/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-NoLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:32:39,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:32:39,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:32:39,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:32:39,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:32:39,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:32:39,243 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:32:39,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:32:39,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:32:39,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:32:39,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:32:39,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:32:39,250 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:32:39,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:32:39,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:32:39,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:32:39,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:32:39,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:32:39,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:32:39,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:32:39,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:32:39,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:32:39,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:32:39,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:32:39,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:32:39,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:32:39,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:32:39,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:32:39,266 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:32:39,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:32:39,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:32:39,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:32:39,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:32:39,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:32:39,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:32:39,271 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:32:39,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:32:39,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:32:39,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:32:39,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:32:39,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:32:39,274 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-NoLbe-McrStrategy.epf [2020-04-18 19:32:39,288 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:32:39,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:32:39,290 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:32:39,290 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:32:39,290 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:32:39,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:32:39,290 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:32:39,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:32:39,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:32:39,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:32:39,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:32:39,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:32:39,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:32:39,292 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:32:39,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:32:39,292 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:32:39,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:32:39,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:32:39,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:32:39,293 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:32:39,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:32:39,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:32:39,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:32:39,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:32:39,294 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:32:39,294 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:32:39,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:32:39,294 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:32:39,294 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:32:39,295 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:32:39,295 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:32:39,561 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:32:39,582 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:32:39,585 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:32:39,586 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:32:39,587 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:32:39,587 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.opt.i [2020-04-18 19:32:39,652 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4306f1f09/55316aae71564aeb82114dc5dc9799b8/FLAG5ca1a4a87 [2020-04-18 19:32:40,208 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:32:40,208 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_tso.opt.i [2020-04-18 19:32:40,224 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4306f1f09/55316aae71564aeb82114dc5dc9799b8/FLAG5ca1a4a87 [2020-04-18 19:32:40,501 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4306f1f09/55316aae71564aeb82114dc5dc9799b8 [2020-04-18 19:32:40,510 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:32:40,527 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:32:40,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:32:40,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:32:40,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:32:40,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:32:40" (1/1) ... [2020-04-18 19:32:40,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d5b73c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:40, skipping insertion in model container [2020-04-18 19:32:40,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:32:40" (1/1) ... [2020-04-18 19:32:40,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:32:40,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:32:41,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:32:41,139 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:32:41,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:32:41,290 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:32:41,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:41 WrapperNode [2020-04-18 19:32:41,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:32:41,292 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:32:41,292 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:32:41,292 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:32:41,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:41" (1/1) ... [2020-04-18 19:32:41,331 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:41" (1/1) ... [2020-04-18 19:32:41,354 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:32:41,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:32:41,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:32:41,355 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:32:41,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:41" (1/1) ... [2020-04-18 19:32:41,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:41" (1/1) ... [2020-04-18 19:32:41,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:41" (1/1) ... [2020-04-18 19:32:41,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:41" (1/1) ... [2020-04-18 19:32:41,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:41" (1/1) ... [2020-04-18 19:32:41,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:41" (1/1) ... [2020-04-18 19:32:41,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:41" (1/1) ... [2020-04-18 19:32:41,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:32:41,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:32:41,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:32:41,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:32:41,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:41" (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 19:32:41,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:32:41,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:32:41,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:32:41,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:32:41,442 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:32:41,442 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:32:41,442 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:32:41,442 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:32:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:32:41,443 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:32:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:32:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:32:41,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:32:41,445 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 19:32:41,834 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:32:41,835 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:32:41,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:32:41 BoogieIcfgContainer [2020-04-18 19:32:41,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:32:41,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:32:41,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:32:41,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:32:41,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:32:40" (1/3) ... [2020-04-18 