3 times [2020-04-18 11:03:11,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:03:11,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964851909] [2020-04-18 11:03:11,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:03:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:03:11,489 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 11:03:11,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964851909] [2020-04-18 11:03:11,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:03:11,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:03:11,490 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:03:11,492 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:03:11,496 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 59 transitions. [2020-04-18 11:03:11,496 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:03:11,523 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:03:11,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:03:11,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:03:11,524 INFO L87 Difference]: Start difference. First operand 78 states and 170 transitions. Second operand 5 states. [2020-04-18 11:03:11,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:03:11,556 INFO L93 Difference]: Finished difference Result 78 states and 170 transitions. [2020-04-18 11:03:11,557 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 170 transitions. [2020-04-18 11:03:11,557 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:03:11,558 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1542275380] [2020-04-18 11:03:11,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:03:11,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:03:11,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1542275380] [2020-04-18 11:03:11,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 11:03:11,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:03:11,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:03:11,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:03:11,560 INFO L87 Difference]: Start difference. First operand 128 states and 293 transitions. Second operand 7 states. [2020-04-18 11:03:11,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:03:11,657 INFO L93 Difference]: Finished difference Result 116 states and 240 transitions. [2020-04-18 11:03:11,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 11:03:11,657 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-04-18 11:03:11,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:03:11,658 INFO L225 Difference]: With dead ends: 116 [2020-04-18 11:03:11,658 INFO L226 Difference]: Without dead ends: 92 [2020-04-18 11:03:11,659 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-04-18 11:03:11,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-04-18 11:03:11,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-04-18 11:03:11,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-04-18 11:03:11,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 186 transitions. [2020-04-18 11:03:11,663 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 186 transitions. Word has length 13 [2020-04-18 11:03:11,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:03:11,663 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 186 transitions. [2020-04-18 11:03:11,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 11:03:11,663 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 186 transitions. [2020-04-18 11:03:11,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:03:11,664 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:03:11,664 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:03:11,664 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:03:11,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:03:11,664 INFO L82 PathProgramCache]: Analyzing trace with hash -228576461, now seen corresponding path program 1 times [2020-04-18 11:03:11,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:03:11,665 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1925635280] [2020-04-18 11:03:11,665 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:03:11,666 INFO L259 McrAutomatonBuilder]: Finished intersection with 58 states and 118 transitions. [2020-04-18 11:03:11,667 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-04-18 11:03:11,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:03:11,668 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:03:11,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:03:11,668 INFO L82 PathProgramCache]: Analyzing trace with hash 710821399, now seen corresponding path program 2 times [2020-04-18 11:03:11,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:03:11,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510016744] [2020-04-18 11:03:11,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:03:11,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:03:11,713 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 11:03:11,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510016744] [2020-04-18 11:03:11,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:03:11,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:03:11,716 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:03:11,717 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:03:11,719 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-04-18 11:03:11,719 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:03:11,735 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:03:11,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:03:11,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:03:11,735 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 4 states. [2020-04-18 11:03:11,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:03:11,751 INFO L93 Difference]: Finished difference Result 76 states and 151 transitions. [2020-04-18 11:03:11,751 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 151 transitions. [2020-04-18 11:03:11,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:03:11,752 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:03:11,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:03:11,752 INFO L82 PathProgramCache]: Analyzing trace with hash 673342399, now seen corresponding path program 3 times [2020-04-18 11:03:11,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:03:11,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855737231] [2020-04-18 11:03:11,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:03:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:03:11,787 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 11:03:11,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855737231] [2020-04-18 11:03:11,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:03:11,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:03:11,788 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:03:11,789 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:03:11,791 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-04-18 11:03:11,791 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:03:11,799 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:03:11,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:03:11,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:03:11,800 INFO L87 Difference]: Start difference. First operand 76 states and 151 transitions. Second operand 4 states. [2020-04-18 11:03:11,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:03:11,815 INFO L93 Difference]: Finished difference Result 88 states and 171 transitions. [2020-04-18 11:03:11,816 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 171 transitions. [2020-04-18 11:03:11,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:03:11,816 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:03:11,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:03:11,817 INFO L82 PathProgramCache]: Analyzing trace with hash 671669119, now seen corresponding path program 4 times [2020-04-18 11:03:11,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:03:11,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272233240] [2020-04-18 11:03:11,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:03:11,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:03:11,875 