/usr/bin/java -Xmx16000000000 -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 0.1.25-7bb8cbd [2020-10-15 23:17:34,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 23:17:34,235 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 23:17:34,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 23:17:34,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 23:17:34,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 23:17:34,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 23:17:34,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 23:17:34,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 23:17:34,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 23:17:34,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 23:17:34,297 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 23:17:34,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 23:17:34,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 23:17:34,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 23:17:34,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 23:17:34,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 23:17:34,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 23:17:34,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 23:17:34,317 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 23:17:34,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 23:17:34,319 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 23:17:34,320 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 23:17:34,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 23:17:34,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 23:17:34,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 23:17:34,332 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 23:17:34,333 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 23:17:34,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 23:17:34,337 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 23:17:34,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 23:17:34,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 23:17:34,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 23:17:34,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 23:17:34,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 23:17:34,344 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 23:17:34,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 23:17:34,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 23:17:34,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 23:17:34,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 23:17:34,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 23:17:34,348 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 [2020-10-15 23:17:34,390 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 23:17:34,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 23:17:34,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 23:17:34,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 23:17:34,394 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 23:17:34,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 23:17:34,394 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 23:17:34,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 23:17:34,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 23:17:34,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 23:17:34,396 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 23:17:34,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 23:17:34,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 23:17:34,397 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 23:17:34,397 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 23:17:34,397 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 23:17:34,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 23:17:34,398 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 23:17:34,398 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 23:17:34,399 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 23:17:34,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 23:17:34,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 23:17:34,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 23:17:34,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 23:17:34,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 23:17:34,404 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 23:17:34,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 23:17:34,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 23:17:34,404 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 23:17:34,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 23:17:34,699 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 23:17:34,702 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 23:17:34,704 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 23:17:34,704 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 23:17:34,705 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/forkMultipleTimes.c [2020-10-15 23:17:34,764 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6a8fa75a/04eb60688762475f923ab0b16c4c9ca2/FLAG76b9506cd [2020-10-15 23:17:35,138 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 23:17:35,139 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/forkMultipleTimes.c [2020-10-15 23:17:35,140 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-15 23:17:35,140 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-15 23:17:35,174 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6a8fa75a/04eb60688762475f923ab0b16c4c9ca2/FLAG76b9506cd [2020-10-15 23:17:35,579 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6a8fa75a/04eb60688762475f923ab0b16c4c9ca2 [2020-10-15 23:17:35,587 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 23:17:35,588 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 23:17:35,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 23:17:35,589 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 23:17:35,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 23:17:35,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 11:17:35" (1/1) ... [2020-10-15 23:17:35,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@655021b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:17:35, skipping insertion in model container [2020-10-15 23:17:35,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 11:17:35" (1/1) ... [2020-10-15 23:17:35,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 23:17:35,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 23:17:35,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 23:17:35,808 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 23:17:35,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 23:17:36,005 INFO L208 MainTranslator]: Completed translation [2020-10-15 23:17:36,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:17:36 WrapperNode [2020-10-15 23:17:36,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 23:17:36,008 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 