/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-nondet/nondet-array-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 19:24:44,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 19:24:44,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 19:24:44,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 19:24:44,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 19:24:44,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 19:24:44,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 19:24:44,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 19:24:44,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 19:24:44,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 19:24:44,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 19:24:44,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 19:24:44,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 19:24:44,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 19:24:44,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 19:24:44,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 19:24:44,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 19:24:44,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 19:24:44,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 19:24:44,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 19:24:44,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 19:24:44,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 19:24:44,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 19:24:44,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 19:24:44,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 19:24:44,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 19:24:44,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 19:24:44,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 19:24:44,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 19:24:44,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 19:24:44,227 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 19:24:44,228 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 19:24:44,228 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 19:24:44,229 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 19:24:44,230 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 19:24:44,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 19:24:44,231 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 19:24:44,231 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 19:24:44,231 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 19:24:44,232 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 19:24:44,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 19:24:44,233 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 19:24:44,256 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 19:24:44,256 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 19:24:44,258 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 19:24:44,258 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 19:24:44,258 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 19:24:44,258 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 19:24:44,258 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 19:24:44,259 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 19:24:44,259 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 19:24:44,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 19:24:44,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 19:24:44,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 19:24:44,260 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 19:24:44,260 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 19:24:44,260 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 19:24:44,260 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 19:24:44,260 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 19:24:44,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 19:24:44,261 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 19:24:44,261 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 19:24:44,261 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 19:24:44,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 19:24:44,261 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 19:24:44,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 19:24:44,262 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 19:24:44,262 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 19:24:44,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 19:24:44,262 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 19:24:44,263 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 19:24:44,263 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 19:24:44,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 19:24:44,579 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 19:24:44,582 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 19:24:44,583 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 19:24:44,584 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 19:24:44,584 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-array-1.i [2020-10-15 19:24:44,649 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e65b29017/00d3055de9944e4098d08638f798ec92/FLAG88a44b978 [2020-10-15 19:24:45,162 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 19:24:45,163 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-array-1.i [2020-10-15 19:24:45,177 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e65b29017/00d3055de9944e4098d08638f798ec92/FLAG88a44b978 [2020-10-15 19:24:45,494 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e65b29017/00d3055de9944e4098d08638f798ec92 [2020-10-15 19:24:45,502 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 19:24:45,505 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 19:24:45,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 19:24:45,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 19:24:45,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 19:24:45,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:24:45" (1/1) ... [2020-10-15 19:24:45,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27ab893b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:45, skipping insertion in model container [2020-10-15 19:24:45,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:24:45" (1/1) ... [2020-10-15 19:24:45,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 19:24:45,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 19:24:46,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 19:24:46,045 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 19:24:46,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 19:24:46,160 INFO L208 MainTranslator]: Completed translation [2020-10-15 19:24:46,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:46 WrapperNode [2020-10-15 19:24:46,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 19:24:46,162 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 19:24:46,162 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 19:24:46,162 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 19:24:46,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:46" (1/1) ... [2020-10-15 19:24:46,188 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:46" (1/1) ... [2020-10-15 19:24:46,210 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 19:24:46,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 19:24:46,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 19:24:46,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 19:24:46,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:46" (1/1) ... [2020-10-15 19:24:46,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:46" (1/1) ... [2020-10-15 19:24:46,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:46" (1/1) ... [2020-10-15 19:24:46,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:46" (1/1) ... [2020-10-15 19:24:46,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:46" (1/1) ... [2020-10-15 19:24:46,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:46" (1/1) ... [2020-10-15 19:24:46,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:46" (1/1) ... [2020-10-15 19:24:46,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 19:24:46,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 19:24:46,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 19:24:46,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 19:24:46,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 19:24:46,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-15 19:24:46,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 19:24:46,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 19:24:46,315 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2020-10-15 19:24:46,315 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2020-10-15 19:24:46,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 19:24:46,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 19:24:46,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 19:24:46,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 19:24:46,317 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 19:24:46,661 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 19:24:46,662 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-15 19:24:46,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:24:46 BoogieIcfgContainer [2020-10-15 19:24:46,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 19:24:46,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 19:24:46,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 19:24:46,668 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 19:24:46,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:24:45" (1/3) ... [2020-10-15 19:24:46,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a7f455d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:24:46, skipping insertion in model container [2020-10-15 19:24:46,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:46" (2/3) ... [2020-10-15 19:24:46,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a7f455d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:24:46, skipping insertion in model container [2020-10-15 19:24:46,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:24:46" (3/3) ... [2020-10-15 19:24:46,672 INFO L111 eAbstractionObserver]: Analyzing ICFG nondet-array-1.i [2020-10-15 19:24:46,695 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 19:24:46,695 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 19:24:46,702 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 19:24:46,702 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 19:24:46,727 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:46,728 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:46,728 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:46,729 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:46,729 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:46,729 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:46,730 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:46,733 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:46,734 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:46,734 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:46,734 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:46,734 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:46,755 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-15 19:24:46,782 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 19:24:46,782 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 19:24:46,782 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 19:24:46,782 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 19:24:46,782 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 19:24:46,783 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 19:24:46,783 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 19:24:46,783 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 19:24:46,801 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 19:24:46,803 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 71 transitions, 150 flow [2020-10-15 19:24:46,806 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 71 transitions, 150 flow [2020-10-15 19:24:46,807 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 67 places, 71 transitions, 150 flow [2020-10-15 19:24:46,859 INFO L129 PetriNetUnfolder]: 12/103 cut-off events. [2020-10-15 19:24:46,860 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-15 19:24:46,864 INFO L80 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 103 events. 