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 11:03:11,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272233240] [2020-04-18 11:03:11,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:03:11,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:03:11,876 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:03:11,877 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:03:11,879 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-04-18 11:03:11,879 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:03:11,890 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:03:11,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:03:11,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:03:11,890 INFO L87 Difference]: Start difference. First operand 88 states and 171 transitions. Second operand 4 states. [2020-04-18 11:03:11,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:03:11,908 INFO L93 Difference]: Finished difference Result 88 states and 171 transitions. [2020-04-18 11:03:11,908 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 171 transitions. [2020-04-18 11:03:11,908 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:03:11,909 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1925635280] [2020-04-18 11:03:11,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:03:11,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:03:11,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1925635280] [2020-04-18 11:03:11,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 11:03:11,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:03:11,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:03:11,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:03:11,910 INFO L87 Difference]: Start difference. First operand 92 states and 186 transitions. Second operand 6 states. [2020-04-18 11:03:11,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:03:11,936 INFO L93 Difference]: Finished difference Result 120 states and 228 transitions. [2020-04-18 11:03:11,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 11:03:11,936 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-04-18 11:03:11,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:03:11,937 INFO L225 Difference]: With dead ends: 120 [2020-04-18 11:03:11,937 INFO L226 Difference]: Without dead ends: 94 [2020-04-18 11:03:11,938 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:03:11,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-04-18 11:03:11,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2020-04-18 11:03:11,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-04-18 11:03:11,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 175 transitions. [2020-04-18 11:03:11,941 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 175 transitions. Word has length 14 [2020-04-18 11:03:11,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:03:11,941 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 175 transitions. [2020-04-18 11:03:11,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 11:03:11,942 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 175 transitions. [2020-04-18 11:03:11,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:03:11,942 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:03:11,942 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:03:11,943 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:03:11,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:03:11,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1357686433, now seen corresponding path program 1 times [2020-04-18 11:03:11,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:03:11,944 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [391642770] [2020-04-18 11:03:11,944 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:03:11,946 INFO L259 McrAutomatonBuilder]: Finished intersection with 130 states and 330 transitions. [2020-04-18 11:03:11,947 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states. [2020-04-18 11:03:11,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:03:11,948 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:03:11,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:03:11,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1328851933, now seen corresponding path program 2 times [2020-04-18 11:03:11,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:03:11,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852860323] [2020-04-18 11:03:11,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:03:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:03:11,990 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 11:03:11,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852860323] [2020-04-18 11:03:11,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:03:11,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:03:11,991 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:03:11,993 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:03:11,996 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 74 transitions. [2020-04-18 11:03:11,997 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:03:12,013 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:03:12,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:03:12,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:03:12,014 INFO L87 Difference]: Start difference. First operand 130 states. Second operand 5 states. [2020-04-18 11:03:12,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:03:12,053 INFO L93 Difference]: Finished difference Result 186 states and 450 transitions. [2020-04-18 11:03:12,053 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 450 transitions. [2020-04-18 11:03:12,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:03:12,054 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:03:12,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:03:12,054 INFO L82 PathProgramCache]: Analyzing trace with hash -768644663, now seen corresponding path program 3 times [2020-04-18 11:03:12,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:03:12,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229729866] [2020-04-18 11:03:12,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:03:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:03:12,090 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 11:03:12,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229729866] [2020-04-18 11:03:12,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:03:12,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:03:12,092 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:03:12,093 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:03:12,096 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 65 transitions. [2020-04-18 11:03:12,097 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:03:12,107 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:03:12,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:03:12,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:03:12,108 INFO L87 Difference]: Start difference. First operand 186 states and 450 transitions. Second operand 4 states. [2020-04-18 11:03:12,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:03:12,135 INFO L93 Difference]: Finished difference Result 226 states and 520 transitions. [2020-04-18 11:03:12,135 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 520 transitions. [2020-04-18 11:03:12,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:03:12,136 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:03:12,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:03:12,136 INFO L82 PathProgramCache]: Analyzing trace with hash -804564983, now seen corresponding path program 4 times [2020-04-18 11:03:12,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:03:12,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021579774] [2020-04-18 11:03:12,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:03:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:03:12,199 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 11:03:12,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021579774] [2020-04-18 11:03:12,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:03:12,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:03:12,201 