/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-11 18:07:43,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-11 18:07:43,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-11 18:07:43,317 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-11 18:07:43,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-11 18:07:43,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-11 18:07:43,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-11 18:07:43,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-11 18:07:43,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-11 18:07:43,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-11 18:07:43,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-11 18:07:43,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-11 18:07:43,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-11 18:07:43,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-11 18:07:43,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-11 18:07:43,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-11 18:07:43,335 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-11 18:07:43,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-11 18:07:43,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-11 18:07:43,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-11 18:07:43,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-11 18:07:43,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-11 18:07:43,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-11 18:07:43,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-11 18:07:43,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-11 18:07:43,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-11 18:07:43,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-11 18:07:43,369 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-11 18:07:43,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-11 18:07:43,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-11 18:07:43,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-11 18:07:43,373 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-11 18:07:43,373 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-11 18:07:43,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-11 18:07:43,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-11 18:07:43,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-11 18:07:43,378 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-NoLbe.epf [2020-11-11 18:07:43,435 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-11 18:07:43,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-11 18:07:43,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-11 18:07:43,437 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-11 18:07:43,437 INFO L138 SettingsManager]: * Use SBE=true [2020-11-11 18:07:43,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-11 18:07:43,438 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-11 18:07:43,439 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-11 18:07:43,439 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-11 18:07:43,439 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-11 18:07:43,439 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-11 18:07:43,440 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-11 18:07:43,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-11 18:07:43,441 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-11 18:07:43,441 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-11 18:07:43,441 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-11 18:07:43,441 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-11 18:07:43,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-11 18:07:43,442 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-11 18:07:43,442 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-11 18:07:43,442 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-11 18:07:43,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 18:07:43,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-11 18:07:43,443 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-11 18:07:43,443 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-11 18:07:43,443 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-11 18:07:43,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-11 18:07:43,444 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-11 18:07:43,444 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-11 18:07:43,444 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-11 18:07:43,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-11 18:07:43,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-11 18:07:43,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-11 18:07:43,904 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-11 18:07:43,905 INFO L275 PluginConnector]: CDTParser initialized [2020-11-11 18:07:43,906 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i [2020-11-11 18:07:43,984 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/099e233cc/78886af780634f3194759c5a92489cc5/FLAGd8e851148 [2020-11-11 18:07:44,701 INFO L306 CDTParser]: Found 1 translation units. [2020-11-11 18:07:44,702 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i [2020-11-11 18:07:44,718 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/099e233cc/78886af780634f3194759c5a92489cc5/FLAGd8e851148 [2020-11-11 18:07:44,967 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/099e233cc/78886af780634f3194759c5a92489cc5 [2020-11-11 18:07:44,970 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-11 18:07:44,976 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-11 18:07:44,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-11 18:07:44,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-11 18:07:44,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-11 18:07:44,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:07:44" (1/1) ... [2020-11-11 18:07:44,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@578354f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:07:44, skipping insertion in model container [2020-11-11 18:07:44,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:07:44" (1/1) ... [2020-11-11 18:07:45,001 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-11 18:07:45,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-11 18:07:45,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 18:07:45,428 INFO L203 MainTranslator]: Completed pre-run [2020-11-11 18:07:45,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 18:07:45,628 INFO L208 MainTranslator]: Completed translation [2020-11-11 18:07:45,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:07:45 WrapperNode [2020-11-11 18:07:45,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-11 18:07:45,631 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-11 18:07:45,632 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-11 18:07:45,632 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-11 18:07:45,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:07:45" (1/1) ... [2020-11-11 