/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/safe003_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 10:38:33,253 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 10:38:33,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 10:38:33,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 10:38:33,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 10:38:33,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 10:38:33,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 10:38:33,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 10:38:33,291 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 10:38:33,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 10:38:33,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 10:38:33,297 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 10:38:33,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 10:38:33,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 10:38:33,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 10:38:33,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 10:38:33,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 10:38:33,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 10:38:33,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 10:38:33,311 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 10:38:33,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 10:38:33,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 10:38:33,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 10:38:33,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 10:38:33,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 10:38:33,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 10:38:33,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 10:38:33,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 10:38:33,320 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 10:38:33,321 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 10:38:33,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 10:38:33,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 10:38:33,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 10:38:33,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 10:38:33,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 10:38:33,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 10:38:33,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 10:38:33,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 10:38:33,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 10:38:33,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 10:38:33,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 10:38:33,328 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf [2020-04-18 10:38:33,362 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 10:38:33,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 10:38:33,366 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 10:38:33,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 10:38:33,367 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 10:38:33,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 10:38:33,370 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 10:38:33,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 10:38:33,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 10:38:33,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 10:38:33,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 10:38:33,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 10:38:33,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 10:38:33,371 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 10:38:33,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 10:38:33,371 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 10:38:33,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 10:38:33,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 10:38:33,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 10:38:33,372 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 10:38:33,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 10:38:33,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 10:38:33,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 10:38:33,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 10:38:33,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 10:38:33,374 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 10:38:33,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 10:38:33,374 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 10:38:33,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 10:38:33,375 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 10:38:33,659 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 10:38:33,679 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 10:38:33,683 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 10:38:33,684 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 10:38:33,685 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 10:38:33,686 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe003_tso.opt.i [2020-04-18 10:38:33,760 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06325ad67/34d9ab9177d7417da21c7504d9222c64/FLAG495f477a7 [2020-04-18 10:38:34,321 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 10:38:34,321 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe003_tso.opt.i [2020-04-18 10:38:34,346 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06325ad67/34d9ab9177d7417da21c7504d9222c64/FLAG495f477a7 [2020-04-18 10:38:34,590 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06325ad67/34d9ab9177d7417da21c7504d9222c64 [2020-04-18 10:38:34,599 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 10:38:34,615 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 10:38:34,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 10:38:34,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 10:38:34,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 10:38:34,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:38:34" (1/1) ... [2020-04-18 10:38:34,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d5b73c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:38:34, skipping insertion in model container [2020-04-18 10:38:34,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:38:34" (1/1) ... [2020-04-18 10:38:34,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 10:38:34,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 10:38:35,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:38:35,257 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 10:38:35,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:38:35,371 INFO L208 MainTranslator]: Completed translation [2020-04-18 10:38:35,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:38:35 WrapperNode [2020-04-18 10:38:35,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 10:38:35,372 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 10:38:35,373 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 10:38:35,373 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 10:38:35,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:38:35" (1/1) ... [2020-04-18 10:38:35,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:38:35" (1/1) ... [2020-04-18 10:38:35,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 10:38:35,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 10:38:35,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 10:38:35,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 10:38:35,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:38:35" (1/1) ... [2020-04-18 10:38:35,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:38:35" (1/1) ... [2020-04-18 10:38:35,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:38:35" (1/1) ... [2020-04-18 10:38:35,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:38:35" (1/1) ... [2020-04-18 10:38:35,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:38:35" (1/1) ... [2020-04-18 