/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/safe002_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:03:51,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:03:51,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:03:51,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:03:51,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:03:51,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:03:51,337 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:03:51,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:03:51,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:03:51,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:03:51,343 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:03:51,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:03:51,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:03:51,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:03:51,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:03:51,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:03:51,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:03:51,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:03:51,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:03:51,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:03:51,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:03:51,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:03:51,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:03:51,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:03:51,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:03:51,360 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:03:51,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:03:51,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:03:51,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:03:51,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:03:51,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:03:51,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:03:51,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:03:51,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:03:51,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:03:51,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:03:51,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:03:51,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:03:51,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:03:51,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:03:51,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:03:51,370 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 02:03:51,388 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:03:51,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:03:51,390 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:03:51,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:03:51,390 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:03:51,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:03:51,391 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:03:51,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:03:51,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:03:51,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:03:51,391 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:03:51,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:03:51,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:03:51,392 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:03:51,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:03:51,392 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:03:51,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:03:51,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:03:51,393 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:03:51,393 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:03:51,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:03:51,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:03:51,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:03:51,394 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:03:51,394 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:03:51,394 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:03:51,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:03:51,394 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:03:51,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:03:51,395 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:03:51,661 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:03:51,678 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:03:51,681 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:03:51,682 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:03:51,682 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:03:51,683 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i [2020-04-18 02:03:51,760 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1140630dc/8d0e15fa4d674b50923bd097af8471f2/FLAG31924a3dd [2020-04-18 02:03:52,259 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:03:52,260 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i [2020-04-18 02:03:52,283 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1140630dc/8d0e15fa4d674b50923bd097af8471f2/FLAG31924a3dd [2020-04-18 02:03:52,759 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1140630dc/8d0e15fa4d674b50923bd097af8471f2 [2020-04-18 02:03:52,768 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:03:52,785 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:03:52,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:03:52,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:03:52,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:03:52,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:03:52" (1/1) ... [2020-04-18 02:03:52,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@285793b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:03:52, skipping insertion in model container [2020-04-18 02:03:52,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:03:52" (1/1) ... [2020-04-18 02:03:52,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:03:52,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:03:53,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:03:53,338 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:03:53,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:03:53,471 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:03:53,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:03:53 WrapperNode [2020-04-18 02:03:53,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:03:53,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:03:53,473 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:03:53,473 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:03:53,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:03:53" (1/1) ... [2020-04-18 02:03:53,508 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:03:53" (1/1) ... [2020-04-18 02:03:53,532 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:03:53,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:03:53,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:03:53,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:03:53,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:03:53" (1/1) ... [2020-04-18 02:03:53,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:03:53" (1/1) ... [2020-04-18 02:03:53,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:03:53" (1/1) ... [2020-04-18 02:03:53,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:03:53" (1/1) ... [2020-04-18 02:03:53,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:03:53" (1/1) ... [2020-04-18 02:03:53,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:03:53" (1/1) ... [2020-04-18 02:03:53,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:03:53" (1/1) ... [2020-04-18 02:03:53,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:03:53,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:03:53,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:03:53,572 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:03:53,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:03:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:03:53,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:03:53,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:03:53,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:03:53,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:03:53,649 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:03:53,650 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:03:53,650 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:03:53,652 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:03:53,652 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:03:53,653 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:03:53,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:03:53,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:03:53,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:03:53,656 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 02:03:54,184 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:03:54,184 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:03:54,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:03:54 BoogieIcfgContainer [2020-04-18 