18:07:45,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:07:45" (1/1) ... [2020-11-11 18:07:45,722 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-11 18:07:45,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-11 18:07:45,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-11 18:07:45,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-11 18:07:45,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:07:45" (1/1) ... [2020-11-11 18:07:45,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:07:45" (1/1) ... [2020-11-11 18:07:45,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:07:45" (1/1) ... [2020-11-11 18:07:45,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:07:45" (1/1) ... [2020-11-11 18:07:45,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:07:45" (1/1) ... [2020-11-11 18:07:45,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:07:45" (1/1) ... [2020-11-11 18:07:45,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:07:45" (1/1) ... [2020-11-11 18:07:45,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-11 18:07:45,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-11 18:07:45,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-11 18:07:45,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-11 18:07:45,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:07:45" (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 [2020-11-11 18:07:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-11 18:07:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-11 18:07:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-11 18:07:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-11 18:07:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-11 18:07:45,834 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-11 18:07:45,834 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-11 18:07:45,834 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-11 18:07:45,834 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-11 18:07:45,834 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-11 18:07:45,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-11 18:07:45,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-11 18:07:45,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-11 18:07:45,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-11 18:07:45,837 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-11 18:07:46,232 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-11 18:07:46,233 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-11 18:07:46,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:07:46 BoogieIcfgContainer [2020-11-11 18:07:46,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-11 18:07:46,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-11 18:07:46,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-11 18:07:46,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-11 18:07:46,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 06:07:44" (1/3) ... [2020-11-11 18:07:46,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ceed171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:07:46, skipping insertion in model container [2020-11-11 18:07:46,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:07:45" (2/3) ... [2020-11-11 18:07:46,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ceed171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:07:46, skipping insertion in model container [2020-11-11 18:07:46,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:07:46" (3/3) ... [2020-11-11 18:07:46,247 INFO L111 eAbstractionObserver]: Analyzing ICFG safe013_tso.opt.i [2020-11-11 18:07:46,264 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-11 18:07:46,265 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-11 18:07:46,269 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-11 18:07:46,270 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-11 18:07:46,315 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,315 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,316 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,316 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,316 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,316 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,316 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,317 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,317 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,317 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,317 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,318 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,318 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,318 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,319 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,319 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,319 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,319 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,319 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,319 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,320 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,320 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,320 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,320 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,322 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,324 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,324 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,324 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,325 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,325 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,325 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,326 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,326 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,326 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,326 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,327 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,335 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,336 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,336 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,337 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,351 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,352 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,352 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,352 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,356 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,356 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,356 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,357 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:46,360 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-11 18:07:46,377 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-11 18:07:46,414 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-11 18:07:46,414 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-11 18:07:46,414 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-11 18:07:46,414 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-11 18:07:46,415 