/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 10:54:31,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 10:54:31,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 10:54:31,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 10:54:31,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 10:54:31,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 10:54:31,271 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 10:54:31,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 10:54:31,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 10:54:31,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 10:54:31,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 10:54:31,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 10:54:31,284 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 10:54:31,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 10:54:31,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 10:54:31,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 10:54:31,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 10:54:31,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 10:54:31,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 10:54:31,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 10:54:31,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 10:54:31,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 10:54:31,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 10:54:31,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 10:54:31,306 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 10:54:31,306 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 10:54:31,307 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 10:54:31,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 10:54:31,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 10:54:31,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 10:54:31,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 10:54:31,314 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 10:54:31,315 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 10:54:31,316 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 10:54:31,316 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 10:54:31,317 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 10:54:31,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 10:54:31,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 10:54:31,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 10:54:31,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 10:54:31,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 10:54:31,322 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf [2020-04-18 10:54:31,339 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 10:54:31,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 10:54:31,340 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 10:54:31,341 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 10:54:31,341 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 10:54:31,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 10:54:31,341 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 10:54:31,342 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 10:54:31,342 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 10:54:31,342 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 10:54:31,342 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 10:54:31,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 10:54:31,343 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 10:54:31,343 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 10:54:31,343 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 10:54:31,343 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 10:54:31,343 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 10:54:31,343 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 10:54:31,344 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 10:54:31,344 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 10:54:31,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 10:54:31,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 10:54:31,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 10:54:31,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 10:54:31,345 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 10:54:31,345 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 10:54:31,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 10:54:31,345 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 10:54:31,346 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 10:54:31,346 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 10:54:31,622 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 10:54:31,640 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 10:54:31,643 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 10:54:31,644 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 10:54:31,644 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 10:54:31,645 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i [2020-04-18 10:54:31,712 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6eddae6fa/c9a458e7544f4acd956201468886d2fa/FLAG5d84a97ce [2020-04-18 10:54:32,229 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 10:54:32,229 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i [2020-04-18 10:54:32,250 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6eddae6fa/c9a458e7544f4acd956201468886d2fa/FLAG5d84a97ce [2020-04-18 10:54:32,586 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6eddae6fa/c9a458e7544f4acd956201468886d2fa [2020-04-18 10:54:32,594 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 10:54:32,618 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 10:54:32,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 10:54:32,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 10:54:32,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 10:54:32,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:54:32" (1/1) ... [2020-04-18 10:54:32,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1006d2b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:54:32, skipping insertion in model container [2020-04-18 10:54:32,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:54:32" (1/1) ... [2020-04-18 10:54:32,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 10:54:32,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 10:54:33,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:54:33,141 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 10:54:33,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:54:33,276 INFO L208 MainTranslator]: Completed translation [2020-04-18 10:54:33,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:54:33 WrapperNode [2020-04-18 10:54:33,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 10:54:33,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 10:54:33,277 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 10:54:33,277 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 10:54:33,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:54:33" (1/1) ... [2020-04-18 10:54:33,299 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:54:33" (1/1) ... [2020-04-18 10:54:33,319 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 10:54:33,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 10:54:33,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 10:54:33,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 10:54:33,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:54:33" (1/1) ... [2020-04-18 10:54:33,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:54:33" (1/1) ... [2020-04-18 10:54:33,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:54:33" (1/1) ... [2020-04-18 10:54:33,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:54:33" (1/1) ... [2020-04-18 10:54:33,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:54:33" (1/1) ... [2020-04-18 10:54:33,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:54:33" (1/1) ... [2020-04-18 10:54:33,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:54:33" (1/1) ... [2020-04-18 10:54:33,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 10:54:33,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 10:54:33,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 10:54:33,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 10:54:33,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:54:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 10:54:33,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 10:54:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 10:54:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 10:54:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 10:54:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 10:54:33,420 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 10:54:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 10:54:33,421 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 10:54:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 10:54:33,421 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 10:54:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 10:54:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 10:54:33,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 10:54:33,423 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 10:54:33,799 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 10:54:33,799 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 