02:03:54,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:03:54,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:03:54,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:03:54,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:03:54,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:03:52" (1/3) ... [2020-04-18 02:03:54,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@532c9e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:03:54, skipping insertion in model container [2020-04-18 02:03:54,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:03:53" (2/3) ... [2020-04-18 02:03:54,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@532c9e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:03:54, skipping insertion in model container [2020-04-18 02:03:54,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:03:54" (3/3) ... [2020-04-18 02:03:54,198 INFO L109 eAbstractionObserver]: Analyzing ICFG safe002_tso.oepc.i [2020-04-18 02:03:54,209 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:03:54,209 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:03:54,217 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:03:54,218 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:03:54,243 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:03:54,243 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:03:54,243 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:03:54,244 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:03:54,244 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:03:54,245 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:03:54,245 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:03:54,245 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:03:54,246 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:03:54,246 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:03:54,246 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:03:54,247 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:03:54,247 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:03:54,247 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:03:54,248 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:03:54,248 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:03:54,248 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:03:54,249 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:03:54,253 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:03:54,253 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:03:54,254 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:03:54,254 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:03:54,260 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:03:54,260 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:03:54,261 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:03:54,261 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:03:54,264 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:03:54,264 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:03:54,264 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:03:54,264 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:03:54,283 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:03:54,305 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:03:54,305 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:03:54,306 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:03:54,306 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:03:54,306 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:03:54,306 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:03:54,306 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:03:54,307 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:03:54,324 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 02:03:54,326 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:03:54,375 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:03:54,375 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:03:54,381 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:03:54,384 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:03:54,407 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:03:54,407 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:03:54,408 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:03:54,410 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 02:03:54,412 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:03:55,958 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 02:03:56,145 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-04-18 02:03:56,200 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-04-18 02:03:56,200 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-04-18 02:03:56,205 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 02:03:56,235 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 02:03:56,239 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 02:03:56,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:03:56,249 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:03:56,250 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:03:56,250 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:03:56,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:03:56,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-04-18 02:03:56,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:03:56,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536208369] [2020-04-18 02:03:56,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:03:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:03:56,565 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 02:03:56,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536208369] [2020-04-18 02:03:56,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:03:56,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:03:56,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820453297] [2020-04-18 02:03:56,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:03:56,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:03:56,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:03:56,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:03:56,589 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 02:03:56,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:03:56,639 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-18 02:03:56,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:03:56,641 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 02:03:56,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:03:56,658 INFO L225 Difference]: With dead ends: 282 [2020-04-18 02:03:56,658 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 02:03:56,660 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 02:03:56,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 02:03:56,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 02:03:56,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 02:03:56,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-18 02:03:56,728 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-18 02:03:56,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:03:56,729 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-18 02:03:56,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:03:56,729 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-18 02:03:56,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 02:03:56,731 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:03:56,731 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:03:56,731 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:03:56,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:03:56,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 1 times [2020-04-18 02:03:56,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:03:56,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125147820] [2020-04-18 02:03:56,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:03:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:03:56,818 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 02:03:56,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125147820] [2020-04-18 02:03:56,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:03:56,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:03:56,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826144118] [2020-04-18 02:03:56,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:03:56,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:03:56,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:03:56,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:03:56,822 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-04-18 02:03:56,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:03:56,857 INFO L93 Difference]: Finished difference Result 290 states and 762 transitions. [2020-04-18 02:03:56,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:03:56,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 02:03:56,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:03:56,861 INFO L225 Difference]: With dead ends: 290 [2020-04-18 02:03:56,861 INFO L226 Difference]: Without dead ends: 164 [2020-04-18 02:03:56,862 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 02:03:56,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-04-18 02:03:56,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-04-18 02:03:56,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-04-18 02:03:56,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 