/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-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe037_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:45:05,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:45:05,241 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:45:05,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:45:05,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:45:05,264 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:45:05,266 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:45:05,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:45:05,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:45:05,283 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:45:05,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:45:05,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:45:05,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:45:05,289 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:45:05,291 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:45:05,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:45:05,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:45:05,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:45:05,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:45:05,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:45:05,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:45:05,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:45:05,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:45:05,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:45:05,315 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:45:05,315 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:45:05,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:45:05,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:45:05,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:45:05,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:45:05,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:45:05,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:45:05,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:45:05,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:45:05,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:45:05,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:45:05,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:45:05,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:45:05,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:45:05,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:45:05,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:45:05,329 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-VariableLbe-McrStrategy.epf [2020-04-18 15:45:05,366 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:45:05,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:45:05,368 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:45:05,368 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:45:05,368 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:45:05,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:45:05,369 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:45:05,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:45:05,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:45:05,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:45:05,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:45:05,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:45:05,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:45:05,371 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:45:05,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:45:05,372 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:45:05,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:45:05,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:45:05,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:45:05,373 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:45:05,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:45:05,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:45:05,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:45:05,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:45:05,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:45:05,374 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:45:05,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:45:05,375 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:45:05,375 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:45:05,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:45:05,375 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:45:05,689 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:45:05,712 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:45:05,716 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:45:05,718 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:45:05,719 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:45:05,721 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037_pso.opt.i [2020-04-18 15:45:05,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abcb7b485/d8338cdde8194fa0821de7080a68ea69/FLAG67b60fb61 [2020-04-18 15:45:06,313 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:45:06,314 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_pso.opt.i [2020-04-18 15:45:06,328 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abcb7b485/d8338cdde8194fa0821de7080a68ea69/FLAG67b60fb61 [2020-04-18 15:45:06,615 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abcb7b485/d8338cdde8194fa0821de7080a68ea69 [2020-04-18 15:45:06,625 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:45:06,649 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:45:06,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:45:06,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:45:06,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:45:06,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:45:06" (1/1) ... [2020-04-18 15:45:06,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f6b4f64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:06, skipping insertion in model container [2020-04-18 15:45:06,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:45:06" (1/1) ... [2020-04-18 15:45:06,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:45:06,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:45:07,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:45:07,145 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:45:07,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:45:07,327 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:45:07,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:07 WrapperNode [2020-04-18 15:45:07,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:45:07,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:45:07,329 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:45:07,329 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:45:07,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:07" (1/1) ... [2020-04-18 15:45:07,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:07" (1/1) ... [2020-04-18 15:45:07,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:45:07,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:45:07,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:45:07,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:45:07,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:07" (1/1) ... [2020-04-18 15:45:07,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:07" (1/1) ... [2020-04-18 15:45:07,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:07" (1/1) ... [2020-04-18 15:45:07,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:07" (1/1) ... [2020-04-18 15:45:07,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:07" (1/1) ... [2020-04-18 15:45:07,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:07" (1/1) ... [2020-04-18 15:45:07,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:07" (1/1) ... [2020-04-18 15:45:07,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:45:07,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:45:07,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:45:07,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:45:07,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:07" (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 15:45:07,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:45:07,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:45:07,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:45:07,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:45:07,541 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:45:07,541 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:45:07,542 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:45:07,542 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:45:07,542 