12/103 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 206 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2020-10-15 19:24:46,868 INFO L117 LiptonReduction]: Number of co-enabled transitions 370 [2020-10-15 19:24:48,220 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-10-15 19:24:48,467 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-15 19:24:48,647 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-10-15 19:24:48,745 INFO L132 LiptonReduction]: Checked pairs total: 397 [2020-10-15 19:24:48,746 INFO L134 LiptonReduction]: Total number of compositions: 71 [2020-10-15 19:24:48,755 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 14 transitions, 36 flow [2020-10-15 19:24:48,763 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 27 states. [2020-10-15 19:24:48,764 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-15 19:24:48,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-15 19:24:48,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:24:48,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-15 19:24:48,771 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:24:48,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:24:48,777 INFO L82 PathProgramCache]: Analyzing trace with hash 8680406, now seen corresponding path program 1 times [2020-10-15 19:24:48,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:24:48,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421915849] [2020-10-15 19:24:48,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:24:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:24:48,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:24:48,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421915849] [2020-10-15 19:24:48,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:24:48,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 19:24:48,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040949715] [2020-10-15 19:24:48,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 19:24:48,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:24:48,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 19:24:48,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:24:48,990 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2020-10-15 19:24:49,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:24:49,046 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-10-15 19:24:49,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 19:24:49,049 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-15 19:24:49,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:24:49,061 INFO L225 Difference]: With dead ends: 27 [2020-10-15 19:24:49,061 INFO L226 Difference]: Without dead ends: 23 [2020-10-15 19:24:49,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:24:49,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-15 19:24:49,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-15 19:24:49,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-15 19:24:49,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 32 transitions. [2020-10-15 19:24:49,105 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 32 transitions. Word has length 4 [2020-10-15 19:24:49,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:24:49,105 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 32 transitions. [2020-10-15 19:24:49,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 19:24:49,106 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2020-10-15 19:24:49,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-15 19:24:49,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:24:49,107 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-10-15 19:24:49,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 19:24:49,107 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:24:49,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:24:49,108 INFO L82 PathProgramCache]: Analyzing trace with hash -256835414, now seen corresponding path program 1 times [2020-10-15 19:24:49,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:24:49,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936481622] [2020-10-15 19:24:49,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:24:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:24:49,160 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:24:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:24:49,179 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:24:49,202 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 19:24:49,203 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 19:24:49,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 19:24:49,204 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-15 19:24:49,206 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 19:24:49,206 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-15 19:24:49,212 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,213 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,213 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,213 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,213 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,214 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,214 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,214 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,214 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,215 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,215 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,215 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,215 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,215 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,216 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,218 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,218 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,218 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,218 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,225 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,225 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,225 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,226 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,226 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:49,229 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-15 19:24:49,230 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 19:24:49,230 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 19:24:49,230 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 19:24:49,230 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 19:24:49,230 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 19:24:49,230 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 19:24:49,231 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 19:24:49,231 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 19:24:49,233 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 19:24:49,233 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 78 transitions, 174 flow [2020-10-15 19:24:49,234 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 78 transitions, 174 flow [2020-10-15 19:24:49,234 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 78 transitions, 174 flow [2020-10-15 19:24:49,269 INFO L129 PetriNetUnfolder]: 23/183 cut-off events. [2020-10-15 19:24:49,270 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-15 19:24:49,271 INFO L80 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 183 events. 23/183 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 456 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 105. Up to 8 conditions per place. [2020-10-15 19:24:49,274 INFO L117 LiptonReduction]: Number of co-enabled transitions 900 [2020-10-15 19:24:50,485 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-10-15 19:24:50,772 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-10-15 19:24:51,016 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 67 [2020-10-15 19:24:51,101 INFO L132 LiptonReduction]: Checked pairs total: 2415 [2020-10-15 19:24:51,102 INFO L134 LiptonReduction]: Total number of compositions: 67 [2020-10-15 19:24:51,102 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 23 transitions, 64 flow [2020-10-15 19:24:51,114 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 242 states. [2020-10-15 19:24:51,114 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2020-10-15 19:24:51,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-15 19:24:51,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:24:51,115 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-15 19:24:51,115 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:24:51,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:24:51,116 INFO L82 PathProgramCache]: Analyzing trace with hash 13452069, now seen corresponding path program 1 times [2020-10-15 19:24:51,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:24:51,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077200965] [2020-10-15 19:24:51,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:24:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:24:51,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:24:51,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077200965] [2020-10-15 19:24:51,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:24:51,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 19:24:51,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583028611] [2020-10-15 19:24:51,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 19:24:51,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:24:51,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 19:24:51,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:24:51,186 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 3 states. [2020-10-15 19:24:51,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:24:51,232 INFO L93 Difference]: Finished difference Result 242 states and 550 transitions. [2020-10-15 19:24:51,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 19:24:51,236 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-15 19:24:51,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:24:51,245 INFO L225 Difference]: With dead ends: 242 [2020-10-15 19:24:51,248 INFO L226 Difference]: Without dead ends: 216 [2020-10-15 19:24:51,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:24:51,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-15 19:24:51,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-10-15 19:24:51,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-15 19:24:51,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 494 transitions. [2020-10-15 19:24:51,302 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 494 transitions. Word has length 4 [2020-10-15 19:24:51,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:24:51,303 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 494 transitions. [2020-10-15 19:24:51,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 19:24:51,303 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 494 transitions. [2020-10-15 19:24:51,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 19:24:51,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:24:51,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:24:51,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 19:24:51,304 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:24:51,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:24:51,305 INFO L82 PathProgramCache]: Analyzing trace with hash 76722491, now seen corresponding path program 1 times [2020-10-15 19:24:51,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:24:51,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433092307] [2020-10-15 19:24:51,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:24:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:24:51,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 19:24:51,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433092307] [2020-10-15 19:24:51,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:24:51,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:24:51,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989339572] [2020-10-15 19:24:51,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 19:24:51,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:24:51,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 19:24:51,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 19:24:51,349 INFO L87 Difference]: Start difference. First operand 216 states and 494 transitions. Second operand 4 states. [2020-10-15 19:24:51,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:24:51,382 INFO L93 Difference]: Finished difference Result 203 states and 426 transitions. [2020-10-15 19:24:51,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 19:24:51,383 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-15 19:24:51,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:24:51,385 INFO L225 Difference]: With dead ends: 203 [2020-10-15 19:24:51,385 INFO L226 Difference]: Without dead ends: 203 [2020-10-15 19:24:51,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 19:24:51,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-15 19:24:51,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 197. [2020-10-15 19:24:51,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-15 19:24:51,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 420 transitions. [2020-10-15 19:24:51,401 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 420 transitions. Word has length 8 [2020-10-15 19:24:51,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:24:51,401 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 420 transitions. [2020-10-15 19:24:51,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 19:24:51,402 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 420 transitions. [2020-10-15 19:24:51,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 19:24:51,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:24:51,403 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2020-10-15 19:24:51,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 19:24:51,403 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:24:51,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:24:51,404 INFO L82 PathProgramCache]: Analyzing trace with hash 94633273, now seen corresponding path program 1 times [2020-10-15 