/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-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:24:43,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:24:43,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:24:43,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:24:43,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:24:43,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:24:43,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:24:43,246 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:24:43,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:24:43,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:24:43,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:24:43,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:24:43,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:24:43,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:24:43,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:24:43,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:24:43,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:24:43,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:24:43,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:24:43,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:24:43,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:24:43,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:24:43,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:24:43,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:24:43,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:24:43,284 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:24:43,284 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:24:43,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:24:43,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:24:43,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:24:43,290 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:24:43,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:24:43,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:24:43,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:24:43,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:24:43,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:24:43,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:24:43,296 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:24:43,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:24:43,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:24:43,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:24:43,301 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-VariableLbe.epf [2020-04-18 02:24:43,322 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:24:43,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:24:43,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:24:43,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:24:43,325 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:24:43,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:24:43,326 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:24:43,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:24:43,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:24:43,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:24:43,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:24:43,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:24:43,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:24:43,328 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:24:43,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:24:43,329 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:24:43,329 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:24:43,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:24:43,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:24:43,329 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:24:43,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:24:43,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:24:43,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:24:43,330 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:24:43,330 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:24:43,330 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:24:43,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:24:43,331 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:24:43,331 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:24:43,331 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:24:43,621 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:24:43,639 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:24:43,644 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:24:43,646 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:24:43,646 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:24:43,647 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i [2020-04-18 02:24:43,720 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16d2f999d/2228ec523e9e4e15a280e6d4f379cea1/FLAG40a83091b [2020-04-18 02:24:44,287 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:24:44,287 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i [2020-04-18 02:24:44,311 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16d2f999d/2228ec523e9e4e15a280e6d4f379cea1/FLAG40a83091b [2020-04-18 02:24:44,579 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16d2f999d/2228ec523e9e4e15a280e6d4f379cea1 [2020-04-18 02:24:44,587 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:24:44,609 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:24:44,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:24:44,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:24:44,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:24:44,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:24:44" (1/1) ... [2020-04-18 02:24:44,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19d6573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:44, skipping insertion in model container [2020-04-18 02:24:44,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:24:44" (1/1) ... [2020-04-18 02:24:44,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:24:44,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:24:45,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:24:45,121 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:24:45,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:24:45,259 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:24:45,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:45 WrapperNode [2020-04-18 02:24:45,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:24:45,261 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:24:45,261 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:24:45,261 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:24:45,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:45" (1/1) ... [2020-04-18 02:24:45,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:45" (1/1) ... [2020-04-18 02:24:45,334 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:24:45,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:24:45,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:24:45,335 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:24:45,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:45" (1/1) ... [2020-04-18 02:24:45,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:45" (1/1) ... [2020-04-18 02:24:45,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:45" (1/1) ... [2020-04-18 02:24:45,348 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:45" (1/1) ... [2020-04-18 02:24:45,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:45" (1/1) ... [2020-04-18 02:24:45,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:45" (1/1) ... [2020-04-18 02:24:45,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:45" (1/1) ... [2020-04-18 02:24:45,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:24:45,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:24:45,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:24:45,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:24:45,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:24:45,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:24:45,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:24:45,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:24:45,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:24:45,435 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:24:45,436 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:24:45,436 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:24:45,436 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:24:45,436 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:24:45,436 