10:54:33,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:54:33 BoogieIcfgContainer [2020-04-18 10:54:33,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 10:54:33,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 10:54:33,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 10:54:33,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 10:54:33,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 10:54:32" (1/3) ... [2020-04-18 10:54:33,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df4c230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:54:33, skipping insertion in model container [2020-04-18 10:54:33,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:54:33" (2/3) ... [2020-04-18 10:54:33,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df4c230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:54:33, skipping insertion in model container [2020-04-18 10:54:33,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:54:33" (3/3) ... [2020-04-18 10:54:33,811 INFO L109 eAbstractionObserver]: Analyzing ICFG safe013_tso.opt.i [2020-04-18 10:54:33,822 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 10:54:33,822 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 10:54:33,829 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 10:54:33,830 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 10:54:33,860 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:54:33,860 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:54:33,861 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:54:33,861 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:54:33,862 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:54:33,862 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:54:33,863 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:54:33,863 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:54:33,864 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:54:33,864 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:54:33,865 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:54:33,865 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:54:33,866 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:54:33,866 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:54:33,866 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:54:33,867 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:54:33,867 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:54:33,868 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:54:33,875 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:54:33,875 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:54:33,876 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:54:33,876 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:54:33,891 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:54:33,892 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:54:33,892 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:54:33,893 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:54:33,895 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:54:33,896 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:54:33,896 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:54:33,896 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:54:33,921 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 10:54:33,943 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 10:54:33,943 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 10:54:33,943 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 10:54:33,943 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 10:54:33,943 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 10:54:33,944 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 10:54:33,945 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 10:54:33,945 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 10:54:33,967 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 10:54:33,969 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 10:54:34,010 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 10:54:34,011 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:54:34,015 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 10:54:34,018 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 10:54:34,053 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 10:54:34,056 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:54:34,057 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 10:54:34,059 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 10:54:34,062 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 10:54:35,678 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-04-18 10:54:35,827 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 10:54:35,902 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2190 [2020-04-18 10:54:35,902 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-18 10:54:35,907 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-04-18 10:54:35,937 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 10:54:35,939 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 10:54:35,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:54:35,946 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:54:35,947 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:54:35,948 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:54:35,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:54:35,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1620259193, now seen corresponding path program 1 times [2020-04-18 10:54:35,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:54:35,961 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [388764812] [2020-04-18 10:54:35,979 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:54:35,991 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:54:35,993 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 10:54:35,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:54:35,994 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:54:35,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:54:35,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1620259193, now seen corresponding path program 2 times [2020-04-18 10:54:35,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:54:35,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130919493] [2020-04-18 10:54:35,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:54:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:54:36,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:54:36,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130919493] [2020-04-18 10:54:36,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:54:36,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 10:54:36,206 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:54:36,208 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:54:36,214 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:54:36,214 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:54:36,221 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:54:36,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:54:36,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:54:36,227 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 10:54:36,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:54:36,231 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 10:54:36,231 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 10:54:36,232 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:54:36,232 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [388764812] [2020-04-18 10:54:36,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:54:36,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 10:54:36,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [388764812] [2020-04-18 10:54:36,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 10:54:36,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:54:36,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:54:36,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:54:36,240 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 10:54:36,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:54:36,271 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-18 10:54:36,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 10:54:36,273 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 10:54:36,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:54:36,288 INFO L225 Difference]: With dead ends: 282 [2020-04-18 10:54:36,288 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 10:54:36,289 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:54:36,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 10:54:36,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 10:54:36,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 10:54:36,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-18 10:54:36,386 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-18 10:54:36,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:54:36,387 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-18 10:54:36,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 10:54:36,388 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-18 10:54:36,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:54:36,390 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:54:36,390 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:54:36,390 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:54:36,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:54:36,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1311571333, now