/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/safe005_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 10:42:29,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 10:42:29,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 10:42:29,266 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 10:42:29,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 10:42:29,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 10:42:29,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 10:42:29,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 10:42:29,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 10:42:29,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 10:42:29,289 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 10:42:29,291 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 10:42:29,291 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 10:42:29,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 10:42:29,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 10:42:29,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 10:42:29,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 10:42:29,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 10:42:29,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 10:42:29,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 10:42:29,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 10:42:29,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 10:42:29,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 10:42:29,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 10:42:29,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 10:42:29,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 10:42:29,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 10:42:29,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 10:42:29,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 10:42:29,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 10:42:29,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 10:42:29,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 10:42:29,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 10:42:29,329 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 10:42:29,330 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 10:42:29,331 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 10:42:29,331 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 10:42:29,331 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 10:42:29,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 10:42:29,332 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 10:42:29,333 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 10:42:29,334 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 10:42:29,356 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 10:42:29,356 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 10:42:29,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 10:42:29,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 10:42:29,358 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 10:42:29,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 10:42:29,359 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 10:42:29,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 10:42:29,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 10:42:29,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 10:42:29,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 10:42:29,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 10:42:29,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 10:42:29,360 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 10:42:29,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 10:42:29,360 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 10:42:29,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 10:42:29,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 10:42:29,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 10:42:29,361 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 10:42:29,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 10:42:29,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 10:42:29,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 10:42:29,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 10:42:29,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 10:42:29,362 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 10:42:29,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 10:42:29,363 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 10:42:29,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 10:42:29,363 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 10:42:29,684 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 10:42:29,698 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 10:42:29,702 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 10:42:29,703 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 10:42:29,704 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 10:42:29,705 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i [2020-04-18 10:42:29,774 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41d3bc7cb/a3d6c28e6c844427a3f3d2234fab4d58/FLAGc9ac0abaf [2020-04-18 10:42:30,302 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 10:42:30,303 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i [2020-04-18 10:42:30,331 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41d3bc7cb/a3d6c28e6c844427a3f3d2234fab4d58/FLAGc9ac0abaf [2020-04-18 10:42:30,579 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41d3bc7cb/a3d6c28e6c844427a3f3d2234fab4d58 [2020-04-18 10:42:30,587 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 10:42:30,609 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 10:42:30,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 10:42:30,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 10:42:30,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 10:42:30,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:42:30" (1/1) ... [2020-04-18 10:42:30,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20213f47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:42:30, skipping insertion in model container [2020-04-18 10:42:30,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:42:30" (1/1) ... [2020-04-18 10:42:30,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 10:42:30,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 10:42:31,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:42:31,215 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 10:42:31,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:42:31,340 INFO L208 MainTranslator]: Completed translation [2020-04-18 10:42:31,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:42:31 WrapperNode [2020-04-18 10:42:31,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 10:42:31,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 10:42:31,342 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 10:42:31,342 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 10:42:31,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:42:31" (1/1) ... [2020-04-18 10:42:31,374 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:42:31" (1/1) ... [2020-04-18 10:42:31,395 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 10:42:31,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 10:42:31,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 10:42:31,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 10:42:31,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:42:31" (1/1) ... [2020-04-18 10:42:31,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:42:31" (1/1) ... [2020-04-18 10:42:31,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:42:31" (1/1) ... [2020-04-18 10:42:31,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:42:31" (1/1) ... [2020-04-18 10:42:31,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:42:31" (1/1) ... [2020-04-18 10:42:31,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:42:31" (1/1) ... [2020-04-18 10:42:31,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:42:31" (1/1) ... [2020-04-18 10:42:31,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 10:42:31,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 10:42:31,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 10:42:31,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 10:42:31,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:42:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 10:42:31,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 10:42:31,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 10:42:31,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 10:42:31,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 10:42:31,486 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 10:42:31,486 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 10:42:31,486 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 10:42:31,486 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 10:42:31,487 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 10:42:31,487 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 10:42:31,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 10:42:31,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 10:42:31,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 10:42:31,489 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 10:42:31,865 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 10:42:31,865 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 10:42:31,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:42:31 BoogieIcfgContainer [2020-04-18 10:42:31,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 10:42:31,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 10:42:31,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 10:42:31,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 10:42:31,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 10:42:30" (1/3) ... [2020-04-18 10:42:31,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20c65f38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:42:31, skipping insertion in model container [2020-04-18 10:42:31,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:42:31" (2/3) ... [2020-04-18 10:42:31,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20c65f38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:42:31, skipping insertion in model container [2020-04-18 10:42:31,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:42:31" (3/3) ... [2020-04-18 10:42:31,879 INFO L109 eAbstractionObserver]: Analyzing ICFG safe005_tso.opt.i [2020-04-18 10:42:31,889 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 10:42:31,889 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 10:42:31,896 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 10:42:31,897 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 10:42:31,921 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:42:31,922 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:42:31,922 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:42:31,923 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:42:31,923 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:42:31,923 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:42:31,924 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:42:31,924 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:42:31,924 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:42:31,925 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:42:31,925 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:42:31,925 