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:24:45,436 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-18 02:24:45,437 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-18 02:24:45,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:24:45,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:24:45,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:24:45,439 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 02:24:45,881 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:24:45,882 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:24:45,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:24:45 BoogieIcfgContainer [2020-04-18 02:24:45,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:24:45,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:24:45,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:24:45,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:24:45,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:24:44" (1/3) ... [2020-04-18 02:24:45,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de88f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:24:45, skipping insertion in model container [2020-04-18 02:24:45,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:45" (2/3) ... [2020-04-18 02:24:45,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de88f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:24:45, skipping insertion in model container [2020-04-18 02:24:45,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:24:45" (3/3) ... [2020-04-18 02:24:45,895 INFO L109 eAbstractionObserver]: Analyzing ICFG safe016_tso.opt.i [2020-04-18 02:24:45,906 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:24:45,907 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:24:45,914 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:24:45,915 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:24:45,944 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,945 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,945 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,945 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,946 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,946 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,947 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,947 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,947 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,947 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,948 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,948 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,949 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,949 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,949 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,949 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,950 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,950 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,951 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,951 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,951 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,951 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,952 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,952 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,956 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,957 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,957 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,957 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,963 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,963 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,963 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,964 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,966 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,966 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,967 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,967 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,969 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,969 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,970 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,970 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:45,986 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 02:24:46,005 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:24:46,006 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:24:46,006 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:24:46,006 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:24:46,006 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:24:46,006 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:24:46,006 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:24:46,006 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:24:46,024 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-04-18 02:24:46,026 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-04-18 02:24:46,087 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-04-18 02:24:46,088 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:24:46,094 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-18 02:24:46,098 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-04-18 02:24:46,121 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-04-18 02:24:46,122 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:24:46,122 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-18 02:24:46,125 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-04-18 02:24:46,126 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:24:47,562 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-04-18 02:24:47,659 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2895 [2020-04-18 02:24:47,659 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-04-18 02:24:47,664 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-04-18 02:24:47,789 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-04-18 02:24:47,793 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-04-18 02:24:47,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:24:47,813 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:47,814 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:47,815 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:47,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:47,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-04-18 02:24:47,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:47,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771257523] [2020-04-18 02:24:47,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:48,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:48,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771257523] [2020-04-18 02:24:48,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:48,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:24:48,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478214720] [2020-04-18 02:24:48,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 02:24:48,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:48,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 02:24:48,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 02:24:48,122 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-04-18 02:24:48,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:48,173 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-04-18 02:24:48,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 02:24:48,175 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-04-18 02:24:48,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:48,206 INFO L225 Difference]: With dead ends: 850 [2020-04-18 02:24:48,207 INFO L226 Difference]: Without dead ends: 706 [2020-04-18 02:24:48,208 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 02:24:48,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-04-18 02:24:48,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-04-18 02:24:48,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-04-18 02:24:48,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-04-18 02:24:48,371 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-04-18 02:24:48,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:48,372 INFO L479 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-04-18 02:24:48,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 02:24:48,373 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-04-18 02:24:48,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:24:48,375 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:48,376 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:48,376 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:48,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:48,376 