seen corresponding path program 1 times [2020-04-18 10:54:36,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:54:36,391 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [967493656] [2020-04-18 10:54:36,392 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:54:36,393 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 13 transitions. [2020-04-18 10:54:36,393 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 10:54:36,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:54:36,394 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:54:36,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:54:36,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1311572743, now seen corresponding path program 2 times [2020-04-18 10:54:36,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:54:36,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565221229] [2020-04-18 10:54:36,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:54:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:54:36,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:54:36,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565221229] [2020-04-18 10:54:36,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:54:36,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:54:36,490 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:54:36,491 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:54:36,492 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 10:54:36,492 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:54:36,495 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:54:36,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:54:36,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:54:36,496 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-04-18 10:54:36,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:54:36,499 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-04-18 10:54:36,499 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-04-18 10:54:36,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:54:36,499 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:54:36,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:54:36,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1311571333, now seen corresponding path program 3 times [2020-04-18 10:54:36,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:54:36,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593818046] [2020-04-18 10:54:36,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:54:36,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:54:36,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:54:36,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593818046] [2020-04-18 10:54:36,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:54:36,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:54:36,570 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:54:36,570 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:54:36,575 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-04-18 10:54:36,575 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:54:36,600 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:54:36,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:54:36,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:54:36,601 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2020-04-18 10:54:36,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:54:36,628 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-04-18 10:54:36,628 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-04-18 10:54:36,628 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:54:36,628 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [967493656] [2020-04-18 10:54:36,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:54:36,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:54:36,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [967493656] [2020-04-18 10:54:36,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 10:54:36,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:54:36,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:54:36,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:54:36,632 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-04-18 10:54:36,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:54:36,656 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-04-18 10:54:36,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 10:54:36,657 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 10:54:36,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:54:36,659 INFO L225 Difference]: With dead ends: 242 [2020-04-18 10:54:36,660 INFO L226 Difference]: Without dead ends: 146 [2020-04-18 10:54:36,662 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:54:36,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-18 10:54:36,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-18 10:54:36,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-18 10:54:36,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-04-18 10:54:36,682 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-04-18 10:54:36,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:54:36,682 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-04-18 10:54:36,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 10:54:36,683 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-04-18 10:54:36,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:54:36,684 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:54:36,684 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:54:36,684 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:54:36,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:54:36,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1994932005, now seen corresponding path program 1 times [2020-04-18 10:54:36,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:54:36,685 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [706355838] [2020-04-18 10:54:36,686 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:54:36,687 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 47 transitions. [2020-04-18 10:54:36,687 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 10:54:36,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:54:36,688 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:54:36,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:54:36,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1994933415, now seen corresponding path program 2 times [2020-04-18 10:54:36,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:54:36,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804477334] [2020-04-18 10:54:36,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:54:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:54:36,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:54:36,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804477334] [2020-04-18 10:54:36,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:54:36,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:54:36,746 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:54:36,746 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:54:36,748 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 27 transitions. [2020-04-18 10:54:36,749 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:54:36,762 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:54:36,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:54:36,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:54:36,763 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-04-18 10:54:36,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:54:36,771 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 10:54:36,771 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 10:54:36,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:54:36,771 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:54:36,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:54:36,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1994932005, now seen corresponding path program 3 times [2020-04-18 10:54:36,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:54:36,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666885022] [2020-04-18 10:54:36,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:54:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:54:36,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:54:36,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666885022] [2020-04-18 10:54:36,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:54:36,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 10:54:36,859 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:54:36,860 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:54:36,862 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-04-18 10:54:36,862 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:54:36,871 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:54:36,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:54:36,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:54:36,871 INFO L87 Difference]: Start difference. First operand 31 states and 49 transitions. Second operand 3 states. [2020-04-18 10:54:36,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:54:36,872 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 10:54:36,872 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 10:54:36,873 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:54:36,873 