/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-New_States.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 12:28:39,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 12:28:39,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 12:28:39,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 12:28:39,249 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 12:28:39,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 12:28:39,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 12:28:39,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 12:28:39,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 12:28:39,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 12:28:39,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 12:28:39,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 12:28:39,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 12:28:39,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 12:28:39,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 12:28:39,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 12:28:39,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 12:28:39,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 12:28:39,272 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 12:28:39,274 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 12:28:39,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 12:28:39,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 12:28:39,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 12:28:39,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 12:28:39,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-12 12:28:39,294 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 12:28:39,295 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 12:28:39,296 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 12:28:39,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 12:28:39,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 12:28:39,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 12:28:39,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 12:28:39,300 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 12:28:39,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 12:28:39,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 12:28:39,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 12:28:39,303 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-New_States.epf [2020-11-12 12:28:39,332 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 12:28:39,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 12:28:39,334 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 12:28:39,334 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 12:28:39,335 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 12:28:39,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 12:28:39,335 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 12:28:39,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 12:28:39,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 12:28:39,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 12:28:39,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 12:28:39,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 12:28:39,337 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 12:28:39,337 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 12:28:39,337 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 12:28:39,338 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 12:28:39,338 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 12:28:39,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 12:28:39,338 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 12:28:39,339 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 12:28:39,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 12:28:39,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 12:28:39,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 12:28:39,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 12:28:39,340 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 12:28:39,340 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 12:28:39,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 12:28:39,341 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-12 12:28:39,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 12:28:39,341 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-12 12:28:39,341 INFO L138 SettingsManager]: * Sleep set reduction in concurrent analysis=NEW_STATES 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 12:28:39,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 12:28:39,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 12:28:39,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 12:28:39,752 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 12:28:39,753 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 12:28:39,755 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i [2020-11-12 12:28:39,850 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4ca3aa76/134fc65ac1b74308be743a5dabfc066c/FLAGe384b67dc [2020-11-12 12:28:40,607 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 12:28:40,608 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i [2020-11-12 12:28:40,627 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4ca3aa76/134fc65ac1b74308be743a5dabfc066c/FLAGe384b67dc [2020-11-12 12:28:40,843 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4ca3aa76/134fc65ac1b74308be743a5dabfc066c [2020-11-12 12:28:40,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 12:28:40,858 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 12:28:40,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 12:28:40,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 12:28:40,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 12:28:40,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:28:40" (1/1) ... [2020-11-12 12:28:40,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8f45127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:28:40, skipping insertion in model container [2020-11-12 12:28:40,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:28:40" (1/1) ... [2020-11-12 12:28:40,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 12:28:40,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 12:28:41,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 12:28:41,328 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 12:28:41,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 12:28:41,519 INFO L208 MainTranslator]: Completed translation [2020-11-12 12:28:41,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:28:41 WrapperNode [2020-11-12 12:28:41,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 12:28:41,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 12:28:41,522 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 12:28:41,522 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 12:28:41,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:28:41" (1/1) ... [2020-11-12 12:28:41,548 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:28:41" (1/1) ... [2020-11-12 12:28:41,572 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 12:28:41,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 12:28:41,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 12:28:41,573 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 12:28:41,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:28:41" (1/1) ... [2020-11-12 12:28:41,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:28:41" (1/1) ... [2020-11-12 12:28:41,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:28:41" (1/1) ... [2020-11-12 12:28:41,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:28:41" (1/1) ... [2020-11-12 12:28:41,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:28:41" (1/1) ... [2020-11-12 12:28:41,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:28:41" (1/1) ... [2020-11-12 12:28:41,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:28:41" (1/1) ... [2020-11-12 12:28:41,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 12:28:41,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 