/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/concurrent/pthreads/forkMultipleTimes.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 22:53:03,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 22:53:03,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 22:53:03,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 22:53:03,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 22:53:03,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 22:53:03,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 22:53:03,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 22:53:03,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 22:53:03,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 22:53:03,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 22:53:03,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 22:53:03,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 22:53:03,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 22:53:03,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 22:53:03,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 22:53:03,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 22:53:03,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 22:53:03,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 22:53:03,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 22:53:03,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 22:53:03,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 22:53:03,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 22:53:03,284 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 22:53:03,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 22:53:03,288 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 22:53:03,288 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 22:53:03,290 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 22:53:03,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 22:53:03,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 22:53:03,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 22:53:03,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 22:53:03,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 22:53:03,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 22:53:03,300 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 22:53:03,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 22:53:03,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 22:53:03,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 22:53:03,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 22:53:03,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 22:53:03,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 22:53:03,308 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-04-17 22:53:03,329 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 22:53:03,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 22:53:03,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 22:53:03,332 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 22:53:03,332 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 22:53:03,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 22:53:03,333 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 22:53:03,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 22:53:03,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 22:53:03,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 22:53:03,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 22:53:03,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 22:53:03,335 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 22:53:03,335 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 22:53:03,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 22:53:03,336 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 22:53:03,336 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 22:53:03,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 22:53:03,336 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 22:53:03,336 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 22:53:03,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 22:53:03,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:53:03,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 22:53:03,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 22:53:03,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 22:53:03,337 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 22:53:03,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 22:53:03,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 22:53:03,338 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 22:53:03,646 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 22:53:03,664 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 22:53:03,667 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 22:53:03,668 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 22:53:03,668 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 22:53:03,669 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/forkMultipleTimes.c [2020-04-17 22:53:03,745 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35456e55e/da26136a60fd44fb91b7517ecaddeb18/FLAGbab69d00c [2020-04-17 22:53:04,215 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 22:53:04,216 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/forkMultipleTimes.c [2020-04-17 22:53:04,216 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2020-04-17 22:53:04,216 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2020-04-17 22:53:04,267 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35456e55e/da26136a60fd44fb91b7517ecaddeb18/FLAGbab69d00c [2020-04-17 22:53:04,564 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35456e55e/da26136a60fd44fb91b7517ecaddeb18 [2020-04-17 22:53:04,574 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 22:53:04,595 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 22:53:04,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 22:53:04,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 22:53:04,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 22:53:04,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:53:04" (1/1) ... [2020-04-17 22:53:04,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb692de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:53:04, skipping insertion in model container [2020-04-17 22:53:04,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:53:04" (1/1) ... [2020-04-17 22:53:04,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 22:53:04,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 22:53:04,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:53:04,822 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 22:53:04,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:53:04,950 INFO L208 MainTranslator]: Completed translation [2020-04-17 22:53:04,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:53:04 WrapperNode [2020-04-17 22:53:04,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 22:53:04,952 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 22:53:04,952 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 22:53:04,952 