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:42:31,926 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:42:31,926 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:42:31,926 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:42:31,926 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:42:31,927 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:42:31,927 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:42:31,931 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:42:31,932 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:42:31,932 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:42:31,932 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:42:31,938 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:42:31,938 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:42:31,939 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:42:31,939 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:42:31,949 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:42:31,949 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:42:31,949 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:42:31,950 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:42:31,965 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 10:42:31,980 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 10:42:31,981 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 10:42:31,981 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 10:42:31,981 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 10:42:31,981 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 10:42:31,981 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 10:42:31,982 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 10:42:31,982 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 10:42:31,998 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 10:42:32,000 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 10:42:32,047 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 10:42:32,047 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:42:32,052 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 10:42:32,055 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 10:42:32,078 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 10:42:32,078 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:42:32,079 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 10:42:32,081 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 10:42:32,083 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 10:42:34,004 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-04-18 10:42:34,005 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-18 10:42:34,010 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 10:42:34,040 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 10:42:34,043 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 10:42:34,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:42:34,053 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:42:34,054 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:42:34,055 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:42:34,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:34,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-04-18 10:42:34,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:42:34,071 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [897237546] [2020-04-18 10:42:34,094 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:34,110 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:42:34,111 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 10:42:34,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:42:34,112 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:42:34,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:34,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 2 times [2020-04-18 10:42:34,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:42:34,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511737885] [2020-04-18 10:42:34,119 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:42:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:42:34,326 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 10:42:34,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511737885] [2020-04-18 10:42:34,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:42:34,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 10:42:34,330 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:42:34,331 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:34,334 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:42:34,334 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:42:34,342 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:42:34,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:42:34,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:42:34,348 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 10:42:34,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:34,352 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 10:42:34,352 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 10:42:34,353 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:42:34,353 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [897237546] [2020-04-18 10:42:34,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:42:34,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 10:42:34,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [897237546] [2020-04-18 10:42:34,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 10:42:34,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:42:34,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:42:34,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:42:34,361 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 10:42:34,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:34,407 INFO L93 Difference]: Finished difference Result 266 states and 752 transitions. [2020-04-18 10:42:34,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 10:42:34,410 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 10:42:34,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:42:34,434 INFO L225 Difference]: With dead ends: 266 [2020-04-18 10:42:34,434 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 10:42:34,443 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 10:42:34,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 10:42:34,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-18 10:42:34,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-18 10:42:34,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-04-18 10:42:34,502 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 8 [2020-04-18 10:42:34,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:42:34,503 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-04-18 10:42:34,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 10:42:34,503 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-04-18 10:42:34,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:42:34,505 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:42:34,505 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:42:34,505 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:42:34,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:34,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1603389483, now seen corresponding path program 1 times [2020-04-18 10:42:34,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:42:34,506 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [106998590] [2020-04-18 10:42:34,507 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:34,508 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-04-18 10:42:34,508 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-04-18 10:42:34,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:42:34,509 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:42:34,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:34,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1603434093, now seen corresponding path program 2 times [2020-04-18 10:42:34,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:42:34,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228778620] [2020-04-18 10:42:34,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:42:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:42:34,590 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 10:42:34,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228778620] [2020-04-18 10:42:34,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:42:34,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:42:34,591 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:42:34,592 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:34,594 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 10:42:34,594 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:42:34,601 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:42:34,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:42:34,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:42:34,602 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2020-04-18 10:42:34,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:34,611 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-04-18 10:42:34,611 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-04-18 10:42:34,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:42:34,612 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:42:34,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:34,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1603389483, now seen corresponding path program 3 times [2020-04-18 10:42:34,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:42:34,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058413618] [2020-04-18 10:42:34,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:42:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:42:34,672 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 10:42:34,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058413618] [2020-04-18 10:42:34,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:42:34,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:42:34,673 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:42:34,674 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:34,676 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-04-18 10:42:34,676 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:42:34,689 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:42:34,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:42:34,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:42:34,690 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 4 states. [2020-04-18 10:42:34,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:34,727 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-04-18 10:42:34,727 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-04-18 10:42:34,728 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:42:34,728 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [106998590] [2020-04-18 10:42:34,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:42:34,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:42:34,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [106998590] [2020-04-18 10:42:34,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 10:42:34,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:42:34,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:42:34,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:42:34,732 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 5 states. [2020-04-18 10:42:34,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:34,780 