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:03:12,202 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:03:12,209 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 65 transitions. [2020-04-18 11:03:12,209 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:03:12,249 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:03:12,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:03:12,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-04-18 11:03:12,250 INFO L87 Difference]: Start difference. First operand 226 states and 520 transitions. Second operand 5 states. [2020-04-18 11:03:12,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:03:12,297 INFO L93 Difference]: Finished difference Result 242 states and 536 transitions. [2020-04-18 11:03:12,297 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 536 transitions. [2020-04-18 11:03:12,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:03:12,298 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:03:12,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:03:12,299 INFO L82 PathProgramCache]: Analyzing trace with hash -799092577, now seen corresponding path program 5 times [2020-04-18 11:03:12,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:03:12,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702869313] [2020-04-18 11:03:12,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:03:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:03:12,403 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 11:03:12,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702869313] [2020-04-18 11:03:12,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:03:12,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:03:12,405 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:03:12,406 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:03:12,409 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 49 transitions. [2020-04-18 11:03:12,409 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:03:12,484 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:03:12,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:03:12,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-04-18 11:03:12,484 INFO L87 Difference]: Start difference. First operand 242 states and 536 transitions. Second operand 7 states. [2020-04-18 11:03:12,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:03:12,548 INFO L93 Difference]: Finished difference Result 242 states and 536 transitions. [2020-04-18 11:03:12,549 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 536 transitions. [2020-04-18 11:03:12,549 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:03:12,550 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [391642770] [2020-04-18 11:03:12,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:03:12,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:03:12,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [391642770] [2020-04-18 11:03:12,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 11:03:12,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:03:12,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:03:12,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-04-18 11:03:12,552 INFO L87 Difference]: Start difference. First operand 90 states and 175 transitions. Second operand 11 states. [2020-04-18 11:03:12,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:03:12,995 INFO L93 Difference]: Finished difference Result 98 states and 185 transitions. [2020-04-18 11:03:12,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-18 11:03:12,995 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-04-18 11:03:12,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:03:12,996 INFO L225 Difference]: With dead ends: 98 [2020-04-18 11:03:12,996 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:03:12,996 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=268, Invalid=992, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 11:03:12,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:03:12,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:03:12,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:03:12,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:03:12,997 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-04-18 11:03:12,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:03:12,998 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:03:12,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 11:03:12,998 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:03:12,998 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:03:13,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:03:13 BasicIcfg [2020-04-18 11:03:13,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:03:13,005 INFO L168 Benchmark]: Toolchain (without parser) took 6534.41 ms. Allocated memory was 138.9 MB in the beginning and 284.7 MB in the end (delta: 145.8 MB). Free memory was 102.3 MB in the beginning and 95.7 MB in the end (delta: 6.6 MB). Peak memory consumption was 152.4 MB. Max. memory is 7.1 GB. [2020-04-18 11:03:13,006 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory is still 121.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 11:03:13,007 INFO L168 Benchmark]: CACSL2BoogieTranslator took 707.50 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 100.5 MB in the beginning and 158.4 MB in the end (delta: -57.8 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:03:13,007 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.21 ms. Allocated memory is still 203.9 MB. Free memory was 158.4 MB in the beginning and 156.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:03:13,008 INFO L168 Benchmark]: Boogie Preprocessor took 27.51 ms. Allocated memory is still 203.9 MB. Free memory was 156.4 MB in the beginning and 155.4 MB in the end (delta: 995.3 kB). Peak memory consumption was 995.3 kB. Max. memory is 7.1 GB. [2020-04-18 11:03:13,008 INFO L168 Benchmark]: RCFGBuilder took 476.86 ms. Allocated memory is still 203.9 MB. Free memory was 155.4 MB in the beginning and 132.6 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-04-18 11:03:13,009 INFO L168 Benchmark]: TraceAbstraction took 5240.94 ms. Allocated memory was 203.9 MB in the beginning and 284.7 MB in the end (delta: 80.7 MB). Free memory was 132.6 MB in the beginning and 95.7 MB in the end (delta: 36.9 MB). Peak memory consumption was 117.7 MB. Max. memory is 7.1 GB. [2020-04-18 11:03:13,012 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory is still 121.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 707.50 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 100.5 MB in the beginning and 158.4 MB in the end (delta: -57.8 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 57.21 ms. Allocated memory is still 203.9 MB. Free memory was 158.4 MB in the beginning and 156.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.51 ms. Allocated memory is still 203.9 MB. Free memory was 156.4 MB in the beginning and 155.4 MB in the end (delta: 995.3 kB). Peak memory consumption was 995.3 kB. Max. memory is 7.1 GB. * RCFGBuilder took 476.86 ms. Allocated memory is still 203.9 MB. Free memory was 155.4 MB in the beginning and 132.6 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5240.94 ms. Allocated memory was 203.9 MB in the beginning and 284.7 MB in the end (delta: 80.7 MB). Free memory was 132.6 MB in the beginning and 95.7 MB in the end (delta: 36.9 MB). Peak memory consumption was 117.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 76 ProgramPointsBefore, 31 ProgramPointsAfterwards, 68 TransitionsBefore, 22 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 609 VarBasedMoverChecksPositive, 27 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2244 CheckedPairsTotal, 56 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, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 163 SDtfs, 170 SDslu, 368 SDs, 0 SdLazy, 247 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 288 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred 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, 8 MinimizatonAttempts, 4 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...