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:45:07,542 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:45:07,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:45:07,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:45:07,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:45:07,545 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 15:45:07,939 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:45:07,939 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:45:07,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:45:07 BoogieIcfgContainer [2020-04-18 15:45:07,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:45:07,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:45:07,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:45:07,952 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:45:07,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:45:06" (1/3) ... [2020-04-18 15:45:07,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fb55a7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:45:07, skipping insertion in model container [2020-04-18 15:45:07,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:07" (2/3) ... [2020-04-18 15:45:07,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fb55a7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:45:07, skipping insertion in model container [2020-04-18 15:45:07,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:45:07" (3/3) ... [2020-04-18 15:45:07,956 INFO L109 eAbstractionObserver]: Analyzing ICFG safe037_pso.opt.i [2020-04-18 15:45:07,965 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:45:07,965 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:45:07,972 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:45:07,973 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:45:08,000 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:08,000 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:08,000 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:08,001 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:08,001 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:08,001 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:08,002 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:08,002 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:08,002 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:08,003 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:08,003 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:08,003 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:08,004 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:08,004 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:08,004 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:08,005 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:08,005 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:08,005 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:08,009 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:08,010 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:08,010 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:08,010 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:08,017 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:08,017 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:08,017 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:08,018 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:08,020 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:08,021 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:08,021 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:08,021 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:08,036 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 15:45:08,053 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:45:08,053 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:45:08,053 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:45:08,053 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:45:08,053 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:45:08,054 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:45:08,054 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:45:08,054 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:45:08,069 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-04-18 15:45:08,070 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 15:45:08,114 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 15:45:08,115 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:45:08,120 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 15:45:08,123 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 15:45:08,147 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 15:45:08,147 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:45:08,148 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 15:45:08,150 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 15:45:08,151 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:45:09,505 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-04-18 15:45:09,604 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2315 [2020-04-18 15:45:09,604 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-18 15:45:09,608 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-18 15:45:09,641 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-18 15:45:09,644 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-18 15:45:09,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:45:09,666 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:45:09,667 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:45:09,667 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:45:09,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:09,677 INFO L82 PathProgramCache]: Analyzing trace with hash 385809968, now seen corresponding path program 1 times [2020-04-18 15:45:09,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:45:09,684 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1811676800] [2020-04-18 15:45:09,701 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:09,715 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:45:09,717 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 15:45:09,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:45:09,719 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:45:09,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:09,720 INFO L82 PathProgramCache]: Analyzing trace with hash 385809968, now seen corresponding path program 2 times [2020-04-18 15:45:09,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:45:09,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075745684] [2020-04-18 15:45:09,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:45:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:45:10,014 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 15:45:10,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075745684] [2020-04-18 15:45:10,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:45:10,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:45:10,021 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:45:10,022 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:10,028 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:45:10,028 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:45:10,032 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:45:10,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 15:45:10,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 15:45:10,039 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 2 states. [2020-04-18 15:45:10,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:10,043 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 15:45:10,044 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 15:45:10,044 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:45:10,045 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1811676800] [2020-04-18 15:45:10,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:45:10,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:45:10,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1811676800] [2020-04-18 15:45:10,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 15:45:10,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:45:10,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 15:45:10,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 15:45:10,053 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-18 15:45:10,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:10,088 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-18 15:45:10,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 15:45:10,090 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-18 15:45:10,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:45:10,131 INFO L225 Difference]: With dead ends: 362 [2020-04-18 