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-04-18 02:24:48,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:48,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652828278] [2020-04-18 02:24:48,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:48,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:48,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:48,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652828278] [2020-04-18 02:24:48,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:48,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:24:48,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889891457] [2020-04-18 02:24:48,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:48,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:48,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:48,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:48,546 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-04-18 02:24:48,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:48,608 INFO L93 Difference]: Finished difference Result 802 states and 2662 transitions. [2020-04-18 02:24:48,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:48,609 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 02:24:48,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:48,616 INFO L225 Difference]: With dead ends: 802 [2020-04-18 02:24:48,616 INFO L226 Difference]: Without dead ends: 658 [2020-04-18 02:24:48,617 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 [2020-04-18 02:24:48,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-04-18 02:24:48,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2020-04-18 02:24:48,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-04-18 02:24:48,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2230 transitions. [2020-04-18 02:24:48,664 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2230 transitions. Word has length 11 [2020-04-18 02:24:48,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:48,664 INFO L479 AbstractCegarLoop]: Abstraction has 658 states and 2230 transitions. [2020-04-18 02:24:48,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:48,664 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2230 transitions. [2020-04-18 02:24:48,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:24:48,671 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:48,671 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:48,671 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:48,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:48,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1502334909, now seen corresponding path program 1 times [2020-04-18 02:24:48,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:48,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198030832] [2020-04-18 02:24:48,673 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:48,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:48,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198030832] [2020-04-18 02:24:48,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:48,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:24:48,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874983822] [2020-04-18 02:24:48,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:48,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:48,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:48,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:48,796 INFO L87 Difference]: Start difference. First operand 658 states and 2230 transitions. Second operand 4 states. [2020-04-18 02:24:48,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:48,837 INFO L93 Difference]: Finished difference Result 738 states and 2404 transitions. [2020-04-18 02:24:48,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:48,837 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 02:24:48,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:48,843 INFO L225 Difference]: With dead ends: 738 [2020-04-18 02:24:48,843 INFO L226 Difference]: Without dead ends: 618 [2020-04-18 02:24:48,843 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 [2020-04-18 02:24:48,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-04-18 02:24:48,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 618. [2020-04-18 02:24:48,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-04-18 02:24:48,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 2058 transitions. [2020-04-18 02:24:48,869 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 2058 transitions. Word has length 12 [2020-04-18 02:24:48,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:48,869 INFO L479 AbstractCegarLoop]: Abstraction has 618 states and 2058 transitions. [2020-04-18 02:24:48,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:48,869 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 2058 transitions. [2020-04-18 02:24:48,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:24:48,871 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:48,871 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:48,871 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:48,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:48,871 INFO L82 PathProgramCache]: Analyzing trace with hash 672248787, now seen corresponding path program 1 times [2020-04-18 02:24:48,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:48,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794038245] [2020-04-18 02:24:48,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:48,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:48,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794038245] [2020-04-18 02:24:48,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:48,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:24:48,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121446890] [2020-04-18 02:24:48,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:48,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:48,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:48,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:48,922 INFO L87 Difference]: Start difference. First operand 618 states and 2058 transitions. Second operand 4 states. [2020-04-18 02:24:48,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:48,957 INFO L93 Difference]: Finished difference Result 658 states and 2130 transitions. [2020-04-18 02:24:48,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:48,957 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-18 02:24:48,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:48,962 INFO L225 Difference]: With dead ends: 658 [2020-04-18 02:24:48,963 INFO L226 Difference]: Without dead ends: 578 [2020-04-18 02:24:48,963 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 [2020-04-18 02:24:48,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-04-18 02:24:49,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2020-04-18 02:24:49,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-04-18 02:24:49,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1906 transitions. [2020-04-18 02:24:49,013 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1906 transitions. Word has length 13 [2020-04-18 02:24:49,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:49,014 INFO L479 AbstractCegarLoop]: Abstraction has 578 states and 1906 transitions. [2020-04-18 02:24:49,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:49,014 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1906 transitions. [2020-04-18 02:24:49,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:24:49,015 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:49,016 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:49,016 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:49,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:49,016 INFO L82 PathProgramCache]: Analyzing trace with hash 796896076, now seen corresponding path program 1 times [2020-04-18 02:24:49,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:49,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251674397] [2020-04-18 02:24:49,017 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:49,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:49,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251674397] [2020-04-18 02:24:49,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:49,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:24:49,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772635058] [2020-04-18 02:24:49,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:24:49,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:49,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:24:49,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:24:49,071 