23:17:36,008 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 23:17:36,008 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 23:17:36,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:17:36" (1/1) ... [2020-10-15 23:17:36,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:17:36" (1/1) ... [2020-10-15 23:17:36,056 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 23:17:36,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 23:17:36,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 23:17:36,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 23:17:36,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:17:36" (1/1) ... [2020-10-15 23:17:36,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:17:36" (1/1) ... [2020-10-15 23:17:36,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:17:36" (1/1) ... [2020-10-15 23:17:36,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:17:36" (1/1) ... [2020-10-15 23:17:36,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:17:36" (1/1) ... [2020-10-15 23:17:36,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:17:36" (1/1) ... [2020-10-15 23:17:36,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:17:36" (1/1) ... [2020-10-15 23:17:36,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 23:17:36,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 23:17:36,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 23:17:36,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 23:17:36,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:17:36" (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 [2020-10-15 23:17:36,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 23:17:36,183 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-10-15 23:17:36,184 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-10-15 23:17:36,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 23:17:36,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 23:17:36,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 23:17:36,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-15 23:17:36,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 23:17:36,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 23:17:36,189 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 23:17:36,484 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 23:17:36,485 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-15 23:17:36,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 11:17:36 BoogieIcfgContainer [2020-10-15 23:17:36,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 23:17:36,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 23:17:36,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 23:17:36,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 23:17:36,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 11:17:35" (1/3) ... [2020-10-15 23:17:36,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@221f298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 11:17:36, skipping insertion in model container [2020-10-15 23:17:36,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:17:36" (2/3) ... [2020-10-15 23:17:36,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@221f298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 11:17:36, skipping insertion in model container [2020-10-15 23:17:36,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 11:17:36" (3/3) ... [2020-10-15 23:17:36,496 INFO L111 eAbstractionObserver]: Analyzing ICFG forkMultipleTimes.c [2020-10-15 23:17:36,509 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 23:17:36,509 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 23:17:36,517 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 23:17:36,518 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 23:17:36,573 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,574 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,574 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,574 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,574 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,574 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,575 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,575 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,575 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,576 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,576 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,576 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,577 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,577 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,577 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,578 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,578 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,579 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,579 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,579 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,579 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,580 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,580 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,580 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,581 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,581 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,581 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,582 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,582 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,582 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,583 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,583 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,583 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,583 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,584 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,584 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,584 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,584 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,584 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,585 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,585 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,585 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,585 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,586 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,586 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,590 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,591 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,591 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,592 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,592 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,592 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,592 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,598 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,599 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,599 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,599 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,600 