/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/safe037_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:27:51,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:27:51,168 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:27:51,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:27:51,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:27:51,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:27:51,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:27:51,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:27:51,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:27:51,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:27:51,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:27:51,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:27:51,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:27:51,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:27:51,200 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:27:51,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:27:51,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:27:51,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:27:51,208 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:27:51,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:27:51,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:27:51,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:27:51,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:27:51,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:27:51,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:27:51,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:27:51,223 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:27:51,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:27:51,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:27:51,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:27:51,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:27:51,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:27:51,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:27:51,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:27:51,237 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:27:51,237 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:27:51,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:27:51,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:27:51,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:27:51,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:27:51,244 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:27:51,245 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 11:27:51,273 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:27:51,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:27:51,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:27:51,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:27:51,275 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:27:51,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:27:51,276 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:27:51,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:27:51,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:27:51,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:27:51,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:27:51,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:27:51,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:27:51,277 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:27:51,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:27:51,277 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:27:51,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:27:51,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:27:51,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:27:51,278 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:27:51,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:27:51,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:27:51,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:27:51,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:27:51,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:27:51,279 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:27:51,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:27:51,280 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:27:51,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:27:51,280 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:27:51,550 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:27:51,571 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:27:51,575 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:27:51,576 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:27:51,577 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:27:51,578 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037_tso.opt.i [2020-04-18 11:27:51,643 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0a289a14/b40b5265f7394c5886b990afbdbce1c8/FLAG73a761ac2 [2020-04-18 11:27:52,167 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:27:52,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_tso.opt.i [2020-04-18 11:27:52,188 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0a289a14/b40b5265f7394c5886b990afbdbce1c8/FLAG73a761ac2 [2020-04-18 11:27:52,455 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0a289a14/b40b5265f7394c5886b990afbdbce1c8 [2020-04-18 11:27:52,466 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:27:52,488 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:27:52,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:27:52,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:27:52,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:27:52,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:27:52" (1/1) ... [2020-04-18 11:27:52,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@222969c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:52, skipping insertion in model container [2020-04-18 11:27:52,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:27:52" (1/1) ... [2020-04-18 11:27:52,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:27:52,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:27:53,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:27:53,121 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:27:53,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:27:53,257 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:27:53,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:53 WrapperNode [2020-04-18 11:27:53,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:27:53,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:27:53,258 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:27:53,258 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:27:53,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:53" (1/1) ... [2020-04-18 11:27:53,286 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:53" (1/1) ... [2020-04-18 11:27:53,310 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:27:53,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:27:53,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:27:53,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:27:53,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:53" (1/1) ... [2020-04-18 11:27:53,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:53" (1/1) ... [2020-04-18 11:27:53,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:53" (1/1) ... [2020-04-18 11:27:53,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:53" (1/1) ... [2020-04-18 11:27:53,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:53" (1/1) ... [2020-04-18 11:27:53,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:53" (1/1) ... [2020-04-18 11:27:53,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:53" (1/1) ... [2020-04-18 11:27:53,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:27:53,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:27:53,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:27:53,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:27:53,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:53" (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 11:27:53,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:27:53,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 11:27:53,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:27:53,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:27:53,395 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 11:27:53,395 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 11:27:53,395 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 11:27:53,395 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 11:27:53,396 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 