12:28:41,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 12:28:41,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 12:28:41,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:28:41" (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 [2020-11-12 12:28:41,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 12:28:41,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 12:28:41,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 12:28:41,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 12:28:41,711 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-12 12:28:41,712 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-12 12:28:41,713 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-12 12:28:41,713 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-12 12:28:41,714 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-12 12:28:41,714 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-12 12:28:41,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 12:28:41,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 12:28:41,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 12:28:41,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 12:28:41,717 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-12 12:28:42,252 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 12:28:42,253 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-12 12:28:42,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:28:42 BoogieIcfgContainer [2020-11-12 12:28:42,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 12:28:42,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 12:28:42,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 12:28:42,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 12:28:42,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:28:40" (1/3) ... [2020-11-12 12:28:42,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5681f5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:28:42, skipping insertion in model container [2020-11-12 12:28:42,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:28:41" (2/3) ... [2020-11-12 12:28:42,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5681f5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:28:42, skipping insertion in model container [2020-11-12 12:28:42,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:28:42" (3/3) ... [2020-11-12 12:28:42,264 INFO L111 eAbstractionObserver]: Analyzing ICFG safe034_tso.oepc.i [2020-11-12 12:28:42,281 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 12:28:42,281 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 12:28:42,285 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 12:28:42,286 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 12:28:42,322 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,322 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,322 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,322 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,323 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,323 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,323 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,323 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,324 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,324 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,324 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,324 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,325 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,325 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,325 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,325 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,326 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,326 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,326 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,326 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,326 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,326 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,327 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,327 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,328 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,329 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,329 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,329 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,329 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,330 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,330 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,330 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,331 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,331 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,331 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,331 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,340 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,340 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,340 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,341 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,351 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,351 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,351 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,352 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,354 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,355 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,355 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,355 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:42,358 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 12:28:42,370 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-12 12:28:42,392 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 12:28:42,393 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 12:28:42,393 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 12:28:42,393 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 12:28:42,393 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 12:28:42,393 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 12:28:42,393 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 12:28:42,394 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 12:28:42,406 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 79 transitions, 173 flow [2020-11-12 12:28:43,540 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) [2020-11-12 12:28:44,668 WARN L455 BasicCegarLoop]: Sleep Set Reduction Time: 1124ms [2020-11-12 12:28:44,717 WARN L456 BasicCegarLoop]: Sleep set: input automaton 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) [2020-11-12 12:28:44,867 WARN L457 BasicCegarLoop]: Sleep set: output automaton has 34217 states, 31172 states have (on average 1.1893686641858077) internal successors, (37075), 34216 states have internal predecessors, (37075), 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) [2020-11-12 12:28:45,018 INFO L276 IsEmpty]: Start isEmpty. Operand has 34217 states, 31172 states have (on average 1.1893686641858077) internal successors, (37075), 34216 states have internal predecessors, (37075), 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) [2020-11-12 12:28:45,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-12 12:28:45,050 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:28:45,051 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] [2020-11-12 12:28:45,052 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:28:45,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:28:45,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1916858186, now seen corresponding path program 1 times [2020-11-12 12:28:45,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:28:45,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774204804] [2020-11-12 12:28:45,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:28:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:28:45,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:28:45,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774204804] [2020-11-12 12:28:45,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:28:45,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:28:45,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077650857] [2020-11-12 