INFO L93 Difference]: Finished difference Result 254 states and 666 transitions. [2020-04-18 10:42:34,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 10:42:34,781 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-18 10:42:34,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:42:34,783 INFO L225 Difference]: With dead ends: 254 [2020-04-18 10:42:34,783 INFO L226 Difference]: Without dead ends: 190 [2020-04-18 10:42:34,785 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:42:34,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-04-18 10:42:34,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-04-18 10:42:34,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-04-18 10:42:34,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 502 transitions. [2020-04-18 10:42:34,803 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 502 transitions. Word has length 10 [2020-04-18 10:42:34,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:42:34,803 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 502 transitions. [2020-04-18 10:42:34,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 10:42:34,804 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 502 transitions. [2020-04-18 10:42:34,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:42:34,805 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:42:34,805 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:42:34,805 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:42:34,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:34,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1533986257, now seen corresponding path program 1 times [2020-04-18 10:42:34,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:42:34,806 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [947590044] [2020-04-18 10:42:34,807 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:34,808 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 47 transitions. [2020-04-18 10:42:34,808 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 10:42:34,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:42:34,809 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:42:34,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:34,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1533941647, now seen corresponding path program 2 times [2020-04-18 10:42:34,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:42:34,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817271264] [2020-04-18 10:42:34,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:42:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:42:34,876 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 10:42:34,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817271264] [2020-04-18 10:42:34,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:42:34,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:42:34,877 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:42:34,878 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:34,880 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 21 transitions. [2020-04-18 10:42:34,880 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:42:34,883 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:42:34,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:42:34,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:42:34,884 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-04-18 10:42:34,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:34,888 INFO L93 Difference]: Finished difference Result 30 states and 48 transitions. [2020-04-18 10:42:34,888 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 48 transitions. [2020-04-18 10:42:34,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:42:34,889 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:42:34,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:34,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1533986257, now seen corresponding path program 3 times [2020-04-18 10:42:34,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:42:34,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772920558] [2020-04-18 10:42:34,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:42:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:42:34,959 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 10:42:34,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772920558] [2020-04-18 10:42:34,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:42:34,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:42:34,960 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:42:34,961 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:34,964 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-04-18 10:42:34,964 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:42:34,984 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:42:34,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:42:34,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:42:34,985 INFO L87 Difference]: Start difference. First operand 30 states and 48 transitions. Second operand 4 states. [2020-04-18 10:42:35,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:35,019 INFO L93 Difference]: Finished difference Result 33 states and 50 transitions. [2020-04-18 10:42:35,019 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 50 transitions. [2020-04-18 10:42:35,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:42:35,019 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:42:35,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:35,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1834533405, now seen corresponding path program 4 times [2020-04-18 10:42:35,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:42:35,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069170608] [2020-04-18 10:42:35,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:42:35,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:42:35,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:42:35,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069170608] [2020-04-18 10:42:35,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:42:35,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:42:35,109 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:42:35,110 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:35,113 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 15 transitions. [2020-04-18 10:42:35,113 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:42:35,131 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:42:35,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:42:35,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:42:35,131 INFO L87 Difference]: Start difference. First operand 33 states and 50 transitions. Second operand 4 states. [2020-04-18 10:42:35,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:35,149 INFO L93 Difference]: Finished difference Result 33 states and 50 transitions. [2020-04-18 10:42:35,150 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 50 transitions. [2020-04-18 10:42:35,150 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:42:35,150 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [947590044] [2020-04-18 10:42:35,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:42:35,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 10:42:35,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [947590044] [2020-04-18 10:42:35,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 10:42:35,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:42:35,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:42:35,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:42:35,153 INFO L87 Difference]: Start difference. First operand 190 states and 502 transitions. Second operand 7 states. [2020-04-18 10:42:35,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:35,223 INFO L93 Difference]: Finished difference Result 262 states and 670 transitions. [2020-04-18 10:42:35,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 10:42:35,224 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-04-18 10:42:35,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:42:35,227 INFO L225 Difference]: With dead ends: 262 [2020-04-18 10:42:35,227 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 10:42:35,227 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-04-18 10:42:35,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 10:42:35,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 178. [2020-04-18 10:42:35,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-04-18 10:42:35,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 452 transitions. [2020-04-18 10:42:35,241 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 452 transitions. Word has length 11 [2020-04-18 10:42:35,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:42:35,242 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 452 transitions. [2020-04-18 10:42:35,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 10:42:35,242 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 452 transitions. [2020-04-18 10:42:35,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:42:35,244 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:42:35,244 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:42:35,244 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:42:35,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:35,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1026948662, now seen corresponding path program 1 times [2020-04-18 10:42:35,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:42:35,245 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [532633578] [2020-04-18 10:42:35,245 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:35,246 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 68 transitions. [2020-04-18 10:42:35,247 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-04-18 10:42:35,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:42:35,248 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:42:35,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:35,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1026904052, now seen corresponding path program 2 times [2020-04-18 10:42:35,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:42:35,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573382687] [2020-04-18 10:42:35,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:42:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:42:35,274 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 10:42:35,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573382687] [2020-04-18 10:42:35,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:42:35,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:42:35,276 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:42:35,277 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:35,279 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-04-18 10:42:35,279 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:42:35,282 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:42:35,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:42:35,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:42:35,283 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-04-18 10:42:35,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:35,286 INFO L93 Difference]: Finished difference Result 40 states and 70 transitions. [2020-04-18 10:42:35,286 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 70 transitions. [2020-04-18 10:42:35,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:42:35,287 