/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/safe017_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 10:59:21,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 10:59:21,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 10:59:21,266 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 10:59:21,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 10:59:21,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 10:59:21,269 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 10:59:21,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 10:59:21,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 10:59:21,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 10:59:21,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 10:59:21,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 10:59:21,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 10:59:21,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 10:59:21,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 10:59:21,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 10:59:21,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 10:59:21,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 10:59:21,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 10:59:21,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 10:59:21,285 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 10:59:21,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 10:59:21,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 10:59:21,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 10:59:21,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 10:59:21,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 10:59:21,291 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 10:59:21,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 10:59:21,292 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 10:59:21,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 10:59:21,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 10:59:21,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 10:59:21,294 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 10:59:21,295 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 10:59:21,296 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 10:59:21,297 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 10:59:21,297 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 10:59:21,297 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 10:59:21,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 10:59:21,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 10:59:21,299 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 10:59:21,300 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 10:59:21,318 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 10:59:21,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 10:59:21,320 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 10:59:21,320 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 10:59:21,320 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 10:59:21,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 10:59:21,321 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 10:59:21,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 10:59:21,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 10:59:21,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 10:59:21,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 10:59:21,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 10:59:21,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 10:59:21,323 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 10:59:21,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 10:59:21,324 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 10:59:21,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 10:59:21,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 10:59:21,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 10:59:21,325 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 10:59:21,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 10:59:21,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 10:59:21,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 10:59:21,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 10:59:21,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 10:59:21,326 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 10:59:21,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 10:59:21,326 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 10:59:21,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 10:59:21,327 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 10:59:21,621 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 10:59:21,639 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 10:59:21,643 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 10:59:21,644 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 10:59:21,645 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 10:59:21,646 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i [2020-04-18 10:59:21,720 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fbd06f2d/3551fb0e741343ec93fcb31f487eaf7c/FLAG4a2346edd [2020-04-18 10:59:22,307 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 10:59:22,308 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i [2020-04-18 10:59:22,339 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fbd06f2d/3551fb0e741343ec93fcb31f487eaf7c/FLAG4a2346edd [2020-04-18 10:59:22,629 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fbd06f2d/3551fb0e741343ec93fcb31f487eaf7c [2020-04-18 10:59:22,643 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 10:59:22,661 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 10:59:22,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 10:59:22,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 10:59:22,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 10:59:22,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:59:22" (1/1) ... [2020-04-18 10:59:22,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3733a1ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:59:22, skipping insertion in model container [2020-04-18 10:59:22,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:59:22" (1/1) ... [2020-04-18 10:59:22,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 10:59:22,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 10:59:23,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:59:23,195 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 10:59:23,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:59:23,339 INFO L208 MainTranslator]: Completed translation [2020-04-18 10:59:23,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:59:23 WrapperNode [2020-04-18 10:59:23,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 10:59:23,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 10:59:23,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 10:59:23,340 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 10:59:23,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:59:23" (1/1) ... [2020-04-18 10:59:23,364 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:59:23" (1/1) ... [2020-04-18 10:59:23,388 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 10:59:23,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 10:59:23,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 10:59:23,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 10:59:23,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:59:23" (1/1) ... [2020-04-18 10:59:23,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:59:23" (1/1) ... [2020-04-18 10:59:23,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:59:23" (1/1) ... [2020-04-18 10:59:23,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:59:23" (1/1) ... [2020-04-18 10:59:23,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:59:23" (1/1) ... [2020-04-18 10:59:23,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:59:23" (1/1) ... [2020-04-18 10:59:23,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:59:23" (1/1) ... [2020-04-18 10:59:23,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 10:59:23,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 10:59:23,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 10:59:23,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 10:59:23,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:59:23" (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 10:59:23,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 10:59:23,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 10:59:23,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 10:59:23,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 10:59:23,488 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 10:59:23,489 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 10:59:23,489 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 10:59:23,490 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 10:59:23,490 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 10:59:23,491 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 10:59:23,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 