/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.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:02:10,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:02:10,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:02:10,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:02:10,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:02:10,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:02:10,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:02:10,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:02:10,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:02:10,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:02:10,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:02:10,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:02:10,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:02:10,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:02:10,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:02:10,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:02:10,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:02:10,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:02:10,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:02:10,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:02:10,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:02:10,487 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:02:10,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:02:10,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:02:10,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:02:10,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:02:10,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:02:10,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:02:10,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:02:10,492 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:02:10,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:02:10,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:02:10,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:02:10,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:02:10,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:02:10,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:02:10,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:02:10,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:02:10,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:02:10,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:02:10,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:02:10,499 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.epf [2020-04-18 02:02:10,512 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:02:10,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:02:10,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:02:10,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:02:10,514 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:02:10,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:02:10,514 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:02:10,515 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:02:10,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:02:10,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:02:10,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:02:10,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:02:10,516 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:02:10,516 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:02:10,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:02:10,516 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:02:10,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:02:10,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:02:10,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:02:10,517 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:02:10,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:02:10,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:02:10,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:02:10,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:02:10,518 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:02:10,518 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:02:10,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:02:10,518 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:02:10,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:02:10,519 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:02:10,779 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:02:10,789 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:02:10,792 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:02:10,793 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:02:10,794 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:02:10,795 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2020-04-18 02:02:10,866 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31d8dc342/e3921599caf94b2d95573f757257456a/FLAG9b9a6572f [2020-04-18 02:02:11,347 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:02:11,348 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2020-04-18 02:02:11,369 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31d8dc342/e3921599caf94b2d95573f757257456a/FLAG9b9a6572f [2020-04-18 02:02:11,693 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31d8dc342/e3921599caf94b2d95573f757257456a [2020-04-18 02:02:11,701 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:02:11,721 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:02:11,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:02:11,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:02:11,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:02:11,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:02:11" (1/1) ... [2020-04-18 02:02:11,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10143938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:02:11, skipping insertion in model container [2020-04-18 02:02:11,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:02:11" (1/1) ... [2020-04-18 02:02:11,736 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:02:11,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:02:12,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:02:12,226 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:02:12,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:02:12,369 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:02:12,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:02:12 WrapperNode [2020-04-18 02:02:12,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:02:12,371 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:02:12,371 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:02:12,371 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:02:12,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:02:12" (1/1) ... [2020-04-18 02:02:12,396 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:02:12" (1/1) ... [2020-04-18 02:02:12,417 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:02:12,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:02:12,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:02:12,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:02:12,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:02:12" (1/1) ... [2020-04-18 02:02:12,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:02:12" (1/1) ... [2020-04-18 02:02:12,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:02:12" (1/1) ... [2020-04-18 02:02:12,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:02:12" (1/1) ... [2020-04-18 02:02:12,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:02:12" (1/1) ... [2020-04-18 02:02:12,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:02:12" (1/1) ... [2020-04-18 02:02:12,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:02:12" (1/1) ... [2020-04-18 02:02:12,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:02:12,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:02:12,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:02:12,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:02:12,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:02:12" (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 02:02:12,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:02:12,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:02:12,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:02:12,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:02:12,508 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:02:12,509 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:02:12,509 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:02:12,510 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:02:12,510 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:02:12,511 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:02:12,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:02:12,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:02:12,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:02:12,513 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 02:02:12,912 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:02:12,912 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:02:12,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:02:12 BoogieIcfgContainer [2020-04-18 