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:42:35,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:35,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1026948662, now seen corresponding path program 3 times [2020-04-18 10:42:35,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:42:35,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287073534] [2020-04-18 10:42:35,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:42:35,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:42:35,310 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 10:42:35,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287073534] [2020-04-18 10:42:35,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:42:35,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:42:35,311 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:42:35,312 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:35,315 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-04-18 10:42:35,315 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:42:35,374 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 10:42:35,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:42:35,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:42:35,375 INFO L87 Difference]: Start difference. First operand 40 states and 70 transitions. Second operand 4 states. [2020-04-18 10:42:35,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:35,399 INFO L93 Difference]: Finished difference Result 44 states and 72 transitions. [2020-04-18 10:42:35,399 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 72 transitions. [2020-04-18 10:42:35,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:42:35,400 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:42:35,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:35,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1026335642, now seen corresponding path program 4 times [2020-04-18 10:42:35,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:42:35,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137607791] [2020-04-18 10:42:35,401 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:42:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:42:35,450 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 10:42:35,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137607791] [2020-04-18 10:42:35,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:42:35,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:42:35,451 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:42:35,454 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:35,458 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 34 transitions. [2020-04-18 10:42:35,458 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:42:35,480 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 10:42:35,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:42:35,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:42:35,480 INFO L87 Difference]: Start difference. First operand 44 states and 72 transitions. Second operand 4 states. [2020-04-18 10:42:35,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:35,503 INFO L93 Difference]: Finished difference Result 47 states and 74 transitions. [2020-04-18 10:42:35,504 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 74 transitions. [2020-04-18 10:42:35,504 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:42:35,504 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [532633578] [2020-04-18 10:42:35,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:42:35,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 10:42:35,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [532633578] [2020-04-18 10:42:35,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 10:42:35,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:42:35,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:42:35,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:42:35,507 INFO L87 Difference]: Start difference. First operand 178 states and 452 transitions. Second operand 7 states. [2020-04-18 10:42:35,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:35,575 INFO L93 Difference]: Finished difference Result 198 states and 492 transitions. [2020-04-18 10:42:35,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 10:42:35,575 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-04-18 10:42:35,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:42:35,576 INFO L225 Difference]: With dead ends: 198 [2020-04-18 10:42:35,576 INFO L226 Difference]: Without dead ends: 72 [2020-04-18 10:42:35,577 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-04-18 10:42:35,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-04-18 10:42:35,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-04-18 10:42:35,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-04-18 10:42:35,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 154 transitions. [2020-04-18 10:42:35,590 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 154 transitions. Word has length 12 [2020-04-18 10:42:35,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:42:35,590 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 154 transitions. [2020-04-18 10:42:35,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 10:42:35,590 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 154 transitions. [2020-04-18 10:42:35,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:42:35,594 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:42:35,594 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:42:35,594 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:42:35,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:35,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1770638686, now seen corresponding path program 1 times [2020-04-18 10:42:35,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:42:35,595 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1768139555] [2020-04-18 10:42:35,596 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:35,601 INFO L259 McrAutomatonBuilder]: Finished intersection with 72 states and 169 transitions. [2020-04-18 10:42:35,601 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-04-18 10:42:35,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:42:35,604 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:42:35,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:35,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1769254876, now seen corresponding path program 2 times [2020-04-18 10:42:35,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:42:35,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950059543] [2020-04-18 10:42:35,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:42:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:42:35,662 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 10:42:35,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950059543] [2020-04-18 10:42:35,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:42:35,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:42:35,663 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:42:35,664 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:35,669 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 47 transitions. [2020-04-18 10:42:35,669 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:42:35,672 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:42:35,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:42:35,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:42:35,673 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 3 states. [2020-04-18 10:42:35,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:35,676 INFO L93 Difference]: Finished difference Result 78 states and 176 transitions. [2020-04-18 10:42:35,676 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 176 transitions. [2020-04-18 10:42:35,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:42:35,677 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:42:35,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:35,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1770654496, now seen corresponding path program 3 times [2020-04-18 10:42:35,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:42:35,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362683501] [2020-04-18 10:42:35,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:42:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:42:35,729 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 10:42:35,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362683501] [2020-04-18 10:42:35,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:42:35,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:42:35,730 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:42:35,731 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:35,739 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 77 transitions. [2020-04-18 10:42:35,739 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:42:35,811 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 10:42:35,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:42:35,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:42:35,812 INFO L87 Difference]: Start difference. First operand 78 states and 176 transitions. Second operand 6 states. [2020-04-18 10:42:35,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:35,882 INFO L93 Difference]: Finished difference Result 104 states and 208 transitions. [2020-04-18 10:42:35,883 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 208 transitions. [2020-04-18 10:42:35,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:42:35,883 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:42:35,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:35,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1770637276, now seen corresponding path program 4 times [2020-04-18 10:42:35,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:42:35,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115349678] [2020-04-18 10:42:35,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:42:35,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:42:35,916 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 10:42:35,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115349678] [2020-04-18 10:42:35,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:42:35,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:42:35,917 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:42:35,919 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:35,923 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 65 transitions. [2020-04-18 10:42:35,924 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:42:35,963 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 10:42:35,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:42:35,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-04-18 10:42:35,966 INFO L87 Difference]: Start difference. First operand 104 states and 208 transitions. Second operand 4 states. [2020-04-18 10:42:35,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:35,992 INFO L93 Difference]: Finished difference Result 109 states and 210 transitions. [2020-04-18 10:42:35,992 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 210 transitions. [2020-04-18 10:42:35,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:42:35,993 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:42:35,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:35,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1770638686, now seen corresponding path program 5 times [2020-04-18 