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,600 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,600 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,604 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,604 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,605 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,605 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,605 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,605 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,606 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:17:36,639 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-15 23:17:36,661 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 23:17:36,661 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 23:17:36,661 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 23:17:36,662 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 23:17:36,662 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 23:17:36,662 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 23:17:36,662 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 23:17:36,662 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 23:17:36,680 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 23:17:36,683 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 77 transitions, 196 flow [2020-10-15 23:17:36,686 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 77 transitions, 196 flow [2020-10-15 23:17:36,689 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 81 places, 77 transitions, 196 flow [2020-10-15 23:17:36,787 INFO L129 PetriNetUnfolder]: 5/85 cut-off events. [2020-10-15 23:17:36,788 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-10-15 23:17:36,797 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. [2020-10-15 23:17:36,804 INFO L117 LiptonReduction]: Number of co-enabled transitions 1008 [2020-10-15 23:17:38,382 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-10-15 23:17:38,497 INFO L132 LiptonReduction]: Checked pairs total: 4010 [2020-10-15 23:17:38,497 INFO L134 LiptonReduction]: Total number of compositions: 43 [2020-10-15 23:17:38,504 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 35 transitions, 112 flow [2020-10-15 23:17:38,534 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 354 states. [2020-10-15 23:17:38,537 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states. [2020-10-15 23:17:38,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:17:38,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:17:38,555 INFO L422 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] [2020-10-15 23:17:38,555 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 23:17:38,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:17:38,561 INFO L82 PathProgramCache]: Analyzing trace with hash -126150362, now seen corresponding path program 1 times [2020-10-15 23:17:38,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:17:38,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975070564] [2020-10-15 23:17:38,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:17:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:17:39,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:17:39,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975070564] [2020-10-15 23:17:39,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:17:39,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 23:17:39,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997430983] [2020-10-15 23:17:39,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:17:39,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:17:39,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:17:39,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:17:39,245 INFO L87 Difference]: Start difference. First operand 354 states. Second operand 12 states. [2020-10-15 23:17:40,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:17:40,320 INFO L93 Difference]: Finished difference Result 748 states and 1901 transitions. [2020-10-15 23:17:40,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 23:17:40,323 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2020-10-15 23:17:40,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:17:40,348 INFO L225 Difference]: With dead ends: 748 [2020-10-15 23:17:40,348 INFO L226 Difference]: Without dead ends: 740 [2020-10-15 23:17:40,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2020-10-15 23:17:40,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2020-10-15 23:17:40,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 487. [2020-10-15 23:17:40,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2020-10-15 23:17:40,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 1246 transitions. [2020-10-15 23:17:40,453 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 1246 transitions. Word has length 25 [2020-10-15 23:17:40,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:17:40,455 INFO L481 AbstractCegarLoop]: Abstraction has 487 states and 1246 transitions. [2020-10-15 23:17:40,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:17:40,455 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 1246 transitions. [2020-10-15 23:17:40,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:17:40,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:17:40,467 INFO L422 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] [2020-10-15 23:17:40,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 23:17:40,468 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 23:17:40,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:17:40,469 INFO L82 PathProgramCache]: Analyzing trace with hash -63589262, now seen corresponding path program 2 times [2020-10-15 23:17:40,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:17:40,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499617071] [2020-10-15 23:17:40,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:17:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:17:40,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:17:40,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499617071] [2020-10-15 23:17:40,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:17:40,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-15 23:17:40,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885146896] [2020-10-15 23:17:40,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:17:40,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:17:40,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:17:40,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:17:40,997 INFO L87 Difference]: Start difference. First operand 487 states and 1246 transitions. Second operand 16 states. [2020-10-15 23:17:43,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:17:43,953 INFO L93 Difference]: Finished difference Result 1252 states and 3200 transitions. [2020-10-15 23:17:43,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-15 23:17:43,954 