02:02:12,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:02:12,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:02:12,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:02:12,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:02:12,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:02:11" (1/3) ... [2020-04-18 02:02:12,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15de2e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:02:12, skipping insertion in model container [2020-04-18 02:02:12,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:02:12" (2/3) ... [2020-04-18 02:02:12,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15de2e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:02:12, skipping insertion in model container [2020-04-18 02:02:12,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:02:12" (3/3) ... [2020-04-18 02:02:12,928 INFO L109 eAbstractionObserver]: Analyzing ICFG safe001_tso.opt.i [2020-04-18 02:02:12,935 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:02:12,936 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:02:12,941 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:02:12,942 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:02:12,978 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:12,979 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:12,979 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:12,979 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:12,980 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:12,980 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:12,980 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:12,981 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:12,981 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:12,983 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:12,983 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:12,984 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:12,985 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:12,985 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:12,985 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:12,985 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:12,986 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:12,987 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:12,990 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:12,991 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:12,993 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:12,993 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:13,007 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:13,007 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:13,008 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:13,008 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:13,010 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:13,011 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:13,011 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:13,011 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:02:13,032 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:02:13,048 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:02:13,049 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:02:13,049 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:02:13,049 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:02:13,049 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:02:13,049 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:02:13,049 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:02:13,050 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:02:13,066 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-18 02:02:13,068 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 02:02:13,115 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 02:02:13,116 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:02:13,124 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:02:13,130 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 02:02:13,157 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 02:02:13,158 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:02:13,158 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:02:13,160 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 02:02:13,161 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:02:14,596 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-04-18 02:02:14,737 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2483 [2020-04-18 02:02:14,738 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-18 02:02:14,741 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 02:02:14,766 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 02:02:14,768 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 02:02:14,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:02:14,776 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:02:14,777 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:02:14,777 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:02:14,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:02:14,784 INFO L82 PathProgramCache]: Analyzing trace with hash -245765301, now seen corresponding path program 1 times [2020-04-18 02:02:14,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:02:14,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501767454] [2020-04-18 02:02:14,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:02:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:02:14,991 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 02:02:14,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501767454] [2020-04-18 02:02:14,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:02:14,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:02:14,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773779286] [2020-04-18 02:02:14,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:02:14,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:02:15,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:02:15,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:02:15,014 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 02:02:15,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:02:15,092 INFO L93 Difference]: Finished difference Result 282 states and 804 transitions. [2020-04-18 02:02:15,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:02:15,094 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 02:02:15,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:02:15,133 INFO L225 Difference]: With dead ends: 282 [2020-04-18 02:02:15,134 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 02:02:15,136 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 02:02:15,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 02:02:15,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 02:02:15,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 02:02:15,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 596 transitions. [2020-04-18 02:02:15,209 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 596 transitions. Word has length 8 [2020-04-18 02:02:15,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:02:15,210 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 596 transitions. [2020-04-18 02:02:15,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:02:15,211 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 596 transitions. [2020-04-18 02:02:15,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:02:15,213 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:02:15,213 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:02:15,213 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:02:15,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:02:15,213 INFO L82 PathProgramCache]: Analyzing trace with hash -457725721, now seen corresponding path program 1 times [2020-04-18 02:02:15,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:02:15,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026082794] [2020-04-18 02:02:15,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:02:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:02:15,327 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 02:02:15,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026082794] [2020-04-18 02:02:15,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:02:15,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:02:15,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246418228] [2020-04-18 02:02:15,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:02:15,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:02:15,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:02:15,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:02:15,333 INFO L87 Difference]: Start difference. First operand 218 states and 596 transitions. Second operand 3 states. [2020-04-18 02:02:15,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:02:15,359 INFO L93 Difference]: Finished difference Result 250 states and 644 transitions. [2020-04-18 02:02:15,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:02:15,362 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-18 02:02:15,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:02:15,365 INFO L225 Difference]: With dead ends: 250 [2020-04-18 02:02:15,366 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 02:02:15,366 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 02:02:15,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 02:02:15,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 