11:27:53,396 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 11:27:53,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 11:27:53,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:27:53,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:27:53,398 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 11:27:53,760 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:27:53,760 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 11:27:53,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:27:53 BoogieIcfgContainer [2020-04-18 11:27:53,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:27:53,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:27:53,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:27:53,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:27:53,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:27:52" (1/3) ... [2020-04-18 11:27:53,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce4cf28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:27:53, skipping insertion in model container [2020-04-18 11:27:53,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:53" (2/3) ... [2020-04-18 11:27:53,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce4cf28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:27:53, skipping insertion in model container [2020-04-18 11:27:53,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:27:53" (3/3) ... [2020-04-18 11:27:53,773 INFO L109 eAbstractionObserver]: Analyzing ICFG safe037_tso.opt.i [2020-04-18 11:27:53,782 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:27:53,783 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:27:53,789 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:27:53,790 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:27:53,816 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:53,817 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:53,817 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:53,817 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:53,818 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:53,818 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:53,819 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:53,819 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:53,819 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:53,819 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:53,820 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:53,820 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:53,821 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:53,821 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:53,821 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:53,821 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:53,822 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:53,822 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:53,826 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:53,826 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:53,827 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:53,827 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:53,840 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:53,840 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:53,841 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:53,841 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:53,851 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:53,851 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:53,852 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:53,852 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:53,870 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 11:27:53,893 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:27:53,894 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:27:53,894 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:27:53,894 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:27:53,894 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:27:53,895 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:27:53,895 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:27:53,896 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:27:53,921 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-04-18 11:27:53,923 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 11:27:53,972 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 11:27:53,972 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:27:53,977 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 11:27:53,980 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 11:27:54,000 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 11:27:54,000 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:27:54,001 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 11:27:54,003 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 11:27:54,004 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:27:55,561 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-04-18 11:27:55,680 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2315 [2020-04-18 11:27:55,681 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-18 11:27:55,684 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-18 11:27:55,715 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-18 11:27:55,718 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-18 11:27:55,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:27:55,726 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:55,727 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:27:55,727 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:55,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:55,734 INFO L82 PathProgramCache]: Analyzing trace with hash 385809968, now seen corresponding path program 1 times [2020-04-18 11:27:55,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:55,742 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [730755367] [2020-04-18 11:27:55,758 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:55,768 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:27:55,769 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 11:27:55,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:27:55,770 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:55,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:55,771 INFO L82 PathProgramCache]: Analyzing trace with hash 385809968, now seen corresponding path program 2 times [2020-04-18 11:27:55,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:55,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895455998] [2020-04-18 11:27:55,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:55,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:55,935 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 11:27:55,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895455998] [2020-04-18 11:27:55,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:55,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:27:55,939 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:55,940 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:55,943 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:27:55,943 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:55,947 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:27:55,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 11:27:55,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:27:55,953 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 2 states. [2020-04-18 11:27:55,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:55,957 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 11:27:55,958 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 11:27:55,958 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:55,959 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [730755367] [2020-04-18 11:27:55,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:55,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:27:55,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [730755367] [2020-04-18 11:27:55,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 11:27:55,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:55,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 11:27:55,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:27:55,967 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-18 11:27:55,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:55,988 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-18 11:27:55,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 11:27:55,990 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-18 11:27:55,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:56,010 INFO L225 Difference]: With dead ends: 362 [2020-04-18 