10:59:23,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 10:59:23,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 10:59:23,493 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 10:59:23,869 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 10:59:23,869 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 10:59:23,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:59:23 BoogieIcfgContainer [2020-04-18 10:59:23,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 10:59:23,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 10:59:23,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 10:59:23,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 10:59:23,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 10:59:22" (1/3) ... [2020-04-18 10:59:23,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc3ab05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:59:23, skipping insertion in model container [2020-04-18 10:59:23,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:59:23" (2/3) ... [2020-04-18 10:59:23,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc3ab05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:59:23, skipping insertion in model container [2020-04-18 10:59:23,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:59:23" (3/3) ... [2020-04-18 10:59:23,882 INFO L109 eAbstractionObserver]: Analyzing ICFG safe017_tso.opt.i [2020-04-18 10:59:23,892 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 10:59:23,892 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 10:59:23,900 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 10:59:23,901 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 10:59:23,929 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:59:23,929 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:59:23,930 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:59:23,930 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:59:23,931 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:59:23,931 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:59:23,932 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:59:23,932 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:59:23,932 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:59:23,932 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:59:23,933 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:59:23,933 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:59:23,934 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:59:23,934 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:59:23,934 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:59:23,934 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:59:23,935 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:59:23,935 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:59:23,939 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:59:23,940 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:59:23,940 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:59:23,940 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:59:23,946 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:59:23,946 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:59:23,946 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:59:23,947 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:59:23,950 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:59:23,950 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:59:23,950 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:59:23,950 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:59:23,966 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 10:59:23,987 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 10:59:23,987 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 10:59:23,987 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 10:59:23,988 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 10:59:23,988 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 10:59:23,988 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 10:59:23,988 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 10:59:23,988 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 10:59:24,002 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 67 transitions, 149 flow [2020-04-18 10:59:24,004 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 67 transitions, 149 flow [2020-04-18 10:59:24,047 INFO L129 PetriNetUnfolder]: 2/64 cut-off events. [2020-04-18 10:59:24,047 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:59:24,052 INFO L80 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 64 events. 2/64 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. 0/61 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 10:59:24,055 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 67 transitions, 149 flow [2020-04-18 10:59:24,076 INFO L129 PetriNetUnfolder]: 2/64 cut-off events. [2020-04-18 10:59:24,076 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:59:24,077 INFO L80 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 64 events. 2/64 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. 0/61 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 10:59:24,079 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-04-18 10:59:24,080 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 10:59:25,703 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1818 [2020-04-18 10:59:25,704 INFO L214 etLargeBlockEncoding]: Total number of compositions: 52 [2020-04-18 10:59:25,707 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-04-18 10:59:25,728 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-04-18 10:59:25,730 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-04-18 10:59:25,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:59:25,738 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:59:25,739 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:59:25,739 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:59:25,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:59:25,745 INFO L82 PathProgramCache]: Analyzing trace with hash -540517404, now seen corresponding path program 1 times [2020-04-18 10:59:25,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:59:25,752 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [880720228] [2020-04-18 10:59:25,768 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:59:25,780 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:59:25,782 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 10:59:25,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:59:25,783 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:59:25,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:59:25,783 INFO L82 PathProgramCache]: Analyzing trace with hash -540517404, now seen corresponding path program 2 times [2020-04-18 10:59:25,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:59:25,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432627805] [2020-04-18 10:59:25,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:59:25,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:59:26,049 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 10:59:26,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432627805] [2020-04-18 10:59:26,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:59:26,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 10:59:26,054 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:59:26,056 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:59:26,064 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:59:26,065 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:59:26,072 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:59:26,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:59:26,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:59:26,080 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 10:59:26,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:59:26,085 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 10:59:26,085 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 10:59:26,086 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:59:26,086 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [880720228] [2020-04-18 10:59:26,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:59:26,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 10:59:26,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [880720228] [2020-04-18 10:59:26,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 10:59:26,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:59:26,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:59:26,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:59:26,095 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-04-18 10:59:26,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:59:26,142 INFO L93 Difference]: Finished difference Result 218 states and 604 transitions. [2020-04-18 10:59:26,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 10:59:26,146 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 10:59:26,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:59:26,172 INFO L225 Difference]: With dead ends: 218 [2020-04-18 10:59:26,172 INFO L226 Difference]: Without dead ends: 170 [2020-04-18 10:59:26,180 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 10:59:26,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-04-18 10:59:26,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-04-18 10:59:26,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-04-18 10:59:26,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 452 transitions. [2020-04-18 10:59:26,278 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 452 transitions. Word has length 8 [2020-04-18 10:59:26,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:59:26,279 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 452 transitions. [2020-04-18 10:59:26,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 10:59:26,279 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 452 transitions. [2020-04-18 10:59:26,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:59:26,281 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:59:26,282 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:59:26,282 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:59:26,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:59:26,282 INFO L82 PathProgramCache]: Analyzing trace with hash 423829006, now seen corresponding path program 1 times [2020-04-18 10:59:26,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:59:26,283 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [657980131] [2020-04-18 10:59:26,283 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:59:26,284 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 17 transitions. [2020-04-18 10:59:26,285 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-04-18 10:59:26,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:59:26,286 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:59:26,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:59:26,287 INFO L82 PathProgramCache]: Analyzing trace with hash 423829846, now seen corresponding path program 2 times [2020-04-18 10:59:26,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:59:26,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701130938] [2020-04-18 10:59:26,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:59:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:59:26,361 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 10:59:26,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701130938] [2020-04-18 10:59:26,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:59:26,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:59:26,363 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:59:26,364 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:59:26,366 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 10:59:26,366 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:59:26,372 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:59:26,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:59:26,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:59:26,373 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2020-04-18 10:59:26,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:59:26,377 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-04-18 10:59:26,377 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-04-18 10:59:26,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:59:26,378 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:59:26,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:59:26,378 INFO L82 PathProgramCache]: Analyzing trace with hash 423829006, now seen corresponding path program 3 times [2020-04-18 10:59:26,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:59:26,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271686767] [2020-04-18 10:59:26,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:59:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:59:26,476 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 10:59:26,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271686767] [2020-04-18 10:59:26,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:59:26,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 10:59:26,478 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:59:26,478 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:59:26,480 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-04-18 10:59:26,481 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:59:26,490 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:59:26,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:59:26,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:59:26,491 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2020-04-18 10:59:26,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:59:26,492 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-04-18 10:59:26,492 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-04-18 10:59:26,492 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:59:26,492 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [657980131] [2020-04-18 10:59:26,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:59:26,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 10:59:26,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [657980131] [2020-04-18 10:59:26,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 10:59:26,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:59:26,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:59:26,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:59:26,497 INFO L87 Difference]: Start difference. First operand 170 states and 452 transitions. Second operand 4 states. [2020-04-18 10:59:26,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:59:26,529 INFO L93 Difference]: Finished difference Result 166 states and 438 transitions. [2020-04-18 10:59:26,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 10:59:26,532 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 10:59:26,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:59:26,535 INFO L225 Difference]: With dead ends: 166 [2020-04-18 10:59:26,535 INFO L226 Difference]: Without dead ends: 166 [2020-04-18 10:59:26,537 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 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 10:59:26,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-04-18 10:59:26,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-04-18 10:59:26,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-04-18 10:59:26,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 438 transitions. [2020-04-18 10:59:26,563 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 438 transitions. Word has length 9 [2020-04-18 10:59:26,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:59:26,563 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 438 transitions. [2020-04-18 10:59:26,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 10:59:26,564 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 438 transitions. [2020-04-18 10:59:26,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:59:26,566 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:59:26,567 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:59:26,567 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:59:26,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:59:26,567 INFO L82 PathProgramCache]: Analyzing trace with hash -650605017, now seen corresponding path program 1 times [2020-04-18 10:59:26,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:59:26,568 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [169940257] [2020-04-18 10:59:26,568 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:59:26,569 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 44 transitions. [2020-04-18 10:59:26,570 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-04-18 10:59:26,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:59:26,575 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:59:26,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:59:26,575 INFO L82 PathProgramCache]: Analyzing trace with hash -650604177, now seen corresponding path program 2 times [2020-04-18 10:59:26,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:59:26,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293245578] [2020-04-18 10:59:26,577 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:59:26,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:59:26,639 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 10:59:26,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293245578] [2020-04-18 10:59:26,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:59:26,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:59:26,640 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:59:26,641 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:59:26,643 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 20 transitions. [2020-04-18 10:59:26,643 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:59:26,654 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:59:26,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:59:26,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:59:26,655 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2020-04-18 10:59:26,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:59:26,663 INFO L93 Difference]: Finished difference Result 