10:38:35,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:38:35" (1/1) ... [2020-04-18 10:38:35,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:38:35" (1/1) ... [2020-04-18 10:38:35,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 10:38:35,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 10:38:35,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 10:38:35,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 10:38:35,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:38:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 10:38:35,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 10:38:35,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 10:38:35,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 10:38:35,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 10:38:35,518 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 10:38:35,518 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 10:38:35,518 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 10:38:35,518 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 10:38:35,519 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 10:38:35,519 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 10:38:35,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 10:38:35,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 10:38:35,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 10:38:35,521 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 10:38:35,917 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 10:38:35,918 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 10:38:35,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:38:35 BoogieIcfgContainer [2020-04-18 10:38:35,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 10:38:35,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 10:38:35,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 10:38:35,928 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 10:38:35,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 10:38:34" (1/3) ... [2020-04-18 10:38:35,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a55768d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:38:35, skipping insertion in model container [2020-04-18 10:38:35,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:38:35" (2/3) ... [2020-04-18 10:38:35,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a55768d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:38:35, skipping insertion in model container [2020-04-18 10:38:35,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:38:35" (3/3) ... [2020-04-18 10:38:35,934 INFO L109 eAbstractionObserver]: Analyzing ICFG safe003_tso.opt.i [2020-04-18 10:38:35,943 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 10:38:35,943 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 10:38:35,949 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 10:38:35,950 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 10:38:35,977 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:38:35,978 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:38:35,978 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:38:35,978 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:38:35,979 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:38:35,979 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:38:35,980 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:38:35,980 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:38:35,980 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:38:35,981 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:38:35,981 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:38:35,982 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:38:35,982 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:38:35,982 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:38:35,983 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:38:35,983 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:38:35,983 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:38:35,983 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:38:35,988 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:38:35,988 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:38:35,989 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:38:35,989 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:38:35,996 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:38:35,996 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:38:35,997 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:38:35,997 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:38:36,002 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:38:36,002 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:38:36,002 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:38:36,003 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:38:36,025 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 10:38:36,047 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 10:38:36,048 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 10:38:36,048 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 10:38:36,048 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 10:38:36,048 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 10:38:36,049 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 10:38:36,049 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 10:38:36,049 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 10:38:36,074 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 10:38:36,076 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 10:38:36,142 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 10:38:36,142 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:38:36,148 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 10:38:36,150 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 10:38:36,170 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 10:38:36,171 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:38:36,171 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 10:38:36,173 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 10:38:36,175 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 10:38:37,874 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 10:38:38,080 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-04-18 10:38:38,080 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-04-18 10:38:38,084 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 10:38:38,111 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 10:38:38,114 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 10:38:38,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:38:38,122 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:38:38,123 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:38:38,123 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:38:38,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:38:38,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-04-18 10:38:38,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:38:38,138 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [904439544] [2020-04-18 10:38:38,155 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:38:38,168 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:38:38,170 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 10:38:38,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:38:38,170 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:38:38,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:38:38,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 2 times [2020-04-18 10:38:38,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:38:38,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995481808] [2020-04-18 10:38:38,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:38:38,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:38:38,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:38:38,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995481808] [2020-04-18 