/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 22:09:41,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 22:09:41,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 22:09:41,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 22:09:41,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 22:09:41,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 22:09:41,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 22:09:41,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 22:09:41,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 22:09:41,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 22:09:41,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 22:09:41,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 22:09:41,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 22:09:41,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 22:09:41,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 22:09:41,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 22:09:41,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 22:09:41,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 22:09:41,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 22:09:41,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 22:09:41,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 22:09:41,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 22:09:41,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 22:09:41,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 22:09:41,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 22:09:41,258 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 22:09:41,258 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 22:09:41,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 22:09:41,259 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 22:09:41,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 22:09:41,261 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 22:09:41,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 22:09:41,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 22:09:41,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 22:09:41,266 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 22:09:41,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 22:09:41,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 22:09:41,267 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 22:09:41,267 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 22:09:41,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 22:09:41,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 22:09:41,271 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-04-17 22:09:41,285 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 22:09:41,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 22:09:41,286 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 22:09:41,287 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 22:09:41,287 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 22:09:41,287 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 22:09:41,287 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 22:09:41,287 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 22:09:41,288 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 22:09:41,288 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 22:09:41,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 22:09:41,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 22:09:41,288 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 22:09:41,288 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 22:09:41,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 22:09:41,289 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 22:09:41,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 22:09:41,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 22:09:41,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 22:09:41,290 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 22:09:41,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 22:09:41,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:09:41,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 22:09:41,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 22:09:41,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 22:09:41,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 22:09:41,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 22:09:41,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 22:09:41,292 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 22:09:41,590 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 22:09:41,605 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 22:09:41,608 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 22:09:41,610 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 22:09:41,611 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 22:09:41,612 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i [2020-04-17 22:09:41,683 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e36fb42d4/6c5bfd35ce4d4a838dbc1cb264e3971a/FLAG7c70ca239 [2020-04-17 22:09:42,177 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 22:09:42,178 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i [2020-04-17 22:09:42,198 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e36fb42d4/6c5bfd35ce4d4a838dbc1cb264e3971a/FLAG7c70ca239 [2020-04-17 22:09:42,534 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e36fb42d4/6c5bfd35ce4d4a838dbc1cb264e3971a [2020-04-17 22:09:42,541 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 22:09:42,558 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 22:09:42,560 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 22:09:42,560 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 22:09:42,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 22:09:42,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:09:42" (1/1) ... [2020-04-17 22:09:42,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@574de9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:09:42, skipping insertion in model container [2020-04-17 22:09:42,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:09:42" (1/1) ... [2020-04-17 22:09:42,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 22:09:42,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 22:09:43,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:09:43,132 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 22:09:43,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:09:43,271 INFO L208 MainTranslator]: Completed translation [2020-04-17 22:09:43,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:09:43 WrapperNode [2020-04-17 22:09:43,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 22:09:43,273 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 22:09:43,274 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 22:09:43,274 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 22:09:43,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:09:43" (1/1) ... [2020-04-17 22:09:43,296 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:09:43" (1/1) ... [2020-04-17 22:09:43,318 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 22:09:43,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 22:09:43,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 22:09:43,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 22:09:43,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:09:43" (1/1) ... [2020-04-17 22:09:43,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:09:43" (1/1) ... [2020-04-17 22:09:43,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:09:43" (1/1) ... [2020-04-17 22:09:43,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:09:43" (1/1) ... [2020-04-17 22:09:43,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:09:43" (1/1) ... [2020-04-17 22:09:43,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:09:43" (1/1) ... [2020-04-17 22:09:43,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:09:43" (1/1) ... [2020-04-17 22:09:43,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 22:09:43,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 22:09:43,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 22:09:43,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 22:09:43,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:09:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:09:43,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 22:09:43,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 22:09:43,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 22:09:43,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 22:09:43,417 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 22:09:43,417 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 22:09:43,418 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 22:09:43,418 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 22:09:43,418 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 