10:42:35,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:42:35,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174879074] [2020-04-18 10:42:35,994 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:42:36,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:42:36,057 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 10:42:36,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174879074] [2020-04-18 10:42:36,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:42:36,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:42:36,058 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:42:36,059 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:36,066 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 53 transitions. [2020-04-18 10:42:36,066 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:42:36,087 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:42:36,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:42:36,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-04-18 10:42:36,088 INFO L87 Difference]: Start difference. First operand 109 states and 210 transitions. Second operand 4 states. [2020-04-18 10:42:36,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:36,104 INFO L93 Difference]: Finished difference Result 109 states and 210 transitions. [2020-04-18 10:42:36,104 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 210 transitions. [2020-04-18 10:42:36,105 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:42:36,105 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1768139555] [2020-04-18 10:42:36,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:42:36,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:42:36,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1768139555] [2020-04-18 10:42:36,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 10:42:36,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:42:36,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 10:42:36,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-04-18 10:42:36,108 INFO L87 Difference]: Start difference. First operand 72 states and 154 transitions. Second operand 11 states. [2020-04-18 10:42:36,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:36,413 INFO L93 Difference]: Finished difference Result 85 states and 167 transitions. [2020-04-18 10:42:36,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 10:42:36,414 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-04-18 10:42:36,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:42:36,415 INFO L225 Difference]: With dead ends: 85 [2020-04-18 10:42:36,415 INFO L226 Difference]: Without dead ends: 61 [2020-04-18 10:42:36,416 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2020-04-18 10:42:36,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-04-18 10:42:36,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-04-18 10:42:36,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-04-18 10:42:36,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 118 transitions. [2020-04-18 10:42:36,424 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 118 transitions. Word has length 13 [2020-04-18 10:42:36,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:42:36,425 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 118 transitions. [2020-04-18 10:42:36,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 10:42:36,425 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 118 transitions. [2020-04-18 10:42:36,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:42:36,426 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:42:36,426 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:42:36,426 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:42:36,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:36,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1873051802, now seen corresponding path program 1 times [2020-04-18 10:42:36,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:42:36,428 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1510710242] [2020-04-18 10:42:36,428 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:36,432 INFO L259 McrAutomatonBuilder]: Finished intersection with 94 states and 230 transitions. [2020-04-18 10:42:36,433 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2020-04-18 10:42:36,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:42:36,434 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:42:36,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:36,434 INFO L82 PathProgramCache]: Analyzing trace with hash 971526634, now seen corresponding path program 2 times [2020-04-18 10:42:36,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:42:36,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819578626] [2020-04-18 10:42:36,435 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:42:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:42:36,472 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 10:42:36,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819578626] [2020-04-18 10:42:36,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:42:36,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:42:36,473 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:42:36,474 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:36,479 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 56 transitions. [2020-04-18 10:42:36,479 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:42:36,483 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:42:36,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:42:36,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:42:36,483 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 3 states. [2020-04-18 10:42:36,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:36,490 INFO L93 Difference]: Finished difference Result 102 states and 240 transitions. [2020-04-18 10:42:36,490 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 240 transitions. [2020-04-18 10:42:36,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:42:36,491 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:42:36,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:36,492 INFO L82 PathProgramCache]: Analyzing trace with hash 970127014, now seen corresponding path program 3 times [2020-04-18 10:42:36,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:42:36,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244071124] [2020-04-18 10:42:36,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:42:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:42:36,522 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 10:42:36,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244071124] [2020-04-18 10:42:36,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:42:36,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:42:36,523 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:42:36,524 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:36,530 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 86 transitions. [2020-04-18 10:42:36,530 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:42:36,596 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 10:42:36,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:42:36,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:42:36,597 INFO L87 Difference]: Start difference. First operand 102 states and 240 transitions. Second operand 6 states. [2020-04-18 10:42:36,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:36,635 INFO L93 Difference]: Finished difference Result 148 states and 314 transitions. [2020-04-18 10:42:36,635 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 314 transitions. [2020-04-18 10:42:36,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:42:36,635 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:42:36,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:36,636 INFO L82 PathProgramCache]: Analyzing trace with hash 970144234, now seen corresponding path program 4 times [2020-04-18 10:42:36,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:42:36,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851700869] [2020-04-18 10:42:36,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:42:36,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:42:36,660 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 10:42:36,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851700869] [2020-04-18 10:42:36,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:42:36,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:42:36,661 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:42:36,664 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:36,672 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 80 transitions. [2020-04-18 10:42:36,672 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:42:36,707 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 10:42:36,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:42:36,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-04-18 10:42:36,708 INFO L87 Difference]: Start difference. First operand 148 states and 314 transitions. Second operand 4 states. [2020-04-18 10:42:36,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:36,731 INFO L93 Difference]: Finished difference Result 158 states and 323 transitions. [2020-04-18 10:42:36,731 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 323 transitions. [2020-04-18 10:42:36,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:42:36,732 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:42:36,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:36,732 INFO L82 PathProgramCache]: Analyzing trace with hash 970142824, now seen corresponding path program 5 times [2020-04-18 10:42:36,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:42:36,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512022420] [2020-04-18 10:42:36,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:42:36,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:42:36,770 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 10:42:36,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512022420] [2020-04-18 10:42:36,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:42:36,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:42:36,772 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:42:36,773 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:36,777 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 62 transitions. [2020-04-18 10:42:36,777 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:42:36,797 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:42:36,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:42:36,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-04-18 10:42:36,798 INFO L87 Difference]: Start difference. First operand 158 states and 323 transitions. Second operand 4 states. [2020-04-18 10:42:36,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:36,816 INFO L93 Difference]: Finished difference Result 181 states and 352 transitions. [2020-04-18 10:42:36,817 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 352 transitions. [2020-04-18 10:42:36,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:42:36,818 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 10:42:36,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:36,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1873051802, now seen corresponding path program 6 times [2020-04-18 10:42:36,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:42:36,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359969429] [2020-04-18 