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-11 18:07:46,415 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-11 18:07:46,415 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-11 18:07:46,415 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-11 18:07:46,432 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 79 transitions, 173 flow [2020-11-11 18:07:47,243 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:47,284 INFO L276 IsEmpty]: Start isEmpty. Operand has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:47,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-11 18:07:47,335 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:07:47,336 INFO L494 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:07:47,336 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:07:47,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:07:47,342 INFO L82 PathProgramCache]: Analyzing trace with hash 407701414, now seen corresponding path program 1 times [2020-11-11 18:07:47,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:07:47,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51697185] [2020-11-11 18:07:47,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:07:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:07:47,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:07:47,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51697185] [2020-11-11 18:07:47,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:07:47,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:07:47,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615114568] [2020-11-11 18:07:47,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:07:47,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:07:47,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:07:47,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:07:47,927 INFO L87 Difference]: Start difference. First operand has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:48,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:07:48,288 INFO L93 Difference]: Finished difference Result 12200 states and 42464 transitions. [2020-11-11 18:07:48,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:07:48,290 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2020-11-11 18:07:48,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:07:48,349 INFO L225 Difference]: With dead ends: 12200 [2020-11-11 18:07:48,349 INFO L226 Difference]: Without dead ends: 4605 [2020-11-11 18:07:48,351 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:07:48,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4605 states. [2020-11-11 18:07:48,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4605 to 4605. [2020-11-11 18:07:48,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4605 states, 4604 states have (on average 3.415291051259774) internal successors, (15724), 4604 states have internal predecessors, (15724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:48,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4605 states to 4605 states and 15724 transitions. [2020-11-11 18:07:48,793 INFO L78 Accepts]: Start accepts. Automaton has 4605 states and 15724 transitions. Word has length 42 [2020-11-11 18:07:48,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:07:48,794 INFO L481 AbstractCegarLoop]: Abstraction has 4605 states and 15724 transitions. [2020-11-11 18:07:48,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:48,796 INFO L276 IsEmpty]: Start isEmpty. Operand 4605 states and 15724 transitions. [2020-11-11 18:07:48,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-11 18:07:48,812 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:07:48,814 INFO L494 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:07:48,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-11 18:07:48,817 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:07:48,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:07:48,820 INFO L82 PathProgramCache]: Analyzing trace with hash 410392453, now seen corresponding path program 1 times [2020-11-11 18:07:48,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:07:48,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249721172] [2020-11-11 18:07:48,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:07:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:07:49,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:07:49,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249721172] [2020-11-11 18:07:49,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:07:49,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:07:49,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130327048] [2020-11-11 18:07:49,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:07:49,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:07:49,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:07:49,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:07:49,141 INFO L87 Difference]: Start difference. First operand 4605 states and 15724 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:49,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:07:49,331 INFO L93 Difference]: Finished difference Result 5473 states and 18505 transitions. [2020-11-11 18:07:49,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:07:49,332 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2020-11-11 18:07:49,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:07:49,411 INFO L225 Difference]: With dead ends: 5473 [2020-11-11 18:07:49,411 INFO L226 Difference]: Without dead ends: 4493 [2020-11-11 18:07:49,412 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:07:49,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4493 states. [2020-11-11 18:07:49,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4493 to 4493. [2020-11-11 18:07:49,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4493 states, 4492 states have (on average 3.404274265360641) internal successors, (15292), 4492 states have internal predecessors, (15292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:49,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4493 states to 4493 states and 15292 transitions. [2020-11-11 18:07:49,578 INFO L78 Accepts]: Start accepts. Automaton has 4493 states and 15292 transitions. Word has length 44 [2020-11-11 18:07:49,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:07:49,579 INFO L481 AbstractCegarLoop]: Abstraction has 4493 states and 15292 transitions. [2020-11-11 18:07:49,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:49,580 INFO L276 IsEmpty]: Start isEmpty. Operand 4493 states and 15292 transitions. [2020-11-11 18:07:49,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-11 18:07:49,591 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:07:49,591 INFO L494 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:07:49,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-11 18:07:49,592 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:07:49,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:07:49,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1509155095, now seen corresponding path