28 states and 45 transitions. [2020-04-18 10:59:26,663 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 45 transitions. [2020-04-18 10:59:26,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:59:26,666 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:59:26,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:59:26,667 INFO L82 PathProgramCache]: Analyzing trace with hash -650605017, now seen corresponding path program 3 times [2020-04-18 10:59:26,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:59:26,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472349665] [2020-04-18 10:59:26,668 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:59:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:59:26,723 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 10:59:26,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472349665] [2020-04-18 10:59:26,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:59:26,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 10:59:26,725 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:59:26,725 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:59:26,727 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 37 transitions. [2020-04-18 10:59:26,727 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:59:26,758 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:59:26,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:59:26,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:59:26,759 INFO L87 Difference]: Start difference. First operand 28 states and 45 transitions. Second operand 3 states. [2020-04-18 10:59:26,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:59:26,760 INFO L93 Difference]: Finished difference Result 28 states and 45 transitions. [2020-04-18 10:59:26,760 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 45 transitions. [2020-04-18 10:59:26,761 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:59:26,761 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [169940257] [2020-04-18 10:59:26,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:59:26,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 10:59:26,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [169940257] [2020-04-18 10:59:26,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 10:59:26,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:59:26,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:59:26,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:59:26,766 INFO L87 Difference]: Start difference. First operand 166 states and 438 transitions. Second operand 4 states. [2020-04-18 10:59:26,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:59:26,789 INFO L93 Difference]: Finished difference Result 158 states and 412 transitions. [2020-04-18 10:59:26,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 10:59:26,791 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 10:59:26,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:59:26,793 INFO L225 Difference]: With dead ends: 158 [2020-04-18 10:59:26,793 INFO L226 Difference]: Without dead ends: 158 [2020-04-18 10:59:26,793 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 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 10:59:26,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-04-18 10:59:26,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-04-18 10:59:26,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-04-18 10:59:26,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 412 transitions. [2020-04-18 10:59:26,804 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 412 transitions. Word has length 10 [2020-04-18 10:59:26,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:59:26,805 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 412 transitions. [2020-04-18 10:59:26,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 10:59:26,805 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 412 transitions. [2020-04-18 10:59:26,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:59:26,806 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:59:26,806 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:59:26,806 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:59:26,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:59:26,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1305380691, now seen corresponding path program 1 times [2020-04-18 10:59:26,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:59:26,807 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [205169268] [2020-04-18 10:59:26,808 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:59:26,808 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 76 transitions. [2020-04-18 10:59:26,809 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-04-18 10:59:26,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:59:26,810 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:59:26,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:59:26,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1305381531, now seen corresponding path program 2 times [2020-04-18 10:59:26,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:59:26,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619980645] [2020-04-18 10:59:26,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:59:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:59:26,844 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 10:59:26,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619980645] [2020-04-18 10:59:26,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:59:26,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:59:26,846 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:59:26,846 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:59:26,848 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2020-04-18 10:59:26,848 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:59:26,852 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:59:26,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:59:26,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:59:26,853 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-04-18 10:59:26,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:59:26,859 INFO L93 Difference]: Finished difference Result 42 states and 80 transitions. [2020-04-18 10:59:26,859 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 80 transitions. [2020-04-18 10:59:26,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:59:26,859 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:59:26,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:59:26,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1305380691, now seen corresponding path program 3 times [2020-04-18 10:59:26,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:59:26,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804312034] [2020-04-18 10:59:26,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:59:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:59:26,918 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 10:59:26,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804312034] [2020-04-18 10:59:26,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:59:26,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:59:26,920 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:59:26,920 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:59:26,923 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 35 transitions. [2020-04-18 10:59:26,923 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:59:26,930 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:59:26,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:59:26,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:59:26,931 INFO L87 Difference]: Start difference. First operand 42 states and 80 transitions. Second operand 4 states. [2020-04-18 10:59:26,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:59:26,945 INFO L93 Difference]: Finished difference Result 48 states and 87 transitions. [2020-04-18 10:59:26,945 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 87 transitions. [2020-04-18 10:59:26,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:59:26,946 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:59:26,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:59:26,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1306080051, now seen corresponding path program 4 times [2020-04-18 10:59:26,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:59:26,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551077004] [2020-04-18 10:59:26,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:59:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:59:27,044 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 10:59:27,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551077004] [2020-04-18 10:59:27,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:59:27,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:59:27,045 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:59:27,046 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:59:27,049 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 45 transitions. [2020-04-18 10:59:27,049 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:59:27,069 