/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-ext/40_barrier_vf.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 14:41:41,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 14:41:41,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 14:41:41,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 14:41:41,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 14:41:41,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 14:41:41,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 14:41:41,110 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 14:41:41,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 14:41:41,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 14:41:41,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 14:41:41,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 14:41:41,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 14:41:41,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 14:41:41,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 14:41:41,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 14:41:41,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 14:41:41,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 14:41:41,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 14:41:41,135 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 14:41:41,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 14:41:41,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 14:41:41,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 14:41:41,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 14:41:41,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 14:41:41,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 14:41:41,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 14:41:41,151 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 14:41:41,152 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 14:41:41,153 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 14:41:41,153 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 14:41:41,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 14:41:41,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 14:41:41,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 14:41:41,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 14:41:41,158 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 14:41:41,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 14:41:41,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 14:41:41,159 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 14:41:41,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 14:41:41,161 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 14:41:41,162 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 [2020-04-17 14:41:41,202 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 14:41:41,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 14:41:41,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 14:41:41,207 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 14:41:41,207 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 14:41:41,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 14:41:41,207 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 14:41:41,208 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 14:41:41,208 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 14:41:41,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 14:41:41,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 14:41:41,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 14:41:41,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 14:41:41,209 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 14:41:41,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 14:41:41,210 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 14:41:41,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 14:41:41,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 14:41:41,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 14:41:41,211 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 14:41:41,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 14:41:41,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 14:41:41,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 14:41:41,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 14:41:41,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 14:41:41,212 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 14:41:41,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 14:41:41,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 14:41:41,213 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-04-17 14:41:41,213 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 14:41:41,492 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 14:41:41,506 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 14:41:41,509 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 14:41:41,511 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 14:41:41,511 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 14:41:41,512 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/40_barrier_vf.i [2020-04-17 14:41:41,573 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7041d76dd/0e3e61cb64c34fb29be9688b7b005bfe/FLAGb46a5f8c7 [2020-04-17 14:41:42,060 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 14:41:42,060 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/40_barrier_vf.i [2020-04-17 14:41:42,090 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7041d76dd/0e3e61cb64c34fb29be9688b7b005bfe/FLAGb46a5f8c7 [2020-04-17 14:41:42,357 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7041d76dd/0e3e61cb64c34fb29be9688b7b005bfe [2020-04-17 14:41:42,367 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 14:41:42,386 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 14:41:42,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 14:41:42,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 14:41:42,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 14:41:42,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 02:41:42" (1/1) ... [2020-04-17 14:41:42,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25aaec75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:41:42, skipping insertion in model container [2020-04-17 14:41:42,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 02:41:42" (1/1) ... [2020-04-17 14:41:42,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 14:41:42,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 14:41:42,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 14:41:42,995 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 14:41:43,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 14:41:43,147 INFO L208 MainTranslator]: Completed translation [2020-04-17 14:41:43,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:41:43 WrapperNode [2020-04-17 14:41:43,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 14:41:43,148 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 14:41:43,148 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 14:41:43,149 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 14:41:43,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:41:43" (1/1) ... [2020-04-17 14:41:43,174 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:41:43" (1/1) ... [2020-04-17 14:41:43,199 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 14:41:43,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 14:41:43,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 14:41:43,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 14:41:43,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:41:43" (1/1) ... [2020-04-17 14:41:43,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:41:43" (1/1) ... [2020-04-17 14:41:43,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:41:43" (1/1) ... [2020-04-17 14:41:43,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:41:43" (1/1) ... [2020-04-17 14:41:43,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:41:43" (1/1) ... [2020-04-17 14:41:43,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:41:43" (1/1) ... [2020-04-17 14:41:43,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:41:43" (1/1) ... [2020-04-17 14:41:43,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 14:41:43,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 14:41:43,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 14:41:43,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 14:41:43,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:41:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 14:41:43,307 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-04-17 14:41:43,308 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-04-17 14:41:43,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 14:41:43,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 14:41:43,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 14:41:43,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 14:41:43,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 14:41:43,311 