INFO L87 Difference]: Start difference. First operand 578 states and 1906 transitions. Second operand 5 states. [2020-04-18 02:24:49,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:49,120 INFO L93 Difference]: Finished difference Result 898 states and 2932 transitions. [2020-04-18 02:24:49,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:49,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-18 02:24:49,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:49,125 INFO L225 Difference]: With dead ends: 898 [2020-04-18 02:24:49,125 INFO L226 Difference]: Without dead ends: 530 [2020-04-18 02:24:49,125 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:24:49,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2020-04-18 02:24:49,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 530. [2020-04-18 02:24:49,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2020-04-18 02:24:49,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1708 transitions. [2020-04-18 02:24:49,144 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1708 transitions. Word has length 14 [2020-04-18 02:24:49,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:49,145 INFO L479 AbstractCegarLoop]: Abstraction has 530 states and 1708 transitions. [2020-04-18 02:24:49,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:24:49,145 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1708 transitions. [2020-04-18 02:24:49,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:24:49,146 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:49,146 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:49,147 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:49,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:49,147 INFO L82 PathProgramCache]: Analyzing trace with hash -635139139, now seen corresponding path program 1 times [2020-04-18 02:24:49,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:49,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412996397] [2020-04-18 02:24:49,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:49,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:49,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:49,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412996397] [2020-04-18 02:24:49,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:49,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:24:49,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923969051] [2020-04-18 02:24:49,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:49,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:49,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:49,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:49,204 INFO L87 Difference]: Start difference. First operand 530 states and 1708 transitions. Second operand 4 states. [2020-04-18 02:24:49,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:49,232 INFO L93 Difference]: Finished difference Result 562 states and 1764 transitions. [2020-04-18 02:24:49,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:49,232 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-18 02:24:49,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:49,236 INFO L225 Difference]: With dead ends: 562 [2020-04-18 02:24:49,236 INFO L226 Difference]: Without dead ends: 498 [2020-04-18 02:24:49,237 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 [2020-04-18 02:24:49,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2020-04-18 02:24:49,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 498. [2020-04-18 02:24:49,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2020-04-18 02:24:49,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1588 transitions. [2020-04-18 02:24:49,253 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1588 transitions. Word has length 14 [2020-04-18 02:24:49,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:49,254 INFO L479 AbstractCegarLoop]: Abstraction has 498 states and 1588 transitions. [2020-04-18 02:24:49,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:49,254 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1588 transitions. [2020-04-18 02:24:49,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:24:49,255 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:49,255 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:49,256 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:49,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:49,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1533442537, now seen corresponding path program 1 times [2020-04-18 02:24:49,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:49,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995217947] [2020-04-18 02:24:49,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:49,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:49,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995217947] [2020-04-18 02:24:49,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:49,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:24:49,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628533667] [2020-04-18 02:24:49,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:24:49,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:49,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:24:49,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:24:49,322 INFO L87 Difference]: Start difference. First operand 498 states and 1588 transitions. Second operand 5 states. [2020-04-18 02:24:49,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:49,422 INFO L93 Difference]: Finished difference Result 970 states and 2936 transitions. [2020-04-18 02:24:49,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 02:24:49,422 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-18 02:24:49,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:49,427 INFO L225 Difference]: With dead ends: 970 [2020-04-18 02:24:49,428 INFO L226 Difference]: Without dead ends: 482 [2020-04-18 02:24:49,430 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 02:24:49,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-04-18 02:24:49,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 418. [2020-04-18 02:24:49,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-04-18 02:24:49,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1226 transitions. [2020-04-18 02:24:49,448 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1226 transitions. Word has length 15 [2020-04-18 02:24:49,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:49,449 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 1226 transitions. [2020-04-18 02:24:49,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:24:49,449 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1226 transitions. [2020-04-18 02:24:49,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:24:49,451 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:49,451 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:49,451 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:49,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:49,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1081767860, now seen corresponding path program 1 times [2020-04-18 02:24:49,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:49,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142442039] [2020-04-18 02:24:49,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:49,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:49,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142442039] [2020-04-18 02:24:49,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:49,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:24:49,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715444096] [2020-04-18 02:24:49,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:24:49,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:49,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:24:49,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:24:49,547 INFO L87 Difference]: Start difference. First operand 418 states and 1226 transitions. Second operand 5 states. [2020-04-18 02:24:49,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:49,591 INFO L93 Difference]: Finished difference Result 590 states and 1698 transitions. [2020-04-18 02:24:49,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:49,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-18 02:24:49,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:49,594 INFO L225 Difference]: With dead ends: 590 [2020-04-18 02:24:49,594 INFO L226 Difference]: Without dead ends: 302 [2020-04-18 02:24:49,595 