202. [2020-04-18 02:02:15,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-18 02:02:15,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 528 transitions. [2020-04-18 02:02:15,401 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 528 transitions. Word has length 10 [2020-04-18 02:02:15,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:02:15,401 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 528 transitions. [2020-04-18 02:02:15,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:02:15,401 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 528 transitions. [2020-04-18 02:02:15,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:02:15,403 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:02:15,403 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:02:15,403 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:02:15,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:02:15,404 INFO L82 PathProgramCache]: Analyzing trace with hash 42721384, now seen corresponding path program 1 times [2020-04-18 02:02:15,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:02:15,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835430529] [2020-04-18 02:02:15,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:02:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:02:15,464 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 02:02:15,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835430529] [2020-04-18 02:02:15,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:02:15,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:02:15,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806017684] [2020-04-18 02:02:15,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:02:15,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:02:15,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:02:15,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:02:15,467 INFO L87 Difference]: Start difference. First operand 202 states and 528 transitions. Second operand 3 states. [2020-04-18 02:02:15,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:02:15,474 INFO L93 Difference]: Finished difference Result 198 states and 514 transitions. [2020-04-18 02:02:15,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:02:15,475 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-18 02:02:15,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:02:15,477 INFO L225 Difference]: With dead ends: 198 [2020-04-18 02:02:15,477 INFO L226 Difference]: Without dead ends: 198 [2020-04-18 02:02:15,477 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 02:02:15,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-04-18 02:02:15,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-04-18 02:02:15,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-04-18 02:02:15,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 514 transitions. [2020-04-18 02:02:15,490 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 514 transitions. Word has length 10 [2020-04-18 02:02:15,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:02:15,490 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 514 transitions. [2020-04-18 02:02:15,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:02:15,491 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 514 transitions. [2020-04-18 02:02:15,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:02:15,492 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:02:15,492 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:02:15,493 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:02:15,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:02:15,493 INFO L82 PathProgramCache]: Analyzing trace with hash 178653510, now seen corresponding path program 1 times [2020-04-18 02:02:15,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:02:15,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143373802] [2020-04-18 02:02:15,494 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:02:15,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:02:15,542 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 02:02:15,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143373802] [2020-04-18 02:02:15,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:02:15,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:02:15,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046614388] [2020-04-18 02:02:15,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:02:15,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:02:15,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:02:15,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:02:15,545 INFO L87 Difference]: Start difference. First operand 198 states and 514 transitions. Second operand 3 states. [2020-04-18 02:02:15,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:02:15,552 INFO L93 Difference]: Finished difference Result 192 states and 495 transitions. [2020-04-18 02:02:15,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:02:15,552 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-18 02:02:15,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:02:15,554 INFO L225 Difference]: With dead ends: 192 [2020-04-18 02:02:15,554 INFO L226 Difference]: Without dead ends: 192 [2020-04-18 02:02:15,555 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 02:02:15,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-04-18 02:02:15,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2020-04-18 02:02:15,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-04-18 02:02:15,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 495 transitions. [2020-04-18 02:02:15,564 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 495 transitions. Word has length 11 [2020-04-18 02:02:15,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:02:15,564 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 495 transitions. [2020-04-18 02:02:15,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:02:15,565 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 495 transitions. [2020-04-18 02:02:15,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:02:15,567 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:02:15,567 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:02:15,567 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:02:15,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:02:15,567 INFO L82 PathProgramCache]: Analyzing trace with hash 707253593, now seen corresponding path program 1 times [2020-04-18 02:02:15,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:02:15,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747261241] [2020-04-18 02:02:15,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:02:15,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:02:15,621 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 02:02:15,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747261241] [2020-04-18 02:02:15,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:02:15,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:02:15,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068443220] [2020-04-18 02:02:15,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:02:15,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:02:15,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:02:15,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:02:15,627 INFO L87 Difference]: Start difference. First operand 192 states and 495 transitions. Second operand 3 states. [2020-04-18 02:02:15,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:02:15,643 INFO L93 Difference]: Finished difference Result 260 states and 637 transitions. [2020-04-18 02:02:15,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:02:15,643 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-04-18 02:02:15,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:02:15,646 INFO L225 Difference]: With dead ends: 260 [2020-04-18 02:02:15,646 INFO L226 Difference]: Without dead ends: 200 [2020-04-18 02:02:15,647 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 02:02:15,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-04-18 02:02:15,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 188. [2020-04-18 02:02:15,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-04-18 02:02:15,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 453 transitions. [2020-04-18 02:02:15,667 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 453 transitions. Word has length 12 [2020-04-18 02:02:15,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:02:15,668 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 453 transitions. [2020-04-18 02:02:15,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:02:15,668 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 453 transitions. [2020-04-18 02:02:15,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:02:15,672 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:02:15,672 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:02:15,672 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:02:15,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:02:15,673 INFO L82 PathProgramCache]: Analyzing trace with hash 131136693, now seen corresponding path program 1 times [2020-04-18 02:02:15,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:02:15,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003902356] [2020-04-18 