19:24:51,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:24:51,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870091718] [2020-10-15 19:24:51,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:24:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:24:51,426 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:24:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:24:51,453 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:24:51,460 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 19:24:51,460 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 19:24:51,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 19:24:51,461 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-15 19:24:51,461 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 19:24:51,462 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-15 19:24:51,469 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,469 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,470 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,470 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,470 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,470 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,471 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,471 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,471 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,471 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,471 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,471 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,472 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,472 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,472 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,472 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,473 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,473 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,473 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,473 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,473 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,474 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,474 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,474 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,474 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,475 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,476 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,476 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,476 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,477 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,477 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,478 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,478 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,479 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,479 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,479 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:51,482 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-15 19:24:51,482 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 19:24:51,482 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 19:24:51,483 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 19:24:51,483 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 19:24:51,483 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 19:24:51,483 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 19:24:51,483 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 19:24:51,483 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 19:24:51,485 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 19:24:51,485 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 85 transitions, 200 flow [2020-10-15 19:24:51,485 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 85 transitions, 200 flow [2020-10-15 19:24:51,485 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 83 places, 85 transitions, 200 flow [2020-10-15 19:24:51,531 INFO L129 PetriNetUnfolder]: 45/330 cut-off events. [2020-10-15 19:24:51,531 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-10-15 19:24:51,532 INFO L80 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 330 events. 45/330 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1086 event pairs, 1 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 191. Up to 16 conditions per place. [2020-10-15 19:24:51,538 INFO L117 LiptonReduction]: Number of co-enabled transitions 1470 [2020-10-15 19:24:52,868 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-15 19:24:52,968 INFO L132 LiptonReduction]: Checked pairs total: 4432 [2020-10-15 19:24:52,969 INFO L134 LiptonReduction]: Total number of compositions: 73 [2020-10-15 19:24:52,970 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 28 transitions, 86 flow [2020-10-15 19:24:53,033 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1150 states. [2020-10-15 19:24:53,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states. [2020-10-15 19:24:53,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-15 19:24:53,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:24:53,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-15 19:24:53,035 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:24:53,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:24:53,036 INFO L82 PathProgramCache]: Analyzing trace with hash 18528206, now seen corresponding path program 1 times [2020-10-15 19:24:53,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:24:53,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647815899] [2020-10-15 19:24:53,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:24:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:24:53,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:24:53,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647815899] [2020-10-15 19:24:53,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:24:53,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 19:24:53,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567391466] [2020-10-15 19:24:53,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 19:24:53,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:24:53,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 19:24:53,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:24:53,093 INFO L87 Difference]: Start difference. First operand 1150 states. Second operand 3 states. [2020-10-15 19:24:53,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:24:53,134 INFO L93 Difference]: Finished difference Result 1150 states and 3360 transitions. [2020-10-15 19:24:53,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 19:24:53,135 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-15 19:24:53,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:24:53,152 INFO L225 Difference]: With dead ends: 1150 [2020-10-15 19:24:53,152 INFO L226 Difference]: Without dead ends: 1024 [2020-10-15 19:24:53,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:24:53,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-10-15 19:24:53,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1024. [2020-10-15 19:24:53,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-10-15 19:24:53,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 3009 transitions. [2020-10-15 19:24:53,231 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 3009 transitions. Word has length 4 [2020-10-15 19:24:53,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:24:53,232 INFO L481 AbstractCegarLoop]: Abstraction has 1024 states and 3009 transitions. [2020-10-15 19:24:53,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 19:24:53,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 3009 transitions. [2020-10-15 19:24:53,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 19:24:53,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:24:53,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:24:53,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 19:24:53,233 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:24:53,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:24:53,234 INFO L82 PathProgramCache]: Analyzing trace with hash 949696130, now seen corresponding path program 1 times [2020-10-15 19:24:53,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:24:53,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441391785] [2020-10-15 19:24:53,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:24:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:24:53,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 19:24:53,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441391785] [2020-10-15 19:24:53,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:24:53,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:24:53,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251990989] [2020-10-15 19:24:53,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 19:24:53,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:24:53,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 19:24:53,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 19:24:53,270 INFO L87 Difference]: Start difference. First operand 1024 states and 3009 transitions. Second operand 4 states. [2020-10-15 19:24:53,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:24:53,312 INFO L93 Difference]: Finished difference Result 1015 states and 2784 transitions. [2020-10-15 19:24:53,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 19:24:53,313 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-15 19:24:53,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:24:53,321 INFO L225 Difference]: With dead ends: 1015 [2020-10-15 19:24:53,321 INFO L226 Difference]: Without dead ends: 1015 [2020-10-15 19:24:53,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 19:24:53,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-10-15 19:24:53,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 977. [2020-10-15 19:24:53,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 977 states. [2020-10-15 19:24:53,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 2718 transitions. [2020-10-15 19:24:53,357 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 2718 transitions. Word has length 8 [2020-10-15 19:24:53,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:24:53,357 INFO L481 AbstractCegarLoop]: Abstraction has 977 states and 2718 transitions. [2020-10-15 19:24:53,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 19:24:53,357 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 2718 transitions. [2020-10-15 19:24:53,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 19:24:53,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:24:53,360 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2020-10-15 19:24:53,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 19:24:53,360 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:24:53,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:24:53,361 INFO L82 PathProgramCache]: Analyzing trace with hash -515475845, now seen corresponding path program 1 times [2020-10-15 19:24:53,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:24:53,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671054222] [2020-10-15 19:24:53,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:24:53,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:24:53,389 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:24:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:24:53,410 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:24:53,416 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 19:24:53,416 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 19:24:53,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 19:24:53,416 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-15 19:24:53,417 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 19:24:53,418 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-15 19:24:53,426 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,426 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,426 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,427 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,427 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,427 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,427 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,427 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,428 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,428 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,428 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,428 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,428 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,428 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,429 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,429 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,429 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,429 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,429 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,429 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,430 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,430 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,430 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,430 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,430 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,431 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,431 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,431 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,431 