22:09:43,418 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 22:09:43,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 22:09:43,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 22:09:43,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 22:09:43,420 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 22:09:43,814 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 22:09:43,815 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 22:09:43,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:09:43 BoogieIcfgContainer [2020-04-17 22:09:43,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 22:09:43,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 22:09:43,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 22:09:43,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 22:09:43,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 10:09:42" (1/3) ... [2020-04-17 22:09:43,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@134848c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:09:43, skipping insertion in model container [2020-04-17 22:09:43,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:09:43" (2/3) ... [2020-04-17 22:09:43,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@134848c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:09:43, skipping insertion in model container [2020-04-17 22:09:43,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:09:43" (3/3) ... [2020-04-17 22:09:43,828 INFO L109 eAbstractionObserver]: Analyzing ICFG safe017_tso.opt.i [2020-04-17 22:09:43,836 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 22:09:43,837 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 22:09:43,845 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 22:09:43,846 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 22:09:43,875 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:43,875 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:43,875 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:43,876 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:43,876 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:43,877 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:43,877 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:43,878 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:43,878 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:43,878 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:43,879 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:43,879 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:43,879 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:43,880 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:43,880 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:43,880 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:43,881 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:43,881 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:43,885 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:43,886 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:43,886 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:43,886 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:43,892 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:43,892 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:43,893 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:43,893 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:43,896 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:43,896 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:43,896 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:43,896 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:09:43,913 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 22:09:43,933 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 22:09:43,933 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 22:09:43,934 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 22:09:43,934 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 22:09:43,934 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 22:09:43,934 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 22:09:43,934 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 22:09:43,935 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 22:09:43,950 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 67 transitions, 149 flow [2020-04-17 22:09:43,952 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 67 transitions, 149 flow [2020-04-17 22:09:43,995 INFO L129 PetriNetUnfolder]: 2/64 cut-off events. [2020-04-17 22:09:43,995 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:09:44,000 INFO L80 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 64 events. 2/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-17 22:09:44,003 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 67 transitions, 149 flow [2020-04-17 22:09:44,023 INFO L129 PetriNetUnfolder]: 2/64 cut-off events. [2020-04-17 22:09:44,023 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:09:44,024 INFO L80 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 64 events. 2/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-17 22:09:44,026 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-04-17 22:09:44,027 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 22:09:45,904 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1818 [2020-04-17 22:09:45,904 INFO L214 etLargeBlockEncoding]: Total number of compositions: 52 [2020-04-17 22:09:45,908 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-04-17 22:09:45,929 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-04-17 22:09:45,932 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-04-17 22:09:45,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 22:09:45,940 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:09:45,941 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:09:45,941 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:09:45,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:09:45,947 INFO L82 PathProgramCache]: Analyzing trace with hash -540517404, now seen corresponding path program 1 times [2020-04-17 22:09:45,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:09:45,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101821695] [2020-04-17 22:09:45,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:09:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:09:46,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:09:46,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101821695] [2020-04-17 22:09:46,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:09:46,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:09:46,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232501739] [2020-04-17 22:09:46,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:09:46,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:09:46,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:09:46,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:09:46,245 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-04-17 22:09:46,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:09:46,310 INFO L93 Difference]: Finished difference Result 220 states and 612 transitions. [2020-04-17 22:09:46,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:09:46,313 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 22:09:46,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:09:46,341 INFO L225 Difference]: With dead ends: 220 [2020-04-17 22:09:46,341 INFO L226 Difference]: Without dead ends: 172 [2020-04-17 22:09:46,343 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:09:46,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-04-17 22:09:46,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-04-17 22:09:46,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-04-17 22:09:46,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 460 transitions. [2020-04-17 22:09:46,405 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 460 transitions. Word has length 8 [2020-04-17 22:09:46,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:09:46,407 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 460 transitions. [2020-04-17 22:09:46,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:09:46,407 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 460 transitions. [2020-04-17 22:09:46,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 22:09:46,409 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:09:46,409 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:09:46,409 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:09:46,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:09:46,410 INFO L82 PathProgramCache]: Analyzing trace with hash 533202091, now seen corresponding path program 1 times [2020-04-17 22:09:46,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:09:46,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386355123] [2020-04-17 