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 14:41:43,951 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 14:41:43,951 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-04-17 14:41:43,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 02:41:43 BoogieIcfgContainer [2020-04-17 14:41:43,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 14:41:43,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 14:41:43,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 14:41:43,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 14:41:43,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 02:41:42" (1/3) ... [2020-04-17 14:41:43,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f747f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 02:41:43, skipping insertion in model container [2020-04-17 14:41:43,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:41:43" (2/3) ... [2020-04-17 14:41:43,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f747f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 02:41:43, skipping insertion in model container [2020-04-17 14:41:43,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 02:41:43" (3/3) ... [2020-04-17 14:41:43,971 INFO L109 eAbstractionObserver]: Analyzing ICFG 40_barrier_vf.i [2020-04-17 14:41:43,982 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 14:41:43,983 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 14:41:43,992 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 14:41:43,994 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 14:41:44,019 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:44,019 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:44,020 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:44,021 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:44,021 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:44,022 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:44,022 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:44,024 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:44,024 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:44,025 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:44,025 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:44,025 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:44,026 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:44,026 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:44,026 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:44,027 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:44,033 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:44,034 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:44,034 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:44,035 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:44,035 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:44,035 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:44,035 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:44,036 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:44,040 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:44,041 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:44,041 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:44,041 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:44,041 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:44,041 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:44,042 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:44,062 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-17 14:41:44,086 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 14:41:44,086 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 14:41:44,087 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 14:41:44,087 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 14:41:44,087 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 14:41:44,087 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 14:41:44,087 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 14:41:44,087 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 14:41:44,104 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 45 transitions, 95 flow [2020-04-17 14:41:44,106 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 44 places, 45 transitions, 95 flow [2020-04-17 14:41:44,135 INFO L129 PetriNetUnfolder]: 5/53 cut-off events. [2020-04-17 14:41:44,135 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 14:41:44,141 INFO L80 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 53 events. 5/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 34. Up to 4 conditions per place. [2020-04-17 14:41:44,143 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 44 places, 45 transitions, 95 flow [2020-04-17 14:41:44,156 INFO L129 PetriNetUnfolder]: 5/53 cut-off events. [2020-04-17 14:41:44,157 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 14:41:44,158 INFO L80 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 53 events. 5/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 34. Up to 4 conditions per place. [2020-04-17 14:41:44,159 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 500 [2020-04-17 14:41:44,160 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 14:41:44,505 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 14:41:45,639 INFO L206 etLargeBlockEncoding]: Checked pairs total: 334 [2020-04-17 14:41:45,639 INFO L214 etLargeBlockEncoding]: Total number of compositions: 43 [2020-04-17 14:41:45,643 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 11 places, 8 transitions, 21 flow [2020-04-17 14:41:45,655 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 19 states. [2020-04-17 14:41:45,658 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-04-17 14:41:45,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-17 14:41:45,668 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 14:41:45,670 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-04-17 14:41:45,670 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 14:41:45,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 14:41:45,677 INFO L82 PathProgramCache]: Analyzing trace with hash 9950712, now seen corresponding path program 1 times [2020-04-17 14:41:45,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 14:41:45,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522595972] [2020-04-17 14:41:45,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 14:41:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 14:41:45,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 14:41:45,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522595972] [2020-04-17 14:41:45,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 14:41:45,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 14:41:45,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126624510] [2020-04-17 14:41:45,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 14:41:45,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 14:41:45,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 14:41:45,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 14:41:45,968 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-04-17 14:41:45,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 14:41:45,984 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-04-17 14:41:45,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 14:41:45,985 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-04-17 14:41:45,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 14:41:45,994 INFO L225 Difference]: With dead ends: 7 [2020-04-17 14:41:45,995 INFO L226 Difference]: Without dead ends: 7 [2020-04-17 14:41:45,996 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 14:41:46,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-04-17 14:41:46,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-04-17 14:41:46,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-04-17 14:41:46,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2020-04-17 14:41:46,026 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 4 [2020-04-17 14:41:46,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 14:41:46,027 INFO L479 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2020-04-17 14:41:46,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 14:41:46,027 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-04-17 14:41:46,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-17 14:41:46,028 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 14:41:46,028 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-04-17 14:41:46,028 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 14:41:46,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 14:41:46,029 INFO L82 PathProgramCache]: Analyzing trace with hash 972631415, now seen corresponding path program 1 times [2020-04-17 14:41:46,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 14:41:46,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015721942] [2020-04-17 14:41:46,029 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 14:41:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 