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 22:53:04,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:53:04" (1/1) ... [2020-04-17 22:53:04,966 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:53:04" (1/1) ... [2020-04-17 22:53:04,984 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 22:53:04,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 22:53:04,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 22:53:04,985 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 22:53:04,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:53:04" (1/1) ... [2020-04-17 22:53:04,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:53:04" (1/1) ... [2020-04-17 22:53:04,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:53:04" (1/1) ... [2020-04-17 22:53:04,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:53:04" (1/1) ... [2020-04-17 22:53:04,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:53:04" (1/1) ... [2020-04-17 22:53:05,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:53:04" (1/1) ... [2020-04-17 22:53:05,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:53:04" (1/1) ... [2020-04-17 22:53:05,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 22:53:05,004 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 22:53:05,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 22:53:05,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 22:53:05,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:53:04" (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 [2020-04-17 22:53:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 22:53:05,062 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-04-17 22:53:05,062 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-04-17 22:53:05,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 22:53:05,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 22:53:05,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-04-17 22:53:05,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-04-17 22:53:05,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 22:53:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 22:53:05,064 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 22:53:05,383 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 22:53:05,383 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-04-17 22:53:05,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:53:05 BoogieIcfgContainer [2020-04-17 22:53:05,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 22:53:05,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 22:53:05,395 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 22:53:05,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 22:53:05,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 10:53:04" (1/3) ... [2020-04-17 22:53:05,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b2737f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:53:05, skipping insertion in model container [2020-04-17 22:53:05,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:53:04" (2/3) ... [2020-04-17 22:53:05,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b2737f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:53:05, skipping insertion in model container [2020-04-17 22:53:05,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:53:05" (3/3) ... [2020-04-17 22:53:05,407 INFO L109 eAbstractionObserver]: Analyzing ICFG forkMultipleTimes.c [2020-04-17 22:53:05,415 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 22:53:05,415 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 22:53:05,421 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 22:53:05,422 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 22:53:05,451 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,451 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,452 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,452 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,452 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,453 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,453 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,453 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,453 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,454 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,454 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,454 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,454 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,455 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,455 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,455 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,455 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,456 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,456 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,456 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,456 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,456 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,457 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,457 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,457 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,457 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,458 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,458 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,458 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,458 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,459 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,459 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,459 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,459 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,460 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,460 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,460 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,460 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,460 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,461 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,461 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,461 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,461 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,462 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,462 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,466 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,466 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,467 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,467 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,467 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,467 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,467 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,474 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,474 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,474 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,474 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,475 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,475 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,475 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,480 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,480 