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [706355838] [2020-04-18 10:54:36,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:54:36,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 10:54:36,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [706355838] [2020-04-18 10:54:36,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 10:54:36,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:54:36,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:54:36,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:54:36,875 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 4 states. [2020-04-18 10:54:36,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:54:36,890 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-04-18 10:54:36,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 10:54:36,895 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 10:54:36,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:54:36,897 INFO L225 Difference]: With dead ends: 144 [2020-04-18 10:54:36,897 INFO L226 Difference]: Without dead ends: 144 [2020-04-18 10:54:36,898 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:54:36,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-04-18 10:54:36,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-04-18 10:54:36,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-04-18 10:54:36,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-04-18 10:54:36,914 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-04-18 10:54:36,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:54:36,914 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-04-18 10:54:36,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 10:54:36,914 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-04-18 10:54:36,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:54:36,915 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:54:36,916 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:54:36,916 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:54:36,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:54:36,916 INFO L82 PathProgramCache]: Analyzing trace with hash 315672505, now seen corresponding path program 1 times [2020-04-18 10:54:36,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:54:36,916 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [892013912] [2020-04-18 10:54:36,917 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:54:36,919 INFO L259 McrAutomatonBuilder]: Finished intersection with 54 states and 118 transitions. [2020-04-18 10:54:36,919 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-04-18 10:54:36,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:54:36,920 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:54:36,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:54:36,921 INFO L82 PathProgramCache]: Analyzing trace with hash 315673915, now seen corresponding path program 2 times [2020-04-18 10:54:36,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:54:36,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365861136] [2020-04-18 10:54:36,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:54:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:54:36,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:54:36,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365861136] [2020-04-18 10:54:36,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:54:36,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:54:36,955 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:54:36,956 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:54:36,960 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 60 transitions. [2020-04-18 10:54:36,960 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:54:36,966 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:54:36,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:54:36,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:54:36,966 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 3 states. [2020-04-18 10:54:36,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:54:36,969 INFO L93 Difference]: Finished difference Result 60 states and 125 transitions. [2020-04-18 10:54:36,969 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 125 transitions. [2020-04-18 10:54:36,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:54:36,970 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:54:36,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:54:36,970 INFO L82 PathProgramCache]: Analyzing trace with hash 315672505, now seen corresponding path program 3 times [2020-04-18 10:54:36,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:54:36,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712915539] [2020-04-18 10:54:36,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:54:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:54:37,094 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 10:54:37,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712915539] [2020-04-18 10:54:37,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:54:37,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:54:37,098 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:54:37,100 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:54:37,104 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 63 transitions. [2020-04-18 10:54:37,104 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:54:37,122 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:54:37,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:54:37,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:54:37,123 INFO L87 Difference]: Start difference. First operand 60 states and 125 transitions. Second operand 4 states. [2020-04-18 10:54:37,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:54:37,135 INFO L93 Difference]: Finished difference Result 60 states and 125 transitions. [2020-04-18 10:54:37,135 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 125 transitions. [2020-04-18 10:54:37,135 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:54:37,136 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [892013912] [2020-04-18 10:54:37,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:54:37,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:54:37,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [892013912] [2020-04-18 10:54:37,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 10:54:37,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:54:37,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:54:37,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:54:37,139 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 5 states. [2020-04-18 10:54:37,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:54:37,223 INFO L93 Difference]: Finished difference Result 164 states and 374 transitions. [2020-04-18 10:54:37,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 10:54:37,224 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-18 10:54:37,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:54:37,229 INFO L225 Difference]: With dead ends: 164 [2020-04-18 10:54:37,230 INFO L226 Difference]: Without dead ends: 124 [2020-04-18 10:54:37,230 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 10:54:37,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-04-18 10:54:37,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-04-18 10:54:37,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-04-18 10:54:37,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 281 transitions. [2020-04-18 10:54:37,246 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 281 transitions. Word has length 12 [2020-04-18 10:54:37,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:54:37,246 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 281 transitions. [2020-04-18 10:54:37,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 10:54:37,246 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 281 transitions. [2020-04-18 10:54:37,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:54:37,248 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:54:37,248 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:54:37,248 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:54:37,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:54:37,249 INFO L82 PathProgramCache]: Analyzing trace with hash 852950147, now seen corresponding path program 1 times [2020-04-18 10:54:37,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:54:37,249 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1916795201] [2020-04-18 10:54:37,250 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:54:37,252 INFO L259 McrAutomatonBuilder]: Finished intersection with 70 states and 160 transitions. [2020-04-18 10:54:37,253 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2020-04-18 10:54:37,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:54:37,254 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:54:37,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:54:37,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1195942067, now seen corresponding path program 2 times [2020-04-18 10:54:37,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:54:37,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565771136] [2020-04-18 10:54:37,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:54:37,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:54:37,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:54:37,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565771136] [2020-04-18 