10:38:38,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:38:38,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 10:38:38,397 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:38:38,400 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:38:38,404 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:38:38,405 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:38:38,413 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:38:38,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:38:38,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:38:38,421 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 10:38:38,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:38:38,426 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 10:38:38,426 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 10:38:38,427 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:38:38,428 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [904439544] [2020-04-18 10:38:38,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:38:38,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 10:38:38,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [904439544] [2020-04-18 10:38:38,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 10:38:38,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:38:38,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:38:38,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:38:38,437 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 10:38:38,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:38:38,501 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-04-18 10:38:38,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 10:38:38,505 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 10:38:38,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:38:38,526 INFO L225 Difference]: With dead ends: 290 [2020-04-18 10:38:38,526 INFO L226 Difference]: Without dead ends: 226 [2020-04-18 10:38:38,531 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:38:38,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-04-18 10:38:38,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-04-18 10:38:38,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-04-18 10:38:38,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-04-18 10:38:38,646 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-04-18 10:38:38,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:38:38,647 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-04-18 10:38:38,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 10:38:38,647 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-04-18 10:38:38,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:38:38,650 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:38:38,650 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:38:38,650 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:38:38,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:38:38,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 1 times [2020-04-18 10:38:38,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:38:38,652 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1123384186] [2020-04-18 10:38:38,652 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:38:38,653 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-04-18 10:38:38,654 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 10:38:38,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:38:38,654 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:38:38,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:38:38,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 2 times [2020-04-18 10:38:38,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:38:38,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290322137] [2020-04-18 10:38:38,657 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:38:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:38:38,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:38:38,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290322137] [2020-04-18 10:38:38,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:38:38,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 10:38:38,740 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:38:38,741 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:38:38,743 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-04-18 10:38:38,743 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:38:38,753 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:38:38,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:38:38,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:38:38,754 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2020-04-18 10:38:38,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:38:38,755 INFO L93 Difference]: Finished difference Result 16 states and 21 transitions. [2020-04-18 10:38:38,755 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2020-04-18 10:38:38,756 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:38:38,756 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1123384186] [2020-04-18 10:38:38,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:38:38,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 10:38:38,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1123384186] [2020-04-18 10:38:38,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 10:38:38,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:38:38,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:38:38,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:38:38,758 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-04-18 10:38:38,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:38:38,767 INFO L93 Difference]: Finished difference Result 212 states and 578 transitions. [2020-04-18 10:38:38,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 10:38:38,767 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-18 10:38:38,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:38:38,774 INFO L225 Difference]: With dead ends: 212 [2020-04-18 10:38:38,775 INFO L226 Difference]: Without dead ends: 212 [2020-04-18 10:38:38,779 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:38:38,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-04-18 10:38:38,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2020-04-18 10:38:38,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-04-18 10:38:38,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 578 transitions. [2020-04-18 10:38:38,810 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 578 transitions. Word has length 9 [2020-04-18 10:38:38,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:38:38,811 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 578 transitions. [2020-04-18 10:38:38,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 10:38:38,811 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 578 transitions. [2020-04-18 10:38:38,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:38:38,813 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:38:38,813 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:38:38,813 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:38:38,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:38:38,814 INFO L82 PathProgramCache]: Analyzing trace with hash -2042366299, now seen corresponding path program 1 times [2020-04-18 10:38:38,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:38:38,814 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [543641335] [2020-04-18 10:38:38,815 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:38:38,816 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 34 transitions. [2020-04-18 10:38:38,816 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-04-18 10:38:38,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:38:38,817 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:38:38,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:38:38,817 INFO L82 PathProgramCache]: Analyzing trace with hash -2042366299, now seen corresponding path program 2 times [2020-04-18 10:38:38,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:38:38,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397048094] [2020-04-18 10:38:38,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:38:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:38:38,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:38:38,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397048094] [2020-04-18 10:38:38,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:38:38,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 10:38:38,867 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:38:38,868 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:38:38,870 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 22 transitions. [2020-04-18 10:38:38,870 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:38:38,874 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:38:38,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:38:38,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:38:38,875 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2020-04-18 10:38:38,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:38:38,875 INFO L93 Difference]: Finished difference Result 22 states and 34 transitions. [2020-04-18 10:38:38,876 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 34 transitions. [2020-04-18 10:38:38,876 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:38:38,876 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [543641335] [2020-04-18 10:38:38,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:38:38,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 10:38:38,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [543641335] [2020-04-18 10:38:38,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 10:38:38,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:38:38,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:38:38,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:38:38,878 INFO L87 Difference]: Start difference. First operand 212 states and 578 transitions. Second operand 3 states. [2020-04-18 10:38:38,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:38:38,900 INFO L93 Difference]: Finished difference Result 203 states and 548 transitions. [2020-04-18 10:38:38,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 10:38:38,901 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-18 10:38:38,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:38:38,903 INFO L225 Difference]: With dead ends: 203 [2020-04-18 10:38:38,903 INFO L226 Difference]: Without dead ends: 203 [2020-04-18 10:38:38,904 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:38:38,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-04-18 10:38:38,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-04-18 10:38:38,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-04-18 10:38:38,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 548 transitions. [2020-04-18 10:38:38,923 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 548 transitions. Word has length 10 [2020-04-18 10:38:38,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:38:38,923 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 548 transitions. [2020-04-18 10:38:38,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 10:38:38,924 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 548 transitions. [2020-04-18 10:38:38,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:38:38,925 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:38:38,928 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:38:38,928 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:38:38,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:38:38,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1106702486, now seen corresponding path program 1 times [2020-04-18 10:38:38,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:38:38,929 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1086361096] [2020-04-18 10:38:38,930 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:38:38,931 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 76 transitions. [2020-04-18 10:38:38,933 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-04-18 10:38:38,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:38:38,936 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:38:38,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:38:38,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1106702486, now seen corresponding path program 2 times [2020-04-18 10:38:38,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:38:38,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005872705] [2020-04-18 10:38:38,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:38:38,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:38:39,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:38:39,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005872705] [2020-04-18 10:38:39,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:38:39,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:38:39,046 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:38:39,047 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:38:39,073 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 45 transitions. [2020-04-18 10:38:39,073 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:38:39,088 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:38:39,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:38:39,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:38:39,088 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 4 states. [2020-04-18 10:38:39,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:38:39,108 INFO L93 Difference]: Finished difference Result 38 states and 76 transitions. [2020-04-18 10:38:39,108 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 76 transitions. [2020-04-18 10:38:39,109 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:38:39,110 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1086361096] [2020-04-18 10:38:39,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:38:39,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:38:39,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1086361096] [2020-04-18 10:38:39,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 10:38:39,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:38:39,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:38:39,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:38:39,113 INFO L87 Difference]: Start difference. First operand 203 states and 548 transitions. Second operand 4 states. [2020-04-18 10:38:39,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:38:39,132 INFO L93 Difference]: Finished difference Result 248 states and 641 transitions. [2020-04-18 10:38:39,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 10:38:39,133 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 10:38:39,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:38:39,135 INFO L225 Difference]: With dead ends: 248 [2020-04-18 10:38:39,135 INFO L226 Difference]: Without dead ends: 128 [2020-04-18 10:38:39,135 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:38:39,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-04-18 10:38:39,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-04-18 10:38:39,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-04-18 10:38:39,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 307 transitions. [2020-04-18 10:38:39,144 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 307 transitions. Word has length 11 [2020-04-18 10:38:39,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:38:39,144 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 307 transitions. [2020-04-18 10:38:39,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 10:38:39,146 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 307 transitions. [2020-04-18 10:38:39,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:38:39,151 