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:59:27,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:59:27,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:59:27,071 INFO L87 Difference]: Start difference. First operand 48 states and 87 transitions. Second operand 4 states. [2020-04-18 10:59:27,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:59:27,083 INFO L93 Difference]: Finished difference Result 48 states and 87 transitions. [2020-04-18 10:59:27,084 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 87 transitions. [2020-04-18 10:59:27,084 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:59:27,084 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [205169268] [2020-04-18 10:59:27,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:59:27,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:59:27,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [205169268] [2020-04-18 10:59:27,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 10:59:27,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:59:27,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:59:27,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:59:27,086 INFO L87 Difference]: Start difference. First operand 158 states and 412 transitions. Second operand 6 states. [2020-04-18 10:59:27,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:59:27,243 INFO L93 Difference]: Finished difference Result 263 states and 617 transitions. [2020-04-18 10:59:27,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 10:59:27,244 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-04-18 10:59:27,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:59:27,245 INFO L225 Difference]: With dead ends: 263 [2020-04-18 10:59:27,245 INFO L226 Difference]: Without dead ends: 125 [2020-04-18 10:59:27,246 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-04-18 10:59:27,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-04-18 10:59:27,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-04-18 10:59:27,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-04-18 10:59:27,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 288 transitions. [2020-04-18 10:59:27,253 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 288 transitions. Word has length 11 [2020-04-18 10:59:27,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:59:27,253 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 288 transitions. [2020-04-18 10:59:27,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 10:59:27,253 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 288 transitions. [2020-04-18 10:59:27,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:59:27,254 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:59:27,254 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:59:27,254 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:59:27,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:59:27,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1819207960, now seen corresponding path program 1 times [2020-04-18 10:59:27,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:59:27,255 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1111045553] [2020-04-18 10:59:27,256 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:59:27,257 INFO L259 McrAutomatonBuilder]: Finished intersection with 54 states and 118 transitions. [2020-04-18 10:59:27,258 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-04-18 10:59:27,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:59:27,259 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:59:27,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:59:27,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1812121990, now seen corresponding path program 2 times [2020-04-18 10:59:27,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:59:27,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985713888] [2020-04-18 10:59:27,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:59:27,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:59:27,307 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 10:59:27,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985713888] [2020-04-18 10:59:27,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:59:27,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:59:27,310 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:59:27,311 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:59:27,313 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 29 transitions. [2020-04-18 10:59:27,314 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:59:27,317 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:59:27,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:59:27,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:59:27,318 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 3 states. [2020-04-18 10:59:27,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:59:27,326 INFO L93 Difference]: Finished difference Result 62 states and 130 transitions. [2020-04-18 10:59:27,327 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 130 transitions. [2020-04-18 10:59:27,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:59:27,327 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:59:27,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:59:27,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1812095320, now seen corresponding path program 3 times [2020-04-18 10:59:27,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:59:27,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498169294] [2020-04-18 10:59:27,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:59:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:59:27,383 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 10:59:27,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498169294] [2020-04-18 10:59:27,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:59:27,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:59:27,384 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:59:27,385 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:59:27,388 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 40 transitions. [2020-04-18 10:59:27,388 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:59:27,394 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:59:27,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:59:27,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:59:27,395 INFO L87 Difference]: Start difference. First operand 62 states and 130 transitions. Second operand 4 states. [2020-04-18 10:59:27,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:59:27,411 INFO L93 Difference]: Finished difference Result 74 states and 150 transitions. [2020-04-18 10:59:27,411 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 150 transitions. [2020-04-18 10:59:27,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:59:27,412 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:59:27,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:59:27,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1833789430, now seen corresponding path program 4 times [2020-04-18 10:59:27,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:59:27,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95524941] [2020-04-18 10:59:27,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:59:27,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:59:27,466 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 10:59:27,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95524941] [2020-04-18 10:59:27,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:59:27,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:59:27,467 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:59:27,468 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:59:27,472 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 55 transitions. [2020-04-18 10:59:27,472 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:59:27,490 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:59:27,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:59:27,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:59:27,492 INFO L87 Difference]: Start difference. First operand 74 states and 150 transitions. Second operand 4 states. [2020-04-18 10:59:27,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:59:27,510 INFO L93 Difference]: Finished difference Result 86 states and 166 transitions. [2020-04-18 10:59:27,510 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 166 transitions. [2020-04-18 10:59:27,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:59:27,511 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:59:27,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:59:27,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1819207960, now seen corresponding path program 5 times [2020-04-18 10:59:27,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:59:27,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323685746] [2020-04-18 10:59:27,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:59:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:59:27,597 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 