10:54:37,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:54:37,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:54:37,305 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:54:37,307 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:54:37,312 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 67 transitions. [2020-04-18 10:54:37,312 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:54:37,323 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 10:54:37,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:54:37,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:54:37,324 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 3 states. [2020-04-18 10:54:37,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:54:37,331 INFO L93 Difference]: Finished difference Result 78 states and 170 transitions. [2020-04-18 10:54:37,331 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 170 transitions. [2020-04-18 10:54:37,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:54:37,332 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:54:37,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:54:37,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1195940657, now seen corresponding path program 3 times [2020-04-18 10:54:37,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:54:37,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413817584] [2020-04-18 10:54:37,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:54:37,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:54:37,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:54:37,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413817584] [2020-04-18 10:54:37,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:54:37,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:54:37,432 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:54:37,433 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:54:37,436 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 73 transitions. [2020-04-18 10:54:37,437 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:54:37,450 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:54:37,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:54:37,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:54:37,451 INFO L87 Difference]: Start difference. First operand 78 states and 170 transitions. Second operand 4 states. [2020-04-18 10:54:37,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:54:37,471 INFO L93 Difference]: Finished difference Result 88 states and 183 transitions. [2020-04-18 10:54:37,471 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 183 transitions. [2020-04-18 10:54:37,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:54:37,472 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:54:37,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:54:37,472 INFO L82 PathProgramCache]: Analyzing trace with hash 852950147, now seen corresponding path program 4 times [2020-04-18 10:54:37,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:54:37,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405971054] [2020-04-18 10:54:37,473 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:54:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:54:37,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:54:37,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405971054] [2020-04-18 10:54:37,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:54:37,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:54:37,534 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:54:37,535 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:54:37,540 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 71 transitions. [2020-04-18 10:54:37,540 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:54:37,588 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 10:54:37,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:54:37,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:54:37,588 INFO L87 Difference]: Start difference. First operand 88 states and 183 transitions. Second operand 6 states. [2020-04-18 10:54:37,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:54:37,613 INFO L93 Difference]: Finished difference Result 88 states and 183 transitions. [2020-04-18 10:54:37,613 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 183 transitions. [2020-04-18 10:54:37,613 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:54:37,614 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1916795201] [2020-04-18 10:54:37,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:54:37,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 10:54:37,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1916795201] [2020-04-18 10:54:37,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 10:54:37,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:54:37,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:54:37,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-04-18 10:54:37,615 INFO L87 Difference]: Start difference. First operand 124 states and 281 transitions. Second operand 7 states. [2020-04-18 10:54:37,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:54:37,721 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-04-18 10:54:37,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 10:54:37,722 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-04-18 10:54:37,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:54:37,723 INFO L225 Difference]: With dead ends: 122 [2020-04-18 10:54:37,723 INFO L226 Difference]: Without dead ends: 97 [2020-04-18 10:54:37,723 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-04-18 10:54:37,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-04-18 10:54:37,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-04-18 10:54:37,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-04-18 10:54:37,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-04-18 10:54:37,728 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 13 [2020-04-18 10:54:37,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:54:37,728 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-04-18 10:54:37,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 10:54:37,729 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-04-18 10:54:37,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:54:37,729 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:54:37,729 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:54:37,730 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:54:37,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:54:37,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1634628682, now seen corresponding path program 1 times [2020-04-18 10:54:37,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:54:37,730 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1045865173] [2020-04-18 10:54:37,731 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:54:37,732 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 122 transitions. [2020-04-18 10:54:37,733 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-04-18 10:54:37,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:54:37,733 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:54:37,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:54:37,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1584764212, now seen corresponding path program 2 times [2020-04-18 10:54:37,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:54:37,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932491501] [2020-04-18 10:54:37,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:54:37,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:54:37,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:54:37,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932491501] [2020-04-18 10:54:37,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:54:37,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:54:37,758 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:54:37,759 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:54:37,761 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 36 transitions. [2020-04-18 10:54:37,762 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:54:37,766 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 10:54:37,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:54:37,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:54:37,767 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 3 states. [2020-04-18 10:54:37,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:54:37,770 INFO L93 Difference]: Finished difference Result 72 states and 139 transitions. [2020-04-18 10:54:37,770 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 139 transitions. [2020-04-18 10:54:37,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:54:37,770 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:54:37,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:54:37,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1583351992, now seen corresponding path program 3 times [2020-04-18 10:54:37,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:54:37,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425221804] [2020-04-18 10:54:37,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:54:37,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:54:37,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:54:37,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425221804] [2020-04-18 