program 1 times [2020-11-11 18:07:49,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:07:49,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889113617] [2020-11-11 18:07:49,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:07:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:07:49,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:07:49,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889113617] [2020-11-11 18:07:49,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:07:49,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:07:49,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261386300] [2020-11-11 18:07:49,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:07:49,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:07:49,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:07:49,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:07:49,730 INFO L87 Difference]: Start difference. First operand 4493 states and 15292 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:50,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:07:50,011 INFO L93 Difference]: Finished difference Result 5605 states and 18839 transitions. [2020-11-11 18:07:50,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-11 18:07:50,012 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2020-11-11 18:07:50,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:07:50,038 INFO L225 Difference]: With dead ends: 5605 [2020-11-11 18:07:50,038 INFO L226 Difference]: Without dead ends: 2966 [2020-11-11 18:07:50,039 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-11 18:07:50,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-11-11 18:07:50,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 2966. [2020-11-11 18:07:50,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2966 states, 2965 states have (on average 3.2654300168634065) internal successors, (9682), 2965 states have internal predecessors, (9682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:50,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2966 states to 2966 states and 9682 transitions. [2020-11-11 18:07:50,167 INFO L78 Accepts]: Start accepts. Automaton has 2966 states and 9682 transitions. Word has length 45 [2020-11-11 18:07:50,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:07:50,167 INFO L481 AbstractCegarLoop]: Abstraction has 2966 states and 9682 transitions. [2020-11-11 18:07:50,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:50,168 INFO L276 IsEmpty]: Start isEmpty. Operand 2966 states and 9682 transitions. [2020-11-11 18:07:50,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-11 18:07:50,177 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:07:50,177 INFO L494 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:07:50,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-11 18:07:50,178 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:07:50,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:07:50,178 INFO L82 PathProgramCache]: Analyzing trace with hash 977887402, now seen corresponding path program 1 times [2020-11-11 18:07:50,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:07:50,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846253063] [2020-11-11 18:07:50,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:07:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:07:50,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:07:50,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846253063] [2020-11-11 18:07:50,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:07:50,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:07:50,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390647075] [2020-11-11 18:07:50,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:07:50,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:07:50,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:07:50,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:07:50,341 INFO L87 Difference]: Start difference. First operand 2966 states and 9682 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:50,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:07:50,530 INFO L93 Difference]: Finished difference Result 4678 states and 15066 transitions. [2020-11-11 18:07:50,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:07:50,531 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2020-11-11 18:07:50,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:07:50,609 INFO L225 Difference]: With dead ends: 4678 [2020-11-11 18:07:50,609 INFO L226 Difference]: Without dead ends: 3350 [2020-11-11 18:07:50,610 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:07:50,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3350 states. [2020-11-11 18:07:50,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3350 to 2710. [2020-11-11 18:07:50,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2710 states, 2709 states have (on average 3.1915836101882613) internal successors, (8646), 2709 states have internal predecessors, (8646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:50,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2710 states to 2710 states and 8646 transitions. [2020-11-11 18:07:50,706 INFO L78 Accepts]: Start accepts. Automaton has 2710 states and 8646 transitions. Word has length 48 [2020-11-11 18:07:50,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:07:50,707 INFO L481 AbstractCegarLoop]: Abstraction has 2710 states and 8646 transitions. [2020-11-11 18:07:50,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:50,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2710 states and 8646 transitions. [2020-11-11 18:07:50,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-11 18:07:50,715 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:07:50,715 INFO L494 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:07:50,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-11 18:07:50,715 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:07:50,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:07:50,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1662232019, now seen corresponding path program 1 times [2020-11-11 18:07:50,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:07:50,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42492840] [2020-11-11 18:07:50,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:07:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:07:50,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:07:50,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42492840] [2020-11-11 18:07:50,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:07:50,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:07:50,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076225661] [2020-11-11 18:07:50,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:07:50,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:07:50,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:07:50,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:07:50,830 INFO L87 Difference]: Start difference. First operand 2710 states and 