12:28:45,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:28:45,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:28:45,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:28:45,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:28:45,619 INFO L87 Difference]: Start difference. First operand has 34217 states, 31172 states have (on average 1.1893686641858077) internal successors, (37075), 34216 states have internal predecessors, (37075), 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) [2020-11-12 12:28:46,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:28:46,046 INFO L93 Difference]: Finished difference Result 14763 states and 16560 transitions. [2020-11-12 12:28:46,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:28:46,048 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 [2020-11-12 12:28:46,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:28:46,092 INFO L225 Difference]: With dead ends: 14763 [2020-11-12 12:28:46,092 INFO L226 Difference]: Without dead ends: 5080 [2020-11-12 12:28:46,094 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:28:46,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5080 states. [2020-11-12 12:28:46,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5080 to 5080. [2020-11-12 12:28:46,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5080 states, 4779 states have (on average 1.2979702866708516) internal successors, (6203), 5079 states have internal predecessors, (6203), 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) [2020-11-12 12:28:46,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5080 states to 5080 states and 6203 transitions. [2020-11-12 12:28:46,378 INFO L78 Accepts]: Start accepts. Automaton has 5080 states and 6203 transitions. Word has length 42 [2020-11-12 12:28:46,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:28:46,379 INFO L481 AbstractCegarLoop]: Abstraction has 5080 states and 6203 transitions. [2020-11-12 12:28:46,379 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) [2020-11-12 12:28:46,379 INFO L276 IsEmpty]: Start isEmpty. Operand 5080 states and 6203 transitions. [2020-11-12 12:28:46,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-12 12:28:46,387 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:28:46,387 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] [2020-11-12 12:28:46,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 12:28:46,388 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:28:46,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:28:46,389 INFO L82 PathProgramCache]: Analyzing trace with hash -793151369, now seen corresponding path program 1 times [2020-11-12 12:28:46,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:28:46,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509286741] [2020-11-12 12:28:46,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:28:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:28:46,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:28:46,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509286741] [2020-11-12 12:28:46,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:28:46,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:28:46,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054630711] [2020-11-12 12:28:46,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:28:46,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:28:46,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:28:46,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:28:46,611 INFO L87 Difference]: Start difference. First operand 5080 states and 6203 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) [2020-11-12 12:28:46,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:28:46,890 INFO L93 Difference]: Finished difference Result 5686 states and 6648 transitions. [2020-11-12 12:28:46,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:28:46,891 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 [2020-11-12 12:28:46,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:28:46,913 INFO L225 Difference]: With dead ends: 5686 [2020-11-12 12:28:46,914 INFO L226 Difference]: Without dead ends: 4374 [2020-11-12 12:28:46,915 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 [2020-11-12 12:28:46,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4374 states. [2020-11-12 12:28:47,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4374 to 4374. [2020-11-12 12:28:47,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4374 states, 4113 states have (on average 1.262582056892779) internal successors, (5193), 4373 states have internal predecessors, (5193), 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) [2020-11-12 12:28:47,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4374 states to 4374 states and 5193 transitions. [2020-11-12 12:28:47,099 INFO L78 Accepts]: Start accepts. Automaton has 4374 states and 5193 transitions. Word has length 44 [2020-11-12 12:28:47,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:28:47,099 INFO L481 AbstractCegarLoop]: Abstraction has 4374 states and 5193 transitions. [2020-11-12 12:28:47,100 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) [2020-11-12 12:28:47,100 INFO L276 IsEmpty]: Start isEmpty. Operand 4374 states and 5193 transitions. [2020-11-12 12:28:47,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-12 12:28:47,106 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:28:47,106 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] [2020-11-12 12:28:47,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 12:28:47,107 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:28:47,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:28:47,107 INFO L82 PathProgramCache]: Analyzing trace with hash 208576116, now seen corresponding path program 1 times [2020-11-12 12:28:47,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:28:47,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123338385] [2020-11-12 12:28:47,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:28:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:28:47,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:28:47,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123338385] [2020-11-12 12:28:47,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:28:47,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:28:47,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263564126] [2020-11-12 12:28:47,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:28:47,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:28:47,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:28:47,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:28:47,254 INFO L87 Difference]: Start difference. First operand 4374 states and 5193 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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) [2020-11-12 12:28:47,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:28:47,470 INFO L93 Difference]: Finished difference Result 6653 states and 7624 transitions. [2020-11-12 12:28:47,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-12 12:28:47,471 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 46 [2020-11-12 12:28:47,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:28:47,490 INFO L225 Difference]: With dead ends: 6653 [2020-11-12 12:28:47,491 INFO L226 Difference]: Without dead ends: 4176 [2020-11-12 12:28:47,491 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:28:47,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4176 states. [2020-11-12 12:28:47,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4176 to 3506. [2020-11-12 12:28:47,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3506 states, 3293 states have (on average 1.2566049195262678) internal successors, (4138), 3505 states have internal predecessors, (4138), 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) [2020-11-12 12:28:47,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3506 states to 3506 states and 4138 transitions. [2020-11-12 12:28:47,590 INFO L78 Accepts]: Start