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:24:49,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-04-18 02:24:49,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2020-04-18 02:24:49,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-04-18 02:24:49,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 871 transitions. [2020-04-18 02:24:49,611 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 871 transitions. Word has length 15 [2020-04-18 02:24:49,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:49,612 INFO L479 AbstractCegarLoop]: Abstraction has 302 states and 871 transitions. [2020-04-18 02:24:49,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:24:49,620 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 871 transitions. [2020-04-18 02:24:49,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:24:49,622 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:49,622 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:49,622 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:49,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:49,623 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 2 times [2020-04-18 02:24:49,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:49,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271571664] [2020-04-18 02:24:49,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:49,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:49,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271571664] [2020-04-18 02:24:49,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:49,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:24:49,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763096477] [2020-04-18 02:24:49,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:49,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:49,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:49,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:49,691 INFO L87 Difference]: Start difference. First operand 302 states and 871 transitions. Second operand 4 states. [2020-04-18 02:24:49,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:49,737 INFO L93 Difference]: Finished difference Result 356 states and 942 transitions. [2020-04-18 02:24:49,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:49,737 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-04-18 02:24:49,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:49,739 INFO L225 Difference]: With dead ends: 356 [2020-04-18 02:24:49,739 INFO L226 Difference]: Without dead ends: 271 [2020-04-18 02:24:49,740 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 [2020-04-18 02:24:49,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-04-18 02:24:49,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2020-04-18 02:24:49,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-04-18 02:24:49,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 731 transitions. [2020-04-18 02:24:49,749 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 731 transitions. Word has length 15 [2020-04-18 02:24:49,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:49,749 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 731 transitions. [2020-04-18 02:24:49,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:49,749 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 731 transitions. [2020-04-18 02:24:49,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 02:24:49,750 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:49,750 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:49,750 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:49,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:49,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1481069530, now seen corresponding path program 1 times [2020-04-18 02:24:49,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:49,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44467600] [2020-04-18 02:24:49,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:49,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:49,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44467600] [2020-04-18 02:24:49,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:49,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:24:49,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006227441] [2020-04-18 02:24:49,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:24:49,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:49,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:24:49,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:24:49,801 INFO L87 Difference]: Start difference. First operand 271 states and 731 transitions. Second operand 5 states. [2020-04-18 02:24:49,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:49,866 INFO L93 Difference]: Finished difference Result 269 states and 645 transitions. [2020-04-18 02:24:49,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:24:49,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-04-18 02:24:49,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:49,868 INFO L225 Difference]: With dead ends: 269 [2020-04-18 02:24:49,868 INFO L226 Difference]: Without dead ends: 201 [2020-04-18 02:24:49,869 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:24:49,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-04-18 02:24:49,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2020-04-18 02:24:49,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-04-18 02:24:49,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 474 transitions. [2020-04-18 02:24:49,875 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 474 transitions. Word has length 16 [2020-04-18 02:24:49,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:49,876 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 474 transitions. [2020-04-18 02:24:49,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:24:49,876 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 474 transitions. [2020-04-18 02:24:49,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 02:24:49,876 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:49,877 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:49,877 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:49,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:49,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-04-18 02:24:49,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:49,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050422300] [2020-04-18 02:24:49,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:49,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:49,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050422300] [2020-04-18 02:24:49,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:49,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 02:24:49,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398951398] [2020-04-18 02:24:49,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:24:49,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:49,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:24:49,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:24:49,932 INFO L87 Difference]: Start difference. First operand 201 states and 474 transitions. Second operand 6 states. [2020-04-18 02:24:49,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:49,988 INFO L93 Difference]: Finished difference Result 178 states and 389 transitions. [2020-04-18 02:24:49,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 02:24:49,989 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-04-18 02:24:49,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:49,990 INFO L225 Difference]: With dead ends: 178 [2020-04-18 02:24:49,990 INFO L226 Difference]: Without dead ends: 144 [2020-04-18 02:24:49,991 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:24:49,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-04-18 02:24:49,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-04-18 02:24:49,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-04-18 02:24:49,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 314 transitions. [2020-04-18 02:24:49,996 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 314 transitions. Word has length 17 [2020-04-18 02:24:49,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:49,996 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 314 transitions. [2020-04-18 02:24:49,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:24:49,996 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 314 transitions. [2020-04-18 02:24:49,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 02:24:49,997 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:49,997 