19:32:41,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a55768d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:32:41, skipping insertion in model container [2020-04-18 19:32:41,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:41" (2/3) ... [2020-04-18 19:32:41,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a55768d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:32:41, skipping insertion in model container [2020-04-18 19:32:41,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:32:41" (3/3) ... [2020-04-18 19:32:41,848 INFO L109 eAbstractionObserver]: Analyzing ICFG safe014_tso.opt.i [2020-04-18 19:32:41,859 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:32:41,859 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:32:41,868 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:32:41,870 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:32:41,907 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:41,907 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:41,908 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:41,909 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:41,910 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:41,910 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:41,910 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:41,911 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:41,911 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:41,912 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:41,912 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:41,912 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:41,913 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:41,913 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:41,913 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:41,914 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:41,915 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:41,915 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:41,923 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:41,924 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:41,924 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:41,925 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:41,938 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:41,939 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:41,939 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:41,939 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:41,948 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:41,948 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:41,948 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:41,949 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:41,962 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 19:32:41,980 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:32:41,980 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:32:41,980 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:32:41,980 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:32:41,981 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:32:41,981 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:32:41,981 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:32:41,981 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:32:41,995 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 19:32:42,488 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8472 states. [2020-04-18 19:32:42,490 INFO L276 IsEmpty]: Start isEmpty. Operand 8472 states. [2020-04-18 19:32:42,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:32:42,522 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:32:42,523 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:32:42,524 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:32:42,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:42,533 INFO L82 PathProgramCache]: Analyzing trace with hash -927851968, now seen corresponding path program 1 times [2020-04-18 19:32:42,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:32:42,542 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [648740771] [2020-04-18 19:32:42,560 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:42,581 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 19:32:42,584 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-04-18 19:32:42,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:32:42,585 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:32:42,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:42,586 INFO L82 PathProgramCache]: Analyzing trace with hash -927851968, now seen corresponding path program 2 times [2020-04-18 19:32:42,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:42,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984219248] [2020-04-18 19:32:42,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:43,137 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 19:32:43,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984219248] [2020-04-18 19:32:43,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:43,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:32:43,140 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:43,145 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:43,156 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 19:32:43,157 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:43,238 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:32:43,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:32:43,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:32:43,244 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 7 states. [2020-04-18 19:32:43,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:43,326 INFO L93 Difference]: Finished difference Result 37 states and 36 transitions. [2020-04-18 19:32:43,326 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 36 transitions. [2020-04-18 19:32:43,327 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:32:43,327 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [648740771] [2020-04-18 19:32:43,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:32:43,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:32:43,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [648740771] [2020-04-18 19:32:43,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:32:43,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:32:43,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:32:43,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:32:43,337 INFO L87 Difference]: Start difference. First operand 8472 states. Second operand 7 states. [2020-04-18 19:32:43,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:43,889 INFO L93 Difference]: Finished difference Result 18576 states and 63960 transitions. [2020-04-18 19:32:43,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:32:43,891 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-04-18 19:32:43,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:32:43,967 INFO L225 Difference]: With dead ends: 18576 [2020-04-18 19:32:43,967 INFO L226 Difference]: Without dead ends: 5946 [2020-04-18 19:32:43,971 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:32:44,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5946 states. [2020-04-18 19:32:44,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5946 to 4872. [2020-04-18 19:32:44,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4872 states. [2020-04-18 19:32:44,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 16371 transitions. [2020-04-18 19:32:44,446 INFO L78 Accepts]: Start accepts. Automaton has 4872 states and 16371 transitions. Word has length 36 [2020-04-18 19:32:44,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:32:44,448 INFO L479 AbstractCegarLoop]: Abstraction has 4872 states and 16371 transitions. [2020-04-18 19:32:44,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:32:44,452 INFO L276 IsEmpty]: Start isEmpty. Operand 4872 states and 16371 transitions. [2020-04-18 19:32:44,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:32:44,465 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:32:44,473 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:32:44,473 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:32:44,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:44,474 INFO L82 PathProgramCache]: Analyzing trace with hash 57831617, now seen corresponding path program 1 times [2020-04-18 19:32:44,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:32:44,474 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1009660298] [2020-04-18 19:32:44,476 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:44,478 INFO L259 McrAutomatonBuilder]: Finished intersection with 79 states and 118 transitions. [2020-04-18 19:32:44,481 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2020-04-18 19:32:44,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:32:44,483 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:32:44,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:44,484 INFO L82 PathProgramCache]: Analyzing trace with hash 57831617, now seen corresponding path program 2 times [2020-04-18 19:32:44,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:44,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216032169] [2020-04-18 19:32:44,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:44,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:44,695 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 