02:02:15,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:02:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:02:15,742 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 02:02:15,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003902356] [2020-04-18 02:02:15,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:02:15,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:02:15,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612056343] [2020-04-18 02:02:15,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:02:15,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:02:15,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:02:15,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:02:15,745 INFO L87 Difference]: Start difference. First operand 188 states and 453 transitions. Second operand 4 states. [2020-04-18 02:02:15,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:02:15,771 INFO L93 Difference]: Finished difference Result 230 states and 538 transitions. [2020-04-18 02:02:15,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:02:15,771 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 02:02:15,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:02:15,773 INFO L225 Difference]: With dead ends: 230 [2020-04-18 02:02:15,773 INFO L226 Difference]: Without dead ends: 134 [2020-04-18 02:02:15,773 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:02:15,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-04-18 02:02:15,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-04-18 02:02:15,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-04-18 02:02:15,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 300 transitions. [2020-04-18 02:02:15,778 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 300 transitions. Word has length 12 [2020-04-18 02:02:15,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:02:15,779 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 300 transitions. [2020-04-18 02:02:15,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:02:15,779 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 300 transitions. [2020-04-18 02:02:15,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:02:15,780 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:02:15,780 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:02:15,780 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:02:15,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:02:15,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1034166645, now seen corresponding path program 1 times [2020-04-18 02:02:15,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:02:15,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522978801] [2020-04-18 02:02:15,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:02:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:02:15,820 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 02:02:15,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522978801] [2020-04-18 02:02:15,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:02:15,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:02:15,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892013912] [2020-04-18 02:02:15,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:02:15,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:02:15,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:02:15,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:02:15,822 INFO L87 Difference]: Start difference. First operand 134 states and 300 transitions. Second operand 4 states. [2020-04-18 02:02:15,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:02:15,843 INFO L93 Difference]: Finished difference Result 154 states and 326 transitions. [2020-04-18 02:02:15,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:02:15,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-18 02:02:15,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:02:15,844 INFO L225 Difference]: With dead ends: 154 [2020-04-18 02:02:15,844 INFO L226 Difference]: Without dead ends: 64 [2020-04-18 02:02:15,845 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:02:15,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-04-18 02:02:15,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-04-18 02:02:15,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-04-18 02:02:15,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 130 transitions. [2020-04-18 02:02:15,848 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 130 transitions. Word has length 13 [2020-04-18 02:02:15,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:02:15,848 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 130 transitions. [2020-04-18 02:02:15,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:02:15,848 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 130 transitions. [2020-04-18 02:02:15,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:02:15,849 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:02:15,849 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:02:15,849 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:02:15,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:02:15,850 INFO L82 PathProgramCache]: Analyzing trace with hash -589742481, now seen corresponding path program 2 times [2020-04-18 02:02:15,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:02:15,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143294594] [2020-04-18 02:02:15,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:02:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:02:15,884 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 02:02:15,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143294594] [2020-04-18 02:02:15,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:02:15,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:02:15,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709497234] [2020-04-18 02:02:15,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:02:15,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:02:15,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:02:15,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:02:15,886 INFO L87 Difference]: Start difference. First operand 64 states and 130 transitions. Second operand 4 states. [2020-04-18 02:02:15,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:02:15,907 INFO L93 Difference]: Finished difference Result 72 states and 142 transitions. [2020-04-18 02:02:15,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:02:15,908 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-18 02:02:15,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:02:15,908 INFO L225 Difference]: With dead ends: 72 [2020-04-18 02:02:15,909 INFO L226 Difference]: Without dead ends: 52 [2020-04-18 02:02:15,909 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:02:15,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-04-18 02:02:15,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-04-18 02:02:15,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-04-18 02:02:15,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 96 transitions. [2020-04-18 02:02:15,911 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 96 transitions. Word has length 13 [2020-04-18 02:02:15,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:02:15,912 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 96 transitions. [2020-04-18 02:02:15,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:02:15,912 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 96 transitions. [2020-04-18 02:02:15,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:02:15,913 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:02:15,913 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:02:15,913 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:02:15,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:02:15,913 INFO L82 PathProgramCache]: Analyzing trace with hash 413415217, now seen corresponding path program 3 times [2020-04-18 02:02:15,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:02:15,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417286452] [2020-04-18 02:02:15,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:02:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:02:16,003 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 02:02:16,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417286452] [2020-04-18 02:02:16,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:02:16,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:02:16,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295148326] [2020-04-18 02:02:16,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:02:16,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:02:16,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:02:16,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:02:16,006 INFO L87 Difference]: Start difference. First operand 52 states and 96 transitions. Second operand 4 states. [2020-04-18 02:02:16,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:02:16,030 INFO L93 Difference]: Finished difference Result 57 states and 96 transitions. [2020-04-18 02:02:16,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:02:16,030 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-18 02:02:16,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:02:16,031 INFO L225 Difference]: With dead ends: 57 [2020-04-18 02:02:16,031 