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,432 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,432 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,432 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,432 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,434 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,434 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,434 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,434 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,434 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,436 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,436 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,436 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,436 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,436 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,437 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,438 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,438 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,438 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,438 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:53,442 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-15 19:24:53,442 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 19:24:53,443 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 19:24:53,443 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 19:24:53,443 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 19:24:53,443 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 19:24:53,443 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 19:24:53,443 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 19:24:53,443 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 19:24:53,445 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 19:24:53,445 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 92 transitions, 228 flow [2020-10-15 19:24:53,445 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 92 transitions, 228 flow [2020-10-15 19:24:53,445 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 92 transitions, 228 flow [2020-10-15 19:24:53,519 INFO L129 PetriNetUnfolder]: 91/613 cut-off events. [2020-10-15 19:24:53,520 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2020-10-15 19:24:53,522 INFO L80 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 613 events. 91/613 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2732 event pairs, 6 based on Foata normal form. 0/506 useless extension candidates. Maximal degree in co-relation 350. Up to 32 conditions per place. [2020-10-15 19:24:53,533 INFO L117 LiptonReduction]: Number of co-enabled transitions 2120 [2020-10-15 19:24:54,999 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-15 19:24:55,098 INFO L132 LiptonReduction]: Checked pairs total: 7163 [2020-10-15 19:24:55,098 INFO L134 LiptonReduction]: Total number of compositions: 73 [2020-10-15 19:24:55,099 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 33 transitions, 110 flow [2020-10-15 19:24:55,428 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5482 states. [2020-10-15 19:24:55,428 INFO L276 IsEmpty]: Start isEmpty. Operand 5482 states. [2020-10-15 19:24:55,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-15 19:24:55,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:24:55,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-15 19:24:55,429 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:24:55,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:24:55,429 INFO L82 PathProgramCache]: Analyzing trace with hash 23824947, now seen corresponding path program 1 times [2020-10-15 19:24:55,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:24:55,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918412532] [2020-10-15 19:24:55,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:24:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:24:55,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:24:55,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918412532] [2020-10-15 19:24:55,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:24:55,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 19:24:55,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369539349] [2020-10-15 19:24:55,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 19:24:55,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:24:55,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 19:24:55,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:24:55,457 INFO L87 Difference]: Start difference. First operand 5482 states. Second operand 3 states. [2020-10-15 19:24:55,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:24:55,535 INFO L93 Difference]: Finished difference Result 5482 states and 19554 transitions. [2020-10-15 19:24:55,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 19:24:55,536 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-15 19:24:55,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:24:55,582 INFO L225 Difference]: With dead ends: 5482 [2020-10-15 19:24:55,582 INFO L226 Difference]: Without dead ends: 4856 [2020-10-15 19:24:55,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:24:55,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2020-10-15 19:24:55,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2020-10-15 19:24:55,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2020-10-15 19:24:55,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 17428 transitions. [2020-10-15 19:24:55,762 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 17428 transitions. Word has length 4 [2020-10-15 19:24:55,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:24:55,762 INFO L481 AbstractCegarLoop]: Abstraction has 4856 states and 17428 transitions. [2020-10-15 19:24:55,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 19:24:55,762 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 17428 transitions. [2020-10-15 19:24:55,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 19:24:55,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:24:55,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:24:55,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 19:24:55,763 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:24:55,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:24:55,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1205655351, now seen corresponding path program 1 times [2020-10-15 19:24:55,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:24:55,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100939742] [2020-10-15 19:24:55,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:24:55,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:24:55,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 19:24:55,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100939742] [2020-10-15 19:24:55,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:24:55,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:24:55,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284315027] [2020-10-15 19:24:55,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 19:24:55,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:24:55,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 19:24:55,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 19:24:55,792 INFO L87 Difference]: Start difference. First operand 4856 states and 17428 transitions. Second operand 4 states. [2020-10-15 19:24:55,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:24:55,848 INFO L93 Difference]: Finished difference Result 4995 states and 16978 transitions. [2020-10-15 19:24:55,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 19:24:55,849 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-15 19:24:55,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:24:55,888 INFO L225 Difference]: With dead ends: 4995 [2020-10-15 19:24:55,888 INFO L226 Difference]: Without dead ends: 4995 [2020-10-15 19:24:55,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 19:24:55,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4995 states. [2020-10-15 19:24:56,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4995 to 4797. [2020-10-15 19:24:56,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4797 states. [2020-10-15 19:24:56,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4797 states to 4797 states and 16480 transitions. [2020-10-15 19:24:56,052 INFO L78 Accepts]: Start accepts. Automaton has 4797 states and 16480 transitions. Word has length 8 [2020-10-15 19:24:56,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:24:56,053 INFO L481 AbstractCegarLoop]: Abstraction has 4797 states and 16480 transitions. [2020-10-15 19:24:56,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 19:24:56,053 INFO L276 IsEmpty]: Start isEmpty. Operand 4797 states and 16480 transitions. [2020-10-15 19:24:56,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-15 19:24:56,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:24:56,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:24:56,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 19:24:56,055 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:24:56,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:24:56,055 INFO L82 PathProgramCache]: Analyzing trace with hash 172994846, now seen corresponding path program 1 times [2020-10-15 19:24:56,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:24:56,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517500033] [2020-10-15 19:24:56,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:24:56,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:24:56,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:24:56,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517500033] [2020-10-15 19:24:56,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254103521] [2020-10-15 19:24:56,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:24:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:24:56,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-15 19:24:56,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:24:56,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:24:56,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:24:56,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-10-15 19:24:56,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244166675] [2020-10-15 19:24:56,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 19:24:56,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:24:56,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 19:24:56,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-15 19:24:56,194 INFO L87 Difference]: Start difference. First operand 4797 states and 16480 transitions. Second operand 6 states. [2020-10-15 19:24:56,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:24:56,245 INFO L93 Difference]: Finished difference Result 4793 states and 16469 transitions. [2020-10-15 19:24:56,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 19:24:56,245 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-15 19:24:56,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:24:56,274 INFO L225 Difference]: With dead ends: 4793 [2020-10-15 19:24:56,274 INFO L226 Difference]: Without dead ends: 4793 [2020-10-15 19:24:56,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-15 19:24:56,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4793 states. [2020-10-15 19:24:56,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4793 to 4793. [2020-10-15 19:24:56,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4793 states. [2020-10-15 19:24:56,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4793 states to 4793 states and 16469 transitions. [2020-10-15 19:24:56,488 INFO L78 Accepts]: Start accepts. Automaton has 4793 states and 16469 transitions. Word has length 16 [2020-10-15 19:24:56,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:24:56,488 INFO L481 AbstractCegarLoop]: Abstraction has 4793 states and 16469 transitions. [2020-10-15 19:24:56,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 19:24:56,488 INFO L276 IsEmpty]: Start isEmpty. Operand 4793 states and 16469 transitions. [2020-10-15 19:24:56,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 19:24:56,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:24:56,491 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2020-10-15 19:24:56,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-15 19:24:56,705 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:24:56,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:24:56,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1534304145, now seen corresponding path program 1 times [2020-10-15 19:24:56,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:24:56,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74684961] [2020-10-15 19:24:56,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:24:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:24:56,718 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:24:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:24:56,727 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:24:56,734 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 19:24:56,734 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 19:24:56,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 19:24:56,735 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-15 19:24:56,735 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 19:24:56,736 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-15 