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:17:43,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:17:43,963 INFO L225 Difference]: With dead ends: 1252 [2020-10-15 23:17:43,963 INFO L226 Difference]: Without dead ends: 1243 [2020-10-15 23:17:43,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=322, Invalid=1570, Unknown=0, NotChecked=0, Total=1892 [2020-10-15 23:17:43,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2020-10-15 23:17:43,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 560. [2020-10-15 23:17:43,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-10-15 23:17:44,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1408 transitions. [2020-10-15 23:17:44,000 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1408 transitions. Word has length 25 [2020-10-15 23:17:44,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:17:44,001 INFO L481 AbstractCegarLoop]: Abstraction has 560 states and 1408 transitions. [2020-10-15 23:17:44,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:17:44,001 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1408 transitions. [2020-10-15 23:17:44,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:17:44,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:17:44,004 INFO L422 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] [2020-10-15 23:17:44,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 23:17:44,004 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 23:17:44,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:17:44,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1895995450, now seen corresponding path program 1 times [2020-10-15 23:17:44,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:17:44,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402947915] [2020-10-15 23:17:44,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:17:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:17:44,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:17:44,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402947915] [2020-10-15 23:17:44,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:17:44,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-15 23:17:44,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426823910] [2020-10-15 23:17:44,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 23:17:44,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:17:44,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 23:17:44,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-15 23:17:44,544 INFO L87 Difference]: Start difference. First operand 560 states and 1408 transitions. Second operand 13 states. [2020-10-15 23:17:45,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:17:45,431 INFO L93 Difference]: Finished difference Result 683 states and 1739 transitions. [2020-10-15 23:17:45,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 23:17:45,432 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2020-10-15 23:17:45,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:17:45,436 INFO L225 Difference]: With dead ends: 683 [2020-10-15 23:17:45,436 INFO L226 Difference]: Without dead ends: 675 [2020-10-15 23:17:45,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-10-15 23:17:45,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2020-10-15 23:17:45,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 639. [2020-10-15 23:17:45,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-10-15 23:17:45,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1623 transitions. [2020-10-15 23:17:45,459 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1623 transitions. Word has length 25 [2020-10-15 23:17:45,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:17:45,460 INFO L481 AbstractCegarLoop]: Abstraction has 639 states and 1623 transitions. [2020-10-15 23:17:45,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 23:17:45,460 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1623 transitions. [2020-10-15 23:17:45,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:17:45,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:17:45,463 INFO L422 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] [2020-10-15 23:17:45,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 23:17:45,463 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 23:17:45,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:17:45,463 INFO L82 PathProgramCache]: Analyzing trace with hash 374980096, now seen corresponding path program 2 times [2020-10-15 23:17:45,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:17:45,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14632146] [2020-10-15 23:17:45,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:17:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:17:45,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:17:45,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14632146] [2020-10-15 23:17:45,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:17:45,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-15 23:17:45,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042330829] [2020-10-15 23:17:45,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 23:17:45,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:17:45,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 23:17:45,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2020-10-15 23:17:45,988 INFO L87 Difference]: Start difference. First operand 639 states and 1623 transitions. Second operand 17 states. [2020-10-15 23:17:49,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:17:49,351 INFO L93 Difference]: Finished difference Result 1378 states and 3442 transitions. [2020-10-15 23:17:49,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-15 23:17:49,352 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-15 23:17:49,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:17:49,361 INFO L225 Difference]: With dead ends: 1378 [2020-10-15 23:17:49,361 INFO L226 Difference]: Without dead ends: 1360 [2020-10-15 23:17:49,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=372, Invalid=1980, Unknown=0, NotChecked=0, Total=2352 [2020-10-15 23:17:49,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2020-10-15 23:17:49,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 727. [2020-10-15 23:17:49,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-10-15 23:17:49,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1860 transitions. [2020-10-15 23:17:49,394 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1860 transitions. Word has length 25 [2020-10-15 23:17:49,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:17:49,394 INFO L481 AbstractCegarLoop]: Abstraction has 727 states and 1860 transitions. [2020-10-15 23:17:49,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 23:17:49,394 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1860 transitions. [2020-10-15 23:17:49,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:17:49,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:17:49,397 INFO L422 