22:09:46,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:09:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:09:46,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:09:46,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386355123] [2020-04-17 22:09:46,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:09:46,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:09:46,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105886866] [2020-04-17 22:09:46,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:09:46,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:09:46,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:09:46,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:09:46,517 INFO L87 Difference]: Start difference. First operand 172 states and 460 transitions. Second operand 3 states. [2020-04-17 22:09:46,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:09:46,531 INFO L93 Difference]: Finished difference Result 166 states and 438 transitions. [2020-04-17 22:09:46,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:09:46,531 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-17 22:09:46,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:09:46,534 INFO L225 Difference]: With dead ends: 166 [2020-04-17 22:09:46,534 INFO L226 Difference]: Without dead ends: 166 [2020-04-17 22:09:46,535 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:09:46,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-04-17 22:09:46,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-04-17 22:09:46,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-04-17 22:09:46,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 438 transitions. [2020-04-17 22:09:46,553 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 438 transitions. Word has length 9 [2020-04-17 22:09:46,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:09:46,554 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 438 transitions. [2020-04-17 22:09:46,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:09:46,554 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 438 transitions. [2020-04-17 22:09:46,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 22:09:46,556 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:09:46,556 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:09:46,556 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:09:46,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:09:46,556 INFO L82 PathProgramCache]: Analyzing trace with hash -650605017, now seen corresponding path program 1 times [2020-04-17 22:09:46,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:09:46,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210082758] [2020-04-17 22:09:46,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:09:46,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:09:46,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:09:46,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210082758] [2020-04-17 22:09:46,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:09:46,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:09:46,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489905865] [2020-04-17 22:09:46,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:09:46,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:09:46,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:09:46,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:09:46,603 INFO L87 Difference]: Start difference. First operand 166 states and 438 transitions. Second operand 3 states. [2020-04-17 22:09:46,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:09:46,617 INFO L93 Difference]: Finished difference Result 158 states and 412 transitions. [2020-04-17 22:09:46,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:09:46,617 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-17 22:09:46,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:09:46,619 INFO L225 Difference]: With dead ends: 158 [2020-04-17 22:09:46,619 INFO L226 Difference]: Without dead ends: 158 [2020-04-17 22:09:46,620 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:09:46,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-04-17 22:09:46,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-04-17 22:09:46,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-04-17 22:09:46,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 412 transitions. [2020-04-17 22:09:46,634 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 412 transitions. Word has length 10 [2020-04-17 22:09:46,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:09:46,635 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 412 transitions. [2020-04-17 22:09:46,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:09:46,635 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 412 transitions. [2020-04-17 22:09:46,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 22:09:46,636 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:09:46,636 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:09:46,637 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:09:46,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:09:46,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1305380691, now seen corresponding path program 1 times [2020-04-17 22:09:46,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:09:46,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380626355] [2020-04-17 22:09:46,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:09:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:09:46,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:09:46,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380626355] [2020-04-17 22:09:46,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:09:46,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:09:46,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632677373] [2020-04-17 22:09:46,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:09:46,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:09:46,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:09:46,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:09:46,705 INFO L87 Difference]: Start difference. First operand 158 states and 412 transitions. Second operand 4 states. [2020-04-17 22:09:46,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:09:46,752 INFO L93 Difference]: Finished difference Result 218 states and 560 transitions. [2020-04-17 22:09:46,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:09:46,753 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 22:09:46,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:09:46,754 INFO L225 Difference]: With dead ends: 218 [2020-04-17 22:09:46,754 INFO L226 Difference]: Without dead ends: 146 [2020-04-17 22:09:46,755 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:09:46,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-17 22:09:46,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-17 22:09:46,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-17 22:09:46,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 370 transitions. [2020-04-17 22:09:46,765 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 370 transitions. Word has length 11 [2020-04-17 22:09:46,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:09:46,766 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 370 transitions. [2020-04-17 22:09:46,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:09:46,766 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 370 transitions. [2020-04-17 22:09:46,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 22:09:46,767 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:09:46,767 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:09:46,768 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:09:46,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:09:46,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1306080051, now seen corresponding path program 2 times [2020-04-17 22:09:46,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:09:46,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290947559] [2020-04-17 22:09:46,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:09:46,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:09:46,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:09:46,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290947559] [2020-04-17 22:09:46,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:09:46,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:09:46,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551611642] [2020-04-17 22:09:46,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:09:46,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:09:46,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:09:46,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:09:46,862 INFO L87 Difference]: Start difference. First operand 146 states and 370 transitions. Second operand 4 states. [2020-04-17 22:09:46,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:09:46,906 INFO L93 Difference]: Finished difference Result 167 states and 388 transitions. [2020-04-17 22:09:46,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:09:46,907 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 22:09:46,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:09:46,909 INFO L225 Difference]: With dead ends: 167 [2020-04-17 22:09:46,909 INFO L226 Difference]: Without dead ends: 125 [2020-04-17 22:09:46,910 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:09:46,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-04-17 22:09:46,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-04-17 22:09:46,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-04-17 22:09:46,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 288 transitions. [2020-04-17 22:09:46,917 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 288 transitions. Word has length 11 [2020-04-17 22:09:46,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:09:46,917 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 288 transitions. [2020-04-17 22:09:46,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:09:46,918 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 288 transitions. [2020-04-17 22:09:46,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 22:09:46,919 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:09:46,919 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:09:46,919 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:09:46,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:09:46,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1819207960, now seen corresponding path program 1 times [2020-04-17 22:09:46,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:09:46,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817007003] [2020-04-17 22:09:46,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:09:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:09:47,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:09:47,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817007003] [2020-04-17 22:09:47,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:09:47,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:09:47,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144794389] [2020-04-17 22:09:47,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:09:47,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:09:47,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:09:47,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:09:47,011 INFO L87 Difference]: Start difference. First operand 125 states and 288 transitions. Second operand 5 states. [2020-04-17 22:09:47,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:09:47,060 INFO L93 Difference]: Finished difference Result 121 states and 257 transitions. [2020-04-17 22:09:47,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:09:47,061 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-17 22:09:47,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:09:47,062 INFO L225 Difference]: With dead ends: 121 [2020-04-17 22:09:47,062 INFO L226 Difference]: Without dead ends: 93 [2020-04-17 22:09:47,062 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:09:47,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-04-17 22:09:47,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-04-17 22:09:47,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-04-17 22:09:47,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 192 transitions. [2020-04-17 22:09:47,067 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 192 transitions. Word has length 12 [2020-04-17 22:09:47,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:09:47,068 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 192 transitions. [2020-04-17 22:09:47,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:09:47,068 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 192 transitions. [2020-04-17 22:09:47,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 22:09:47,069 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:09:47,069 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:09:47,069 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:09:47,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:09:47,070 INFO L82 PathProgramCache]: Analyzing trace with hash 589619789, now seen corresponding path program 1 times [2020-04-17 22:09:47,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:09:47,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284768296] [2020-04-17 22:09:47,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:09:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:09:47,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:09:47,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284768296] [2020-04-17 22:09:47,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:09:47,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:09:47,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318603713] [2020-04-17 22:09:47,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:09:47,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:09:47,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:09:47,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:09:47,100 INFO L87 Difference]: Start difference. First operand 93 states and 192 transitions. Second operand 3 states. [2020-04-17 22:09:47,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:09:47,110 INFO L93 Difference]: Finished difference Result 110 states and 218 transitions. [2020-04-17 22:09:47,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:09:47,111 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-04-17 22:09:47,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:09:47,112 INFO L225 Difference]: With dead ends: 110 [2020-04-17 22:09:47,112 INFO L226 Difference]: Without dead ends: 88 [2020-04-17 22:09:47,113 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:09:47,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-04-17 22:09:47,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-04-17 22:09:47,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-04-17 22:09:47,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 169 transitions. [2020-04-17 22:09:47,118 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 169 transitions. Word has length 13 [2020-04-17 22:09:47,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:09:47,118 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 169 transitions. [2020-04-17 22:09:47,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:09:47,119 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 169 transitions. [2020-04-17 22:09:47,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 22:09:47,123 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:09:47,123 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:09:47,123 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:09:47,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:09:47,124 INFO L82 PathProgramCache]: Analyzing trace with hash 205369494, now seen corresponding path program 1 times [2020-04-17 22:09:47,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:09:47,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33453223] [2020-04-17 22:09:47,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:09:47,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:09:47,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:09:47,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33453223] [2020-04-17 22:09:47,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:09:47,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:09:47,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257604171] [2020-04-17 22:09:47,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:09:47,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:09:47,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:09:47,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:09:47,176 INFO L87 Difference]: Start difference. First operand 86 states and 169 transitions. Second operand 3 states. [2020-04-17 22:09:47,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:09:47,191 INFO L93 Difference]: Finished difference Result 104 states and 195 transitions. [2020-04-17 22:09:47,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:09:47,192 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-04-17 22:09:47,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:09:47,192 INFO L225 Difference]: With dead ends: 104 [2020-04-17 22:09:47,193 INFO L226 Difference]: Without dead ends: 66 [2020-04-17 22:09:47,193 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:09:47,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-04-17 22:09:47,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-04-17 22:09:47,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-04-17 22:09:47,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 111 transitions. [2020-04-17 22:09:47,196 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 111 