19:24:56,743 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,744 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,744 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,744 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,744 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,744 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,744 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,745 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,745 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,745 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,745 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,745 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,746 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,746 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,746 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,746 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,746 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,746 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,747 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,747 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,747 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,747 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,747 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,747 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,748 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,748 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,748 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,748 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,748 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,748 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,749 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,749 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,749 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,749 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,749 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,750 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,750 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,750 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,750 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,750 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,751 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,752 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,752 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,752 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,752 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,753 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,754 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,754 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,754 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,754 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,755 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,755 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,755 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,756 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,756 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,757 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,757 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,757 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,757 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,758 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:24:56,762 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-15 19:24:56,762 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 19:24:56,762 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 19:24:56,762 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 19:24:56,762 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 19:24:56,762 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 19:24:56,763 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 19:24:56,763 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 19:24:56,763 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 19:24:56,764 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 19:24:56,764 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 99 transitions, 258 flow [2020-10-15 19:24:56,764 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 99 transitions, 258 flow [2020-10-15 19:24:56,764 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 99 transitions, 258 flow [2020-10-15 19:24:56,879 INFO L129 PetriNetUnfolder]: 189/1172 cut-off events. [2020-10-15 19:24:56,880 INFO L130 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2020-10-15 19:24:56,884 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1283 conditions, 1172 events. 189/1172 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6706 event pairs, 23 based on Foata normal form. 0/967 useless extension candidates. Maximal degree in co-relation 658. Up to 80 conditions per place. [2020-10-15 19:24:56,908 INFO L117 LiptonReduction]: Number of co-enabled transitions 2850 [2020-10-15 19:24:58,227 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-15 19:24:58,702 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-10-15 19:24:58,800 INFO L132 LiptonReduction]: Checked pairs total: 9531 [2020-10-15 19:24:58,801 INFO L134 LiptonReduction]: Total number of compositions: 75 [2020-10-15 19:24:58,801 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 38 transitions, 136 flow [2020-10-15 19:25:00,819 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26310 states. [2020-10-15 19:25:00,820 INFO L276 IsEmpty]: Start isEmpty. Operand 26310 states. [2020-10-15 19:25:00,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-15 19:25:00,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:25:00,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-15 19:25:00,820 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:25:00,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:25:00,820 INFO L82 PathProgramCache]: Analyzing trace with hash 29336307, now seen corresponding path program 1 times [2020-10-15 19:25:00,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:25:00,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046046573] [2020-10-15 19:25:00,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:25:00,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:25:00,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:25:00,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046046573] [2020-10-15 19:25:00,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:25:00,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 19:25:00,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374252315] [2020-10-15 19:25:00,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 19:25:00,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:25:00,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 19:25:00,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:25:00,846 INFO L87 Difference]: Start difference. First operand 26310 states. Second operand 3 states. [2020-10-15 19:25:01,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:25:01,009 INFO L93 Difference]: Finished difference Result 26310 states and 110676 transitions. [2020-10-15 19:25:01,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 19:25:01,010 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-15 19:25:01,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:25:02,073 INFO L225 Difference]: With dead ends: 26310 [2020-10-15 19:25:02,073 INFO L226 Difference]: Without dead ends: 23184 [2020-10-15 19:25:02,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:25:02,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23184 states. [2020-10-15 19:25:02,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23184 to 23184. [2020-10-15 19:25:02,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23184 states. [2020-10-15 19:25:03,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23184 states to 23184 states and 98175 transitions. [2020-10-15 19:25:03,104 INFO L78 Accepts]: Start accepts. Automaton has 23184 states and 98175 transitions. Word has length 4 [2020-10-15 19:25:03,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:25:03,105 INFO L481 AbstractCegarLoop]: Abstraction has 23184 states and 98175 transitions. [2020-10-15 19:25:03,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 19:25:03,105 INFO L276 IsEmpty]: Start isEmpty. Operand 23184 states and 98175 transitions. [2020-10-15 19:25:03,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 19:25:03,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:25:03,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:25:03,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 19:25:03,106 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:25:03,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:25:03,106 INFO L82 PathProgramCache]: Analyzing trace with hash 805936127, now seen corresponding path program 1 times [2020-10-15 19:25:03,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:25:03,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506914859] [2020-10-15 19:25:03,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:25:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:25:03,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 19:25:03,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506914859] [2020-10-15 19:25:03,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:25:03,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:25:03,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824653311] [2020-10-15 19:25:03,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 19:25:03,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:25:03,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 19:25:03,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 19:25:03,142 INFO L87 Difference]: Start difference. First operand 23184 states and 98175 transitions. Second operand 4 states. [2020-10-15 19:25:03,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:25:03,284 INFO L93 Difference]: Finished difference Result 24543 states and 99524 transitions. [2020-10-15 19:25:03,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 19:25:03,285 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-15 19:25:03,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:25:03,383 INFO L225 Difference]: With dead ends: 24543 [2020-10-15 19:25:03,383 INFO L226 Difference]: Without dead ends: 24543 [2020-10-15 19:25:03,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 19:25:03,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24543 states. [2020-10-15 19:25:04,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24543 to 23577. [2020-10-15 19:25:04,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23577 states. [2020-10-15 19:25:04,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23577 states to 23577 states and 96338 transitions. [2020-10-15 19:25:04,341 INFO L78 Accepts]: Start accepts. Automaton has 23577 states and 96338 transitions. Word has length 8 [2020-10-15 19:25:04,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:25:04,341 INFO L481 AbstractCegarLoop]: Abstraction has 23577 states and 96338 transitions. [2020-10-15 19:25:04,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 19:25:04,342 INFO L276 IsEmpty]: Start isEmpty. Operand 23577 states and 96338 transitions. [2020-10-15 19:25:04,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-15 19:25:04,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:25:04,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:25:04,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 19:25:04,344 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:25:04,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:25:04,345 INFO L82 PathProgramCache]: Analyzing trace with hash -447719219, now seen corresponding path program 1 times [2020-10-15 19:25:04,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:25:04,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886396120] [2020-10-15 19:25:04,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:25:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:25:04,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:25:04,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886396120] [2020-10-15 19:25:04,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65575349] [2020-10-15 19:25:04,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:25:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:25:04,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-15 19:25:04,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:25:04,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:25:04,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:25:04,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2020-10-15 19:25:04,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284271034] [2020-10-15 19:25:04,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 19:25:04,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:25:04,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 19:25:04,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:25:04,821 INFO L87 Difference]: Start difference. First operand 23577 states and 96338 transitions. Second operand 7 states. [2020-10-15 19:25:04,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:25:04,973 INFO L93 Difference]: Finished difference Result 22356 states and 87745 transitions. [2020-10-15 