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] [2020-10-15 23:17:49,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 23:17:49,398 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 23:17:49,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:17:49,398 INFO L82 PathProgramCache]: Analyzing trace with hash 284319048, now seen corresponding path program 1 times [2020-10-15 23:17:49,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:17:49,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667363497] [2020-10-15 23:17:49,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:17:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:17:49,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:17:49,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667363497] [2020-10-15 23:17:49,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:17:49,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 23:17:49,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649549644] [2020-10-15 23:17:49,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 23:17:49,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:17:49,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 23:17:49,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 23:17:49,512 INFO L87 Difference]: Start difference. First operand 727 states and 1860 transitions. Second operand 8 states. [2020-10-15 23:17:49,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:17:49,680 INFO L93 Difference]: Finished difference Result 912 states and 2286 transitions. [2020-10-15 23:17:49,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 23:17:49,680 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-10-15 23:17:49,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:17:49,686 INFO L225 Difference]: With dead ends: 912 [2020-10-15 23:17:49,687 INFO L226 Difference]: Without dead ends: 773 [2020-10-15 23:17:49,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:17:49,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2020-10-15 23:17:49,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 704. [2020-10-15 23:17:49,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2020-10-15 23:17:49,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1796 transitions. [2020-10-15 23:17:49,707 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1796 transitions. Word has length 25 [2020-10-15 23:17:49,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:17:49,707 INFO L481 AbstractCegarLoop]: Abstraction has 704 states and 1796 transitions. [2020-10-15 23:17:49,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 23:17:49,708 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1796 transitions. [2020-10-15 23:17:49,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:17:49,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:17:49,710 INFO L422 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] [2020-10-15 23:17:49,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 23:17:49,711 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 23:17:49,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:17:49,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1342328380, now seen corresponding path program 1 times [2020-10-15 23:17:49,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:17:49,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879002450] [2020-10-15 23:17:49,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:17:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:17:50,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:17:50,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879002450] [2020-10-15 23:17:50,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:17:50,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-15 23:17:50,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086799822] [2020-10-15 23:17:50,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 23:17:50,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:17:50,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 23:17:50,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-15 23:17:50,186 INFO L87 Difference]: Start difference. First operand 704 states and 1796 transitions. Second operand 14 states. [2020-10-15 23:17:52,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:17:52,119 INFO L93 Difference]: Finished difference Result 1088 states and 2765 transitions. [2020-10-15 23:17:52,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 23:17:52,119 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 25 [2020-10-15 23:17:52,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:17:52,127 INFO L225 Difference]: With dead ends: 1088 [2020-10-15 23:17:52,127 INFO L226 Difference]: Without dead ends: 1082 [2020-10-15 23:17:52,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=289, Invalid=833, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 23:17:52,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2020-10-15 23:17:52,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 771. [2020-10-15 23:17:52,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 771 states. [2020-10-15 23:17:52,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1992 transitions. [2020-10-15 23:17:52,150 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1992 transitions. Word has length 25 [2020-10-15 23:17:52,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:17:52,151 INFO L481 AbstractCegarLoop]: Abstraction has 771 states and 1992 transitions. [2020-10-15 23:17:52,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 23:17:52,151 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1992 transitions. [2020-10-15 23:17:52,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:17:52,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:17:52,154 INFO L422 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] [2020-10-15 23:17:52,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 23:17:52,154 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 23:17:52,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:17:52,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1285072000, now seen corresponding path program 1 times [2020-10-15 23:17:52,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:17:52,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118411866] [2020-10-15 23:17:52,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:17:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:17:52,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:17:52,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118411866] [2020-10-15 23:17:52,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:17:52,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-15 23:17:52,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832979886] [2020-10-15 23:17:52,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 23:17:52,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:17:52,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 23:17:52,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-10-15 