10:59:27,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323685746] [2020-04-18 10:59:27,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:59:27,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:59:27,598 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:59:27,599 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:59:27,603 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 58 transitions. [2020-04-18 10:59:27,603 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:59:27,657 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 10:59:27,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:59:27,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 10:59:27,658 INFO L87 Difference]: Start difference. First operand 86 states and 166 transitions. Second operand 6 states. [2020-04-18 10:59:27,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:59:27,684 INFO L93 Difference]: Finished difference Result 86 states and 166 transitions. [2020-04-18 10:59:27,684 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 166 transitions. [2020-04-18 10:59:27,684 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:59:27,685 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1111045553] [2020-04-18 10:59:27,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:59:27,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 10:59:27,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1111045553] [2020-04-18 10:59:27,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 10:59:27,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:59:27,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 10:59:27,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-04-18 10:59:27,686 INFO L87 Difference]: Start difference. First operand 125 states and 288 transitions. Second operand 8 states. [2020-04-18 10:59:27,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:59:27,818 INFO L93 Difference]: Finished difference Result 121 states and 257 transitions. [2020-04-18 10:59:27,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-04-18 10:59:27,819 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-04-18 10:59:27,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:59:27,820 INFO L225 Difference]: With dead ends: 121 [2020-04-18 10:59:27,820 INFO L226 Difference]: Without dead ends: 93 [2020-04-18 10:59:27,820 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-04-18 10:59:27,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-04-18 10:59:27,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-04-18 10:59:27,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-04-18 10:59:27,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 192 transitions. [2020-04-18 10:59:27,825 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 192 transitions. Word has length 12 [2020-04-18 10:59:27,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:59:27,825 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 192 transitions. [2020-04-18 10:59:27,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 10:59:27,826 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 192 transitions. [2020-04-18 10:59:27,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:59:27,826 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:59:27,826 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:59:27,827 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:59:27,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:59:27,827 INFO L82 PathProgramCache]: Analyzing trace with hash 589619789, now seen corresponding path program 1 times [2020-04-18 10:59:27,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:59:27,828 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [660930964] [2020-04-18 10:59:27,828 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:59:27,829 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 89 transitions. [2020-04-18 10:59:27,830 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-04-18 10:59:27,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:59:27,830 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:59:27,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:59:27,831 INFO L82 PathProgramCache]: Analyzing trace with hash 954730171, now seen corresponding path program 2 times [2020-04-18 10:59:27,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:59:27,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256693139] [2020-04-18 10:59:27,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:59:27,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:59:27,859 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 10:59:27,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256693139] [2020-04-18 10:59:27,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:59:27,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:59:27,860 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:59:27,861 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:59:27,863 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 17 transitions. [2020-04-18 10:59:27,863 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:59:27,867 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:59:27,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:59:27,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:59:27,868 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2020-04-18 10:59:27,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:59:27,872 INFO L93 Difference]: Finished difference Result 52 states and 96 transitions. [2020-04-18 10:59:27,873 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 96 transitions. [2020-04-18 10:59:27,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:59:27,873 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:59:27,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:59:27,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1894446331, now seen corresponding path program 3 times [2020-04-18 10:59:27,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:59:27,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264829763] [2020-04-18 10:59:27,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:59:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:59:27,900 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 10:59:27,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264829763] [2020-04-18 10:59:27,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:59:27,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:59:27,902 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:59:27,903 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:59:27,905 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-04-18 10:59:27,905 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:59:27,910 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:59:27,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:59:27,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:59:27,925 INFO L87 Difference]: Start difference. First operand 52 states and 96 transitions. Second operand 3 states. [2020-04-18 10:59:27,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:59:27,930 INFO L93 Difference]: Finished difference Result 52 states and 96 transitions. [2020-04-18 10:59:27,930 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 96 transitions. [2020-04-18 10:59:27,930 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:59:27,930 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [660930964] [2020-04-18 10:59:27,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:59:27,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:59:27,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [660930964] [2020-04-18 10:59:27,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 10:59:27,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:59:27,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:59:27,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:59:27,932 INFO L87 Difference]: Start difference. First operand 93 states and 192 transitions. Second operand 4 states. [2020-04-18 10:59:27,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:59:27,943 INFO L93 Difference]: Finished difference Result 110 states and 218 transitions. [2020-04-18 10:59:27,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 10:59:27,943 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-18 10:59:27,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:59:27,944 INFO L225 Difference]: With dead ends: 110 [2020-04-18 10:59:27,944 INFO L226 Difference]: Without dead ends: 88 [2020-04-18 10:59:27,945 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:59:27,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-04-18 10:59:27,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-04-18 10:59:27,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-04-18 10:59:27,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 169 transitions. [2020-04-18 10:59:27,955 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 169 transitions. Word has length 13 [2020-04-18 10:59:27,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:59:27,956 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 169 transitions. [2020-04-18 10:59:27,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 10:59:27,956 