15:45:10,132 INFO L226 Difference]: Without dead ends: 298 [2020-04-18 15:45:10,133 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 15:45:10,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-18 15:45:10,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-18 15:45:10,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-18 15:45:10,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-18 15:45:10,245 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-18 15:45:10,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:45:10,246 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-18 15:45:10,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 15:45:10,247 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-18 15:45:10,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:45:10,249 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:45:10,249 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:45:10,249 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:45:10,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:10,250 INFO L82 PathProgramCache]: Analyzing trace with hash -924796273, now seen corresponding path program 1 times [2020-04-18 15:45:10,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:45:10,250 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [778480962] [2020-04-18 15:45:10,251 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:10,251 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 15:45:10,251 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 15:45:10,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:45:10,252 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:45:10,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:10,252 INFO L82 PathProgramCache]: Analyzing trace with hash -924796273, now seen corresponding path program 2 times [2020-04-18 15:45:10,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:45:10,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443219220] [2020-04-18 15:45:10,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:45:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:45:10,394 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 15:45:10,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443219220] [2020-04-18 15:45:10,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:45:10,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:45:10,395 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:45:10,396 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:10,397 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 15:45:10,398 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:45:10,402 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:45:10,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:45:10,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:45:10,403 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2020-04-18 15:45:10,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:10,403 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-04-18 15:45:10,404 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-04-18 15:45:10,404 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:45:10,404 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [778480962] [2020-04-18 15:45:10,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:45:10,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:45:10,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [778480962] [2020-04-18 15:45:10,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:45:10,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:45:10,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:45:10,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:45:10,407 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-04-18 15:45:10,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:10,422 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-04-18 15:45:10,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:45:10,423 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-18 15:45:10,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:45:10,425 INFO L225 Difference]: With dead ends: 217 [2020-04-18 15:45:10,425 INFO L226 Difference]: Without dead ends: 217 [2020-04-18 15:45:10,426 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 15:45:10,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-04-18 15:45:10,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-04-18 15:45:10,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-04-18 15:45:10,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-04-18 15:45:10,441 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-04-18 15:45:10,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:45:10,441 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-04-18 15:45:10,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:45:10,442 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-04-18 15:45:10,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:45:10,443 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:45:10,443 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:45:10,443 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:45:10,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:10,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1123394358, now seen corresponding path program 1 times [2020-04-18 15:45:10,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:45:10,444 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1551579547] [2020-04-18 15:45:10,445 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:10,446 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 54 transitions. [2020-04-18 15:45:10,446 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-04-18 15:45:10,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:45:10,447 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:45:10,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:10,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1123394358, now seen corresponding path program 2 times [2020-04-18 15:45:10,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:45:10,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576748298] [2020-04-18 15:45:10,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:45:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:45:10,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:45:10,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576748298] [2020-04-18 15:45:10,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:45:10,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:45:10,556 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:45:10,557 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:10,559 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 36 transitions. [2020-04-18 15:45:10,559 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:45:10,567 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:45:10,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:45:10,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:45:10,568 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2020-04-18 15:45:10,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:10,577 INFO L93 Difference]: Finished difference Result 34 states and 54 transitions. [2020-04-18 15:45:10,577 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 54 transitions. [2020-04-18 15:45:10,578 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:45:10,578 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1551579547] [2020-04-18 15:45:10,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:45:10,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:45:10,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1551579547] [2020-04-18 15:45:10,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:45:10,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:45:10,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:45:10,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:45:10,582 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 4 states. [2020-04-18 15:45:10,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:10,607 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-04-18 15:45:10,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 15:45:10,607 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 15:45:10,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:45:10,608 INFO L225 Difference]: With dead ends: 136 [2020-04-18 15:45:10,609 INFO L226 Difference]: Without dead ends: 136 [2020-04-18 15:45:10,609 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 15:45:10,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-04-18 15:45:10,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-04-18 15:45:10,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-04-18 15:45:10,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-04-18 