19:32:44,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216032169] [2020-04-18 19:32:44,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:44,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:32:44,696 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:44,704 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:44,713 INFO L259 McrAutomatonBuilder]: Finished intersection with 67 states and 94 transitions. [2020-04-18 19:32:44,714 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:44,770 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:32:44,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:32:44,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:32:44,771 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 7 states. [2020-04-18 19:32:44,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:44,839 INFO L93 Difference]: Finished difference Result 79 states and 118 transitions. [2020-04-18 19:32:44,840 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 118 transitions. [2020-04-18 19:32:44,840 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:32:44,841 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1009660298] [2020-04-18 19:32:44,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:32:44,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:32:44,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1009660298] [2020-04-18 19:32:44,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:32:44,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:32:44,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:32:44,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:32:44,843 INFO L87 Difference]: Start difference. First operand 4872 states and 16371 transitions. Second operand 7 states. [2020-04-18 19:32:45,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:45,193 INFO L93 Difference]: Finished difference Result 6842 states and 22637 transitions. [2020-04-18 19:32:45,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:32:45,194 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-04-18 19:32:45,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:32:45,383 INFO L225 Difference]: With dead ends: 6842 [2020-04-18 19:32:45,383 INFO L226 Difference]: Without dead ends: 5314 [2020-04-18 19:32:45,397 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:32:45,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5314 states. [2020-04-18 19:32:45,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5314 to 4172. [2020-04-18 19:32:45,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4172 states. [2020-04-18 19:32:45,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4172 states to 4172 states and 13897 transitions. [2020-04-18 19:32:45,626 INFO L78 Accepts]: Start accepts. Automaton has 4172 states and 13897 transitions. Word has length 38 [2020-04-18 19:32:45,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:32:45,627 INFO L479 AbstractCegarLoop]: Abstraction has 4172 states and 13897 transitions. [2020-04-18 19:32:45,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:32:45,627 INFO L276 IsEmpty]: Start isEmpty. Operand 4172 states and 13897 transitions. [2020-04-18 19:32:45,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:32:45,641 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:32:45,641 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:32:45,642 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:32:45,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:45,644 INFO L82 PathProgramCache]: Analyzing trace with hash 795573810, now seen corresponding path program 1 times [2020-04-18 19:32:45,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:32:45,645 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [503316295] [2020-04-18 19:32:45,647 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:45,653 INFO L259 McrAutomatonBuilder]: Finished intersection with 181 states and 384 transitions. [2020-04-18 19:32:45,656 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2020-04-18 19:32:45,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:32:45,657 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:32:45,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:45,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1317030912, now seen corresponding path program 2 times [2020-04-18 19:32:45,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:45,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857773973] [2020-04-18 19:32:45,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:45,834 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 19:32:45,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857773973] [2020-04-18 19:32:45,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:45,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:32:45,835 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:45,840 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:45,855 INFO L259 McrAutomatonBuilder]: Finished intersection with 133 states and 264 transitions. [2020-04-18 19:32:45,856 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:46,002 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 11 times. [2020-04-18 19:32:46,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:32:46,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:32:46,003 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 9 states. [2020-04-18 19:32:46,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:46,205 INFO L93 Difference]: Finished difference Result 181 states and 384 transitions. [2020-04-18 19:32:46,205 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 384 transitions. [2020-04-18 19:32:46,206 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:32:46,208 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [503316295] [2020-04-18 19:32:46,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:32:46,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:32:46,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [503316295] [2020-04-18 19:32:46,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 19:32:46,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:32:46,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:32:46,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-04-18 19:32:46,209 INFO L87 Difference]: Start difference. First operand 4172 states and 13897 transitions. Second operand 9 states. [2020-04-18 19:32:46,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:46,689 INFO L93 Difference]: Finished difference Result 7801 states and 25616 transitions. [2020-04-18 19:32:46,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:32:46,690 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-04-18 19:32:46,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:32:46,748 INFO L225 Difference]: With dead ends: 7801 [2020-04-18 19:32:46,748 INFO L226 Difference]: Without dead ends: 6217 [2020-04-18 19:32:46,749 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2020-04-18 19:32:46,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6217 states. [2020-04-18 19:32:46,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6217 to 4164. [2020-04-18 19:32:46,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4164 states. [2020-04-18 19:32:46,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4164 states to 4164 states and 13867 transitions. [2020-04-18 19:32:46,920 INFO L78 Accepts]: Start accepts. Automaton has 4164 states and 13867 transitions. Word has length 40 [2020-04-18 19:32:46,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:32:46,921 INFO L479 AbstractCegarLoop]: Abstraction has 4164 states and 13867 transitions. [2020-04-18 19:32:46,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 19:32:46,921 INFO L276 IsEmpty]: Start isEmpty. Operand 4164 states and 13867 transitions. [2020-04-18 19:32:46,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:32:46,933 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:32:46,934 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:32:46,938 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:32:46,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:46,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1538988574, now seen corresponding path program 1 times [2020-04-18 19:32:46,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:32:46,940 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [365994873] [2020-04-18 19:32:46,941 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:46,946 INFO L259 McrAutomatonBuilder]: Finished intersection with 232 states and 517 transitions. [2020-04-18 19:32:46,947 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states. [2020-04-18 19:32:46,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:32:46,948 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:32:46,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:46,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1538988574, now seen corresponding path program 2 times [2020-04-18 19:32:46,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:46,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484648701] [2020-04-18 19:32:46,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:47,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:32:47,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484648701] [2020-04-18 19:32:47,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:47,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:32:47,142 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:47,146 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:47,164 