10:42:36,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:42:36,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:42:36,860 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 10:42:36,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359969429] [2020-04-18 10:42:36,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:42:36,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:42:36,862 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:42:36,863 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:36,868 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 55 transitions. [2020-04-18 10:42:36,869 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:42:36,928 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:42:36,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:42:36,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-04-18 10:42:36,928 INFO L87 Difference]: Start difference. First operand 181 states and 352 transitions. Second operand 6 states. [2020-04-18 10:42:36,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:36,948 INFO L93 Difference]: Finished difference Result 181 states and 352 transitions. [2020-04-18 10:42:36,949 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 352 transitions. [2020-04-18 10:42:36,949 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:42:36,950 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1510710242] [2020-04-18 10:42:36,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:42:36,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 10:42:36,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1510710242] [2020-04-18 10:42:36,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 10:42:36,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:42:36,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 10:42:36,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-04-18 10:42:36,951 INFO L87 Difference]: Start difference. First operand 61 states and 118 transitions. Second operand 13 states. [2020-04-18 10:42:37,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:37,259 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-04-18 10:42:37,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 10:42:37,260 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 14 [2020-04-18 10:42:37,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:42:37,260 INFO L225 Difference]: With dead ends: 62 [2020-04-18 10:42:37,261 INFO L226 Difference]: Without dead ends: 47 [2020-04-18 10:42:37,261 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2020-04-18 10:42:37,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-04-18 10:42:37,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-04-18 10:42:37,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-04-18 10:42:37,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2020-04-18 10:42:37,264 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 14 [2020-04-18 10:42:37,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:42:37,264 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2020-04-18 10:42:37,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 10:42:37,265 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-04-18 10:42:37,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:42:37,265 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:42:37,266 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:42:37,266 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:42:37,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:37,266 INFO L82 PathProgramCache]: Analyzing trace with hash 877737129, now seen corresponding path program 1 times [2020-04-18 10:42:37,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:42:37,267 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [830806573] [2020-04-18 10:42:37,267 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:37,269 INFO L259 McrAutomatonBuilder]: Finished intersection with 118 states and 300 transitions. [2020-04-18 10:42:37,270 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states. [2020-04-18 10:42:37,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:42:37,271 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:42:37,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:37,272 INFO L82 PathProgramCache]: Analyzing trace with hash 52554789, now seen corresponding path program 2 times [2020-04-18 10:42:37,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:42:37,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28983158] [2020-04-18 10:42:37,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:42:37,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:42:37,299 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 10:42:37,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28983158] [2020-04-18 10:42:37,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:42:37,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:42:37,300 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:42:37,301 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:37,304 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 57 transitions. [2020-04-18 10:42:37,304 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:42:37,309 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:42:37,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:42:37,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:42:37,309 INFO L87 Difference]: Start difference. First operand 118 states. Second operand 3 states. [2020-04-18 10:42:37,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:37,312 INFO L93 Difference]: Finished difference Result 134 states and 328 transitions. [2020-04-18 10:42:37,312 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 328 transitions. [2020-04-18 10:42:37,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:42:37,313 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:42:37,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:37,313 INFO L82 PathProgramCache]: Analyzing trace with hash 9166569, now seen corresponding path program 3 times [2020-04-18 10:42:37,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:42:37,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604532613] [2020-04-18 10:42:37,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:42:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:42:37,339 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 10:42:37,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604532613] [2020-04-18 10:42:37,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:42:37,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:42:37,340 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:42:37,341 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:37,345 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 89 transitions. [2020-04-18 10:42:37,346 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:42:37,391 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 10:42:37,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:42:37,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:42:37,392 INFO L87 Difference]: Start difference. First operand 134 states and 328 transitions. Second operand 6 states. [2020-04-18 10:42:37,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:37,428 INFO L93 Difference]: Finished difference Result 206 states and 460 transitions. [2020-04-18 10:42:37,429 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 460 transitions. [2020-04-18 10:42:37,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:42:37,429 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:42:37,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:37,430 INFO L82 PathProgramCache]: Analyzing trace with hash 9700389, now seen corresponding path program 4 times [2020-04-18 10:42:37,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:42:37,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490699039] [2020-04-18 10:42:37,430 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:42:37,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:42:37,456 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 10:42:37,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490699039] [2020-04-18 10:42:37,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:42:37,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:42:37,457 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:42:37,459 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:37,463 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 87 transitions. [2020-04-18 10:42:37,463 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:42:37,490 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 10:42:37,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:42:37,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-04-18 10:42:37,490 INFO L87 Difference]: Start difference. First operand 206 states and 460 transitions. Second operand 4 states. [2020-04-18 10:42:37,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:37,507 INFO L93 Difference]: Finished difference Result 222 states and 478 transitions. [2020-04-18 10:42:37,507 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 478 transitions. [2020-04-18 10:42:37,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:42:37,508 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:42:37,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:37,508 INFO L82 PathProgramCache]: Analyzing trace with hash 9656679, now seen corresponding path program 5 times [2020-04-18 10:42:37,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:42:37,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148230212] [2020-04-18 10:42:37,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:42:37,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:42:37,553 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 10:42:37,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148230212] [2020-04-18 10:42:37,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:42:37,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:42:37,556 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:42:37,557 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:37,560 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 67 transitions. [2020-04-18 10:42:37,561 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:42:37,581 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:42:37,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:42:37,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-04-18 10:42:37,582 INFO L87 Difference]: Start difference. First operand 222 states and 478 transitions. Second operand 4 states. [2020-04-18 10:42:37,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:37,607 INFO L93 Difference]: Finished difference Result 282 states and 566 transitions. [2020-04-18 10:42:37,607 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 566 transitions. [2020-04-18 10:42:37,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:42:37,608 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 10:42:37,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:37,609 INFO L82 PathProgramCache]: Analyzing trace with hash 2064936489, now seen corresponding path program 6 times [2020-04-18 10:42:37,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:42:37,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724845495] [2020-04-18 10:42:37,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:42:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:42:37,644 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 10:42:37,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724845495] [2020-04-18 