23:17:52,532 INFO L87 Difference]: Start difference. First operand 771 states and 1992 transitions. Second operand 17 states. [2020-10-15 23:17:53,306 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-10-15 23:17:53,772 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-15 23:17:54,605 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2020-10-15 23:17:54,735 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2020-10-15 23:17:54,917 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-15 23:17:55,114 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-10-15 23:17:55,745 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2020-10-15 23:17:56,008 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-10-15 23:17:56,144 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-10-15 23:17:56,644 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2020-10-15 23:17:56,838 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-10-15 23:17:57,011 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2020-10-15 23:17:58,008 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-15 23:17:58,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:17:58,380 INFO L93 Difference]: Finished difference Result 1437 states and 3539 transitions. [2020-10-15 23:17:58,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-15 23:17:58,380 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-15 23:17:58,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:17:58,390 INFO L225 Difference]: With dead ends: 1437 [2020-10-15 23:17:58,390 INFO L226 Difference]: Without dead ends: 1424 [2020-10-15 23:17:58,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1144 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=898, Invalid=3524, Unknown=0, NotChecked=0, Total=4422 [2020-10-15 23:17:58,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2020-10-15 23:17:58,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 872. [2020-10-15 23:17:58,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 872 states. [2020-10-15 23:17:58,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 2245 transitions. [2020-10-15 23:17:58,419 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 2245 transitions. Word has length 25 [2020-10-15 23:17:58,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:17:58,419 INFO L481 AbstractCegarLoop]: Abstraction has 872 states and 2245 transitions. [2020-10-15 23:17:58,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 23:17:58,420 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 2245 transitions. [2020-10-15 23:17:58,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:17:58,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:17:58,423 INFO L422 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] [2020-10-15 23:17:58,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 23:17:58,423 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 23:17:58,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:17:58,423 INFO L82 PathProgramCache]: Analyzing trace with hash -421440302, now seen corresponding path program 2 times [2020-10-15 23:17:58,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:17:58,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712377776] [2020-10-15 23:17:58,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:17:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:17:58,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:17:58,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712377776] [2020-10-15 23:17:58,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:17:58,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-15 23:17:58,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75658206] [2020-10-15 23:17:58,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 23:17:58,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:17:58,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 23:17:58,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-10-15 23:17:58,772 INFO L87 Difference]: Start difference. First operand 872 states and 2245 transitions. Second operand 17 states. [2020-10-15 23:17:59,563 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-10-15 23:18:00,018 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-15 23:18:00,852 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2020-10-15 23:18:01,156 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-15 23:18:01,355 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-10-15 23:18:02,007 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2020-10-15 23:18:02,295 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-10-15 23:18:02,434 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-10-15 23:18:02,676 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2020-10-15 23:18:02,986 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2020-10-15 23:18:03,182 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-10-15 23:18:03,357 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2020-10-15 23:18:04,461 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-15 23:18:04,638 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-10-15 23:18:04,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:18:04,784 INFO L93 Difference]: Finished difference Result 1438 states and 3539 transitions. [2020-10-15 23:18:04,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-15 23:18:04,784 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-15 23:18:04,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:18:04,792 INFO L225 Difference]: With dead ends: 1438 [2020-10-15 23:18:04,792 INFO L226 Difference]: Without dead ends: 1419 [2020-10-15 23:18:04,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1141 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=918, Invalid=3638, Unknown=0, NotChecked=0, Total=4556 [2020-10-15 23:18:04,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2020-10-15 23:18:04,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 863. [2020-10-15 23:18:04,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2020-10-15 23:18:04,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 2222 transitions. [2020-10-15 23:18:04,818 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 2222 transitions. Word has length 25 [2020-10-15 23:18:04,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:18:04,818 INFO L481 AbstractCegarLoop]: Abstraction has 863 states and 2222 transitions. [2020-10-15 23:18:04,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 23:18:04,819 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 2222 transitions. [2020-10-15 23:18:04,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:18:04,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:18:04,821 INFO L422 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] [2020-10-15 23:18:04,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 23:18:04,822 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 23:18:04,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:18:04,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1646732586, now