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,481 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,481 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,481 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,481 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,481 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:53:05,510 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 22:53:05,526 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 22:53:05,527 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 22:53:05,527 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 22:53:05,527 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 22:53:05,527 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 22:53:05,527 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 22:53:05,527 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 22:53:05,528 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 22:53:05,545 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 77 transitions, 196 flow [2020-04-17 22:53:05,546 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 81 places, 77 transitions, 196 flow [2020-04-17 22:53:05,616 INFO L129 PetriNetUnfolder]: 5/85 cut-off events. [2020-04-17 22:53:05,616 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-04-17 22:53:05,622 INFO L80 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 85 events. 5/85 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 114 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 50. Up to 6 conditions per place. [2020-04-17 22:53:05,627 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 81 places, 77 transitions, 196 flow [2020-04-17 22:53:05,692 INFO L129 PetriNetUnfolder]: 5/85 cut-off events. [2020-04-17 22:53:05,692 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-04-17 22:53:05,696 INFO L80 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 85 events. 5/85 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 114 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 50. Up to 6 conditions per place. [2020-04-17 22:53:05,701 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1008 [2020-04-17 22:53:05,702 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 22:53:07,156 WARN L192 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-04-17 22:53:07,266 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-04-17 22:53:07,305 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1623 [2020-04-17 22:53:07,305 INFO L214 etLargeBlockEncoding]: Total number of compositions: 43 [2020-04-17 22:53:07,309 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 35 transitions, 112 flow [2020-04-17 22:53:07,341 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 354 states. [2020-04-17 22:53:07,344 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states. [2020-04-17 22:53:07,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-17 22:53:07,372 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:53:07,373 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:53:07,374 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-04-17 22:53:07,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:53:07,382 INFO L82 PathProgramCache]: Analyzing trace with hash -126150362, now seen corresponding path program 1 times [2020-04-17 22:53:07,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:53:07,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885101446] [2020-04-17 22:53:07,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:53:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:53:07,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:53:07,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885101446] [2020-04-17 22:53:07,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:53:07,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-17 22:53:07,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149899474] [2020-04-17 22:53:07,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-17 22:53:07,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:53:07,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-17 22:53:07,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-04-17 22:53:07,829 INFO L87 Difference]: Start difference. First operand 354 states. Second operand 8 states. [2020-04-17 22:53:08,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:53:08,127 INFO L93 Difference]: Finished difference Result 449 states and 1088 transitions. [2020-04-17 22:53:08,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-17 22:53:08,129 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-04-17 22:53:08,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:53:08,148 INFO L225 Difference]: With dead ends: 449 [2020-04-17 22:53:08,148 INFO L226 Difference]: Without dead ends: 393 [2020-04-17 22:53:08,150 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-04-17 22:53:08,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-04-17 22:53:08,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 366. [2020-04-17 22:53:08,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-04-17 22:53:08,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 906 transitions. [2020-04-17 22:53:08,224 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 906 transitions. Word has length 25 [2020-04-17 22:53:08,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:53:08,226 INFO L479 AbstractCegarLoop]: Abstraction has 366 states and 906 transitions. [2020-04-17 22:53:08,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-17 22:53:08,226 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 906 transitions. [2020-04-17 22:53:08,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-17 22:53:08,229 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:53:08,229 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:53:08,229 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-04-17 22:53:08,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:53:08,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1342328380, now seen corresponding path program 1 times [2020-04-17 22:53:08,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:53:08,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486185961] [2020-04-17 22:53:08,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:53:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:53:09,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:53:09,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486185961] [2020-04-17 22:53:09,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:53:09,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-04-17 22:53:09,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666215345] [2020-04-17 22:53:09,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-17 22:53:09,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:53:09,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-17 22:53:09,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-04-17 22:53:09,166 INFO L87 Difference]: Start difference. First operand 366 states and 906 transitions. Second operand 14 states. [2020-04-17 22:53:09,760 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-04-17 22:53:09,954 