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 169 transitions. [2020-04-18 10:59:27,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:59:27,957 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:59:27,957 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:59:27,957 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:59:27,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:59:27,957 INFO L82 PathProgramCache]: Analyzing trace with hash 205369494, now seen corresponding path program 1 times [2020-04-18 10:59:27,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:59:27,958 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1839286621] [2020-04-18 10:59:27,958 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:59:27,961 INFO L259 McrAutomatonBuilder]: Finished intersection with 106 states and 260 transitions. [2020-04-18 10:59:27,963 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states. [2020-04-18 10:59:27,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:59:27,964 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:59:27,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:59:27,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1987482116, now seen corresponding path program 2 times [2020-04-18 10:59:27,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:59:27,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494851013] [2020-04-18 10:59:27,965 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:59:27,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:59:27,993 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 10:59:27,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494851013] [2020-04-18 10:59:27,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:59:27,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:59:27,994 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:59:27,995 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:59:27,998 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-04-18 10:59:27,998 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:59:28,002 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:59:28,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:59:28,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:59:28,002 INFO L87 Difference]: Start difference. First operand 106 states. Second operand 3 states. [2020-04-18 10:59:28,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:59:28,010 INFO L93 Difference]: Finished difference Result 126 states and 296 transitions. [2020-04-18 10:59:28,010 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 296 transitions. [2020-04-18 10:59:28,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:59:28,011 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:59:28,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:59:28,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1961852246, now seen corresponding path program 3 times [2020-04-18 10:59:28,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:59:28,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728266240] [2020-04-18 10:59:28,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:59:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:59:28,046 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 10:59:28,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728266240] [2020-04-18 10:59:28,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:59:28,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:59:28,047 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:59:28,050 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:59:28,054 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 55 transitions. [2020-04-18 10:59:28,054 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:59:28,060 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:59:28,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:59:28,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:59:28,062 INFO L87 Difference]: Start difference. First operand 126 states and 296 transitions. Second operand 4 states. [2020-04-18 10:59:28,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:59:28,080 INFO L93 Difference]: Finished difference Result 156 states and 355 transitions. [2020-04-18 10:59:28,081 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 355 transitions. [2020-04-18 10:59:28,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:59:28,083 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:59:28,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:59:28,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1335055476, now seen corresponding path program 4 times [2020-04-18 10:59:28,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:59:28,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571497645] [2020-04-18 10:59:28,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:59:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:59:28,140 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 10:59:28,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571497645] [2020-04-18 10:59:28,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:59:28,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:59:28,141 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:59:28,142 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:59:28,147 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 89 transitions. [2020-04-18 10:59:28,147 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:59:28,168 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:59:28,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:59:28,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:59:28,169 INFO L87 Difference]: Start difference. First operand 156 states and 355 transitions. Second operand 4 states. [2020-04-18 10:59:28,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:59:28,195 INFO L93 Difference]: Finished difference Result 192 states and 415 transitions. [2020-04-18 10:59:28,195 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 415 transitions. [2020-04-18 10:59:28,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:59:28,196 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:59:28,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:59:28,197 INFO L82 PathProgramCache]: Analyzing trace with hash 207164694, now seen corresponding path program 5 times [2020-04-18 10:59:28,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:59:28,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518010841] [2020-04-18 10:59:28,197 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:59:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:59:28,253 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 10:59:28,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518010841] [2020-04-18 10:59:28,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:59:28,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:59:28,256 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:59:28,260 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:59:28,266 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 90 transitions. [2020-04-18 10:59:28,267 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:59:28,309 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 10:59:28,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:59:28,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 10:59:28,310 INFO L87 Difference]: Start difference. First operand 192 states and 415 transitions. Second operand 6 states. [2020-04-18 10:59:28,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:59:28,363 INFO L93 Difference]: Finished difference Result 198 states and 420 transitions. [2020-04-18 10:59:28,363 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 420 transitions. [2020-04-18 10:59:28,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:59:28,364 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 10:59:28,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:59:28,364 INFO L82 PathProgramCache]: Analyzing trace with hash 205369494, now seen corresponding path program 6 times [2020-04-18 10:59:28,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:59:28,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152474111] [2020-04-18 10:59:28,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:59:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:59:28,408 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 10:59:28,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152474111] [2020-04-18 10:59:28,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:59:28,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:59:28,409 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:59:28,411 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:59:28,416 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 64 transitions. [2020-04-18 10:59:28,416 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:59:28,427 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:59:28,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:59:28,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-04-18 10:59:28,428 INFO L87 Difference]: Start difference. First operand 198 states and 420 transitions. Second operand 3 