8646 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:50,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:07:50,980 INFO L93 Difference]: Finished difference Result 3430 states and 10790 transitions. [2020-11-11 18:07:50,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:07:50,981 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2020-11-11 18:07:50,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:07:50,991 INFO L225 Difference]: With dead ends: 3430 [2020-11-11 18:07:50,991 INFO L226 Difference]: Without dead ends: 2478 [2020-11-11 18:07:50,992 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:07:51,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2478 states. [2020-11-11 18:07:51,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2478 to 2478. [2020-11-11 18:07:51,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2478 states, 2477 states have (on average 3.1441259588211548) internal successors, (7788), 2477 states have internal predecessors, (7788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:51,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 7788 transitions. [2020-11-11 18:07:51,070 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 7788 transitions. Word has length 49 [2020-11-11 18:07:51,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:07:51,071 INFO L481 AbstractCegarLoop]: Abstraction has 2478 states and 7788 transitions. [2020-11-11 18:07:51,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:51,071 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 7788 transitions. [2020-11-11 18:07:51,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-11 18:07:51,079 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:07:51,079 INFO L494 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, 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] [2020-11-11 18:07:51,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-11 18:07:51,079 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:07:51,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:07:51,080 INFO L82 PathProgramCache]: Analyzing trace with hash -803137758, now seen corresponding path program 1 times [2020-11-11 18:07:51,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:07:51,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222351236] [2020-11-11 18:07:51,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:07:51,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:07:51,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:07:51,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222351236] [2020-11-11 18:07:51,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:07:51,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:07:51,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583291909] [2020-11-11 18:07:51,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:07:51,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:07:51,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:07:51,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:07:51,300 INFO L87 Difference]: Start difference. First operand 2478 states and 7788 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:51,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:07:51,456 INFO L93 Difference]: Finished difference Result 2628 states and 8032 transitions. [2020-11-11 18:07:51,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-11 18:07:51,457 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2020-11-11 18:07:51,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:07:51,463 INFO L225 Difference]: With dead ends: 2628 [2020-11-11 18:07:51,463 INFO L226 Difference]: Without dead ends: 1836 [2020-11-11 18:07:51,464 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-11-11 18:07:51,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1836 states. [2020-11-11 18:07:51,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1836 to 1836. [2020-11-11 18:07:51,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1836 states, 1835 states have (on average 3.0103542234332425) internal successors, (5524), 1835 states have internal predecessors, (5524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:51,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 5524 transitions. [2020-11-11 18:07:51,520 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 5524 transitions. Word has length 50 [2020-11-11 18:07:51,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:07:51,520 INFO L481 AbstractCegarLoop]: Abstraction has 1836 states and 5524 transitions. [2020-11-11 18:07:51,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:51,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 5524 transitions. [2020-11-11 18:07:51,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-11 18:07:51,526 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:07:51,526 INFO L494 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, 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, 1, 1] [2020-11-11 18:07:51,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-11 18:07:51,526 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:07:51,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:07:51,527 INFO L82 PathProgramCache]: Analyzing trace with hash -127783167, now seen corresponding path program 1 times [2020-11-11 18:07:51,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:07:51,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403877371] [2020-11-11 18:07:51,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:07:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:07:51,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:07:51,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403877371] [2020-11-11 18:07:51,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:07:51,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-11 18:07:51,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598690956] [2020-11-11 18:07:51,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-11 18:07:51,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:07:51,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-11 18:07:51,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-11 18:07:51,635 INFO L87 Difference]: Start difference. First operand 1836 states and 5524 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:51,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:07:51,804 INFO L93 Difference]: Finished difference Result 1503 states and 4360 transitions. [2020-11-11 18:07:51,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-11 18:07:51,805 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2020-11-11 18:07:51,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:07:51,807 INFO L225 Difference]: With dead ends: 1503 [2020-11-11 18:07:51,808 INFO L226 Difference]: Without dead ends: 731 [2020-11-11 18:07:51,808 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-11-11 18:07:51,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2020-11-11 18:07:51,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 731. [2020-11-11 18:07:51,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 730 