accepts. Automaton has 3506 states and 4138 transitions. Word has length 46 [2020-11-12 12:28:47,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:28:47,590 INFO L481 AbstractCegarLoop]: Abstraction has 3506 states and 4138 transitions. [2020-11-12 12:28:47,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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) [2020-11-12 12:28:47,591 INFO L276 IsEmpty]: Start isEmpty. Operand 3506 states and 4138 transitions. [2020-11-12 12:28:47,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-12 12:28:47,596 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:28:47,596 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] [2020-11-12 12:28:47,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 12:28:47,596 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:28:47,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:28:47,597 INFO L82 PathProgramCache]: Analyzing trace with hash -887143368, now seen corresponding path program 1 times [2020-11-12 12:28:47,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:28:47,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758404116] [2020-11-12 12:28:47,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:28:47,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:28:47,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:28:47,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758404116] [2020-11-12 12:28:47,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:28:47,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:28:47,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599261595] [2020-11-12 12:28:47,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:28:47,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:28:47,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:28:47,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:28:47,857 INFO L87 Difference]: Start difference. First operand 3506 states and 4138 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2020-11-12 12:28:48,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:28:48,161 INFO L93 Difference]: Finished difference Result 2927 states and 3262 transitions. [2020-11-12 12:28:48,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 12:28:48,162 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 46 [2020-11-12 12:28:48,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:28:48,172 INFO L225 Difference]: With dead ends: 2927 [2020-11-12 12:28:48,173 INFO L226 Difference]: Without dead ends: 1902 [2020-11-12 12:28:48,173 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-11-12 12:28:48,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2020-11-12 12:28:48,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 1902. [2020-11-12 12:28:48,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1902 states, 1785 states have (on average 1.17703081232493) internal successors, (2101), 1901 states have internal predecessors, (2101), 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) [2020-11-12 12:28:48,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1902 states to 1902 states and 2101 transitions. [2020-11-12 12:28:48,229 INFO L78 Accepts]: Start accepts. Automaton has 1902 states and 2101 transitions. Word has length 46 [2020-11-12 12:28:48,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:28:48,229 INFO L481 AbstractCegarLoop]: Abstraction has 1902 states and 2101 transitions. [2020-11-12 12:28:48,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2020-11-12 12:28:48,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1902 states and 2101 transitions. [2020-11-12 12:28:48,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-12 12:28:48,234 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:28:48,234 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] [2020-11-12 12:28:48,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 12:28:48,234 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:28:48,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:28:48,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1280471794, now seen corresponding path program 1 times [2020-11-12 12:28:48,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:28:48,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148582553] [2020-11-12 12:28:48,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:28:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:28:48,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:28:48,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148582553] [2020-11-12 12:28:48,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:28:48,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-12 12:28:48,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4694892] [2020-11-12 12:28:48,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-12 12:28:48,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:28:48,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-12 12:28:48,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-12 12:28:48,480 INFO L87 Difference]: Start difference. First operand 1902 states and 2101 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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) [2020-11-12 12:28:48,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:28:48,847 INFO L93 Difference]: Finished difference Result 1119 states and 1201 transitions. [2020-11-12 12:28:48,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-12 12:28:48,848 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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 [2020-11-12 12:28:48,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:28:48,851 INFO L225 Difference]: With dead ends: 1119 [2020-11-12 12:28:48,852 INFO L226 Difference]: Without dead ends: 464 [2020-11-12 12:28:48,852 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-11-12 12:28:48,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-11-12 12:28:48,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2020-11-12 12:28:48,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 437 states have (on average 1.0869565217391304) internal successors, (475), 463 states have internal predecessors, (475), 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) [2020-11-12 12:28:48,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 475 transitions. [2020-11-12 12:28:48,866 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 475 transitions. Word has length 50 [2020-11-12 12:28:48,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:28:48,868 INFO L481 AbstractCegarLoop]: Abstraction has 464 states and 475 transitions. [2020-11-12 12:28:48,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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) [2020-11-12 12:28:48,869 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 475 transitions. [2020-11-12 12:28:48,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-12 12:28:48,871 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:28:48,872 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] [2020-11-12 12:28:48,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 12:28:48,872 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:28:48,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:28:48,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1856054240, now seen corresponding path program 1 times [2020-11-12 12:28:48,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:28:48,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244173921] [2020-11-12 12:28:48,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:28:48,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:28:49,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:28:49,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244173921] [2020-11-12 12:28:49,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:28:49,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:28:49,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117068344] [2020-11-12 12:28:49,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:28:49,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:28:49,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:28:49,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:28:49,077 