424 transitions. [2020-04-18 02:03:56,877 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 424 transitions. Word has length 9 [2020-04-18 02:03:56,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:03:56,878 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 424 transitions. [2020-04-18 02:03:56,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:03:56,878 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 424 transitions. [2020-04-18 02:03:56,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:03:56,879 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:03:56,879 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:03:56,880 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:03:56,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:03:56,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1379691760, now seen corresponding path program 1 times [2020-04-18 02:03:56,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:03:56,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816377496] [2020-04-18 02:03:56,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:03:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:03:56,964 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 02:03:56,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816377496] [2020-04-18 02:03:56,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:03:56,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:03:56,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716401144] [2020-04-18 02:03:56,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:03:56,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:03:56,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:03:56,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:03:56,967 INFO L87 Difference]: Start difference. First operand 164 states and 424 transitions. Second operand 4 states. [2020-04-18 02:03:57,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:03:57,019 INFO L93 Difference]: Finished difference Result 244 states and 582 transitions. [2020-04-18 02:03:57,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:03:57,020 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 02:03:57,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:03:57,022 INFO L225 Difference]: With dead ends: 244 [2020-04-18 02:03:57,023 INFO L226 Difference]: Without dead ends: 128 [2020-04-18 02:03:57,023 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 02:03:57,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-04-18 02:03:57,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 116. [2020-04-18 02:03:57,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-04-18 02:03:57,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 268 transitions. [2020-04-18 02:03:57,048 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 268 transitions. Word has length 11 [2020-04-18 02:03:57,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:03:57,048 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 268 transitions. [2020-04-18 02:03:57,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:03:57,049 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 268 transitions. [2020-04-18 02:03:57,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:03:57,050 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:03:57,050 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:03:57,050 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:03:57,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:03:57,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1517475135, now seen corresponding path program 1 times [2020-04-18 02:03:57,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:03:57,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60918548] [2020-04-18 02:03:57,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:03:57,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:03:57,134 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 02:03:57,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60918548] [2020-04-18 02:03:57,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:03:57,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:03:57,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288856096] [2020-04-18 02:03:57,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:03:57,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:03:57,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:03:57,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:03:57,137 INFO L87 Difference]: Start difference. First operand 116 states and 268 transitions. Second operand 4 states. [2020-04-18 02:03:57,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:03:57,182 INFO L93 Difference]: Finished difference Result 140 states and 310 transitions. [2020-04-18 02:03:57,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:03:57,184 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 02:03:57,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:03:57,185 INFO L225 Difference]: With dead ends: 140 [2020-04-18 02:03:57,185 INFO L226 Difference]: Without dead ends: 68 [2020-04-18 02:03:57,185 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 02:03:57,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-04-18 02:03:57,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-04-18 02:03:57,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-04-18 02:03:57,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-04-18 02:03:57,197 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 11 [2020-04-18 02:03:57,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:03:57,197 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-04-18 02:03:57,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:03:57,198 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-04-18 02:03:57,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:03:57,201 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:03:57,201 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:03:57,201 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:03:57,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:03:57,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 1 times [2020-04-18 02:03:57,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:03:57,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215990231] [2020-04-18 02:03:57,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:03:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:03:57,331 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 02:03:57,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215990231] [2020-04-18 02:03:57,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:03:57,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:03:57,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736522620] [2020-04-18 02:03:57,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:03:57,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:03:57,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:03:57,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:03:57,333 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-04-18 02:03:57,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:03:57,365 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-04-18 02:03:57,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:03:57,366 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-18 02:03:57,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:03:57,367 INFO L225 Difference]: With dead ends: 81 [2020-04-18 02:03:57,367 INFO L226 Difference]: Without dead ends: 59 [2020-04-18 02:03:57,368 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 02:03:57,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-04-18 02:03:57,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-04-18 02:03:57,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-04-18 02:03:57,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-04-18 02:03:57,371 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-04-18 02:03:57,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:03:57,372 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-04-18 02:03:57,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:03:57,372 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-04-18 02:03:57,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:03:57,373 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:03:57,373 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:03:57,373 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:03:57,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:03:57,374 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-04-18 02:03:57,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:03:57,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740559561] [2020-04-18 02:03:57,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:03:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:03:57,470 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 02:03:57,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740559561] [2020-04-18 02:03:57,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:03:57,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:03:57,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331738701] [2020-04-18 