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:38:39,151 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:38:39,152 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:38:39,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:38:39,152 INFO L82 PathProgramCache]: Analyzing trace with hash 550400496, now seen corresponding path program 1 times [2020-04-18 10:38:39,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:38:39,154 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [628007832] [2020-04-18 10:38:39,154 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:38:39,156 INFO L259 McrAutomatonBuilder]: Finished intersection with 56 states and 122 transitions. [2020-04-18 10:38:39,158 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-04-18 10:38:39,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:38:39,159 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:38:39,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:38:39,160 INFO L82 PathProgramCache]: Analyzing trace with hash 550400496, now seen corresponding path program 2 times [2020-04-18 10:38:39,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:38:39,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192052402] [2020-04-18 10:38:39,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:38:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:38:39,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:38:39,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192052402] [2020-04-18 10:38:39,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:38:39,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:38:39,205 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:38:39,206 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:38:39,210 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 50 transitions. [2020-04-18 10:38:39,210 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:38:39,220 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:38:39,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:38:39,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:38:39,221 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 4 states. [2020-04-18 10:38:39,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:38:39,240 INFO L93 Difference]: Finished difference Result 74 states and 149 transitions. [2020-04-18 10:38:39,240 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 149 transitions. [2020-04-18 10:38:39,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:38:39,241 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:38:39,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:38:39,242 INFO L82 PathProgramCache]: Analyzing trace with hash 550413516, now seen corresponding path program 3 times [2020-04-18 10:38:39,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:38:39,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474085458] [2020-04-18 10:38:39,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:38:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:38:39,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:38:39,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474085458] [2020-04-18 10:38:39,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:38:39,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:38:39,306 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:38:39,307 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:38:39,310 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 38 transitions. [2020-04-18 10:38:39,310 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:38:39,320 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:38:39,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:38:39,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:38:39,321 INFO L87 Difference]: Start difference. First operand 74 states and 149 transitions. Second operand 3 states. [2020-04-18 10:38:39,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:38:39,327 INFO L93 Difference]: Finished difference Result 74 states and 149 transitions. [2020-04-18 10:38:39,327 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 149 transitions. [2020-04-18 10:38:39,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:38:39,327 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:38:39,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:38:39,328 INFO L82 PathProgramCache]: Analyzing trace with hash -142344592, now seen corresponding path program 4 times [2020-04-18 10:38:39,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:38:39,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877181363] [2020-04-18 10:38:39,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:38:39,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:38:39,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:38:39,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877181363] [2020-04-18 10:38:39,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:38:39,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:38:39,388 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:38:39,389 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:38:39,394 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 36 transitions. [2020-04-18 10:38:39,395 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:38:39,416 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:38:39,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:38:39,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:38:39,417 INFO L87 Difference]: Start difference. First operand 74 states and 149 transitions. Second operand 4 states. [2020-04-18 10:38:39,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:38:39,434 INFO L93 Difference]: Finished difference Result 86 states and 160 transitions. [2020-04-18 10:38:39,434 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 160 transitions. [2020-04-18 10:38:39,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:38:39,435 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:38:39,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:38:39,435 INFO L82 PathProgramCache]: Analyzing trace with hash -188087018, now seen corresponding path program 5 times [2020-04-18 10:38:39,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:38:39,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925427495] [2020-04-18 10:38:39,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:38:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:38:39,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:38:39,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925427495] [2020-04-18 10:38:39,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:38:39,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:38:39,483 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:38:39,484 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:38:39,487 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 20 transitions. [2020-04-18 10:38:39,487 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:38:39,508 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:38:39,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:38:39,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-04-18 10:38:39,509 INFO L87 Difference]: Start difference. First operand 86 states and 160 transitions. Second operand 4 states. [2020-04-18 10:38:39,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:38:39,528 INFO L93 Difference]: Finished difference Result 86 states and 160 transitions. [2020-04-18 10:38:39,528 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 160 transitions. [2020-04-18 10:38:39,528 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:38:39,528 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [628007832] [2020-04-18 10:38:39,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:38:39,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:38:39,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [628007832] [2020-04-18 10:38:39,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 