INFO L259 McrAutomatonBuilder]: Finished intersection with 166 states and 349 transitions. [2020-04-18 19:32:47,165 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:47,308 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 19:32:47,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:32:47,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:32:47,308 INFO L87 Difference]: Start difference. First operand 232 states. Second operand 11 states. [2020-04-18 19:32:47,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:47,417 INFO L93 Difference]: Finished difference Result 232 states and 517 transitions. [2020-04-18 19:32:47,418 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 517 transitions. [2020-04-18 19:32:47,418 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:32:47,419 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [365994873] [2020-04-18 19:32:47,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:32:47,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:32:47,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [365994873] [2020-04-18 19:32:47,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 19:32:47,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:32:47,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:32:47,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-04-18 19:32:47,421 INFO L87 Difference]: Start difference. First operand 4164 states and 13867 transitions. Second operand 11 states. [2020-04-18 19:32:48,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:48,095 INFO L93 Difference]: Finished difference Result 6510 states and 21304 transitions. [2020-04-18 19:32:48,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 19:32:48,096 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2020-04-18 19:32:48,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:32:48,107 INFO L225 Difference]: With dead ends: 6510 [2020-04-18 19:32:48,107 INFO L226 Difference]: Without dead ends: 2828 [2020-04-18 19:32:48,108 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2020-04-18 19:32:48,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2828 states. [2020-04-18 19:32:48,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2828 to 2430. [2020-04-18 19:32:48,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2430 states. [2020-04-18 19:32:48,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2430 states to 2430 states and 7847 transitions. [2020-04-18 19:32:48,191 INFO L78 Accepts]: Start accepts. Automaton has 2430 states and 7847 transitions. Word has length 41 [2020-04-18 19:32:48,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:32:48,193 INFO L479 AbstractCegarLoop]: Abstraction has 2430 states and 7847 transitions. [2020-04-18 19:32:48,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 19:32:48,193 INFO L276 IsEmpty]: Start isEmpty. Operand 2430 states and 7847 transitions. [2020-04-18 19:32:48,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:32:48,199 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:32:48,199 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:32:48,200 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:32:48,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:48,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1429253103, now seen corresponding path program 1 times [2020-04-18 19:32:48,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:32:48,201 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2037040571] [2020-04-18 19:32:48,202 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:48,213 INFO L259 McrAutomatonBuilder]: Finished intersection with 532 states and 1527 transitions. [2020-04-18 19:32:48,217 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states. [2020-04-18 19:32:48,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:32:48,219 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:32:48,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:48,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1861919001, now seen corresponding path program 2 times [2020-04-18 19:32:48,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:48,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126507795] [2020-04-18 19:32:48,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:48,351 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 19:32:48,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126507795] [2020-04-18 19:32:48,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:48,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:32:48,353 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:48,357 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:48,395 INFO L259 McrAutomatonBuilder]: Finished intersection with 214 states and 499 transitions. [2020-04-18 19:32:48,395 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:48,540 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 15 times. [2020-04-18 19:32:48,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:32:48,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:32:48,543 INFO L87 Difference]: Start difference. First operand 532 states. Second operand 9 states. [2020-04-18 19:32:48,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:48,978 INFO L93 Difference]: Finished difference Result 793 states and 2112 transitions. [2020-04-18 19:32:48,978 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 2112 transitions. [2020-04-18 19:32:48,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:32:48,981 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:32:48,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:48,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1810438991, now seen corresponding path program 3 times [2020-04-18 19:32:48,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:48,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615936163] [2020-04-18 19:32:48,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:49,094 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 19:32:49,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615936163] [2020-04-18 19:32:49,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:49,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:32:49,095 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:49,099 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:49,129 INFO L259 McrAutomatonBuilder]: Finished intersection with 230 states and 543 transitions. [2020-04-18 19:32:49,130 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:49,439 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 22 times. [2020-04-18 19:32:49,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 19:32:49,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2020-04-18 19:32:49,440 INFO L87 Difference]: Start difference. First operand 793 states and 2112 transitions. Second operand 17 states. [2020-04-18 19:32:50,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:50,112 INFO L93 Difference]: Finished difference Result 877 states and 2234 transitions. [2020-04-18 19:32:50,112 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 2234 transitions. [2020-04-18 19:32:50,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:32:50,115 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:32:50,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:50,116 INFO L82 PathProgramCache]: Analyzing trace with hash 313946459, now seen corresponding path program 4 times [2020-04-18 19:32:50,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:50,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453985041] [2020-04-18 19:32:50,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:50,213 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 19:32:50,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453985041] [2020-04-18 19:32:50,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:50,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:32:50,214 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:50,218 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:50,236 INFO L259 McrAutomatonBuilder]: Finished intersection with 173 states and 377 transitions. [2020-04-18 19:32:50,236 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:50,337 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:32:50,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 19:32:50,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=1317, Unknown=0, NotChecked=0, Total=1806 [2020-04-18 19:32:50,340 INFO L87 Difference]: Start difference. First operand 877 states and 2234 transitions. Second operand 12 states. [2020-04-18 19:32:50,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:50,627 INFO L93 Difference]: Finished difference Result 967 states and 2417 transitions. [2020-04-18 19:32:50,627 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 2417 transitions. [2020-04-18 19:32:50,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:32:50,629 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:32:50,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:50,630 INFO L82 PathProgramCache]: Analyzing trace with hash 450147925, now seen corresponding path program 5 times [2020-04-18 19:32:50,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:50,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796803652] [2020-04-18 19:32:50,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:50,725 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 19:32:50,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796803652] [2020-04-18 