11:27:56,011 INFO L226 Difference]: Without dead ends: 298 [2020-04-18 11:27:56,013 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:27:56,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-18 11:27:56,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-18 11:27:56,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-18 11:27:56,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-18 11:27:56,099 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-18 11:27:56,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:56,102 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-18 11:27:56,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 11:27:56,103 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-18 11:27:56,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:27:56,106 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:56,107 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:27:56,107 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:56,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:56,107 INFO L82 PathProgramCache]: Analyzing trace with hash -924796273, now seen corresponding path program 1 times [2020-04-18 11:27:56,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:56,108 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [323701548] [2020-04-18 11:27:56,109 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:56,111 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:27:56,111 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 11:27:56,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:27:56,112 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:56,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:56,112 INFO L82 PathProgramCache]: Analyzing trace with hash -924796273, now seen corresponding path program 2 times [2020-04-18 11:27:56,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:56,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912283635] [2020-04-18 11:27:56,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:56,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:56,252 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 11:27:56,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912283635] [2020-04-18 11:27:56,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:56,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:27:56,253 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:56,254 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:56,256 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:27:56,256 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:56,260 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:27:56,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:27:56,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:27:56,261 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2020-04-18 11:27:56,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:56,262 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-04-18 11:27:56,262 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-04-18 11:27:56,264 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:56,265 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [323701548] [2020-04-18 11:27:56,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:56,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:27:56,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [323701548] [2020-04-18 11:27:56,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:27:56,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:56,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:27:56,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:27:56,267 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-04-18 11:27:56,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:56,301 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-04-18 11:27:56,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:27:56,301 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-18 11:27:56,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:56,304 INFO L225 Difference]: With dead ends: 217 [2020-04-18 11:27:56,305 INFO L226 Difference]: Without dead ends: 217 [2020-04-18 11:27:56,306 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:27:56,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-04-18 11:27:56,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-04-18 11:27:56,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-04-18 11:27:56,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-04-18 11:27:56,345 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-04-18 11:27:56,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:56,346 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-04-18 11:27:56,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:27:56,346 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-04-18 11:27:56,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:27:56,349 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:56,350 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:27:56,350 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:56,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:56,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1123394358, now seen corresponding path program 1 times [2020-04-18 11:27:56,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:56,351 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1172493030] [2020-04-18 11:27:56,351 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:56,354 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 54 transitions. [2020-04-18 11:27:56,355 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-04-18 11:27:56,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:27:56,356 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:56,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:56,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1123394358, now seen corresponding path program 2 times [2020-04-18 11:27:56,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:56,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151524201] [2020-04-18 11:27:56,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:56,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:56,475 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 11:27:56,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151524201] [2020-04-18 11:27:56,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:56,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:27:56,476 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:56,477 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:56,479 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 36 transitions. [2020-04-18 11:27:56,480 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:56,488 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:27:56,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:27:56,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:27:56,489 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2020-04-18 11:27:56,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:56,497 INFO L93 Difference]: Finished difference Result 34 states and 54 transitions. [2020-04-18 11:27:56,497 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 54 transitions. [2020-04-18 11:27:56,498 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:56,498 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1172493030] [2020-04-18 11:27:56,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:56,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:27:56,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1172493030] [2020-04-18 11:27:56,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:27:56,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:56,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:27:56,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:27:56,500 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 4 states. [2020-04-18 11:27:56,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:56,524 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-04-18 11:27:56,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 11:27:56,525 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 11:27:56,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:56,526 INFO L225 Difference]: With dead ends: 136 [2020-04-18 11:27:56,526 INFO L226 Difference]: Without dead ends: 136 [2020-04-18 11:27:56,527 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:27:56,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-04-18 11:27:56,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-04-18 11:27:56,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-04-18 11:27:56,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-04-18 