10:54:37,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:54:37,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:54:37,810 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:54:37,811 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:54:37,814 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-04-18 10:54:37,814 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:54:37,821 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 10:54:37,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:54:37,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:54:37,822 INFO L87 Difference]: Start difference. First operand 72 states and 139 transitions. Second operand 3 states. [2020-04-18 10:54:37,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:54:37,828 INFO L93 Difference]: Finished difference Result 80 states and 149 transitions. [2020-04-18 10:54:37,828 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 149 transitions. [2020-04-18 10:54:37,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:54:37,829 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:54:37,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:54:37,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1583409202, now seen corresponding path program 4 times [2020-04-18 10:54:37,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:54:37,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49778691] [2020-04-18 10:54:37,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:54:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:54:37,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:54:37,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49778691] [2020-04-18 10:54:37,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:54:37,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:54:37,865 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:54:37,867 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:54:37,870 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-04-18 10:54:37,870 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:54:37,877 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:54:37,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:54:37,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:54:37,878 INFO L87 Difference]: Start difference. First operand 80 states and 149 transitions. Second operand 3 states. [2020-04-18 10:54:37,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:54:37,881 INFO L93 Difference]: Finished difference Result 80 states and 149 transitions. [2020-04-18 10:54:37,882 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 149 transitions. [2020-04-18 10:54:37,882 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:54:37,883 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1045865173] [2020-04-18 10:54:37,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:54:37,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:54:37,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1045865173] [2020-04-18 10:54:37,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 10:54:37,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:54:37,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:54:37,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:54:37,884 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 5 states. [2020-04-18 10:54:37,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:54:37,907 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-04-18 10:54:37,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 10:54:37,908 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-18 10:54:37,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:54:37,909 INFO L225 Difference]: With dead ends: 115 [2020-04-18 10:54:37,909 INFO L226 Difference]: Without dead ends: 98 [2020-04-18 10:54:37,909 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:54:37,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-04-18 10:54:37,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-04-18 10:54:37,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-04-18 10:54:37,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-04-18 10:54:37,917 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-04-18 10:54:37,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:54:37,919 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-04-18 10:54:37,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 10:54:37,919 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-04-18 10:54:37,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:54:37,920 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:54:37,920 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:54:37,921 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:54:37,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:54:37,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1887879687, now seen corresponding path program 1 times [2020-04-18 10:54:37,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:54:37,922 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1897816686] [2020-04-18 10:54:37,923 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:54:37,926 INFO L259 McrAutomatonBuilder]: Finished intersection with 138 states and 352 transitions. [2020-04-18 10:54:37,928 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states. [2020-04-18 10:54:37,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:54:37,930 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:54:37,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:54:37,930 INFO L82 PathProgramCache]: Analyzing trace with hash -2064095689, now seen corresponding path program 2 times [2020-04-18 10:54:37,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:54:37,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752355801] [2020-04-18 10:54:37,932 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:54:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:54:37,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:54:37,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752355801] [2020-04-18 10:54:37,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:54:37,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:54:37,962 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:54:37,964 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:54:37,970 INFO L259 McrAutomatonBuilder]: Finished intersection with 44 states and 75 transitions. [2020-04-18 10:54:37,970 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:54:37,975 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 10:54:37,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:54:37,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:54:37,978 INFO L87 Difference]: Start difference. First operand 138 states. Second operand 3 states. [2020-04-18 10:54:37,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:54:37,984 INFO L93 Difference]: Finished difference Result 154 states and 376 transitions. [2020-04-18 10:54:37,985 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 376 transitions. [2020-04-18 10:54:37,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:54:37,985 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:54:37,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:54:37,986 INFO L82 PathProgramCache]: Analyzing trace with hash -2064097099, now seen corresponding path program 3 times [2020-04-18 10:54:37,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:54:37,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937981869] [2020-04-18 10:54:37,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:54:38,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:54:38,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:54:38,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937981869] [2020-04-18 10:54:38,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:54:38,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:54:38,052 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:54:38,054 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:54:38,059 INFO L259 McrAutomatonBuilder]: Finished intersection with 44 states and 75 transitions. [2020-04-18 10:54:38,059 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:54:38,099 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:54:38,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:54:38,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:54:38,101 INFO L87 Difference]: Start difference. First operand 154 states and 376 transitions. Second operand 6 states. [2020-04-18 10:54:38,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:54:38,162 INFO L93 Difference]: Finished difference Result 159 states and 380 transitions. [2020-04-18 10:54:38,162 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 380 transitions. [2020-04-18 10:54:38,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:54:38,164 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:54:38,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:54:38,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1887879687, now seen corresponding path program 4 times [2020-04-18 10:54:38,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:54:38,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722008728] [2020-04-18 10:54:38,165 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:54:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:54:38,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:54:38,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722008728] [2020-04-18 