15:45:10,614 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-04-18 15:45:10,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:45:10,614 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-04-18 15:45:10,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:45:10,615 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-04-18 15:45:10,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:45:10,616 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:45:10,616 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:45:10,616 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:45:10,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:10,616 INFO L82 PathProgramCache]: Analyzing trace with hash -104701845, now seen corresponding path program 1 times [2020-04-18 15:45:10,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:45:10,617 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [116261815] [2020-04-18 15:45:10,618 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:10,619 INFO L259 McrAutomatonBuilder]: Finished intersection with 82 states and 174 transitions. [2020-04-18 15:45:10,620 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2020-04-18 15:45:10,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:45:10,621 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:45:10,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:10,622 INFO L82 PathProgramCache]: Analyzing trace with hash -104701845, now seen corresponding path program 2 times [2020-04-18 15:45:10,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:45:10,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294964364] [2020-04-18 15:45:10,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:45:10,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:45:10,712 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 15:45:10,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294964364] [2020-04-18 15:45:10,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:45:10,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:45:10,713 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:45:10,714 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:10,718 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 49 transitions. [2020-04-18 15:45:10,718 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:45:10,736 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:45:10,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:45:10,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:45:10,737 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 5 states. [2020-04-18 15:45:10,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:10,753 INFO L93 Difference]: Finished difference Result 82 states and 174 transitions. [2020-04-18 15:45:10,753 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 174 transitions. [2020-04-18 15:45:10,753 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:45:10,754 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [116261815] [2020-04-18 15:45:10,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:45:10,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:45:10,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [116261815] [2020-04-18 15:45:10,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 15:45:10,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:45:10,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:45:10,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:45:10,758 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 5 states. [2020-04-18 15:45:10,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:10,786 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-04-18 15:45:10,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 15:45:10,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-18 15:45:10,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:45:10,787 INFO L225 Difference]: With dead ends: 109 [2020-04-18 15:45:10,787 INFO L226 Difference]: Without dead ends: 109 [2020-04-18 15:45:10,788 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 15:45:10,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-04-18 15:45:10,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-04-18 15:45:10,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-04-18 15:45:10,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-04-18 15:45:10,791 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-04-18 15:45:10,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:45:10,792 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-04-18 15:45:10,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 15:45:10,792 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-04-18 15:45:10,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:45:10,793 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:45:10,793 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 15:45:10,793 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:45:10,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:10,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1786856379, now seen corresponding path program 1 times [2020-04-18 15:45:10,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:45:10,794 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [741260979] [2020-04-18 15:45:10,795 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:10,802 INFO L259 McrAutomatonBuilder]: Finished intersection with 298 states and 864 transitions. [2020-04-18 15:45:10,806 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 15:45:10,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:45:10,807 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:45:10,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:10,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1786856379, now seen corresponding path program 2 times [2020-04-18 15:45:10,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:45:10,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612357264] [2020-04-18 15:45:10,809 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:45:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:45:10,910 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 15:45:10,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612357264] [2020-04-18 15:45:10,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:45:10,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:45:10,911 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:45:10,913 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:10,919 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 85 transitions. [2020-04-18 15:45:10,920 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:45:10,948 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 15:45:10,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:45:10,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:45:10,949 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 5 states. [2020-04-18 15:45:10,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:10,999 INFO L93 Difference]: Finished difference Result 442 states and 1236 transitions. [2020-04-18 15:45:11,000 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1236 transitions. [2020-04-18 15:45:11,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:45:11,002 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:45:11,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:11,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1847699439, now seen corresponding path program 3 times [2020-04-18 15:45:11,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:45:11,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322123790] [2020-04-18 15:45:11,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:45:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:45:11,069 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 15:45:11,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322123790] [2020-04-18 15:45:11,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:45:11,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:45:11,071 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:45:11,073 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:11,080 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 86 transitions. [2020-04-18 15:45:11,080 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:45:11,108 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:45:11,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:45:11,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:45:11,109 INFO L87 Difference]: Start difference. First operand 442 states and 1236 transitions. Second operand 5 states. [2020-04-18 15:45:11,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:11,144 INFO L93 Difference]: Finished difference Result 448 states and 1240 transitions. [2020-04-18 