seen corresponding path program 3 times [2020-10-15 23:18:04,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:18:04,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587999785] [2020-10-15 23:18:04,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:18:04,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:18:05,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:18:05,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587999785] [2020-10-15 23:18:05,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:18:05,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-15 23:18:05,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483921545] [2020-10-15 23:18:05,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 23:18:05,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:18:05,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 23:18:05,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-15 23:18:05,231 INFO L87 Difference]: Start difference. First operand 863 states and 2222 transitions. Second operand 17 states. [2020-10-15 23:18:05,985 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-10-15 23:18:06,138 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-10-15 23:18:06,321 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-15 23:18:06,518 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-10-15 23:18:06,757 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2020-10-15 23:18:07,126 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-10-15 23:18:07,417 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-15 23:18:07,623 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-10-15 23:18:07,812 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-10-15 23:18:08,036 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-15 23:18:08,328 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-10-15 23:18:08,535 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-15 23:18:08,771 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2020-10-15 23:18:08,973 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-15 23:18:09,214 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-15 23:18:09,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:18:09,273 INFO L93 Difference]: Finished difference Result 1720 states and 4208 transitions. [2020-10-15 23:18:09,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-15 23:18:09,274 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-15 23:18:09,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:18:09,282 INFO L225 Difference]: With dead ends: 1720 [2020-10-15 23:18:09,282 INFO L226 Difference]: Without dead ends: 1702 [2020-10-15 23:18:09,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=543, Invalid=1437, Unknown=0, NotChecked=0, Total=1980 [2020-10-15 23:18:09,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-15 23:18:09,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 940. [2020-10-15 23:18:09,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 940 states. [2020-10-15 23:18:09,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 2409 transitions. [2020-10-15 23:18:09,310 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 2409 transitions. Word has length 25 [2020-10-15 23:18:09,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:18:09,310 INFO L481 AbstractCegarLoop]: Abstraction has 940 states and 2409 transitions. [2020-10-15 23:18:09,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 23:18:09,310 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 2409 transitions. [2020-10-15 23:18:09,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:18:09,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:18:09,313 INFO L422 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] [2020-10-15 23:18:09,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 23:18:09,313 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 23:18:09,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:18:09,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1982583190, now seen corresponding path program 3 times [2020-10-15 23:18:09,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:18:09,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845171925] [2020-10-15 23:18:09,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:18:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:18:09,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:18:09,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845171925] [2020-10-15 23:18:09,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:18:09,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-15 23:18:09,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048917709] [2020-10-15 23:18:09,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 23:18:09,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:18:09,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 23:18:09,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-10-15 23:18:09,905 INFO L87 Difference]: Start difference. First operand 940 states and 2409 transitions. Second operand 15 states. [2020-10-15 23:18:10,156 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2020-10-15 23:18:10,336 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-15 23:18:10,638 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-15 23:18:10,858 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-15 23:18:11,201 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-10-15 23:18:11,496 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-10-15 23:18:11,965 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-10-15 23:18:12,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:18:12,875 INFO L93 Difference]: Finished difference Result 1246 states and 3165 transitions. [2020-10-15 23:18:12,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 23:18:12,876 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 25 [2020-10-15 23:18:12,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:18:12,882 INFO L225 Difference]: With dead ends: 1246 [2020-10-15 23:18:12,883 INFO L226 Difference]: Without dead ends: 1230 [2020-10-15 23:18:12,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 23:18:12,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2020-10-15 23:18:12,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1050. [2020-10-15 23:18:12,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1050 states. [2020-10-15 23:18:12,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 2751 transitions. [2020-10-15 23:18:12,908 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 2751 transitions. Word has length 25 [2020-10-15 23:18:12,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:18:12,908 INFO L481 AbstractCegarLoop]: Abstraction has 1050 states and 2751 transitions. [2020-10-15 23:18:12,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 23:18:12,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 2751 transitions. [2020-10-15 