transitions. Word has length 14 [2020-04-17 22:09:47,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:09:47,197 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 111 transitions. [2020-04-17 22:09:47,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:09:47,197 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 111 transitions. [2020-04-17 22:09:47,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 22:09:47,198 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:09:47,198 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:09:47,198 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:09:47,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:09:47,213 INFO L82 PathProgramCache]: Analyzing trace with hash -610616562, now seen corresponding path program 2 times [2020-04-17 22:09:47,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:09:47,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927473019] [2020-04-17 22:09:47,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:09:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:09:47,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:09:47,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927473019] [2020-04-17 22:09:47,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:09:47,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:09:47,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231010526] [2020-04-17 22:09:47,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:09:47,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:09:47,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:09:47,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:09:47,260 INFO L87 Difference]: Start difference. First operand 65 states and 111 transitions. Second operand 4 states. [2020-04-17 22:09:47,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:09:47,280 INFO L93 Difference]: Finished difference Result 71 states and 116 transitions. [2020-04-17 22:09:47,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:09:47,284 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-17 22:09:47,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:09:47,285 INFO L225 Difference]: With dead ends: 71 [2020-04-17 22:09:47,285 INFO L226 Difference]: Without dead ends: 64 [2020-04-17 22:09:47,286 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:09:47,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-04-17 22:09:47,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-04-17 22:09:47,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-04-17 22:09:47,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 106 transitions. [2020-04-17 22:09:47,289 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 106 transitions. Word has length 14 [2020-04-17 22:09:47,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:09:47,289 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 106 transitions. [2020-04-17 22:09:47,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:09:47,290 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 106 transitions. [2020-04-17 22:09:47,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 22:09:47,290 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:09:47,291 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:09:47,291 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:09:47,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:09:47,291 INFO L82 PathProgramCache]: Analyzing trace with hash -375565572, now seen corresponding path program 3 times [2020-04-17 22:09:47,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:09:47,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946576798] [2020-04-17 22:09:47,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:09:47,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:09:47,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:09:47,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946576798] [2020-04-17 22:09:47,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:09:47,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:09:47,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487775116] [2020-04-17 22:09:47,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 22:09:47,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:09:47,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 22:09:47,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:09:47,385 INFO L87 Difference]: Start difference. First operand 63 states and 106 transitions. Second operand 6 states. [2020-04-17 22:09:47,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:09:47,418 INFO L93 Difference]: Finished difference Result 58 states and 100 transitions. [2020-04-17 22:09:47,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:09:47,418 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-04-17 22:09:47,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:09:47,419 INFO L225 Difference]: With dead ends: 58 [2020-04-17 22:09:47,419 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 22:09:47,419 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-17 22:09:47,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 22:09:47,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 22:09:47,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 22:09:47,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 22:09:47,420 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-04-17 22:09:47,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:09:47,420 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 22:09:47,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 22:09:47,421 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 22:09:47,421 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 22:09:47,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 10:09:47 BasicIcfg [2020-04-17 22:09:47,425 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 22:09:47,427 INFO L168 Benchmark]: Toolchain (without parser) took 4883.42 ms. Allocated memory was 136.3 MB in the beginning and 254.3 MB in the end (delta: 118.0 MB). Free memory was 99.2 MB in the beginning and 197.4 MB in the end (delta: -98.2 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-04-17 22:09:47,428 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-17 22:09:47,429 INFO L168 Benchmark]: CACSL2BoogieTranslator took 713.50 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 97.2 MB in the beginning and 156.8 MB in the end (delta: -59.6 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-04-17 22:09:47,430 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.34 ms. Allocated memory is still 200.3 MB. Free memory was 156.8 MB in the beginning and 154.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-17 22:09:47,430 INFO L168 Benchmark]: Boogie Preprocessor took 35.93 ms. Allocated memory is still 200.3 MB. Free memory was 154.7 MB in the beginning and 153.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-17 22:09:47,431 INFO L168 Benchmark]: RCFGBuilder took 463.84 ms. Allocated memory is still 200.3 MB. Free memory was 153.3 MB in the beginning and 131.8 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-04-17 22:09:47,432 INFO L168 Benchmark]: TraceAbstraction took 3603.95 ms. Allocated memory was 200.3 MB in the beginning and 254.3 MB in the end (delta: 54.0 MB). Free memory was 131.1 MB in the beginning and 197.4 MB in the end (delta: -66.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-17 22:09:47,436 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 713.50 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 97.2 MB in the beginning and 156.8 MB in the end (delta: -59.6 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 45.34 ms. Allocated memory is still 200.3 MB. Free memory was 156.8 MB in the beginning and 154.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.93 ms. Allocated memory is still 200.3 MB. Free memory was 154.7 MB in the beginning and 153.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 463.84 ms. Allocated memory is still 200.3 MB. Free memory was 153.3 MB in the beginning and 131.8 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3603.95 ms. Allocated memory was 200.3 MB in the beginning and 254.3 MB in the end (delta: 54.0 MB). Free memory was 131.1 MB in the beginning and 197.4 MB in the end (delta: -66.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 75 ProgramPointsBefore, 30 ProgramPointsAfterwards, 67 TransitionsBefore, 20 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 6 FixpointIterations, 12 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 621 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 16 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 1818 CheckedPairsTotal, 52 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 66 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 179 SDtfs, 120 SDslu, 194 SDs, 0 SdLazy, 99 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 3056 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...