INFO L87 Difference]: Start difference. First operand 464 states and 475 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) [2020-11-12 12:28:49,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:28:49,223 INFO L93 Difference]: Finished difference Result 735 states and 743 transitions. [2020-11-12 12:28:49,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 12:28:49,224 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 [2020-11-12 12:28:49,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:28:49,227 INFO L225 Difference]: With dead ends: 735 [2020-11-12 12:28:49,227 INFO L226 Difference]: Without dead ends: 429 [2020-11-12 12:28:49,228 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 [2020-11-12 12:28:49,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-11-12 12:28:49,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2020-11-12 12:28:49,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 402 states have (on average 1.064676616915423) internal successors, (428), 428 states have internal predecessors, (428), 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) [2020-11-12 12:28:49,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 428 transitions. [2020-11-12 12:28:49,244 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 428 transitions. Word has length 54 [2020-11-12 12:28:49,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:28:49,244 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 428 transitions. [2020-11-12 12:28:49,244 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) [2020-11-12 12:28:49,244 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 428 transitions. [2020-11-12 12:28:49,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-12 12:28:49,245 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:28:49,246 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] [2020-11-12 12:28:49,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 12:28:49,246 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:28:49,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:28:49,248 INFO L82 PathProgramCache]: Analyzing trace with hash 561413776, now seen corresponding path program 2 times [2020-11-12 12:28:49,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:28:49,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665425648] [2020-11-12 12:28:49,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:28:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:28:49,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:28:49,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665425648] [2020-11-12 12:28:49,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:28:49,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:28:49,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312339989] [2020-11-12 12:28:49,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:28:49,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:28:49,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:28:49,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:28:49,479 INFO L87 Difference]: Start difference. First operand 429 states and 428 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) [2020-11-12 12:28:49,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:28:49,573 INFO L93 Difference]: Finished difference Result 321 states and 320 transitions. [2020-11-12 12:28:49,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 12:28:49,573 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 [2020-11-12 12:28:49,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:28:49,575 INFO L225 Difference]: With dead ends: 321 [2020-11-12 12:28:49,575 INFO L226 Difference]: Without dead ends: 0 [2020-11-12 12:28:49,576 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 [2020-11-12 12:28:49,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-12 12:28:49,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-12 12:28:49,576 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) [2020-11-12 12:28:49,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-12 12:28:49,577 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2020-11-12 12:28:49,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:28:49,577 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-12 12:28:49,577 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) [2020-11-12 12:28:49,578 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-12 12:28:49,578 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-12 12:28:49,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-12 12:28:49,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:28:49 BasicIcfg [2020-11-12 12:28:49,584 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 12:28:49,587 INFO L168 Benchmark]: Toolchain (without parser) took 8732.73 ms. Allocated memory was 302.0 MB in the beginning and 1.2 GB in the end (delta: 947.9 MB). Free memory was 277.4 MB in the beginning and 1.1 GB in the end (delta: -789.4 MB). Peak memory consumption was 160.7 MB. Max. memory is 16.0 GB. [2020-11-12 12:28:49,589 INFO L168 Benchmark]: CDTParser took 0.84 ms. Allocated memory is still 302.0 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 12:28:49,598 INFO L168 Benchmark]: CACSL2BoogieTranslator took 660.82 ms. Allocated memory is still 302.0 MB. Free memory was 276.7 MB in the beginning and 246.0 MB in the end (delta: 30.7 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2020-11-12 12:28:49,599 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.61 ms. Allocated memory is still 302.0 MB. Free memory was 246.0 MB in the beginning and 244.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 12:28:49,600 INFO L168 Benchmark]: Boogie Preprocessor took 35.29 ms. Allocated memory is still 302.0 MB. Free memory was 244.0 MB in the beginning and 242.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 12:28:49,601 INFO L168 Benchmark]: RCFGBuilder took 646.71 ms. Allocated memory is still 302.0 MB. Free memory was 242.6 MB in the beginning and 264.4 MB in the end (delta: -21.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.0 GB. [2020-11-12 12:28:49,602 INFO L168 Benchmark]: TraceAbstraction took 7326.95 ms. Allocated memory was 302.0 MB in the beginning and 1.2 GB in the end (delta: 947.9 MB). Free memory was 263.3 MB in the beginning and 1.1 GB in the end (delta: -803.4 MB). Peak memory consumption was 145.5 MB. Max. memory is 16.0 GB. [2020-11-12 12:28:49,613 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.84 ms. Allocated memory is still 302.0 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 660.82 ms. Allocated memory is still 302.0 MB. Free memory was 276.7 MB in the beginning and 246.0 MB in the end (delta: 30.7 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 50.61 ms. Allocated memory is still 302.0 MB. Free memory was 246.0 MB in the beginning and 244.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 35.29 ms. Allocated memory is still 302.0 MB. Free memory was 244.0 MB in the beginning and 242.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 646.71 ms. Allocated memory is still 302.0 MB. Free memory was 242.6 MB in the beginning and 264.4 MB in the end (delta: -21.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 7326.95 ms. Allocated memory was 302.0 MB in the beginning and 1.2 GB in the end (delta: 947.9 MB). Free memory was 263.3 MB in the beginning and 1.1 GB in the end (delta: -803.4 MB). Peak memory consumption was 145.5 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: 7.1s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 463 SDtfs, 651 SDslu, 1740 SDs, 0 SdLazy, 187 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34217occurred 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: 0.6s AutomataMinimizationTime, 7 MinimizatonAttempts, 670 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 336 NumberOfCodeBlocks, 336 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 329 ConstructedInterpolants, 0 QuantifiedInterpolants, 38691 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...