23:18:12,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:18:12,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:18:12,912 INFO L422 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] [2020-10-15 23:18:12,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 23:18:12,912 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 23:18:12,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:18:12,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1689584038, now seen corresponding path program 2 times [2020-10-15 23:18:12,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:18:12,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491848251] [2020-10-15 23:18:12,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:18:12,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 23:18:12,928 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 23:18:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 23:18:12,942 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 23:18:12,970 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 23:18:12,971 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 23:18:12,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 23:18:13,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 11:18:13 BasicIcfg [2020-10-15 23:18:13,022 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 23:18:13,024 INFO L168 Benchmark]: Toolchain (without parser) took 37435.49 ms. Allocated memory was 253.8 MB in the beginning and 552.1 MB in the end (delta: 298.3 MB). Free memory was 208.8 MB in the beginning and 470.9 MB in the end (delta: -262.0 MB). Peak memory consumption was 36.3 MB. Max. memory is 14.2 GB. [2020-10-15 23:18:13,024 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 253.8 MB. Free memory was 231.8 MB in the beginning and 231.0 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-15 23:18:13,025 INFO L168 Benchmark]: CACSL2BoogieTranslator took 417.89 ms. Allocated memory was 253.8 MB in the beginning and 329.8 MB in the end (delta: 76.0 MB). Free memory was 208.0 MB in the beginning and 305.6 MB in the end (delta: -97.6 MB). Peak memory consumption was 25.1 MB. Max. memory is 14.2 GB. [2020-10-15 23:18:13,026 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.21 ms. Allocated memory is still 329.8 MB. Free memory was 305.6 MB in the beginning and 302.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.2 GB. [2020-10-15 23:18:13,027 INFO L168 Benchmark]: Boogie Preprocessor took 45.79 ms. Allocated memory is still 329.8 MB. Free memory was 302.7 MB in the beginning and 301.9 MB in the end (delta: 854.5 kB). Peak memory consumption was 854.5 kB. Max. memory is 14.2 GB. [2020-10-15 23:18:13,027 INFO L168 Benchmark]: RCFGBuilder took 384.73 ms. Allocated memory is still 329.8 MB. Free memory was 301.9 MB in the beginning and 283.5 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 14.2 GB. [2020-10-15 23:18:13,028 INFO L168 Benchmark]: TraceAbstraction took 36534.10 ms. Allocated memory was 329.8 MB in the beginning and 552.1 MB in the end (delta: 222.3 MB). Free memory was 282.7 MB in the beginning and 470.9 MB in the end (delta: -188.2 MB). Peak memory consumption was 34.1 MB. Max. memory is 14.2 GB. [2020-10-15 23:18:13,032 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 253.8 MB. Free memory was 231.8 MB in the beginning and 231.0 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 417.89 ms. Allocated memory was 253.8 MB in the beginning and 329.8 MB in the end (delta: 76.0 MB). Free memory was 208.0 MB in the beginning and 305.6 MB in the end (delta: -97.6 MB). Peak memory consumption was 25.1 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 48.21 ms. Allocated memory is still 329.8 MB. Free memory was 305.6 MB in the beginning and 302.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 45.79 ms. Allocated memory is still 329.8 MB. Free memory was 302.7 MB in the beginning and 301.9 MB in the end (delta: 854.5 kB). Peak memory consumption was 854.5 kB. Max. memory is 14.2 GB. * RCFGBuilder took 384.73 ms. Allocated memory is still 329.8 MB. Free memory was 301.9 MB in the beginning and 283.5 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 36534.10 ms. Allocated memory was 329.8 MB in the beginning and 552.1 MB in the end (delta: 222.3 MB). Free memory was 282.7 MB in the beginning and 470.9 MB in the end (delta: -188.2 MB). Peak memory consumption was 34.1 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 719 VarBasedMoverChecksPositive, 45 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 41 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 188 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 81 PlacesBefore, 39 PlacesAfterwards, 77 TransitionsBefore, 35 TransitionsAfterwards, 1008 CoEnabledTransitionPairs, 5 FixpointIterations, 25 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 43 TotalNumberOfCompositions, 4010 MoverChecksTotal - 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={8:0}] [L30] FCALL, FORK 0 pthread_create(&second_thread_id, NULL, foo, &val) VAL [counter=0, n={8:0}] [L16] 2 int *x = (int *)n; [L17] 2 ++counter VAL [++counter=1, counter=0, n={8:0}, n={8:0}, x={8:0}] [L31] FCALL, FORK 0 pthread_create(&third_thread_id, NULL, foo, &val) VAL [++counter=1, counter=0, n={8:0}, n={8:0}, x={8:0}] [L16] 3 int *x = (int *)n; [L17] EXPR 3 ++counter VAL [++counter=1, counter=1, n={8:0}, n={8:0}, x={8:0}] [L17] 3 *x = ++counter [L18] 3 return 0; [L17] 2 ++counter VAL [++counter=1, \result={0:0}, counter=2, n={8:0}, n={8:0}, x={8:0}] [L16] 1 int *x = (int *)n; [L17] EXPR 1 ++counter VAL [++counter=3, \result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L33] 0 \read(first_thread_id) VAL [++counter=3, \result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [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={8:0}, n={8:0}, x={8:0}] [L34] 0 \read(second_thread_id) VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L34] FCALL, JOIN 2 pthread_join(second_thread_id, NULL) VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L35] 0 \read(third_thread_id) VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L35] FCALL, JOIN 3 pthread_join(third_thread_id, NULL) VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L37] FCALL 0 IdentifierExpression[val] [L37] 0 CodeAnnotStmt[Assertion] VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 36.3s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 29.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 458 SDtfs, 2639 SDslu, 2851 SDs, 0 SdLazy, 8096 SolverSat, 534 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 384 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3983 ImplicationChecksByTransitivity, 24.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1050occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 4035 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 275 NumberOfCodeBlocks, 275 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 240 ConstructedInterpolants, 0 QuantifiedInterpolants, 119808 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...