19:25:04,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 19:25:04,973 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-10-15 19:25:04,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:25:05,044 INFO L225 Difference]: With dead ends: 22356 [2020-10-15 19:25:05,045 INFO L226 Difference]: Without dead ends: 22356 [2020-10-15 19:25:05,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:25:05,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22356 states. [2020-10-15 19:25:05,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22356 to 21826. [2020-10-15 19:25:05,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21826 states. [2020-10-15 19:25:05,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21826 states to 21826 states and 86349 transitions. [2020-10-15 19:25:05,804 INFO L78 Accepts]: Start accepts. Automaton has 21826 states and 86349 transitions. Word has length 16 [2020-10-15 19:25:05,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:25:05,804 INFO L481 AbstractCegarLoop]: Abstraction has 21826 states and 86349 transitions. [2020-10-15 19:25:05,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 19:25:05,805 INFO L276 IsEmpty]: Start isEmpty. Operand 21826 states and 86349 transitions. [2020-10-15 19:25:05,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 19:25:05,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:25:05,812 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:25:06,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-15 19:25:06,026 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:25:06,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:25:06,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1012463302, now seen corresponding path program 1 times [2020-10-15 19:25:06,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:25:06,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020430253] [2020-10-15 19:25:06,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:25:06,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:25:06,043 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:25:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:25:06,062 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:25:06,069 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 19:25:06,070 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 19:25:06,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 19:25:06,070 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-15 19:25:06,071 WARN L371 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 19:25:06,071 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-15 19:25:06,369 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,369 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,370 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,370 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,370 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,370 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,370 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,370 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,370 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,371 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,371 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,371 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,371 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,371 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,371 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,371 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,372 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,372 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,372 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,372 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,372 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,372 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,372 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,372 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,373 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,373 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,373 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,373 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,373 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,373 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,373 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,374 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,374 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,374 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,374 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,374 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,374 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,374 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,374 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,375 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,375 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,375 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,375 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,375 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,376 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,376 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,376 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,377 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,377 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,377 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,378 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,378 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,379 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,379 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,379 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,379 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,379 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,380 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,380 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,380 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,381 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,381 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,382 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,382 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,382 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,382 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,382 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,383 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,384 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,384 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,384 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,384 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:25:06,389 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-15 19:25:06,390 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 19:25:06,390 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 19:25:06,390 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 19:25:06,390 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 19:25:06,390 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 19:25:06,390 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 19:25:06,391 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 19:25:06,391 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 19:25:06,392 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 19:25:06,392 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 106 transitions, 290 flow [2020-10-15 19:25:06,392 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 106 transitions, 290 flow [2020-10-15 19:25:06,392 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 107 places, 106 transitions, 290 flow [2020-10-15 19:25:06,687 INFO L129 PetriNetUnfolder]: 399/2291 cut-off events. [2020-10-15 19:25:06,687 INFO L130 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2020-10-15 19:25:06,699 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2523 conditions, 2291 events. 399/2291 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 16164 event pairs, 72 based on Foata normal form. 0/1892 useless extension candidates. Maximal degree in co-relation 1271. Up to 192 conditions per place. [2020-10-15 19:25:06,743 INFO L117 LiptonReduction]: Number of co-enabled transitions 3660 [2020-10-15 19:25:08,275 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-15 19:25:08,371 INFO L132 LiptonReduction]: Checked pairs total: 14446 [2020-10-15 19:25:08,371 INFO L134 LiptonReduction]: Total number of compositions: 76 [2020-10-15 19:25:08,371 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 43 transitions, 164 flow [2020-10-15 19:25:43,085 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 127122 states. [2020-10-15 19:25:43,085 INFO L276 IsEmpty]: Start isEmpty. Operand 127122 states. [2020-10-15 19:25:43,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-15 19:25:43,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:25:43,086 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-15 19:25:43,086 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:25:43,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:25:43,086 INFO L82 PathProgramCache]: Analyzing trace with hash 35155697, now seen corresponding path program 1 times [2020-10-15 19:25:43,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:25:43,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496008793] [2020-10-15 19:25:43,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:25:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:25:43,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:25:43,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496008793] [2020-10-15 19:25:43,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:25:43,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 19:25:43,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659948789] [2020-10-15 19:25:43,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 19:25:43,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:25:43,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 19:25:43,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:25:43,107 INFO L87 Difference]: Start difference. First operand 127122 states. Second operand 3 states. [2020-10-15 19:25:43,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:25:43,782 INFO L93 Difference]: Finished difference Result 127122 states and 615398 transitions. [2020-10-15 19:25:43,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 19:25:43,782 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-15 19:25:43,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:25:44,165 INFO L225 Difference]: With dead ends: 127122 [2020-10-15 19:25:44,166 INFO L226 Difference]: Without dead ends: 111496 [2020-10-15 19:25:44,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:25:51,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111496 states. [2020-10-15 19:25:53,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111496 to 111496. [2020-10-15 19:25:53,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111496 states. [2020-10-15 19:25:53,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111496 states to 111496 states and 543522 transitions. [2020-10-15 19:25:53,676 INFO L78 Accepts]: Start accepts. Automaton has 111496 states and 543522 transitions. Word has length 4 [2020-10-15 19:25:53,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:25:53,681 INFO L481 AbstractCegarLoop]: Abstraction has 111496 states and 543522 transitions. [2020-10-15 19:25:53,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 19:25:53,681 INFO L276 IsEmpty]: Start isEmpty. Operand 111496 states and 543522 transitions. [2020-10-15 19:25:53,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 19:25:53,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:25:53,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:25:53,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 19:25:53,682 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:25:53,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:25:53,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1170285684, now seen corresponding path program 1 times [2020-10-15 19:25:53,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:25:53,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216236259] [2020-10-15 19:25:53,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:25:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:25:53,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 19:25:53,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216236259] [2020-10-15 19:25:53,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:25:53,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:25:53,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705318016] [2020-10-15 19:25:53,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 19:25:53,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:25:53,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 19:25:53,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 19:25:53,719 INFO L87 Difference]: Start difference. First operand 111496 states and 543522 transitions. Second operand 4 states. [2020-10-15 19:25:54,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:25:54,429 INFO L93 Difference]: Finished difference Result 120747 states and 568406 transitions. [2020-10-15 19:25:54,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 19:25:54,429 