11:27:56,533 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-04-18 11:27:56,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:56,534 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-04-18 11:27:56,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:27:56,534 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-04-18 11:27:56,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:27:56,535 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:56,535 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:27:56,536 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:56,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:56,536 INFO L82 PathProgramCache]: Analyzing trace with hash -104701845, now seen corresponding path program 1 times [2020-04-18 11:27:56,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:56,537 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1404685209] [2020-04-18 11:27:56,537 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:56,540 INFO L259 McrAutomatonBuilder]: Finished intersection with 82 states and 174 transitions. [2020-04-18 11:27:56,541 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2020-04-18 11:27:56,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:27:56,542 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:56,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:56,542 INFO L82 PathProgramCache]: Analyzing trace with hash -104701845, now seen corresponding path program 2 times [2020-04-18 11:27:56,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:56,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163322691] [2020-04-18 11:27:56,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:56,606 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 11:27:56,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163322691] [2020-04-18 11:27:56,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:56,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:27:56,608 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:56,610 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:56,614 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 49 transitions. [2020-04-18 11:27:56,614 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:56,626 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:27:56,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:27:56,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:27:56,627 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 5 states. [2020-04-18 11:27:56,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:56,641 INFO L93 Difference]: Finished difference Result 82 states and 174 transitions. [2020-04-18 11:27:56,641 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 174 transitions. [2020-04-18 11:27:56,642 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:56,642 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1404685209] [2020-04-18 11:27:56,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:56,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:27:56,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1404685209] [2020-04-18 11:27:56,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:27:56,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:56,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:27:56,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:27:56,644 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 5 states. [2020-04-18 11:27:56,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:56,670 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-04-18 11:27:56,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 11:27:56,671 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-18 11:27:56,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:56,672 INFO L225 Difference]: With dead ends: 109 [2020-04-18 11:27:56,672 INFO L226 Difference]: Without dead ends: 109 [2020-04-18 11:27:56,672 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:27:56,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-04-18 11:27:56,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-04-18 11:27:56,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-04-18 11:27:56,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-04-18 11:27:56,677 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-04-18 11:27:56,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:56,677 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-04-18 11:27:56,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:27:56,677 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-04-18 11:27:56,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:27:56,678 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:56,679 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:27:56,679 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:56,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:56,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1786856379, now seen corresponding path program 1 times [2020-04-18 11:27:56,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:56,680 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1114231902] [2020-04-18 11:27:56,681 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:56,689 INFO L259 McrAutomatonBuilder]: Finished intersection with 298 states and 864 transitions. [2020-04-18 11:27:56,693 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 11:27:56,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:27:56,695 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:56,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:56,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1786856379, now seen corresponding path program 2 times [2020-04-18 11:27:56,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:56,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891503233] [2020-04-18 11:27:56,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:56,810 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 11:27:56,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891503233] [2020-04-18 11:27:56,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:56,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:27:56,811 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:56,814 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:56,822 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 85 transitions. [2020-04-18 11:27:56,823 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:56,849 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:27:56,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:27:56,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:27:56,849 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 5 states. [2020-04-18 11:27:56,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:56,904 INFO L93 Difference]: Finished difference Result 442 states and 1236 transitions. [2020-04-18 11:27:56,904 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1236 transitions. [2020-04-18 11:27:56,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:27:56,906 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:27:56,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:56,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1847699439, now seen corresponding path program 3 times [2020-04-18 11:27:56,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:56,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440871396] [2020-04-18 11:27:56,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:57,014 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 11:27:57,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440871396] [2020-04-18 11:27:57,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:57,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:27:57,015 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:57,016 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:57,022 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 86 transitions. [2020-04-18 11:27:57,022 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:57,051 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:27:57,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:27:57,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:27:57,052 INFO L87 Difference]: Start difference. First operand 442 states and 1236 transitions. Second operand 5 states. [2020-04-18 11:27:57,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:57,097 INFO L93 Difference]: Finished difference Result 448 states and 1240 transitions. [2020-04-18 11:27:57,097 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 1240 transitions. [2020-04-18 11:27:57,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:27:57,099 