10:38:39,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:38:39,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 10:38:39,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-04-18 10:38:39,530 INFO L87 Difference]: Start difference. First operand 128 states and 307 transitions. Second operand 9 states. [2020-04-18 10:38:39,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:38:39,722 INFO L93 Difference]: Finished difference Result 200 states and 469 transitions. [2020-04-18 10:38:39,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 10:38:39,723 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-04-18 10:38:39,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:38:39,724 INFO L225 Difference]: With dead ends: 200 [2020-04-18 10:38:39,725 INFO L226 Difference]: Without dead ends: 86 [2020-04-18 10:38:39,725 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2020-04-18 10:38:39,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-04-18 10:38:39,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-04-18 10:38:39,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-04-18 10:38:39,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 186 transitions. [2020-04-18 10:38:39,729 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 186 transitions. Word has length 12 [2020-04-18 10:38:39,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:38:39,730 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 186 transitions. [2020-04-18 10:38:39,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 10:38:39,730 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 186 transitions. [2020-04-18 10:38:39,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:38:39,730 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:38:39,730 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:38:39,731 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:38:39,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:38:39,731 INFO L82 PathProgramCache]: Analyzing trace with hash -118658274, now seen corresponding path program 1 times [2020-04-18 10:38:39,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:38:39,732 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1855889465] [2020-04-18 10:38:39,732 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:38:39,734 INFO L259 McrAutomatonBuilder]: Finished intersection with 80 states and 189 transitions. [2020-04-18 10:38:39,735 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2020-04-18 10:38:39,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:38:39,736 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:38:39,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:38:39,736 INFO L82 PathProgramCache]: Analyzing trace with hash -117505074, now seen corresponding path program 2 times [2020-04-18 10:38:39,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:38:39,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979244206] [2020-04-18 10:38:39,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:38:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:38:39,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:38:39,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979244206] [2020-04-18 10:38:39,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:38:39,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:38:39,760 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:38:39,761 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:38:39,765 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 53 transitions. [2020-04-18 10:38:39,765 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:38:39,769 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:38:39,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:38:39,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:38:39,770 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 3 states. [2020-04-18 10:38:39,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:38:39,777 INFO L93 Difference]: Finished difference Result 102 states and 222 transitions. [2020-04-18 10:38:39,777 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 222 transitions. [2020-04-18 10:38:39,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:38:39,778 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:38:39,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:38:39,778 INFO L82 PathProgramCache]: Analyzing trace with hash -117453654, now seen corresponding path program 3 times [2020-04-18 10:38:39,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:38:39,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987849156] [2020-04-18 10:38:39,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:38:39,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:38:39,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:38:39,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987849156] [2020-04-18 10:38:39,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:38:39,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:38:39,809 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:38:39,810 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:38:39,814 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 51 transitions. [2020-04-18 10:38:39,814 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:38:39,824 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:38:39,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:38:39,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:38:39,825 INFO L87 Difference]: Start difference. First operand 102 states and 222 transitions. Second operand 4 states. [2020-04-18 10:38:39,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:38:39,846 INFO L93 Difference]: Finished difference Result 142 states and 278 transitions. [2020-04-18 10:38:39,846 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 278 transitions. [2020-04-18 10:38:39,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:38:39,847 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:38:39,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:38:39,848 INFO L82 PathProgramCache]: Analyzing trace with hash -117050034, now seen corresponding path program 4 times [2020-04-18 10:38:39,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:38:39,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616734955] [2020-04-18 10:38:39,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:38:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:38:39,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:38:39,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616734955] [2020-04-18 10:38:39,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:38:39,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:38:39,893 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:38:39,894 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:38:39,896 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 39 transitions. [2020-04-18 10:38:39,896 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:38:39,913 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:38:39,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:38:39,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:38:39,915 INFO L87 Difference]: Start difference. First operand 142 states and 278 transitions. Second operand 3 states. [2020-04-18 10:38:39,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:38:39,923 INFO L93 Difference]: Finished difference Result 147 states and 281 transitions. [2020-04-18 10:38:39,923 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 281 transitions. [2020-04-18 10:38:39,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:38:39,926 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:38:39,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:38:39,927 INFO L82 PathProgramCache]: Analyzing trace with hash -117714902, now seen corresponding path program 5 times [2020-04-18 10:38:39,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:38:39,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079778972] [2020-04-18 