10:42:37,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:42:37,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:42:37,645 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:42:37,646 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:37,649 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 60 transitions. [2020-04-18 10:42:37,649 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:42:37,692 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:42:37,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:42:37,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-04-18 10:42:37,693 INFO L87 Difference]: Start difference. First operand 282 states and 566 transitions. Second operand 6 states. [2020-04-18 10:42:37,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:37,746 INFO L93 Difference]: Finished difference Result 290 states and 572 transitions. [2020-04-18 10:42:37,746 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 572 transitions. [2020-04-18 10:42:37,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:42:37,747 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 10:42:37,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:37,748 INFO L82 PathProgramCache]: Analyzing trace with hash 877737129, now seen corresponding path program 7 times [2020-04-18 10:42:37,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:42:37,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498177309] [2020-04-18 10:42:37,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:42:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:42:37,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:42:37,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498177309] [2020-04-18 10:42:37,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:42:37,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:42:37,789 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:42:37,789 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:37,793 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 54 transitions. [2020-04-18 10:42:37,793 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:42:37,861 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 10:42:37,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:42:37,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-04-18 10:42:37,862 INFO L87 Difference]: Start difference. First operand 290 states and 572 transitions. Second operand 7 states. [2020-04-18 10:42:37,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:37,912 INFO L93 Difference]: Finished difference Result 290 states and 572 transitions. [2020-04-18 10:42:37,912 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 572 transitions. [2020-04-18 10:42:37,913 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:42:37,913 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [830806573] [2020-04-18 10:42:37,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:42:37,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 10:42:37,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [830806573] [2020-04-18 10:42:37,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 10:42:37,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:42:37,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 10:42:37,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-04-18 10:42:37,915 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 14 states. [2020-04-18 10:42:38,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:38,215 INFO L93 Difference]: Finished difference Result 44 states and 70 transitions. [2020-04-18 10:42:38,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 10:42:38,215 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2020-04-18 10:42:38,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:42:38,216 INFO L225 Difference]: With dead ends: 44 [2020-04-18 10:42:38,216 INFO L226 Difference]: Without dead ends: 38 [2020-04-18 10:42:38,217 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812 [2020-04-18 10:42:38,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-04-18 10:42:38,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-04-18 10:42:38,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-04-18 10:42:38,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 60 transitions. [2020-04-18 10:42:38,220 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 60 transitions. Word has length 15 [2020-04-18 10:42:38,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:42:38,220 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 60 transitions. [2020-04-18 10:42:38,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 10:42:38,221 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 60 transitions. [2020-04-18 10:42:38,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:42:38,221 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:42:38,221 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:42:38,221 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:42:38,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:38,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1637147722, now seen corresponding path program 1 times [2020-04-18 10:42:38,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:42:38,222 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1242281010] [2020-04-18 10:42:38,223 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:38,226 INFO L259 McrAutomatonBuilder]: Finished intersection with 234 states and 656 transitions. [2020-04-18 10:42:38,228 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-18 10:42:38,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:42:38,230 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:42:38,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:38,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1057896634, now seen corresponding path program 2 times [2020-04-18 10:42:38,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:42:38,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835696756] [2020-04-18 10:42:38,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:42:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:42:38,260 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 10:42:38,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835696756] [2020-04-18 10:42:38,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:42:38,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:42:38,261 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:42:38,262 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:38,266 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 75 transitions. [2020-04-18 10:42:38,266 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:42:38,274 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:42:38,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:42:38,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:42:38,275 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-04-18 10:42:38,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:38,278 INFO L93 Difference]: Finished difference Result 266 states and 720 transitions. [2020-04-18 10:42:38,278 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 720 transitions. [2020-04-18 10:42:38,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:42:38,279 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:42:38,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:38,280 INFO L82 PathProgramCache]: Analyzing trace with hash -508157784, now seen corresponding path program 3 times [2020-04-18 10:42:38,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:42:38,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311063555] [2020-04-18 10:42:38,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:42:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:42:38,309 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 10:42:38,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311063555] [2020-04-18 10:42:38,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:42:38,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:42:38,309 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:42:38,311 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:38,318 INFO L259 McrAutomatonBuilder]: Finished intersection with 74 states and 136 transitions. [2020-04-18 10:42:38,318 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:42:38,363 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 15 times. [2020-04-18 10:42:38,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:42:38,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:42:38,363 INFO L87 Difference]: Start difference. First operand 266 states and 720 transitions. Second operand 6 states. [2020-04-18 10:42:38,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:38,417 INFO L93 Difference]: Finished difference Result 458 states and 1184 transitions. [2020-04-18 10:42:38,417 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 1184 transitions. [2020-04-18 10:42:38,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:42:38,419 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:42:38,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:38,419 INFO L82 PathProgramCache]: Analyzing trace with hash 732089286, now seen corresponding path program 4 times [2020-04-18 10:42:38,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:42:38,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597255324] [2020-04-18 10:42:38,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:42:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:42:38,451 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 10:42:38,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597255324] [2020-04-18 10:42:38,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:42:38,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:42:38,453 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:42:38,454 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:38,460 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 85 transitions. [2020-04-18 10:42:38,460 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:42:38,495 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 10:42:38,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:42:38,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-04-18 10:42:38,496 INFO L87 Difference]: Start difference. First operand 458 states and 1184 transitions. Second operand 4 states. [2020-04-18 10:42:38,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:38,515 INFO L93 Difference]: Finished difference Result 506 states and 1270 transitions. [2020-04-18 10:42:38,515 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 1270 transitions. [2020-04-18 10:42:38,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:42:38,517 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:42:38,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:38,517 INFO L82 PathProgramCache]: Analyzing trace with hash 687970086, now seen corresponding path program 5 times [2020-04-18 10:42:38,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:42:38,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411686400] [2020-04-18 10:42:38,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:42:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:42:38,550 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 10:42:38,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411686400] [2020-04-18 10:42:38,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:42:38,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:42:38,552 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:42:38,553 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:38,558 