INFO L226 Difference]: Without dead ends: 43 [2020-04-18 02:02:16,032 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:02:16,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-04-18 02:02:16,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-04-18 02:02:16,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-04-18 02:02:16,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 70 transitions. [2020-04-18 02:02:16,034 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 70 transitions. Word has length 13 [2020-04-18 02:02:16,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:02:16,034 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 70 transitions. [2020-04-18 02:02:16,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:02:16,034 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 70 transitions. [2020-04-18 02:02:16,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:02:16,035 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:02:16,035 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:02:16,035 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:02:16,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:02:16,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1574125730, now seen corresponding path program 1 times [2020-04-18 02:02:16,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:02:16,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494449564] [2020-04-18 02:02:16,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:02:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:02:16,083 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 02:02:16,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494449564] [2020-04-18 02:02:16,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:02:16,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:02:16,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976258709] [2020-04-18 02:02:16,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:02:16,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:02:16,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:02:16,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:02:16,086 INFO L87 Difference]: Start difference. First operand 43 states and 70 transitions. Second operand 5 states. [2020-04-18 02:02:16,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:02:16,134 INFO L93 Difference]: Finished difference Result 39 states and 59 transitions. [2020-04-18 02:02:16,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:02:16,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-18 02:02:16,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:02:16,135 INFO L225 Difference]: With dead ends: 39 [2020-04-18 02:02:16,135 INFO L226 Difference]: Without dead ends: 31 [2020-04-18 02:02:16,135 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:02:16,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-04-18 02:02:16,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-04-18 02:02:16,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-04-18 02:02:16,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 44 transitions. [2020-04-18 02:02:16,137 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 44 transitions. Word has length 14 [2020-04-18 02:02:16,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:02:16,137 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 44 transitions. [2020-04-18 02:02:16,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:02:16,138 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 44 transitions. [2020-04-18 02:02:16,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:02:16,138 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:02:16,138 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:02:16,139 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:02:16,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:02:16,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1126720068, now seen corresponding path program 1 times [2020-04-18 02:02:16,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:02:16,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775546205] [2020-04-18 02:02:16,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:02:16,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:02:16,215 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 02:02:16,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775546205] [2020-04-18 02:02:16,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:02:16,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:02:16,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207615271] [2020-04-18 02:02:16,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:02:16,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:02:16,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:02:16,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:02:16,218 INFO L87 Difference]: Start difference. First operand 31 states and 44 transitions. Second operand 6 states. [2020-04-18 02:02:16,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:02:16,242 INFO L93 Difference]: Finished difference Result 28 states and 41 transitions. [2020-04-18 02:02:16,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:02:16,243 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-18 02:02:16,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:02:16,243 INFO L225 Difference]: With dead ends: 28 [2020-04-18 02:02:16,246 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:02:16,246 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:02:16,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:02:16,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:02:16,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:02:16,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:02:16,247 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-04-18 02:02:16,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:02:16,247 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:02:16,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:02:16,247 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:02:16,247 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:02:16,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:02:16 BasicIcfg [2020-04-18 02:02:16,254 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:02:16,256 INFO L168 Benchmark]: Toolchain (without parser) took 4553.63 ms. Allocated memory was 137.9 MB in the beginning and 249.0 MB in the end (delta: 111.1 MB). Free memory was 101.3 MB in the beginning and 180.9 MB in the end (delta: -79.6 MB). Peak memory consumption was 31.5 MB. Max. memory is 7.1 GB. [2020-04-18 02:02:16,257 INFO L168 Benchmark]: CDTParser took 1.03 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-04-18 02:02:16,258 INFO L168 Benchmark]: CACSL2BoogieTranslator took 648.17 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 99.5 MB in the beginning and 158.4 MB in the end (delta: -59.0 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:02:16,259 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.24 ms. Allocated memory is still 201.3 MB. Free memory was 158.4 MB in the beginning and 155.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-04-18 02:02:16,260 INFO L168 Benchmark]: Boogie Preprocessor took 26.63 ms. Allocated memory is still 201.3 MB. Free memory was 155.7 MB in the beginning and 154.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 02:02:16,262 INFO L168 Benchmark]: RCFGBuilder took 472.80 ms. Allocated memory is still 201.3 MB. Free memory was 154.4 MB in the beginning and 132.5 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:02:16,266 INFO L168 Benchmark]: TraceAbstraction took 3336.14 ms. Allocated memory was 201.3 MB in the beginning and 249.0 MB in the end (delta: 47.7 MB). Free memory was 132.5 MB in the beginning and 180.9 MB in the end (delta: -48.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:02:16,275 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.03 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 648.17 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 99.5 MB in the beginning and 158.4 MB in the end (delta: -59.0 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 46.24 ms. Allocated memory is still 201.3 MB. Free memory was 158.4 MB in the beginning and 155.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.63 ms. Allocated memory is still 201.3 MB. Free memory was 155.7 MB in the beginning and 154.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 472.80 ms. Allocated memory is still 201.3 MB. Free memory was 154.4 MB in the beginning and 132.5 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3336.14 ms. Allocated memory was 201.3 MB in the beginning and 249.0 MB in the end (delta: 47.7 MB). Free memory was 132.5 MB in the beginning and 180.9 MB in the end (delta: -48.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 656 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2483 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, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 204 SDtfs, 116 SDslu, 187 SDs, 0 SdLazy, 102 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 28 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 131 NumberOfCodeBlocks, 131 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 4230 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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...