states have (on average 2.8068493150684932) internal successors, (2049), 730 states have internal predecessors, (2049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:51,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 2049 transitions. [2020-11-11 18:07:51,828 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 2049 transitions. Word has length 52 [2020-11-11 18:07:51,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:07:51,829 INFO L481 AbstractCegarLoop]: Abstraction has 731 states and 2049 transitions. [2020-11-11 18:07:51,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:51,829 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 2049 transitions. [2020-11-11 18:07:51,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-11 18:07:51,831 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:07:51,831 INFO L494 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, 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, 1, 1, 1, 1] [2020-11-11 18:07:51,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-11 18:07:51,831 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:07:51,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:07:51,832 INFO L82 PathProgramCache]: Analyzing trace with hash -293180094, now seen corresponding path program 1 times [2020-11-11 18:07:51,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:07:51,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249584494] [2020-11-11 18:07:51,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:07:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:07:51,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:07:51,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249584494] [2020-11-11 18:07:51,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:07:51,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:07:51,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584416214] [2020-11-11 18:07:51,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:07:51,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:07:51,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:07:51,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:07:51,931 INFO L87 Difference]: Start difference. First operand 731 states and 2049 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:52,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:07:52,032 INFO L93 Difference]: Finished difference Result 623 states and 1725 transitions. [2020-11-11 18:07:52,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-11 18:07:52,032 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2020-11-11 18:07:52,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:07:52,032 INFO L225 Difference]: With dead ends: 623 [2020-11-11 18:07:52,033 INFO L226 Difference]: Without dead ends: 0 [2020-11-11 18:07:52,033 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:07:52,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-11 18:07:52,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-11 18:07:52,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:52,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-11 18:07:52,034 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2020-11-11 18:07:52,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:07:52,034 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-11 18:07:52,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:52,034 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-11 18:07:52,035 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-11 18:07:52,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-11 18:07:52,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 06:07:52 BasicIcfg [2020-11-11 18:07:52,040 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-11 18:07:52,042 INFO L168 Benchmark]: Toolchain (without parser) took 7070.00 ms. Allocated memory was 302.0 MB in the beginning and 706.7 MB in the end (delta: 404.8 MB). Free memory was 277.1 MB in the beginning and 612.5 MB in the end (delta: -335.4 MB). Peak memory consumption was 231.6 MB. Max. memory is 16.0 GB. [2020-11-11 18:07:52,043 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 302.0 MB. Free memory was 272.5 MB in the beginning and 272.4 MB in the end (delta: 65.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 18:07:52,044 INFO L168 Benchmark]: CACSL2BoogieTranslator took 651.43 ms. Allocated memory is still 302.0 MB. Free memory was 276.4 MB in the beginning and 245.6 MB in the end (delta: 30.7 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. [2020-11-11 18:07:52,045 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.15 ms. Allocated memory is still 302.0 MB. Free memory was 245.6 MB in the beginning and 283.8 MB in the end (delta: -38.2 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.0 GB. [2020-11-11 18:07:52,045 INFO L168 Benchmark]: Boogie Preprocessor took 36.09 ms. Allocated memory is still 302.0 MB. Free memory was 282.7 MB in the beginning and 281.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-11 18:07:52,046 INFO L168 Benchmark]: RCFGBuilder took 475.26 ms. Allocated memory is still 302.0 MB. Free memory was 281.7 MB in the beginning and 257.6 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2020-11-11 18:07:52,047 INFO L168 Benchmark]: TraceAbstraction took 5800.57 ms. Allocated memory was 302.0 MB in the beginning and 706.7 MB in the end (delta: 404.8 MB). Free memory was 257.6 MB in the beginning and 612.5 MB in the end (delta: -354.9 MB). Peak memory consumption was 212.4 MB. Max. memory is 16.0 GB. [2020-11-11 18:07:52,051 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 302.0 MB. Free memory was 272.5 MB in the beginning and 272.4 MB in the end (delta: 65.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 651.43 ms. Allocated memory is still 302.0 MB. Free memory was 276.4 MB in the beginning and 245.6 MB in the end (delta: 30.7 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 91.15 ms. Allocated memory is still 302.0 MB. Free memory was 245.6 MB in the beginning and 283.8 MB in the end (delta: -38.2 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 36.09 ms. Allocated memory is still 302.0 MB. Free memory was 282.7 MB in the beginning and 281.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 475.26 ms. Allocated memory is still 302.0 MB. Free memory was 281.7 MB in the beginning and 257.6 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5800.57 ms. Allocated memory was 302.0 MB in the beginning and 706.7 MB in the end (delta: 404.8 MB). Free memory was 257.6 MB in the beginning and 612.5 MB in the end (delta: -354.9 MB). Peak memory consumption was 212.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 770 SDtfs, 1098 SDslu, 2437 SDs, 0 SdLazy, 275 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9848occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 640 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 384 NumberOfCodeBlocks, 384 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 376 ConstructedInterpolants, 0 QuantifiedInterpolants, 46638 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...