19:32:50,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:50,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:32:50,727 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:50,730 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:50,759 INFO L259 McrAutomatonBuilder]: Finished intersection with 184 states and 414 transitions. [2020-04-18 19:32:50,759 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:50,791 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 17 times. [2020-04-18 19:32:50,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:32:50,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=583, Invalid=1579, Unknown=0, NotChecked=0, Total=2162 [2020-04-18 19:32:50,793 INFO L87 Difference]: Start difference. First operand 967 states and 2417 transitions. Second operand 11 states. [2020-04-18 19:32:51,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:51,036 INFO L93 Difference]: Finished difference Result 1074 states and 2579 transitions. [2020-04-18 19:32:51,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 2579 transitions. [2020-04-18 19:32:51,064 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:32:51,065 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2037040571] [2020-04-18 19:32:51,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:32:51,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:32:51,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2037040571] [2020-04-18 19:32:51,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-04-18 19:32:51,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:32:51,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-04-18 19:32:51,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=658, Invalid=1792, Unknown=0, NotChecked=0, Total=2450 [2020-04-18 19:32:51,067 INFO L87 Difference]: Start difference. First operand 2430 states and 7847 transitions. Second operand 22 states. [2020-04-18 19:32:51,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:51,457 INFO L93 Difference]: Finished difference Result 3350 states and 10633 transitions. [2020-04-18 19:32:51,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-18 19:32:51,457 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 43 [2020-04-18 19:32:51,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:32:51,467 INFO L225 Difference]: With dead ends: 3350 [2020-04-18 19:32:51,467 INFO L226 Difference]: Without dead ends: 2694 [2020-04-18 19:32:51,469 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=746, Invalid=2116, Unknown=0, NotChecked=0, Total=2862 [2020-04-18 19:32:51,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2020-04-18 19:32:51,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 2226. [2020-04-18 19:32:51,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2226 states. [2020-04-18 19:32:51,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2226 states to 2226 states and 7134 transitions. [2020-04-18 19:32:51,535 INFO L78 Accepts]: Start accepts. Automaton has 2226 states and 7134 transitions. Word has length 43 [2020-04-18 19:32:51,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:32:51,536 INFO L479 AbstractCegarLoop]: Abstraction has 2226 states and 7134 transitions. [2020-04-18 19:32:51,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-04-18 19:32:51,536 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states and 7134 transitions. [2020-04-18 19:32:51,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:32:51,540 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:32:51,541 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:32:51,541 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:32:51,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:51,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1259730271, now seen corresponding path program 1 times [2020-04-18 19:32:51,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:32:51,542 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1020880242] [2020-04-18 19:32:51,543 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:51,558 INFO L259 McrAutomatonBuilder]: Finished intersection with 700 states and 2080 transitions. [2020-04-18 19:32:51,563 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states. [2020-04-18 19:32:51,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:32:51,565 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:32:51,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:51,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1158382409, now seen corresponding path program 2 times [2020-04-18 19:32:51,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:51,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146595541] [2020-04-18 19:32:51,566 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:51,676 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 19:32:51,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146595541] [2020-04-18 19:32:51,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:51,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:32:51,677 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:51,680 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:51,707 INFO L259 McrAutomatonBuilder]: Finished intersection with 268 states and 658 transitions. [2020-04-18 19:32:51,707 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:51,838 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 15 times. [2020-04-18 19:32:51,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:32:51,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:32:51,839 INFO L87 Difference]: Start difference. First operand 700 states. Second operand 11 states. [2020-04-18 19:32:52,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:52,502 INFO L93 Difference]: Finished difference Result 818 states and 2316 transitions. [2020-04-18 19:32:52,502 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 2316 transitions. [2020-04-18 19:32:52,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:32:52,505 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:32:52,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:52,505 INFO L82 PathProgramCache]: Analyzing trace with hash 563805067, now seen corresponding path program 3 times [2020-04-18 19:32:52,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:52,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782340200] [2020-04-18 19:32:52,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:52,589 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 19:32:52,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782340200] [2020-04-18 19:32:52,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:52,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:32:52,591 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:52,594 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:52,633 INFO L259 McrAutomatonBuilder]: Finished intersection with 209 states and 477 transitions. [2020-04-18 19:32:52,634 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:52,711 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 19:32:52,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:32:52,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=751, Unknown=0, NotChecked=0, Total=992 [2020-04-18 19:32:52,712 INFO L87 Difference]: Start difference. First operand 818 states and 2316 transitions. Second operand 6 states. [2020-04-18 19:32:52,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:52,779 INFO L93 Difference]: Finished difference Result 818 states and 2316 transitions. [2020-04-18 19:32:52,779 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 2316 transitions. [2020-04-18 19:32:52,780 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:32:52,781 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1020880242] [2020-04-18 19:32:52,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:32:52,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:32:52,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1020880242] [2020-04-18 19:32:52,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 19:32:52,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:32:52,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 19:32:52,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=931, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 19:32:52,783 INFO L87 Difference]: Start difference. First operand 2226 states and 7134 transitions. Second operand 15 states. [2020-04-18 19:32:53,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:53,938 INFO L93 Difference]: Finished difference Result 3443 states and 10881 transitions. [2020-04-18 19:32:53,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-04-18 19:32:53,939 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2020-04-18 19:32:53,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:32:53,947 INFO L225 Difference]: With dead ends: 3443 [2020-04-18 19:32:53,948 INFO L226 Difference]: Without dead ends: 2443 [2020-04-18 19:32:53,949 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1166 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=742, Invalid=3164, Unknown=0, NotChecked=0, Total=3906 [2020-04-18 19:32:53,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2443 states. [2020-04-18 19:32:54,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2443 to 2014. [2020-04-18 19:32:54,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2014 states. [2020-04-18 19:32:54,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2014 states to 2014 states and 6351 transitions. [2020-04-18 19:32:54,008 INFO L78 Accepts]: Start accepts. Automaton has 2014 states and 6351 transitions. Word