10:54:38,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:54:38,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:54:38,249 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:54:38,250 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:54:38,255 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 73 transitions. [2020-04-18 10:54:38,255 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:54:38,306 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 10:54:38,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 10:54:38,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 10:54:38,307 INFO L87 Difference]: Start difference. First operand 159 states and 380 transitions. Second operand 8 states. [2020-04-18 10:54:38,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:54:38,362 INFO L93 Difference]: Finished difference Result 159 states and 380 transitions. [2020-04-18 10:54:38,363 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 380 transitions. [2020-04-18 10:54:38,363 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:54:38,364 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1897816686] [2020-04-18 10:54:38,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:54:38,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 10:54:38,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1897816686] [2020-04-18 10:54:38,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 10:54:38,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:54:38,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 10:54:38,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-04-18 10:54:38,365 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 9 states. [2020-04-18 10:54:38,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:54:38,458 INFO L93 Difference]: Finished difference Result 92 states and 183 transitions. [2020-04-18 10:54:38,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 10:54:38,458 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-04-18 10:54:38,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:54:38,459 INFO L225 Difference]: With dead ends: 92 [2020-04-18 10:54:38,459 INFO L226 Difference]: Without dead ends: 36 [2020-04-18 10:54:38,459 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-04-18 10:54:38,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-18 10:54:38,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-18 10:54:38,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-18 10:54:38,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-04-18 10:54:38,461 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-04-18 10:54:38,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:54:38,462 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-04-18 10:54:38,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 10:54:38,462 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-04-18 10:54:38,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:54:38,463 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:54:38,463 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:54:38,464 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:54:38,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:54:38,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1759545272, now seen corresponding path program 1 times [2020-04-18 10:54:38,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:54:38,466 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [631521735] [2020-04-18 10:54:38,467 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:54:38,474 INFO L259 McrAutomatonBuilder]: Finished intersection with 234 states and 656 transitions. [2020-04-18 10:54:38,476 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-18 10:54:38,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:54:38,477 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:54:38,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:54:38,477 INFO L82 PathProgramCache]: Analyzing trace with hash 678938788, now seen corresponding path program 2 times [2020-04-18 10:54:38,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:54:38,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986493776] [2020-04-18 10:54:38,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:54:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:54:38,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:54:38,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986493776] [2020-04-18 10:54:38,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:54:38,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:54:38,502 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:54:38,503 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:54:38,507 INFO L259 McrAutomatonBuilder]: Finished intersection with 47 states and 79 transitions. [2020-04-18 10:54:38,508 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:54:38,512 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 10:54:38,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:54:38,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:54:38,513 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-04-18 10:54:38,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:54:38,517 INFO L93 Difference]: Finished difference Result 282 states and 760 transitions. [2020-04-18 10:54:38,518 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 760 transitions. [2020-04-18 10:54:38,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:54:38,519 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:54:38,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:54:38,519 INFO L82 PathProgramCache]: Analyzing trace with hash 677526568, now seen corresponding path program 3 times [2020-04-18 10:54:38,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:54:38,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488793093] [2020-04-18 10:54:38,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:54:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:54:38,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:54:38,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488793093] [2020-04-18 10:54:38,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:54:38,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:54:38,549 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:54:38,550 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:54:38,554 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 85 transitions. [2020-04-18 10:54:38,554 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:54:38,567 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 10:54:38,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:54:38,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:54:38,569 INFO L87 Difference]: Start difference. First operand 282 states and 760 transitions. Second operand 3 states. [2020-04-18 10:54:38,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:54:38,580 INFO L93 Difference]: Finished difference Result 410 states and 1056 transitions. [2020-04-18 10:54:38,581 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 1056 transitions. [2020-04-18 10:54:38,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:54:38,585 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:54:38,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:54:38,585 INFO L82 PathProgramCache]: Analyzing trace with hash 677583778, now seen corresponding path program 4 times [2020-04-18 10:54:38,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:54:38,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554417223] [2020-04-18 10:54:38,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:54:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:54:38,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:54:38,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554417223] [2020-04-18 10:54:38,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:54:38,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:54:38,687 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:54:38,689 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:54:38,695 INFO L259 McrAutomatonBuilder]: Finished intersection with 47 states and 79 transitions. [2020-04-18 10:54:38,695 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:54:38,751 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:54:38,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:54:38,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:54:38,753 INFO L87 Difference]: Start difference. First operand 410 states and 1056 transitions. Second operand 6 states. [2020-04-18 10:54:38,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:54:38,890 INFO L93 Difference]: Finished difference Result 449 states and 1106 transitions. [2020-04-18 10:54:38,890 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 1106 transitions. [2020-04-18 10:54:38,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:54:38,892 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:54:38,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:54:38,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1776185460, now seen corresponding path program 5 times [2020-04-18 10:54:38,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:54:38,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810247022] [2020-04-18 10:54:38,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:54:38,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:54:38,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:54:38,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810247022] [2020-04-18 