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 39 [2020-04-17 22:53:10,091 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2020-04-17 22:53:10,761 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2020-04-17 22:53:10,977 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 47 [2020-04-17 22:53:11,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:53:11,449 INFO L93 Difference]: Finished difference Result 786 states and 1996 transitions. [2020-04-17 22:53:11,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-17 22:53:11,450 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 25 [2020-04-17 22:53:11,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:53:11,456 INFO L225 Difference]: With dead ends: 786 [2020-04-17 22:53:11,456 INFO L226 Difference]: Without dead ends: 780 [2020-04-17 22:53:11,458 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=233, Invalid=579, Unknown=0, NotChecked=0, Total=812 [2020-04-17 22:53:11,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2020-04-17 22:53:11,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 547. [2020-04-17 22:53:11,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-04-17 22:53:11,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 1409 transitions. [2020-04-17 22:53:11,495 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 1409 transitions. Word has length 25 [2020-04-17 22:53:11,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:53:11,495 INFO L479 AbstractCegarLoop]: Abstraction has 547 states and 1409 transitions. [2020-04-17 22:53:11,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-17 22:53:11,496 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 1409 transitions. [2020-04-17 22:53:11,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-17 22:53:11,498 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:53:11,498 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:53:11,499 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-04-17 22:53:11,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:53:11,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1285072000, now seen corresponding path program 1 times [2020-04-17 22:53:11,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:53:11,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806771303] [2020-04-17 22:53:11,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:53:11,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:53:11,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:53:11,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806771303] [2020-04-17 22:53:11,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:53:11,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-04-17 22:53:11,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174046721] [2020-04-17 22:53:11,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-04-17 22:53:11,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:53:11,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-17 22:53:11,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-04-17 22:53:11,898 INFO L87 Difference]: Start difference. First operand 547 states and 1409 transitions. Second operand 17 states. [2020-04-17 22:53:13,569 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 47 [2020-04-17 22:53:14,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:53:14,434 INFO L93 Difference]: Finished difference Result 740 states and 1846 transitions. [2020-04-17 22:53:14,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-04-17 22:53:14,435 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-04-17 22:53:14,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:53:14,441 INFO L225 Difference]: With dead ends: 740 [2020-04-17 22:53:14,441 INFO L226 Difference]: Without dead ends: 727 [2020-04-17 22:53:14,442 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=444, Invalid=1536, Unknown=0, NotChecked=0, Total=1980 [2020-04-17 22:53:14,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2020-04-17 22:53:14,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 613. [2020-04-17 22:53:14,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-04-17 22:53:14,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 1564 transitions. [2020-04-17 22:53:14,464 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 1564 transitions. Word has length 25 [2020-04-17 22:53:14,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:53:14,465 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 1564 transitions. [2020-04-17 22:53:14,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-04-17 22:53:14,465 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 1564 transitions. [2020-04-17 22:53:14,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-17 22:53:14,467 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:53:14,467 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:53:14,468 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-04-17 22:53:14,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:53:14,468 INFO L82 PathProgramCache]: Analyzing trace with hash -421440302, now seen corresponding path program 2 times [2020-04-17 22:53:14,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:53:14,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866710883] [2020-04-17 22:53:14,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:53:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:53:14,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:53:14,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866710883] [2020-04-17 22:53:14,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:53:14,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-04-17 22:53:14,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895357388] [2020-04-17 22:53:14,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-04-17 22:53:14,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:53:14,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-17 22:53:14,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-04-17 22:53:14,853 INFO L87 Difference]: Start difference. First operand 613 states and 1564 transitions. Second operand 17 states. [2020-04-17 22:53:16,022 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 42 [2020-04-17 22:53:17,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:53:17,024 INFO L93 Difference]: Finished difference Result 730 states and 1831 transitions. [2020-04-17 22:53:17,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-04-17 22:53:17,029 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-04-17 22:53:17,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:53:17,034 INFO L225 Difference]: With dead ends: 730 [2020-04-17 22:53:17,034 INFO L226 Difference]: Without dead ends: 712 [2020-04-17 22:53:17,035 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=367, Invalid=1273, Unknown=0, NotChecked=0, Total=1640 [2020-04-17 22:53:17,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2020-04-17 22:53:17,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 605. [2020-04-17 22:53:17,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-04-17 22:53:17,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 1547 transitions. [2020-04-17 