10:38:39,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:38:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:38:39,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:38:39,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079778972] [2020-04-18 10:38:39,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:38:39,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:38:39,979 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:38:39,980 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:38:39,985 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 50 transitions. [2020-04-18 10:38:39,985 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:38:40,006 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:38:40,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:38:40,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-04-18 10:38:40,008 INFO L87 Difference]: Start difference. First operand 147 states and 281 transitions. Second operand 4 states. [2020-04-18 10:38:40,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:38:40,047 INFO L93 Difference]: Finished difference Result 176 states and 316 transitions. [2020-04-18 10:38:40,047 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 316 transitions. [2020-04-18 10:38:40,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:38:40,048 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 10:38:40,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:38:40,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1535730108, now seen corresponding path program 6 times [2020-04-18 10:38:40,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:38:40,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888558453] [2020-04-18 10:38:40,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:38:40,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:38:40,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:38:40,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888558453] [2020-04-18 10:38:40,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:38:40,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:38:40,088 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:38:40,089 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:38:40,091 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 21 transitions. [2020-04-18 10:38:40,091 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:38:40,114 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:38:40,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:38:40,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-04-18 10:38:40,115 INFO L87 Difference]: Start difference. First operand 176 states and 316 transitions. Second operand 4 states. [2020-04-18 10:38:40,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:38:40,147 INFO L93 Difference]: Finished difference Result 194 states and 337 transitions. [2020-04-18 10:38:40,147 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 337 transitions. [2020-04-18 10:38:40,148 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:38:40,148 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1855889465] [2020-04-18 10:38:40,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:38:40,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 10:38:40,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1855889465] [2020-04-18 10:38:40,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 10:38:40,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:38:40,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 10:38:40,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-04-18 10:38:40,150 INFO L87 Difference]: Start difference. First operand 86 states and 186 transitions. Second operand 10 states. [2020-04-18 10:38:40,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:38:40,315 INFO L93 Difference]: Finished difference Result 74 states and 154 transitions. [2020-04-18 10:38:40,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 10:38:40,315 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-04-18 10:38:40,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:38:40,316 INFO L225 Difference]: With dead ends: 74 [2020-04-18 10:38:40,316 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 10:38:40,316 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2020-04-18 10:38:40,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 10:38:40,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 10:38:40,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 10:38:40,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 10:38:40,318 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-04-18 10:38:40,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:38:40,318 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 10:38:40,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 10:38:40,318 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 10:38:40,318 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:38:40,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 10:38:40 BasicIcfg [2020-04-18 10:38:40,323 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 10:38:40,326 INFO L168 Benchmark]: Toolchain (without parser) took 5724.76 ms. Allocated memory was 137.9 MB in the beginning and 291.0 MB in the end (delta: 153.1 MB). Free memory was 100.9 MB in the beginning and 230.7 MB in the end (delta: -129.8 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-04-18 10:38:40,326 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 10:38:40,327 INFO L168 Benchmark]: CACSL2BoogieTranslator took 755.68 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 98.9 MB in the beginning and 156.6 MB in the end (delta: -57.7 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-04-18 10:38:40,328 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.05 ms. Allocated memory is still 201.9 MB. Free memory was 156.6 MB in the beginning and 154.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 10:38:40,329 INFO L168 Benchmark]: Boogie Preprocessor took 33.36 ms. Allocated memory is still 201.9 MB. Free memory was 154.5 MB in the beginning and 153.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 10:38:40,329 INFO L168 Benchmark]: RCFGBuilder took 465.10 ms. Allocated memory is still 201.9 MB. Free memory was 153.2 MB in the beginning and 130.3 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-04-18 10:38:40,330 INFO L168 Benchmark]: TraceAbstraction took 4399.87 ms. Allocated memory was 201.9 MB in the beginning and 291.0 MB in the end (delta: 89.1 MB). Free memory was 130.3 MB in the beginning and 230.7 MB in the end (delta: -100.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 10:38:40,334 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 755.68 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 98.9 MB in the beginning and 156.6 MB in the end (delta: -57.7 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.05 ms. Allocated memory is still 201.9 MB. Free memory was 156.6 MB in the beginning and 154.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.36 ms. Allocated memory is still 201.9 MB. Free memory was 154.5 MB in the beginning and 153.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 465.10 ms. Allocated memory is still 201.9 MB. Free memory was 153.2 MB in the beginning and 130.3 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4399.87 ms. Allocated memory was 201.9 MB in the beginning and 291.0 MB in the end (delta: 89.1 MB). Free memory was 130.3 MB in the beginning and 230.7 MB in the end (delta: -100.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.0s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 667 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2700 CheckedPairsTotal, 59 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 117 SDtfs, 178 SDslu, 244 SDs, 0 SdLazy, 86 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 184 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...