INFO L259 McrAutomatonBuilder]: Finished intersection with 49 states and 80 transitions. [2020-04-18 10:42:38,559 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:42:38,598 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 10:42:38,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:42:38,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-04-18 10:42:38,599 INFO L87 Difference]: Start difference. First operand 506 states and 1270 transitions. Second operand 5 states. [2020-04-18 10:42:38,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:38,623 INFO L93 Difference]: Finished difference Result 750 states and 1764 transitions. [2020-04-18 10:42:38,623 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1764 transitions. [2020-04-18 10:42:38,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:42:38,625 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 10:42:38,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:38,625 INFO L82 PathProgramCache]: Analyzing trace with hash 690083976, now seen corresponding path program 6 times [2020-04-18 10:42:38,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:42:38,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018384056] [2020-04-18 10:42:38,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:42:38,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:42:38,654 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 10:42:38,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018384056] [2020-04-18 10:42:38,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:42:38,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:42:38,655 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:42:38,657 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:38,661 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 67 transitions. [2020-04-18 10:42:38,662 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:42:38,688 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:42:38,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:42:38,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-04-18 10:42:38,688 INFO L87 Difference]: Start difference. First operand 750 states and 1764 transitions. Second operand 4 states. [2020-04-18 10:42:38,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:38,721 INFO L93 Difference]: Finished difference Result 1060 states and 2313 transitions. [2020-04-18 10:42:38,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 2313 transitions. [2020-04-18 10:42:38,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:42:38,724 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 10:42:38,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:38,724 INFO L82 PathProgramCache]: Analyzing trace with hash 129025226, now seen corresponding path program 7 times [2020-04-18 10:42:38,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:42:38,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273526570] [2020-04-18 10:42:38,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:42:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:42:38,760 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 10:42:38,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273526570] [2020-04-18 10:42:38,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:42:38,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:42:38,761 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:42:38,762 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:38,767 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 58 transitions. [2020-04-18 10:42:38,768 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:42:38,817 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:42:38,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:42:38,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-04-18 10:42:38,818 INFO L87 Difference]: Start difference. First operand 1060 states and 2313 transitions. Second operand 6 states. [2020-04-18 10:42:38,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:38,928 INFO L93 Difference]: Finished difference Result 1144 states and 2411 transitions. [2020-04-18 10:42:38,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 2411 transitions. [2020-04-18 10:42:38,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:42:38,931 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 10:42:38,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:42:38,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1691795752, now seen corresponding path program 8 times [2020-04-18 10:42:38,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:42:38,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580288259] [2020-04-18 10:42:38,932 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:42:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:42:38,969 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 10:42:38,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580288259] [2020-04-18 10:42:38,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:42:38,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 10:42:38,970 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:42:38,971 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:42:38,975 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 56 transitions. [2020-04-18 10:42:38,975 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:42:39,017 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 10:42:39,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:42:39,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2020-04-18 10:42:39,017 INFO L87 Difference]: Start difference. First operand 1144 states and 2411 transitions. Second operand 7 states. [2020-04-18 10:42:39,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:39,123 INFO L93 Difference]: Finished difference Result 1152 states and 2415 transitions. [2020-04-18 10:42:39,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 2415 transitions. [2020-04-18 10:42:39,126 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:42:39,127 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1242281010] [2020-04-18 10:42:39,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:42:39,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 10:42:39,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1242281010] [2020-04-18 10:42:39,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-04-18 10:42:39,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:42:39,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 10:42:39,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2020-04-18 10:42:39,128 INFO L87 Difference]: Start difference. First operand 38 states and 60 transitions. Second operand 17 states. [2020-04-18 10:42:39,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:42:39,471 INFO L93 Difference]: Finished difference Result 37 states and 59 transitions. [2020-04-18 10:42:39,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 10:42:39,472 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2020-04-18 10:42:39,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:42:39,472 INFO L225 Difference]: With dead ends: 37 [2020-04-18 10:42:39,472 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 10:42:39,473 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=232, Invalid=958, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 10:42:39,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 10:42:39,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 10:42:39,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 10:42:39,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 10:42:39,474 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 10:42:39,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:42:39,474 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 10:42:39,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-04-18 10:42:39,474 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 10:42:39,474 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:42:39,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 10:42:39 BasicIcfg [2020-04-18 10:42:39,478 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 10:42:39,480 INFO L168 Benchmark]: Toolchain (without parser) took 8891.05 ms. Allocated memory was 146.8 MB in the beginning and 299.9 MB in the end (delta: 153.1 MB). Free memory was 104.0 MB in the beginning and 170.4 MB in the end (delta: -66.4 MB). Peak memory consumption was 86.7 MB. Max. memory is 7.1 GB. [2020-04-18 10:42:39,481 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 146.8 MB. Free memory is still 122.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 10:42:39,481 INFO L168 Benchmark]: CACSL2BoogieTranslator took 730.78 ms. Allocated memory was 146.8 MB in the beginning and 205.5 MB in the end (delta: 58.7 MB). Free memory was 102.1 MB in the beginning and 163.1 MB in the end (delta: -61.0 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-04-18 10:42:39,482 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.42 ms. Allocated memory is still 205.5 MB. Free memory was 163.1 MB in the beginning and 160.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-04-18 10:42:39,482 INFO L168 Benchmark]: Boogie Preprocessor took 31.10 ms. Allocated memory is still 205.5 MB. Free memory was 160.2 MB in the beginning and 159.3 MB in the end (delta: 963.3 kB). Peak memory consumption was 963.3 kB. Max. memory is 7.1 GB. [2020-04-18 10:42:39,483 INFO L168 Benchmark]: RCFGBuilder took 440.81 ms. Allocated memory is still 205.5 MB. Free memory was 159.3 MB in the beginning and 137.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-04-18 10:42:39,483 INFO L168 Benchmark]: TraceAbstraction took 7607.04 ms. Allocated memory was 205.5 MB in the beginning and 299.9 MB in the end (delta: 94.4 MB). Free memory was 136.3 MB in the beginning and 170.4 MB in the end (delta: -34.1 MB). Peak memory consumption was 60.3 MB. Max. memory is 7.1 GB. [2020-04-18 10:42:39,486 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 146.8 MB. Free memory is still 122.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 730.78 ms. Allocated memory was 146.8 MB in the beginning and 205.5 MB in the end (delta: 58.7 MB). Free memory was 102.1 MB in the beginning and 163.1 MB in the end (delta: -61.0 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 53.42 ms. Allocated memory is still 205.5 MB. Free memory was 163.1 MB in the beginning and 160.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.10 ms. Allocated memory is still 205.5 MB. Free memory was 160.2 MB in the beginning and 159.3 MB in the end (delta: 963.3 kB). Peak memory consumption was 963.3 kB. Max. memory is 7.1 GB. * RCFGBuilder took 440.81 ms. Allocated memory is still 205.5 MB. Free memory was 159.3 MB in the beginning and 137.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7607.04 ms. Allocated memory was 205.5 MB in the beginning and 299.9 MB in the end (delta: 94.4 MB). Free memory was 136.3 MB in the beginning and 170.4 MB in the end (delta: -34.1 MB). Peak memory consumption was 60.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.0s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 679 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2768 CheckedPairsTotal, 58 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.4s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 149 SDtfs, 315 SDslu, 404 SDs, 0 SdLazy, 646 SolverSat, 123 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 621 GetRequests, 490 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 24 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...