has length 44 [2020-04-18 19:32:54,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:32:54,009 INFO L479 AbstractCegarLoop]: Abstraction has 2014 states and 6351 transitions. [2020-04-18 19:32:54,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 19:32:54,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2014 states and 6351 transitions. [2020-04-18 19:32:54,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:32:54,013 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:32:54,014 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:32:54,014 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:32:54,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:54,014 INFO L82 PathProgramCache]: Analyzing trace with hash -211044402, now seen corresponding path program 1 times [2020-04-18 19:32:54,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:32:54,015 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2039146062] [2020-04-18 19:32:54,016 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:54,034 INFO L259 McrAutomatonBuilder]: Finished intersection with 868 states and 2633 transitions. [2020-04-18 19:32:54,040 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states. [2020-04-18 19:32:54,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:32:54,043 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:32:54,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:54,043 INFO L82 PathProgramCache]: Analyzing trace with hash -572118500, now seen corresponding path program 2 times [2020-04-18 19:32:54,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:54,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21590109] [2020-04-18 19:32:54,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:54,156 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 19:32:54,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21590109] [2020-04-18 19:32:54,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:54,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:32:54,157 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:54,164 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:54,193 INFO L259 McrAutomatonBuilder]: Finished intersection with 202 states and 437 transitions. [2020-04-18 19:32:54,194 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:54,326 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 17 times. [2020-04-18 19:32:54,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:32:54,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:32:54,330 INFO L87 Difference]: Start difference. First operand 868 states. Second operand 11 states. [2020-04-18 19:32:55,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:55,056 INFO L93 Difference]: Finished difference Result 1003 states and 2902 transitions. [2020-04-18 19:32:55,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 2902 transitions. [2020-04-18 19:32:55,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:32:55,059 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:32:55,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:55,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1059042606, now seen corresponding path program 3 times [2020-04-18 19:32:55,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:55,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509509806] [2020-04-18 19:32:55,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:55,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:55,142 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 19:32:55,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509509806] [2020-04-18 19:32:55,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:55,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:32:55,143 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:55,145 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:55,162 INFO L259 McrAutomatonBuilder]: Finished intersection with 175 states and 366 transitions. [2020-04-18 19:32:55,162 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:55,268 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 19:32:55,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:32:55,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=874, Unknown=0, NotChecked=0, Total=1122 [2020-04-18 19:32:55,269 INFO L87 Difference]: Start difference. First operand 1003 states and 2902 transitions. Second operand 8 states. [2020-04-18 19:32:55,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:55,418 INFO L93 Difference]: Finished difference Result 1003 states and 2902 transitions. [2020-04-18 19:32:55,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 2902 transitions. [2020-04-18 19:32:55,420 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:32:55,420 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2039146062] [2020-04-18 19:32:55,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:32:55,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:32:55,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2039146062] [2020-04-18 19:32:55,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-04-18 19:32:55,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:32:55,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 19:32:55,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=1261, Unknown=0, NotChecked=0, Total=1560 [2020-04-18 19:32:55,422 INFO L87 Difference]: Start difference. First operand 2014 states and 6351 transitions. Second operand 17 states. [2020-04-18 19:32:56,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:56,555 INFO L93 Difference]: Finished difference Result 2542 states and 7806 transitions. [2020-04-18 19:32:56,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-04-18 19:32:56,556 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 45 [2020-04-18 19:32:56,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:32:56,562 INFO L225 Difference]: With dead ends: 2542 [2020-04-18 19:32:56,562 INFO L226 Difference]: Without dead ends: 1714 [2020-04-18 19:32:56,563 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1307 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=735, Invalid=3555, Unknown=0, NotChecked=0, Total=4290 [2020-04-18 19:32:56,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2020-04-18 19:32:56,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 1474. [2020-04-18 19:32:56,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2020-04-18 19:32:56,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 4446 transitions. [2020-04-18 19:32:56,605 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 4446 transitions. Word has length 45 [2020-04-18 19:32:56,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:32:56,606 INFO L479 AbstractCegarLoop]: Abstraction has 1474 states and 4446 transitions. [2020-04-18 19:32:56,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-04-18 19:32:56,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 4446 transitions. [2020-04-18 19:32:56,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:32:56,610 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:32:56,610 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:32:56,610 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:32:56,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:56,611 INFO L82 PathProgramCache]: Analyzing trace with hash -962653023, now seen corresponding path program 1 times [2020-04-18 19:32:56,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:32:56,611 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1819438350] [2020-04-18 19:32:56,613 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:56,638 INFO L259 McrAutomatonBuilder]: Finished intersection with 1063 states and 3294 transitions. [2020-04-18 19:32:56,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states. [2020-04-18 19:32:56,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:32:56,651 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:32:56,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:56,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1649551315, now seen corresponding path program 2 times [2020-04-18 19:32:56,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:56,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785815583] [2020-04-18 19:32:56,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:56,741 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 19:32:56,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785815583] [2020-04-18 19:32:56,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:56,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:32:56,742 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:56,746 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:56,775 INFO L259 McrAutomatonBuilder]: Finished intersection with 208 states and 448 transitions. [2020-04-18 19:32:56,775 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:56,899 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 23 times. [2020-04-18 19:32:56,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:32:56,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:32:56,900 INFO L87 Difference]: Start difference. First operand 1063 states. Second operand 10 states. [2020-04-18 19:32:57,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:57,530 INFO L93 Difference]: Finished difference Result 1588 states and 4913 transitions. [2020-04-18 19:32:57,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 4913 transitions. [2020-04-18 19:32:57,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:32:57,534 