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-15 19:25:54,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:25:54,821 INFO L225 Difference]: With dead ends: 120747 [2020-10-15 19:25:54,821 INFO L226 Difference]: Without dead ends: 120747 [2020-10-15 19:25:54,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 19:26:03,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120747 states. [2020-10-15 19:26:05,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120747 to 116197. [2020-10-15 19:26:05,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116197 states. [2020-10-15 19:26:05,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116197 states to 116197 states and 549860 transitions. [2020-10-15 19:26:05,912 INFO L78 Accepts]: Start accepts. Automaton has 116197 states and 549860 transitions. Word has length 8 [2020-10-15 19:26:05,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:05,912 INFO L481 AbstractCegarLoop]: Abstraction has 116197 states and 549860 transitions. [2020-10-15 19:26:05,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 19:26:05,913 INFO L276 IsEmpty]: Start isEmpty. Operand 116197 states and 549860 transitions. [2020-10-15 19:26:05,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-15 19:26:05,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:05,914 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:05,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 19:26:05,914 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:05,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:05,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1082449829, now seen corresponding path program 1 times [2020-10-15 19:26:05,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:05,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978669042] [2020-10-15 19:26:05,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:05,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:26:05,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978669042] [2020-10-15 19:26:05,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104963763] [2020-10-15 19:26:05,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:26:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:06,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-15 19:26:06,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:26:06,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:26:06,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:26:06,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-10-15 19:26:06,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137069130] [2020-10-15 19:26:06,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 19:26:06,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:06,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 19:26:06,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-15 19:26:06,054 INFO L87 Difference]: Start difference. First operand 116197 states and 549860 transitions. Second operand 6 states. [2020-10-15 19:26:06,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:06,731 INFO L93 Difference]: Finished difference Result 116193 states and 549849 transitions. [2020-10-15 19:26:06,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 19:26:06,731 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-15 19:26:06,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:07,120 INFO L225 Difference]: With dead ends: 116193 [2020-10-15 19:26:07,121 INFO L226 Difference]: Without dead ends: 116193 [2020-10-15 19:26:07,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-15 19:26:15,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116193 states. [2020-10-15 19:26:17,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116193 to 116193. [2020-10-15 19:26:17,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116193 states. [2020-10-15 19:26:17,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116193 states to 116193 states and 549849 transitions. [2020-10-15 19:26:17,534 INFO L78 Accepts]: Start accepts. Automaton has 116193 states and 549849 transitions. Word has length 16 [2020-10-15 19:26:17,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:17,534 INFO L481 AbstractCegarLoop]: Abstraction has 116193 states and 549849 transitions. [2020-10-15 19:26:17,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 19:26:17,534 INFO L276 IsEmpty]: Start isEmpty. Operand 116193 states and 549849 transitions. [2020-10-15 19:26:17,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-15 19:26:17,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:17,536 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forcibly destroying the process [2020-10-15 19:26:18,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:26:18,594 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:18,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:18,594 INFO L82 PathProgramCache]: Analyzing trace with hash 173719339, now seen corresponding path program 1 times [2020-10-15 19:26:18,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:18,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116572740] [2020-10-15 19:26:18,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:18,651 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:26:18,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116572740] [2020-10-15 19:26:18,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362461276] [2020-10-15 19:26:18,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:26:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:18,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-15 19:26:18,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:26:18,772 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:26:18,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:26:18,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-15 19:26:18,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646418960] [2020-10-15 19:26:18,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 19:26:18,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:18,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 19:26:18,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-10-15 19:26:18,774 INFO L87 Difference]: Start difference. First operand 116193 states and 549849 transitions. Second operand 8 states. [2020-10-15 19:26:19,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:19,475 INFO L93 Difference]: Finished difference Result 116177 states and 549793 transitions. [2020-10-15 19:26:19,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 19:26:19,475 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-10-15 19:26:19,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:19,859 INFO L225 Difference]: With dead ends: 116177 [2020-10-15 19:26:19,859 INFO L226 Difference]: Without dead ends: 116177 [2020-10-15 19:26:19,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-10-15 19:26:22,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116177 states. [2020-10-15 19:26:25,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116177 to 116177. [2020-10-15 19:26:25,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116177 states. [2020-10-15 19:26:25,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116177 states to 116177 states and 549793 transitions. [2020-10-15 19:26:25,511 INFO L78 Accepts]: Start accepts. Automaton has 116177 states and 549793 transitions. Word has length 20 [2020-10-15 19:26:25,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:25,511 INFO L481 AbstractCegarLoop]: Abstraction has 116177 states and 549793 transitions. [2020-10-15 19:26:25,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 19:26:25,511 INFO L276 IsEmpty]: Start isEmpty. Operand 116177 states and 549793 transitions. [2020-10-15 19:26:25,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-15 19:26:25,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:25,517 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:25,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:26:25,732 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:25,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:25,732 INFO L82 PathProgramCache]: Analyzing trace with hash -999416206, now seen corresponding path program 1 times [2020-10-15 19:26:25,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:25,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912491756] [2020-10-15 19:26:25,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:25,792 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:26:25,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912491756] [2020-10-15 19:26:25,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656882054] [2020-10-15 19:26:25,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:26:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:25,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-15 19:26:25,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:26:25,930 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:26:25,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:26:25,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-15 19:26:25,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735417206] [2020-10-15 19:26:25,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 19:26:25,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:25,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 19:26:25,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2020-10-15 19:26:25,934 INFO L87 Difference]: Start difference. First operand 116177 states and 549793 transitions. Second operand 10 states. [2020-10-15 19:26:26,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:26,737 INFO L93 Difference]: Finished difference Result 116113 states and 549521 transitions. [2020-10-15 19:26:26,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 19:26:26,738 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-10-15 19:26:26,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:27,116 INFO L225 Difference]: With dead ends: 116113 [2020-10-15 19:26:27,116 INFO L226 Difference]: Without dead ends: 116113 [2020-10-15 19:26:27,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2020-10-15 19:26:36,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116113 states. [2020-10-15 19:26:37,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116113 to 116113. [2020-10-15 19:26:37,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116113 states. [2020-10-15 19:26:38,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116113 states to 116113 states and 549521 transitions. [2020-10-15 19:26:38,068 INFO L78 Accepts]: Start accepts. Automaton has 116113 states and 549521 transitions. Word has length 24 [2020-10-15 19:26:38,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:38,069 INFO L481 AbstractCegarLoop]: Abstraction has 116113 states and 549521 transitions. [2020-10-15 19:26:38,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 19:26:38,069 INFO L276 IsEmpty]: Start isEmpty. Operand 116113 states and 549521 transitions. [2020-10-15 19:26:38,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 19:26:38,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:38,084 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:38,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-15 19:26:38,293 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:38,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:38,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1963695170, now seen corresponding path program 1 times [2020-10-15 19:26:38,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:38,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561678197] [2020-10-15 19:26:38,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:26:38,308 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:26:38,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:26:38,317 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:26:38,326 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 19:26:38,326 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 19:26:38,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 19:26:38,326 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-15 19:26:38,327 WARN L371 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 19:26:38,327 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2020-10-15 19:26:38,336 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,337 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,337 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,337 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,337 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,337 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,338 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,338 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,338 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,338 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,338 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,338 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,338 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,339 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,339 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,339 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,339 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,339 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,339 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,339 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,340 