22:53:17,054 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 1547 transitions. Word has length 25 [2020-04-17 22:53:17,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:53:17,055 INFO L479 AbstractCegarLoop]: Abstraction has 605 states and 1547 transitions. [2020-04-17 22:53:17,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-04-17 22:53:17,055 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 1547 transitions. [2020-04-17 22:53:17,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-17 22:53:17,057 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:53:17,057 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:53:17,058 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-04-17 22:53:17,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:53:17,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1646732586, now seen corresponding path program 3 times [2020-04-17 22:53:17,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:53:17,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834597975] [2020-04-17 22:53:17,059 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:53:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:53:17,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:53:17,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834597975] [2020-04-17 22:53:17,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:53:17,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-04-17 22:53:17,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713413874] [2020-04-17 22:53:17,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-17 22:53:17,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:53:17,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-17 22:53:17,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-04-17 22:53:17,557 INFO L87 Difference]: Start difference. First operand 605 states and 1547 transitions. Second operand 16 states. [2020-04-17 22:53:18,077 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2020-04-17 22:53:18,252 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2020-04-17 22:53:18,409 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 53 [2020-04-17 22:53:18,600 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2020-04-17 22:53:18,770 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2020-04-17 22:53:19,024 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 63 [2020-04-17 22:53:19,361 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2020-04-17 22:53:19,497 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2020-04-17 22:53:19,750 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 56 [2020-04-17 22:53:19,934 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 56 [2020-04-17 22:53:20,130 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 57 [2020-04-17 22:53:20,381 WARN L192 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 62 [2020-04-17 22:53:21,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:53:21,996 INFO L93 Difference]: Finished difference Result 1234 states and 2914 transitions. [2020-04-17 22:53:21,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-04-17 22:53:21,996 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-17 22:53:21,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:53:22,004 INFO L225 Difference]: With dead ends: 1234 [2020-04-17 22:53:22,005 INFO L226 Difference]: Without dead ends: 1193 [2020-04-17 22:53:22,006 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=698, Invalid=1372, Unknown=0, NotChecked=0, Total=2070 [2020-04-17 22:53:22,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2020-04-17 22:53:22,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 620. [2020-04-17 22:53:22,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2020-04-17 22:53:22,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 1574 transitions. [2020-04-17 22:53:22,028 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 1574 transitions. Word has length 25 [2020-04-17 22:53:22,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:53:22,028 INFO L479 AbstractCegarLoop]: Abstraction has 620 states and 1574 transitions. [2020-04-17 22:53:22,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-17 22:53:22,028 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 1574 transitions. [2020-04-17 22:53:22,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-17 22:53:22,030 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:53:22,031 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:53:22,031 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-04-17 22:53:22,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:53:22,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1982583190, now seen corresponding path program 1 times [2020-04-17 22:53:22,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:53:22,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563741068] [2020-04-17 22:53:22,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:53:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:53:22,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:53:22,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563741068] [2020-04-17 22:53:22,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:53:22,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-04-17 22:53:22,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89118491] [2020-04-17 22:53:22,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-17 22:53:22,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:53:22,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-17 22:53:22,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-04-17 22:53:22,622 INFO L87 Difference]: Start difference. First operand 620 states and 1574 transitions. Second operand 14 states. [2020-04-17 22:53:23,565 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 52 [2020-04-17 22:53:23,990 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 43 [2020-04-17 22:53:24,529 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2020-04-17 22:53:24,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:53:24,844 INFO L93 Difference]: Finished difference Result 1054 states and 2612 transitions. [2020-04-17 22:53:24,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-17 22:53:24,844 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 25 [2020-04-17 22:53:24,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:53:24,853 INFO L225 Difference]: With dead ends: 1054 [2020-04-17 22:53:24,853 INFO L226 Difference]: Without dead ends: 1048 [2020-04-17 22:53:24,854 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=275, Invalid=717, Unknown=0, NotChecked=0, Total=992 [2020-04-17 22:53:24,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2020-04-17 22:53:24,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 787. [2020-04-17 22:53:24,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 787 states. [2020-04-17 22:53:24,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 2044 transitions. [2020-04-17 22:53:24,881 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 2044 transitions. Word has length 25 [2020-04-17 22:53:24,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:53:24,882 