states. [2020-04-18 10:59:28,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:59:28,436 INFO L93 Difference]: Finished difference Result 292 states and 573 transitions. [2020-04-18 10:59:28,436 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 573 transitions. [2020-04-18 10:59:28,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:59:28,437 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 10:59:28,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:59:28,438 INFO L82 PathProgramCache]: Analyzing trace with hash -610616562, now seen corresponding path program 7 times [2020-04-18 10:59:28,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:59:28,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872379769] [2020-04-18 10:59:28,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:59:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:59:28,462 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 10:59:28,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872379769] [2020-04-18 10:59:28,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:59:28,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:59:28,463 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:59:28,464 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:59:28,468 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 56 transitions. [2020-04-18 10:59:28,468 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:59:28,535 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 10:59:28,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:59:28,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-04-18 10:59:28,536 INFO L87 Difference]: Start difference. First operand 292 states and 573 transitions. Second operand 6 states. [2020-04-18 10:59:28,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:59:28,578 INFO L93 Difference]: Finished difference Result 340 states and 639 transitions. [2020-04-18 10:59:28,579 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 639 transitions. [2020-04-18 10:59:28,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:59:28,580 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 10:59:28,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:59:28,580 INFO L82 PathProgramCache]: Analyzing trace with hash -375565572, now seen corresponding path program 8 times [2020-04-18 10:59:28,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:59:28,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379623514] [2020-04-18 10:59:28,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:59:28,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:59:28,621 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 10:59:28,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379623514] [2020-04-18 10:59:28,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:59:28,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:59:28,622 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:59:28,623 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:59:28,627 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 82 transitions. [2020-04-18 10:59:28,627 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:59:28,685 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 10:59:28,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 10:59:28,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-04-18 10:59:28,686 INFO L87 Difference]: Start difference. First operand 340 states and 639 transitions. Second operand 8 states. [2020-04-18 10:59:28,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:59:28,748 INFO L93 Difference]: Finished difference Result 340 states and 639 transitions. [2020-04-18 10:59:28,748 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 639 transitions. [2020-04-18 10:59:28,749 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:59:28,750 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1839286621] [2020-04-18 10:59:28,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:59:28,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 10:59:28,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1839286621] [2020-04-18 10:59:28,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 10:59:28,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:59:28,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 10:59:28,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2020-04-18 10:59:28,751 INFO L87 Difference]: Start difference. First operand 86 states and 169 transitions. Second operand 14 states. [2020-04-18 10:59:29,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:59:29,274 INFO L93 Difference]: Finished difference Result 109 states and 199 transitions. [2020-04-18 10:59:29,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 10:59:29,275 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2020-04-18 10:59:29,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:59:29,275 INFO L225 Difference]: With dead ends: 109 [2020-04-18 10:59:29,276 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 10:59:29,277 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=315, Invalid=1325, Unknown=0, NotChecked=0, Total=1640 [2020-04-18 10:59:29,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 10:59:29,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 10:59:29,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 10:59:29,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 10:59:29,279 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-04-18 10:59:29,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:59:29,279 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 10:59:29,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 10:59:29,279 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 10:59:29,279 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:59:29,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 10:59:29 BasicIcfg [2020-04-18 10:59:29,283 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 10:59:29,286 INFO L168 Benchmark]: Toolchain (without parser) took 6640.86 ms. Allocated memory was 137.4 MB in the beginning and 287.8 MB in the end (delta: 150.5 MB). Free memory was 99.8 MB in the beginning and 224.6 MB in the end (delta: -124.8 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-04-18 10:59:29,287 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 10:59:29,287 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.29 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 97.9 MB in the beginning and 157.8 MB in the end (delta: -59.9 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-04-18 10:59:29,288 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.61 ms. Allocated memory is still 201.3 MB. Free memory was 157.8 MB in the beginning and 155.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 10:59:29,288 INFO L168 Benchmark]: Boogie Preprocessor took 26.32 ms. Allocated memory is still 201.3 MB. Free memory was 155.8 MB in the beginning and 154.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 10:59:29,289 INFO L168 Benchmark]: RCFGBuilder took 458.93 ms. Allocated memory is still 201.3 MB. Free memory was 154.4 MB in the beginning and 132.9 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-04-18 10:59:29,289 INFO L168 Benchmark]: TraceAbstraction took 5408.69 ms. Allocated memory was 201.3 MB in the beginning and 287.8 MB in the end (delta: 86.5 MB). Free memory was 132.3 MB in the beginning and 224.6 MB in the end (delta: -92.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 10:59:29,292 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 677.29 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 97.9 MB in the beginning and 157.8 MB in the end (delta: -59.9 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.61 ms. Allocated memory is still 201.3 MB. Free memory was 157.8 MB in the beginning and 155.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.32 ms. Allocated memory is still 201.3 MB. Free memory was 155.8 MB in the beginning and 154.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 458.93 ms. Allocated memory is still 201.3 MB. Free memory was 154.4 MB in the beginning and 132.9 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5408.69 ms. Allocated memory was 201.3 MB in the beginning and 287.8 MB in the end (delta: 86.5 MB). Free memory was 132.3 MB in the beginning and 224.6 MB in the end (delta: -92.3 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: 1.7s, 75 ProgramPointsBefore, 30 ProgramPointsAfterwards, 67 TransitionsBefore, 20 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 6 FixpointIterations, 12 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 621 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 16 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 1818 CheckedPairsTotal, 52 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, 66 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.2s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 118 SDtfs, 227 SDslu, 282 SDs, 0 SdLazy, 296 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 330 GetRequests, 255 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred 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, 7 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...