10:54:38,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:54:38,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 10:54:38,972 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:54:38,974 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:54:38,978 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 75 transitions. [2020-04-18 10:54:38,978 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:54:39,029 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 10:54:39,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 10:54:39,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-04-18 10:54:39,030 INFO L87 Difference]: Start difference. First operand 449 states and 1106 transitions. Second operand 8 states. [2020-04-18 10:54:39,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:54:39,150 INFO L93 Difference]: Finished difference Result 453 states and 1108 transitions. [2020-04-18 10:54:39,150 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 1108 transitions. [2020-04-18 10:54:39,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:54:39,151 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 10:54:39,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:54:39,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1759545272, now seen corresponding path program 6 times [2020-04-18 10:54:39,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:54:39,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036883201] [2020-04-18 10:54:39,152 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:54:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:54:39,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:54:39,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036883201] [2020-04-18 10:54:39,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:54:39,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:54:39,182 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:54:39,184 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:54:39,189 INFO L259 McrAutomatonBuilder]: Finished intersection with 59 states and 108 transitions. [2020-04-18 10:54:39,190 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:54:39,236 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 10:54:39,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:54:39,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-04-18 10:54:39,237 INFO L87 Difference]: Start difference. First operand 453 states and 1108 transitions. Second operand 5 states. [2020-04-18 10:54:39,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:54:39,264 INFO L93 Difference]: Finished difference Result 718 states and 1635 transitions. [2020-04-18 10:54:39,264 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1635 transitions. [2020-04-18 10:54:39,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:54:39,267 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 10:54:39,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:54:39,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1907140316, now seen corresponding path program 7 times [2020-04-18 10:54:39,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:54:39,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871682441] [2020-04-18 10:54:39,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:54:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:54:39,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:54:39,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871682441] [2020-04-18 10:54:39,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:54:39,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:54:39,297 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:54:39,298 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:54:39,303 INFO L259 McrAutomatonBuilder]: Finished intersection with 49 states and 76 transitions. [2020-04-18 10:54:39,303 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:54:39,318 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:54:39,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:54:39,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-04-18 10:54:39,318 INFO L87 Difference]: Start difference. First operand 718 states and 1635 transitions. Second operand 4 states. [2020-04-18 10:54:39,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:54:39,337 INFO L93 Difference]: Finished difference Result 962 states and 2125 transitions. [2020-04-18 10:54:39,338 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 2125 transitions. [2020-04-18 10:54:39,340 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:54:39,340 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [631521735] [2020-04-18 10:54:39,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:54:39,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:54:39,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [631521735] [2020-04-18 10:54:39,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 10:54:39,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:54:39,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 10:54:39,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-04-18 10:54:39,342 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 14 states. [2020-04-18 10:54:39,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:54:39,557 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-04-18 10:54:39,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 10:54:39,558 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-04-18 10:54:39,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:54:39,558 INFO L225 Difference]: With dead ends: 35 [2020-04-18 10:54:39,558 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 10:54:39,559 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=219, Invalid=773, Unknown=0, NotChecked=0, Total=992 [2020-04-18 10:54:39,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 10:54:39,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 10:54:39,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 10:54:39,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 10:54:39,560 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 10:54:39,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:54:39,560 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 10:54:39,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 10:54:39,560 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 10:54:39,560 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:54:39,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 10:54:39 BasicIcfg [2020-04-18 10:54:39,564 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 10:54:39,566 INFO L168 Benchmark]: Toolchain (without parser) took 6970.60 ms. Allocated memory was 138.9 MB in the beginning and 284.7 MB in the end (delta: 145.8 MB). Free memory was 100.8 MB in the beginning and 136.3 MB in the end (delta: -35.5 MB). Peak memory consumption was 110.3 MB. Max. memory is 7.1 GB. [2020-04-18 10:54:39,566 INFO L168 Benchmark]: CDTParser took 1.37 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 10:54:39,567 INFO L168 Benchmark]: CACSL2BoogieTranslator took 657.95 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 98.9 MB in the beginning and 158.9 MB in the end (delta: -60.0 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-04-18 10:54:39,568 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.14 ms. Allocated memory is still 202.4 MB. Free memory was 158.9 MB in the beginning and 156.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 10:54:39,568 INFO L168 Benchmark]: Boogie Preprocessor took 26.37 ms. Allocated memory is still 202.4 MB. Free memory was 156.9 MB in the beginning and 155.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 10:54:39,569 INFO L168 Benchmark]: RCFGBuilder took 457.31 ms. Allocated memory is still 202.4 MB. Free memory was 155.5 MB in the beginning and 133.5 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-04-18 10:54:39,569 INFO L168 Benchmark]: TraceAbstraction took 5759.67 ms. Allocated memory was 202.4 MB in the beginning and 284.7 MB in the end (delta: 82.3 MB). Free memory was 132.9 MB in the beginning and 136.3 MB in the end (delta: -3.4 MB). Peak memory consumption was 78.9 MB. Max. memory is 7.1 GB. [2020-04-18 10:54:39,572 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.37 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 657.95 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 98.9 MB in the beginning and 158.9 MB in the end (delta: -60.0 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 42.14 ms. Allocated memory is still 202.4 MB. Free memory was 158.9 MB in the beginning and 156.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.37 ms. Allocated memory is still 202.4 MB. Free memory was 156.9 MB in the beginning and 155.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 457.31 ms. Allocated memory is still 202.4 MB. Free memory was 155.5 MB in the beginning and 133.5 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5759.67 ms. Allocated memory was 202.4 MB in the beginning and 284.7 MB in the end (delta: 82.3 MB). Free memory was 132.9 MB in the beginning and 136.3 MB in the end (delta: -3.4 MB). Peak memory consumption was 78.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 673 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2190 CheckedPairsTotal, 58 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 140 SDtfs, 207 SDslu, 284 SDs, 0 SdLazy, 221 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 382 GetRequests, 307 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...