02:03:57,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:03:57,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:03:57,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:03:57,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:03:57,473 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-04-18 02:03:57,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:03:57,529 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-04-18 02:03:57,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:03:57,530 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-18 02:03:57,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:03:57,530 INFO L225 Difference]: With dead ends: 60 [2020-04-18 02:03:57,531 INFO L226 Difference]: Without dead ends: 45 [2020-04-18 02:03:57,531 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 02:03:57,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-04-18 02:03:57,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-04-18 02:03:57,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-04-18 02:03:57,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-04-18 02:03:57,540 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-04-18 02:03:57,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:03:57,540 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-04-18 02:03:57,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:03:57,540 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-04-18 02:03:57,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:03:57,541 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:03:57,545 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:03:57,545 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:03:57,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:03:57,545 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-04-18 02:03:57,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:03:57,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383380244] [2020-04-18 02:03:57,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:03:57,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:03:57,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:03:57,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383380244] [2020-04-18 02:03:57,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:03:57,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:03:57,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455343005] [2020-04-18 02:03:57,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:03:57,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:03:57,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:03:57,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:03:57,689 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-04-18 02:03:57,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:03:57,740 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-04-18 02:03:57,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 02:03:57,741 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-18 02:03:57,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:03:57,741 INFO L225 Difference]: With dead ends: 42 [2020-04-18 02:03:57,741 INFO L226 Difference]: Without dead ends: 36 [2020-04-18 02:03:57,742 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 02:03:57,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-18 02:03:57,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-18 02:03:57,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-18 02:03:57,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-04-18 02:03:57,745 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-04-18 02:03:57,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:03:57,746 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-04-18 02:03:57,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:03:57,746 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-04-18 02:03:57,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 02:03:57,748 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:03:57,748 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:03:57,749 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:03:57,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:03:57,749 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-04-18 02:03:57,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:03:57,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636003147] [2020-04-18 02:03:57,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:03:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:03:57,836 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 02:03:57,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636003147] [2020-04-18 02:03:57,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:03:57,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:03:57,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693147280] [2020-04-18 02:03:57,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:03:57,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:03:57,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:03:57,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:03:57,839 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-04-18 02:03:57,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:03:57,852 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-04-18 02:03:57,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:03:57,852 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-18 02:03:57,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:03:57,853 INFO L225 Difference]: With dead ends: 35 [2020-04-18 02:03:57,853 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:03:57,853 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 02:03:57,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:03:57,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:03:57,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:03:57,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:03:57,854 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 02:03:57,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:03:57,855 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:03:57,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:03:57,855 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:03:57,855 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:03:57,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:03:57 BasicIcfg [2020-04-18 02:03:57,859 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:03:57,861 INFO L168 Benchmark]: Toolchain (without parser) took 5091.55 ms. Allocated memory was 137.9 MB in the beginning and 249.0 MB in the end (delta: 111.1 MB). Free memory was 99.5 MB in the beginning and 195.8 MB in the end (delta: -96.2 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:03:57,862 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 137.9 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-18 02:03:57,863 INFO L168 Benchmark]: CACSL2BoogieTranslator took 686.39 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 97.6 MB in the beginning and 157.0 MB in the end (delta: -59.4 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-04-18 02:03:57,864 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.29 ms. Allocated memory is still 201.3 MB. Free memory was 157.0 MB in the beginning and 154.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:03:57,865 INFO L168 Benchmark]: Boogie Preprocessor took 38.96 ms. Allocated memory is still 201.3 MB. Free memory was 154.9 MB in the beginning and 153.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 02:03:57,865 INFO L168 Benchmark]: RCFGBuilder took 617.05 ms. Allocated memory is still 201.3 MB. Free memory was 153.6 MB in the beginning and 131.3 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-04-18 02:03:57,866 INFO L168 Benchmark]: TraceAbstraction took 3669.64 ms. Allocated memory was 201.3 MB in the beginning and 249.0 MB in the end (delta: 47.7 MB). Free memory was 130.6 MB in the beginning and 195.8 MB in the end (delta: -65.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:03:57,871 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 137.9 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 686.39 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 97.6 MB in the beginning and 157.0 MB in the end (delta: -59.4 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.29 ms. Allocated memory is still 201.3 MB. Free memory was 157.0 MB in the beginning and 154.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 38.96 ms. Allocated memory is still 201.3 MB. Free memory was 154.9 MB in the beginning and 153.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 617.05 ms. Allocated memory is still 201.3 MB. Free memory was 153.6 MB in the beginning and 131.3 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3669.64 ms. Allocated memory was 201.3 MB in the beginning and 249.0 MB in the end (delta: 47.7 MB). Free memory was 130.6 MB in the beginning and 195.8 MB in the end (delta: -65.2 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: 1.8s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 655 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2700 CheckedPairsTotal, 59 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 145 SDtfs, 140 SDslu, 178 SDs, 0 SdLazy, 112 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 3122 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...