INFO L479 AbstractCegarLoop]: Abstraction has 787 states and 2044 transitions. [2020-04-17 22:53:24,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-17 22:53:24,882 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 2044 transitions. [2020-04-17 22:53:24,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-17 22:53:24,888 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:53:24,888 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:53:24,888 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-04-17 22:53:24,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:53:24,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1689584038, now seen corresponding path program 1 times [2020-04-17 22:53:24,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:53:24,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411091832] [2020-04-17 22:53:24,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:53:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 22:53:24,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 22:53:25,009 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-17 22:53:25,009 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-17 22:53:25,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 10:53:25 BasicIcfg [2020-04-17 22:53:25,107 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 22:53:25,109 INFO L168 Benchmark]: Toolchain (without parser) took 20533.65 ms. Allocated memory was 142.1 MB in the beginning and 408.9 MB in the end (delta: 266.9 MB). Free memory was 98.7 MB in the beginning and 251.1 MB in the end (delta: -152.4 MB). Peak memory consumption was 114.5 MB. Max. memory is 7.1 GB. [2020-04-17 22:53:25,110 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 142.1 MB. Free memory was 118.4 MB in the beginning and 118.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-17 22:53:25,112 INFO L168 Benchmark]: CACSL2BoogieTranslator took 355.20 ms. Allocated memory was 142.1 MB in the beginning and 200.8 MB in the end (delta: 58.7 MB). Free memory was 96.7 MB in the beginning and 178.8 MB in the end (delta: -82.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. [2020-04-17 22:53:25,113 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.80 ms. Allocated memory is still 200.8 MB. Free memory was 178.8 MB in the beginning and 177.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2020-04-17 22:53:25,114 INFO L168 Benchmark]: Boogie Preprocessor took 19.50 ms. Allocated memory is still 200.8 MB. Free memory was 177.3 MB in the beginning and 175.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-17 22:53:25,117 INFO L168 Benchmark]: RCFGBuilder took 383.34 ms. Allocated memory is still 200.8 MB. Free memory was 175.5 MB in the beginning and 157.7 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. [2020-04-17 22:53:25,119 INFO L168 Benchmark]: TraceAbstraction took 19712.17 ms. Allocated memory was 200.8 MB in the beginning and 408.9 MB in the end (delta: 208.1 MB). Free memory was 157.0 MB in the beginning and 251.1 MB in the end (delta: -94.1 MB). Peak memory consumption was 114.1 MB. Max. memory is 7.1 GB. [2020-04-17 22:53:25,125 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 142.1 MB. Free memory was 118.4 MB in the beginning and 118.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 355.20 ms. Allocated memory was 142.1 MB in the beginning and 200.8 MB in the end (delta: 58.7 MB). Free memory was 96.7 MB in the beginning and 178.8 MB in the end (delta: -82.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 32.80 ms. Allocated memory is still 200.8 MB. Free memory was 178.8 MB in the beginning and 177.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 19.50 ms. Allocated memory is still 200.8 MB. Free memory was 177.3 MB in the beginning and 175.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 383.34 ms. Allocated memory is still 200.8 MB. Free memory was 175.5 MB in the beginning and 157.7 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 19712.17 ms. Allocated memory was 200.8 MB in the beginning and 408.9 MB in the end (delta: 208.1 MB). Free memory was 157.0 MB in the beginning and 251.1 MB in the end (delta: -94.1 MB). Peak memory consumption was 114.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 81 ProgramPointsBefore, 39 ProgramPointsAfterwards, 77 TransitionsBefore, 35 TransitionsAfterwards, 1008 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 495 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 1623 CheckedPairsTotal, 43 TotalNumberOfCompositions - CounterExampleResult [Line: 37]: assertion can be violated assertion can be violated We found a FailurePath: [L13] 0 int counter = 0; [L23] 0 int val = 0; [L25] 0 pthread_t first_thread_id; [L26] 0 pthread_t second_thread_id; [L27] 0 pthread_t third_thread_id; [L29] FCALL, FORK 0 pthread_create(&first_thread_id, NULL, foo, &val) VAL [counter=0, n={7:0}] [L30] FCALL, FORK 0 pthread_create(&second_thread_id, NULL, foo, &val) VAL [counter=0, n={7:0}] [L16] 2 int *x = (int *)n; [L17] 2 ++counter VAL [++counter=1, counter=0, n={7:0}, n={7:0}, x={7:0}] [L31] FCALL, FORK 0 pthread_create(&third_thread_id, NULL, foo, &val) VAL [++counter=1, counter=0, n={7:0}, n={7:0}, x={7:0}] [L16] 3 int *x = (int *)n; [L17] EXPR 3 ++counter VAL [++counter=1, counter=1, n={7:0}, n={7:0}, x={7:0}] [L17] 3 *x = ++counter [L18] 3 return 0; [L17] 2 ++counter VAL [++counter=1, \result={0:0}, counter=2, n={7:0}, n={7:0}, x={7:0}] [L16] 1 int *x = (int *)n; [L17] EXPR 1 ++counter VAL [++counter=3, \result={0:0}, counter=3, n={7:0}, n={7:0}, x={7:0}] [L33] 0 \read(first_thread_id) VAL [++counter=3, \result={0:0}, counter=3, n={7:0}, n={7:0}, x={7:0}] [L17] 1 *x = ++counter [L18] 1 return 0; [L17] 2 *x = ++counter [L18] 2 return 0; [L33] FCALL, JOIN 1 pthread_join(first_thread_id, NULL) VAL [\result={0:0}, counter=3, n={7:0}, n={7:0}, x={7:0}] [L34] 0 \read(second_thread_id) VAL [\result={0:0}, counter=3, n={7:0}, n={7:0}, x={7:0}] [L34] FCALL, JOIN 2 pthread_join(second_thread_id, NULL) VAL [\result={0:0}, counter=3, n={7:0}, n={7:0}, x={7:0}] [L35] 0 \read(third_thread_id) VAL [\result={0:0}, counter=3, n={7:0}, n={7:0}, x={7:0}] [L35] FCALL, JOIN 3 pthread_join(third_thread_id, NULL) VAL [\result={0:0}, counter=3, n={7:0}, n={7:0}, x={7:0}] [L37] FCALL 0 IdentifierExpression[val] [L37] 0 CodeAnnotStmt[Assertion] VAL [\result={0:0}, counter=3, n={7:0}, n={7:0}, x={7:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 19.4s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 14.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 241 SDtfs, 1610 SDslu, 1251 SDs, 0 SdLazy, 3162 SolverSat, 333 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 197 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 11.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=787occurred in iteration=6, 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, 6 MinimizatonAttempts, 1315 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 175 NumberOfCodeBlocks, 175 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 93336 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 incorrect! Received shutdown request...