15:45:11,144 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 1240 transitions. [2020-04-18 15:45:11,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:45:11,146 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:45:11,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:11,146 INFO L82 PathProgramCache]: Analyzing trace with hash -739037833, now seen corresponding path program 4 times [2020-04-18 15:45:11,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:45:11,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437868208] [2020-04-18 15:45:11,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:45:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:45:11,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:45:11,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437868208] [2020-04-18 15:45:11,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:45:11,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:45:11,261 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:45:11,263 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:11,267 INFO L259 McrAutomatonBuilder]: Finished intersection with 47 states and 78 transitions. [2020-04-18 15:45:11,268 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:45:11,293 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:45:11,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:45:11,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:45:11,294 INFO L87 Difference]: Start difference. First operand 448 states and 1240 transitions. Second operand 5 states. [2020-04-18 15:45:11,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:11,337 INFO L93 Difference]: Finished difference Result 718 states and 1888 transitions. [2020-04-18 15:45:11,338 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1888 transitions. [2020-04-18 15:45:11,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:45:11,340 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:45:11,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:11,340 INFO L82 PathProgramCache]: Analyzing trace with hash -845563335, now seen corresponding path program 5 times [2020-04-18 15:45:11,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:45:11,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444989604] [2020-04-18 15:45:11,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:45:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:45:11,417 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 15:45:11,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444989604] [2020-04-18 15:45:11,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:45:11,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:45:11,418 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:45:11,420 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:11,423 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 38 transitions. [2020-04-18 15:45:11,423 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:45:11,516 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:45:11,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:45:11,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-04-18 15:45:11,517 INFO L87 Difference]: Start difference. First operand 718 states and 1888 transitions. Second operand 6 states. [2020-04-18 15:45:11,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:11,605 INFO L93 Difference]: Finished difference Result 1235 states and 3060 transitions. [2020-04-18 15:45:11,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 3060 transitions. [2020-04-18 15:45:11,609 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:45:11,610 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [741260979] [2020-04-18 15:45:11,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:45:11,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:45:11,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [741260979] [2020-04-18 15:45:11,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 15:45:11,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:45:11,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 15:45:11,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-04-18 15:45:11,612 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 13 states. [2020-04-18 15:45:13,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:13,133 INFO L93 Difference]: Finished difference Result 240 states and 478 transitions. [2020-04-18 15:45:13,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-04-18 15:45:13,134 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2020-04-18 15:45:13,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:45:13,134 INFO L225 Difference]: With dead ends: 240 [2020-04-18 15:45:13,135 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:45:13,137 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2124 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1248, Invalid=5232, Unknown=0, NotChecked=0, Total=6480 [2020-04-18 15:45:13,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:45:13,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:45:13,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:45:13,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:45:13,138 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-04-18 15:45:13,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:45:13,138 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:45:13,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 15:45:13,139 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:45:13,139 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:45:13,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:45:13 BasicIcfg [2020-04-18 15:45:13,142 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:45:13,144 INFO L168 Benchmark]: Toolchain (without parser) took 6517.20 ms. Allocated memory was 144.2 MB in the beginning and 284.7 MB in the end (delta: 140.5 MB). Free memory was 102.0 MB in the beginning and 106.7 MB in the end (delta: -4.7 MB). Peak memory consumption was 135.8 MB. Max. memory is 7.1 GB. [2020-04-18 15:45:13,145 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 144.2 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 15:45:13,146 INFO L168 Benchmark]: CACSL2BoogieTranslator took 678.26 ms. Allocated memory was 144.2 MB in the beginning and 203.4 MB in the end (delta: 59.2 MB). Free memory was 99.9 MB in the beginning and 158.3 MB in the end (delta: -58.3 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-04-18 15:45:13,147 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.77 ms. Allocated memory is still 203.4 MB. Free memory was 158.3 MB in the beginning and 156.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 15:45:13,148 INFO L168 Benchmark]: Boogie Preprocessor took 55.35 ms. Allocated memory is still 203.4 MB. Free memory was 156.2 MB in the beginning and 154.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:45:13,149 INFO L168 Benchmark]: RCFGBuilder took 471.11 ms. Allocated memory is still 203.4 MB. Free memory was 154.2 MB in the beginning and 132.3 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-04-18 15:45:13,149 INFO L168 Benchmark]: TraceAbstraction took 5197.09 ms. Allocated memory was 203.4 MB in the beginning and 284.7 MB in the end (delta: 81.3 MB). Free memory was 131.6 MB in the beginning and 106.7 MB in the end (delta: 24.9 MB). Peak memory consumption was 106.2 MB. Max. memory is 7.1 GB. [2020-04-18 15:45:13,154 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 144.2 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 678.26 ms. Allocated memory was 144.2 MB in the beginning and 203.4 MB in the end (delta: 59.2 MB). Free memory was 99.9 MB in the beginning and 158.3 MB in the end (delta: -58.3 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 85.77 ms. Allocated memory is still 203.4 MB. Free memory was 158.3 MB in the beginning and 156.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 55.35 ms. Allocated memory is still 203.4 MB. Free memory was 156.2 MB in the beginning and 154.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 471.11 ms. Allocated memory is still 203.4 MB. Free memory was 154.2 MB in the beginning and 132.3 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5197.09 ms. Allocated memory was 203.4 MB in the beginning and 284.7 MB in the end (delta: 81.3 MB). Free memory was 131.6 MB in the beginning and 106.7 MB in the end (delta: 24.9 MB). Peak memory consumption was 106.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 79 ProgramPointsBefore, 32 ProgramPointsAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 640 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 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: 5.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, 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...