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:49,997 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:49,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:49,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 1 times [2020-04-18 02:24:49,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:49,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099739594] [2020-04-18 02:24:49,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:50,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:50,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099739594] [2020-04-18 02:24:50,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:50,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 02:24:50,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521741476] [2020-04-18 02:24:50,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 02:24:50,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:50,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 02:24:50,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:24:50,063 INFO L87 Difference]: Start difference. First operand 144 states and 314 transitions. Second operand 7 states. [2020-04-18 02:24:50,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:50,139 INFO L93 Difference]: Finished difference Result 133 states and 290 transitions. [2020-04-18 02:24:50,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 02:24:50,139 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-04-18 02:24:50,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:50,140 INFO L225 Difference]: With dead ends: 133 [2020-04-18 02:24:50,140 INFO L226 Difference]: Without dead ends: 52 [2020-04-18 02:24:50,141 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-04-18 02:24:50,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-04-18 02:24:50,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-04-18 02:24:50,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-04-18 02:24:50,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 98 transitions. [2020-04-18 02:24:50,144 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 98 transitions. Word has length 19 [2020-04-18 02:24:50,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:50,144 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 98 transitions. [2020-04-18 02:24:50,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 02:24:50,144 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 98 transitions. [2020-04-18 02:24:50,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 02:24:50,145 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:50,145 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:50,145 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:50,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:50,146 INFO L82 PathProgramCache]: Analyzing trace with hash 2139262285, now seen corresponding path program 1 times [2020-04-18 02:24:50,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:50,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370794998] [2020-04-18 02:24:50,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:50,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:50,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370794998] [2020-04-18 02:24:50,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:50,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:24:50,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908364995] [2020-04-18 02:24:50,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:50,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:50,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:50,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:50,208 INFO L87 Difference]: Start difference. First operand 52 states and 98 transitions. Second operand 4 states. [2020-04-18 02:24:50,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:50,230 INFO L93 Difference]: Finished difference Result 51 states and 97 transitions. [2020-04-18 02:24:50,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:24:50,230 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-04-18 02:24:50,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:50,231 INFO L225 Difference]: With dead ends: 51 [2020-04-18 02:24:50,232 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:24:50,232 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 [2020-04-18 02:24:50,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:24:50,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:24:50,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:24:50,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:24:50,233 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-04-18 02:24:50,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:50,234 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:24:50,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:50,234 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:24:50,235 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:24:50,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:24:50 BasicIcfg [2020-04-18 02:24:50,240 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:24:50,243 INFO L168 Benchmark]: Toolchain (without parser) took 5653.82 ms. Allocated memory was 139.5 MB in the beginning and 288.9 MB in the end (delta: 149.4 MB). Free memory was 102.7 MB in the beginning and 198.2 MB in the end (delta: -95.5 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:24:50,245 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 139.5 MB. Free memory is still 122.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:24:50,246 INFO L168 Benchmark]: CACSL2BoogieTranslator took 650.91 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 100.8 MB in the beginning and 157.8 MB in the end (delta: -57.0 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-04-18 02:24:50,247 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.32 ms. Allocated memory is still 203.9 MB. Free memory was 157.8 MB in the beginning and 155.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:24:50,248 INFO L168 Benchmark]: Boogie Preprocessor took 29.19 ms. Allocated memory is still 203.9 MB. Free memory was 155.9 MB in the beginning and 154.9 MB in the end (delta: 977.6 kB). Peak memory consumption was 977.6 kB. Max. memory is 7.1 GB. [2020-04-18 02:24:50,258 INFO L168 Benchmark]: RCFGBuilder took 521.22 ms. Allocated memory is still 203.9 MB. Free memory was 153.9 MB in the beginning and 130.8 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:24:50,259 INFO L168 Benchmark]: TraceAbstraction took 4352.48 ms. Allocated memory was 203.9 MB in the beginning and 288.9 MB in the end (delta: 84.9 MB). Free memory was 129.8 MB in the beginning and 198.2 MB in the end (delta: -68.4 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2020-04-18 02:24:50,264 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 139.5 MB. Free memory is still 122.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 650.91 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 100.8 MB in the beginning and 157.8 MB in the end (delta: -57.0 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 73.32 ms. Allocated memory is still 203.9 MB. Free memory was 157.8 MB in the beginning and 155.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.19 ms. Allocated memory is still 203.9 MB. Free memory was 155.9 MB in the beginning and 154.9 MB in the end (delta: 977.6 kB). Peak memory consumption was 977.6 kB. Max. memory is 7.1 GB. * RCFGBuilder took 521.22 ms. Allocated memory is still 203.9 MB. Free memory was 153.9 MB in the beginning and 130.8 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4352.48 ms. Allocated memory was 203.9 MB in the beginning and 288.9 MB in the end (delta: 84.9 MB). Free memory was 129.8 MB in the beginning and 198.2 MB in the end (delta: -68.4 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 91 ProgramPointsBefore, 39 ProgramPointsAfterwards, 80 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 927 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2895 CheckedPairsTotal, 62 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 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 346 SDtfs, 343 SDslu, 593 SDs, 0 SdLazy, 236 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred 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: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 64 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 192 NumberOfCodeBlocks, 192 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 179 ConstructedInterpolants, 0 QuantifiedInterpolants, 7441 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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...