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,340 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,340 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,340 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,340 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,340 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,341 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,341 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,341 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,341 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,341 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,341 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,342 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,342 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,342 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,342 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,342 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,342 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,342 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,343 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,343 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,343 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,343 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,343 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,343 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,344 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,344 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,344 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,344 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,345 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,345 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,345 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,345 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,346 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,347 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,347 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,347 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,347 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,347 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,354 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,354 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,355 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,355 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,355 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,356 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,356 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,356 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,356 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,356 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,357 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,358 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,358 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,358 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,358 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,359 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,359 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,360 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,360 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,360 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,361 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,361 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,361 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,362 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,362 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:38,367 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-15 19:26:38,368 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 19:26:38,368 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 19:26:38,368 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 19:26:38,368 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 19:26:38,368 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 19:26:38,368 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 19:26:38,368 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 19:26:38,368 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 19:26:38,370 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 19:26:38,370 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 113 transitions, 324 flow [2020-10-15 19:26:38,371 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 113 transitions, 324 flow [2020-10-15 19:26:38,371 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 115 places, 113 transitions, 324 flow [2020-10-15 19:26:39,965 INFO L129 PetriNetUnfolder]: 849/4546 cut-off events. [2020-10-15 19:26:39,965 INFO L130 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2020-10-15 19:26:39,991 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5044 conditions, 4546 events. 849/4546 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 38350 event pairs, 201 based on Foata normal form. 0/3761 useless extension candidates. Maximal degree in co-relation 2509. Up to 448 conditions per place. [2020-10-15 19:26:40,093 INFO L117 LiptonReduction]: Number of co-enabled transitions 4550 [2020-10-15 19:26:42,241 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-15 19:26:42,336 INFO L132 LiptonReduction]: Checked pairs total: 19547 [2020-10-15 19:26:42,336 INFO L134 LiptonReduction]: Total number of compositions: 80 [2020-10-15 19:26:42,336 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 48 transitions, 194 flow Received shutdown request... [2020-10-15 19:38:17,781 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-15 19:38:17,783 WARN L235 ceAbstractionStarter]: Timeout [2020-10-15 19:38:17,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:38:17 BasicIcfg [2020-10-15 19:38:17,784 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 19:38:17,785 INFO L168 Benchmark]: Toolchain (without parser) took 812281.80 ms. Allocated memory was 249.6 MB in the beginning and 5.9 GB in the end (delta: 5.7 GB). Free memory was 204.0 MB in the beginning and 3.4 GB in the end (delta: -3.2 GB). Peak memory consumption was 6.1 GB. Max. memory is 14.2 GB. [2020-10-15 19:38:17,785 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 249.6 MB. Free memory is still 225.9 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 19:38:17,786 INFO L168 Benchmark]: CACSL2BoogieTranslator took 654.79 ms. Allocated memory was 249.6 MB in the beginning and 309.3 MB in the end (delta: 59.8 MB). Free memory was 204.0 MB in the beginning and 262.6 MB in the end (delta: -58.6 MB). Peak memory consumption was 27.0 MB. Max. memory is 14.2 GB. [2020-10-15 19:38:17,787 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.74 ms. Allocated memory is still 309.3 MB. Free memory was 262.6 MB in the beginning and 260.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 19:38:17,787 INFO L168 Benchmark]: Boogie Preprocessor took 28.88 ms. Allocated memory is still 309.3 MB. Free memory was 260.1 MB in the beginning and 257.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 19:38:17,788 INFO L168 Benchmark]: RCFGBuilder took 423.65 ms. Allocated memory is still 309.3 MB. Free memory was 257.6 MB in the beginning and 235.7 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. [2020-10-15 19:38:17,788 INFO L168 Benchmark]: TraceAbstraction took 811118.59 ms. Allocated memory was 309.3 MB in the beginning and 5.9 GB in the end (delta: 5.6 GB). Free memory was 233.2 MB in the beginning and 3.4 GB in the end (delta: -3.2 GB). Peak memory consumption was 6.1 GB. Max. memory is 14.2 GB. [2020-10-15 19:38:17,791 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 249.6 MB. Free memory is still 225.9 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 654.79 ms. Allocated memory was 249.6 MB in the beginning and 309.3 MB in the end (delta: 59.8 MB). Free memory was 204.0 MB in the beginning and 262.6 MB in the end (delta: -58.6 MB). Peak memory consumption was 27.0 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 48.74 ms. Allocated memory is still 309.3 MB. Free memory was 262.6 MB in the beginning and 260.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.88 ms. Allocated memory is still 309.3 MB. Free memory was 260.1 MB in the beginning and 257.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 423.65 ms. Allocated memory is still 309.3 MB. Free memory was 257.6 MB in the beginning and 235.7 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 811118.59 ms. Allocated memory was 309.3 MB in the beginning and 5.9 GB in the end (delta: 5.6 GB). Free memory was 233.2 MB in the beginning and 3.4 GB in the end (delta: -3.2 GB). Peak memory consumption was 6.1 GB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 263 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 11 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 7 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 67 PlacesBefore, 15 PlacesAfterwards, 71 TransitionsBefore, 14 TransitionsAfterwards, 370 CoEnabledTransitionPairs, 6 FixpointIterations, 24 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 71 TotalNumberOfCompositions, 397 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 689 VarBasedMoverChecksPositive, 27 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 25 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 127 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 75 PlacesBefore, 25 PlacesAfterwards, 78 TransitionsBefore, 23 TransitionsAfterwards, 900 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 5 ChoiceCompositions, 67 TotalNumberOfCompositions, 2415 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1100 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 37 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 181 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 83 PlacesBefore, 31 PlacesAfterwards, 85 TransitionsBefore, 28 TransitionsAfterwards, 1470 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 5 ChoiceCompositions, 73 TotalNumberOfCompositions, 4432 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1301 VarBasedMoverChecksPositive, 53 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 41 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 230 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 91 PlacesBefore, 37 PlacesAfterwards, 92 TransitionsBefore, 33 TransitionsAfterwards, 2120 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 12 ConcurrentYvCompositions, 5 ChoiceCompositions, 73 TotalNumberOfCompositions, 7163 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 2175 VarBasedMoverChecksPositive, 80 VarBasedMoverChecksNegative, 20 SemBasedMoverChecksPositive, 60 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 524 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.0s, 99 PlacesBefore, 43 PlacesAfterwards, 99 TransitionsBefore, 38 TransitionsAfterwards, 2850 CoEnabledTransitionPairs, 5 FixpointIterations, 23 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 5 ChoiceCompositions, 75 TotalNumberOfCompositions, 9531 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 2178 VarBasedMoverChecksPositive, 70 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 60 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 420 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 107 PlacesBefore, 49 PlacesAfterwards, 106 TransitionsBefore, 43 TransitionsAfterwards, 3660 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 9 ConcurrentYvCompositions, 5 ChoiceCompositions, 76 TotalNumberOfCompositions, 14446 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 3622 VarBasedMoverChecksPositive, 131 VarBasedMoverChecksNegative, 42 SemBasedMoverChecksPositive, 89 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.6s, 977 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.9s, 115 PlacesBefore, 55 PlacesAfterwards, 113 TransitionsBefore, 48 TransitionsAfterwards, 4550 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 80 TotalNumberOfCompositions, 19547 MoverChecksTotal - TimeoutResultAtElement [Line: 678]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 678). Cancelled while BasicCegarLoop was constructing initial abstraction,while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 55 places, 48 transitions, 194 flow. Already constructed 534157 states. Currently 19970 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 64 locations, 1 error locations. Started 7 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 810.5s, OverallIterations: 22, TraceHistogramMax: 7, AutomataDifference: 7.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 747.5s, HoareTripleCheckerStatistics: 542 SDtfs, 600 SDslu, 671 SDs, 0 SdLazy, 272 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 132 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127122occurred 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: 51.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 6288 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 349 NumberOfCodeBlocks, 349 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 227 ConstructedInterpolants, 0 QuantifiedInterpolants, 14479 SizeOfPredicates, 5 NumberOfNonLiveVariables, 478 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 21 InterpolantComputations, 11 PerfectInterpolantSequences, 25/73 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 could not prove your program: Timeout Completed graceful shutdown