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:27:57,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:57,099 INFO L82 PathProgramCache]: Analyzing trace with hash -739037833, now seen corresponding path program 4 times [2020-04-18 11:27:57,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:57,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519840304] [2020-04-18 11:27:57,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:57,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:57,215 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 11:27:57,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519840304] [2020-04-18 11:27:57,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:57,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:27:57,216 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:57,218 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:57,228 INFO L259 McrAutomatonBuilder]: Finished intersection with 47 states and 78 transitions. [2020-04-18 11:27:57,229 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:57,254 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:27:57,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:27:57,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-04-18 11:27:57,255 INFO L87 Difference]: Start difference. First operand 448 states and 1240 transitions. Second operand 5 states. [2020-04-18 11:27:57,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:57,303 INFO L93 Difference]: Finished difference Result 718 states and 1888 transitions. [2020-04-18 11:27:57,303 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1888 transitions. [2020-04-18 11:27:57,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:27:57,305 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:27:57,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:57,306 INFO L82 PathProgramCache]: Analyzing trace with hash -845563335, now seen corresponding path program 5 times [2020-04-18 11:27:57,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:57,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839565903] [2020-04-18 11:27:57,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:57,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:57,376 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 11:27:57,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839565903] [2020-04-18 11:27:57,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:57,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:27:57,378 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:57,379 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:57,383 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 38 transitions. [2020-04-18 11:27:57,384 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:57,470 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:27:57,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:27:57,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-04-18 11:27:57,471 INFO L87 Difference]: Start difference. First operand 718 states and 1888 transitions. Second operand 6 states. [2020-04-18 11:27:57,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:57,545 INFO L93 Difference]: Finished difference Result 1235 states and 3060 transitions. [2020-04-18 11:27:57,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 3060 transitions. [2020-04-18 11:27:57,549 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:57,549 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1114231902] [2020-04-18 11:27:57,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:57,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:27:57,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1114231902] [2020-04-18 11:27:57,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 11:27:57,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:57,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:27:57,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-04-18 11:27:57,551 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 13 states. [2020-04-18 11:27:59,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:59,033 INFO L93 Difference]: Finished difference Result 240 states and 478 transitions. [2020-04-18 11:27:59,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-04-18 11:27:59,033 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2020-04-18 11:27:59,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:59,034 INFO L225 Difference]: With dead ends: 240 [2020-04-18 11:27:59,035 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:27:59,037 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2124 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1248, Invalid=5232, Unknown=0, NotChecked=0, Total=6480 [2020-04-18 11:27:59,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:27:59,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:27:59,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:27:59,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:27:59,038 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-04-18 11:27:59,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:59,039 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:27:59,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 11:27:59,039 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:27:59,039 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:59,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:27:59 BasicIcfg [2020-04-18 11:27:59,043 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:27:59,045 INFO L168 Benchmark]: Toolchain (without parser) took 6576.98 ms. Allocated memory was 138.4 MB in the beginning and 285.7 MB in the end (delta: 147.3 MB). Free memory was 100.8 MB in the beginning and 90.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 157.6 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:59,046 INFO L168 Benchmark]: CDTParser took 1.06 ms. Allocated memory is still 138.4 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 11:27:59,047 INFO L168 Benchmark]: CACSL2BoogieTranslator took 767.96 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 98.9 MB in the beginning and 160.2 MB in the end (delta: -61.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:59,048 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.39 ms. Allocated memory is still 203.4 MB. Free memory was 160.2 MB in the beginning and 158.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:59,049 INFO L168 Benchmark]: Boogie Preprocessor took 26.44 ms. Allocated memory is still 203.4 MB. Free memory was 158.2 MB in the beginning and 156.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:59,049 INFO L168 Benchmark]: RCFGBuilder took 427.35 ms. Allocated memory is still 203.4 MB. Free memory was 156.9 MB in the beginning and 134.5 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:59,050 INFO L168 Benchmark]: TraceAbstraction took 5277.33 ms. Allocated memory was 203.4 MB in the beginning and 285.7 MB in the end (delta: 82.3 MB). Free memory was 133.9 MB in the beginning and 90.5 MB in the end (delta: 43.3 MB). Peak memory consumption was 125.7 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:59,055 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.06 ms. Allocated memory is still 138.4 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 767.96 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 98.9 MB in the beginning and 160.2 MB in the end (delta: -61.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 52.39 ms. Allocated memory is still 203.4 MB. Free memory was 160.2 MB in the beginning and 158.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.44 ms. Allocated memory is still 203.4 MB. Free memory was 158.2 MB in the beginning and 156.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 427.35 ms. Allocated memory is still 203.4 MB. Free memory was 156.9 MB in the beginning and 134.5 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5277.33 ms. Allocated memory was 203.4 MB in the beginning and 285.7 MB in the end (delta: 82.3 MB). Free memory was 133.9 MB in the beginning and 90.5 MB in the end (delta: 43.3 MB). Peak memory consumption was 125.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 79 ProgramPointsBefore, 32 ProgramPointsAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 663 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2315 CheckedPairsTotal, 57 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, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.1s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 106 SDtfs, 192 SDslu, 293 SDs, 0 SdLazy, 349 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 236 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2124 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...