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:32:57,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:57,534 INFO L82 PathProgramCache]: Analyzing trace with hash -429946923, now seen corresponding path program 3 times [2020-04-18 19:32:57,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:57,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329274790] [2020-04-18 19:32:57,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:57,693 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 19:32:57,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329274790] [2020-04-18 19:32:57,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:57,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:32:57,694 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:57,698 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:57,729 INFO L259 McrAutomatonBuilder]: Finished intersection with 237 states and 526 transitions. [2020-04-18 19:32:57,730 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:57,758 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 19:32:57,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:32:57,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=393, Unknown=0, NotChecked=0, Total=552 [2020-04-18 19:32:57,762 INFO L87 Difference]: Start difference. First operand 1588 states and 4913 transitions. Second operand 7 states. [2020-04-18 19:32:57,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:57,941 INFO L93 Difference]: Finished difference Result 1876 states and 5561 transitions. [2020-04-18 19:32:57,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1876 states and 5561 transitions. [2020-04-18 19:32:57,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:32:57,945 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:32:57,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:57,946 INFO L82 PathProgramCache]: Analyzing trace with hash 2096674215, now seen corresponding path program 4 times [2020-04-18 19:32:57,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:57,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563424964] [2020-04-18 19:32:57,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:58,040 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 19:32:58,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563424964] [2020-04-18 19:32:58,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:58,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:32:58,041 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:58,045 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:58,074 INFO L259 McrAutomatonBuilder]: Finished intersection with 196 states and 415 transitions. [2020-04-18 19:32:58,074 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:58,221 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 15 times. [2020-04-18 19:32:58,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:32:58,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=1056, Unknown=0, NotChecked=0, Total=1332 [2020-04-18 19:32:58,222 INFO L87 Difference]: Start difference. First operand 1876 states and 5561 transitions. Second operand 8 states. [2020-04-18 19:32:58,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:58,504 INFO L93 Difference]: Finished difference Result 1876 states and 5561 transitions. [2020-04-18 19:32:58,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1876 states and 5561 transitions. [2020-04-18 19:32:58,507 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:32:58,507 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1819438350] [2020-04-18 19:32:58,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:32:58,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:32:58,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1819438350] [2020-04-18 19:32:58,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-04-18 19:32:58,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:32:58,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-18 19:32:58,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=1637, Unknown=0, NotChecked=0, Total=1980 [2020-04-18 19:32:58,509 INFO L87 Difference]: Start difference. First operand 1474 states and 4446 transitions. Second operand 18 states. [2020-04-18 19:32:59,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:59,502 INFO L93 Difference]: Finished difference Result 1444 states and 4218 transitions. [2020-04-18 19:32:59,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 19:32:59,503 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 46 [2020-04-18 19:32:59,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:32:59,507 INFO L225 Difference]: With dead ends: 1444 [2020-04-18 19:32:59,507 INFO L226 Difference]: Without dead ends: 728 [2020-04-18 19:32:59,509 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1303 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=644, Invalid=3516, Unknown=0, NotChecked=0, Total=4160 [2020-04-18 19:32:59,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-04-18 19:32:59,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 704. [2020-04-18 19:32:59,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2020-04-18 19:32:59,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 2004 transitions. [2020-04-18 19:32:59,526 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 2004 transitions. Word has length 46 [2020-04-18 19:32:59,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:32:59,526 INFO L479 AbstractCegarLoop]: Abstraction has 704 states and 2004 transitions. [2020-04-18 19:32:59,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-04-18 19:32:59,526 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 2004 transitions. [2020-04-18 19:32:59,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:32:59,528 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:32:59,528 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:32:59,529 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:32:59,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:59,529 INFO L82 PathProgramCache]: Analyzing trace with hash 171910110, now seen corresponding path program 1 times [2020-04-18 19:32:59,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:32:59,529 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1214061663] [2020-04-18 19:32:59,531 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:59,570 INFO L259 McrAutomatonBuilder]: Finished intersection with 1761 states and 5712 transitions. [2020-04-18 19:32:59,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1761 states. [2020-04-18 19:32:59,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:32:59,589 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:32:59,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:59,589 INFO L82 PathProgramCache]: Analyzing trace with hash -484838578, now seen corresponding path program 2 times [2020-04-18 19:32:59,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:59,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983374701] [2020-04-18 19:32:59,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:59,691 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 19:32:59,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983374701] [2020-04-18 19:32:59,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:59,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:32:59,694 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:59,700 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:59,754 INFO L259 McrAutomatonBuilder]: Finished intersection with 196 states and 398 transitions. [2020-04-18 19:32:59,754 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:59,826 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 19:32:59,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:32:59,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:32:59,827 INFO L87 Difference]: Start difference. First operand 1761 states. Second operand 9 states. [2020-04-18 19:33:00,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:33:00,189 INFO L93 Difference]: Finished difference Result 2441 states and 7644 transitions. [2020-04-18 19:33:00,190 INFO L276 IsEmpty]: Start isEmpty. Operand 2441 states and 7644 transitions. [2020-04-18 19:33:00,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:33:00,194 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:33:00,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:33:00,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1099862712, now seen corresponding path program 3 times [2020-04-18 19:33:00,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:33:00,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974804580] [2020-04-18 19:33:00,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:33:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:33:00,284 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 19:33:00,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974804580] [2020-04-18 19:33:00,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:33:00,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:33:00,285 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:33:00,289 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:33:00,322 INFO L259 McrAutomatonBuilder]: Finished intersection with 214 states and 454 transitions. [2020-04-18 19:33:00,322 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:33:00,442 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 15 times. [2020-04-18 19:33:00,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:33:00,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2020-04-18 19:33:00,443 INFO L87 Difference]: Start difference. First operand 2441 states and 7644 transitions. Second operand 8 states. [2020-04-18 19:33:00,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:33:00,817 INFO L93 Difference]: Finished difference Result 2487 states and 7688 transitions. [2020-04-18 19:33:00,817 INFO L276 IsEmpty]: Start isEmpty. Operand 2487 states and 7688 transitions. [2020-04-18 19:33:00,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:33:00,822 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:33:00,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:33:00,822 INFO L82 PathProgramCache]: Analyzing trace with hash -577749880, now seen corresponding path program 4 times [2020-04-18 19:33:00,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:33:00,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522799650] [2020-04-18 19:33:00,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:33:00,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:33:00,928 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 19:33:00,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522799650] [2020-04-18 19:33:00,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:33:00,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:33:00,930 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:33:00,934 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:33:00,985 INFO L259 McrAutomatonBuilder]: Finished intersection with 245 states and 536 transitions. [2020-04-18 19:33:00,985 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:33:01,084 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 26 times. [2020-04-18 19:33:01,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:33:01,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1245, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 19:33:01,087 INFO L87 Difference]: Start difference. First operand 2487 states and 7688 transitions. Second operand 9 states. [2020-04-18 19:33:01,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:33:01,528 INFO L93 Difference]: Finished difference Result 4861 states and 14498 transitions. [2020-04-18 19:33:01,528 INFO L276 IsEmpty]: Start isEmpty. Operand 4861 states and 14498 transitions. [2020-04-18 19:33:01,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:33:01,539 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:33:01,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:33:01,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1615839712, now seen corresponding path program 5 times [2020-04-18 19:33:01,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:33:01,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532955882] [2020-04-18 19:33:01,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:33:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:33:01,635 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 19:33:01,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532955882] [2020-04-18 19:33:01,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:33:01,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:33:01,637 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:33:01,641 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:33:01,686 INFO L259 McrAutomatonBuilder]: Finished intersection with 293 states and 696 transitions. [2020-04-18 19:33:01,686 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:33:01,731 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 19:33:01,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:33:01,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=375, Invalid=2175, Unknown=0, NotChecked=0, Total=2550 [2020-04-18 19:33:01,733 INFO L87 Difference]: Start difference. First operand 4861 states and 14498 transitions. Second operand 7 states. [2020-04-18 19:33:01,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:33:01,992 INFO L93 Difference]: Finished difference Result 7394 states and 21561 transitions. [2020-04-18 19:33:01,993 INFO L276 IsEmpty]: Start isEmpty. Operand 7394 states and 21561 transitions. [2020-04-18 19:33:02,007 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:33:02,008 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1214061663] [2020-04-18 19:33:02,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:33:02,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:33:02,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1214061663] [2020-04-18 19:33:02,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-04-18 19:33:02,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:33:02,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 19:33:02,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=459, Invalid=2847, Unknown=0, NotChecked=0, Total=3306 [2020-04-18 19:33:02,011 INFO L87 Difference]: Start difference. First operand 704 states and 2004 transitions. Second operand 20 states. [2020-04-18 19:33:03,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:33:03,527 INFO L93 Difference]: Finished difference Result 1502 states and 4312 transitions. [2020-04-18 19:33:03,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-04-18 19:33:03,527 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 48 [2020-04-18 19:33:03,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:33:03,527 INFO L225 Difference]: With dead ends: 1502 [2020-04-18 19:33:03,528 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:33:03,530 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3151 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1082, Invalid=8230, Unknown=0, NotChecked=0, Total=9312 [2020-04-18 19:33:03,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:33:03,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:33:03,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:33:03,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:33:03,531 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2020-04-18 19:33:03,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:33:03,531 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:33:03,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-04-18 19:33:03,531 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:33:03,531 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:33:03,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:33:03 BasicIcfg [2020-04-18 19:33:03,537 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:33:03,539 INFO L168 Benchmark]: Toolchain (without parser) took 23027.15 ms. Allocated memory was 138.9 MB in the beginning and 748.7 MB in the end (delta: 609.7 MB). Free memory was 100.8 MB in the beginning and 499.2 MB in the end (delta: -398.4 MB). Peak memory consumption was 211.3 MB. Max. memory is 7.1 GB. [2020-04-18 19:33:03,541 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-18 19:33:03,541 INFO L168 Benchmark]: CACSL2BoogieTranslator took 763.44 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 98.8 MB in the beginning and 157.5 MB in the end (delta: -58.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-04-18 19:33:03,542 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.69 ms. Allocated memory is still 202.9 MB. Free memory was 157.5 MB in the beginning and 155.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 19:33:03,543 INFO L168 Benchmark]: Boogie Preprocessor took 28.53 ms. Allocated memory is still 202.9 MB. Free memory was 155.5 MB in the beginning and 154.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 19:33:03,544 INFO L168 Benchmark]: RCFGBuilder took 455.56 ms. Allocated memory is still 202.9 MB. Free memory was 154.1 MB in the beginning and 131.4 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-04-18 19:33:03,550 INFO L168 Benchmark]: TraceAbstraction took 21696.21 ms. Allocated memory was 202.9 MB in the beginning and 748.7 MB in the end (delta: 545.8 MB). Free memory was 131.4 MB in the beginning and 499.2 MB in the end (delta: -367.8 MB). Peak memory consumption was 178.0 MB. Max. memory is 7.1 GB. [2020-04-18 19:33:03,553 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 763.44 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 98.8 MB in the beginning and 157.5 MB in the end (delta: -58.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 62.69 ms. Allocated memory is still 202.9 MB. Free memory was 157.5 MB in the beginning and 155.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.53 ms. Allocated memory is still 202.9 MB. Free memory was 155.5 MB in the beginning and 154.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 455.56 ms. Allocated memory is still 202.9 MB. Free memory was 154.1 MB in the beginning and 131.4 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 21696.21 ms. Allocated memory was 202.9 MB in the beginning and 748.7 MB in the end (delta: 545.8 MB). Free memory was 131.4 MB in the beginning and 499.2 MB in the end (delta: -367.8 MB). Peak memory consumption was 178.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 21.5s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 7.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 954 SDtfs, 3678 SDslu, 6926 SDs, 0 SdLazy, 1881 SolverSat, 437 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1529 GetRequests, 1131 SyntacticMatches, 0 SemanticMatches, 398 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7813 ImplicationChecksByTransitivity, 8.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8472occurred 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: 1.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 5828 StatesRemovedByMinimization, 8 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...