14:41:46,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 14:41:46,090 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-17 14:41:46,090 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-17 14:41:46,092 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-17 14:41:46,092 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-04-17 14:41:46,099 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,099 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,099 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,099 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,100 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,100 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,100 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,100 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,101 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,101 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,101 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,101 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,101 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,102 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,102 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,102 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,102 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,102 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,103 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,103 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,103 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,103 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,104 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,104 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,104 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,104 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,105 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,105 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,105 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,105 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,105 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,105 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,106 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,106 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,106 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,106 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,107 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,107 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,107 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,107 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,108 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,108 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,108 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,108 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,108 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,108 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,109 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,109 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,109 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,110 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,110 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,110 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,110 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,110 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,110 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,112 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,112 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,113 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,113 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,113 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,113 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,113 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:46,115 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 14:41:46,116 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 14:41:46,116 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 14:41:46,116 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 14:41:46,116 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 14:41:46,116 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 14:41:46,116 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 14:41:46,117 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 14:41:46,117 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 14:41:46,120 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 71 transitions, 154 flow [2020-04-17 14:41:46,120 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 69 places, 71 transitions, 154 flow [2020-04-17 14:41:46,142 INFO L129 PetriNetUnfolder]: 9/88 cut-off events. [2020-04-17 14:41:46,142 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-04-17 14:41:46,145 INFO L80 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 88 events. 9/88 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 195 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 59. Up to 6 conditions per place. [2020-04-17 14:41:46,151 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 69 places, 71 transitions, 154 flow [2020-04-17 14:41:46,178 INFO L129 PetriNetUnfolder]: 9/88 cut-off events. [2020-04-17 14:41:46,179 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-04-17 14:41:46,180 INFO L80 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 88 events. 9/88 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 195 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 59. Up to 6 conditions per place. [2020-04-17 14:41:46,182 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2300 [2020-04-17 14:41:46,183 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 14:41:47,536 INFO L206 etLargeBlockEncoding]: Checked pairs total: 13201 [2020-04-17 14:41:47,536 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2020-04-17 14:41:47,537 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 37 transitions, 86 flow [2020-04-17 14:41:47,591 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1040 states. [2020-04-17 14:41:47,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states. [2020-04-17 14:41:47,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-04-17 14:41:47,592 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 14:41:47,592 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-04-17 14:41:47,592 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 14:41:47,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 14:41:47,593 INFO L82 PathProgramCache]: Analyzing trace with hash 451134800, now seen corresponding path program 1 times [2020-04-17 14:41:47,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 14:41:47,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731415895] [2020-04-17 14:41:47,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 14:41:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 14:41:47,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 14:41:47,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731415895] [2020-04-17 14:41:47,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 14:41:47,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 14:41:47,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030259556] [2020-04-17 14:41:47,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 14:41:47,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 14:41:47,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 14:41:47,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 14:41:47,618 INFO L87 Difference]: Start difference. First operand 1040 states. Second operand 2 states. [2020-04-17 14:41:47,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 14:41:47,675 INFO L93 Difference]: Finished difference Result 718 states and 1940 transitions. [2020-04-17 14:41:47,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 14:41:47,676 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-04-17 14:41:47,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 14:41:47,691 INFO L225 Difference]: With dead ends: 718 [2020-04-17 14:41:47,691 INFO L226 Difference]: Without dead ends: 718 [2020-04-17 14:41:47,692 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 14:41:47,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2020-04-17 14:41:47,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 718. [2020-04-17 14:41:47,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 718 states. [2020-04-17 14:41:47,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1940 transitions. [2020-04-17 14:41:47,791 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1940 transitions. Word has length 5 [2020-04-17 14:41:47,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 14:41:47,791 INFO L479 AbstractCegarLoop]: Abstraction has 718 states and 1940 transitions. [2020-04-17 14:41:47,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 14:41:47,791 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1940 transitions. [2020-04-17 14:41:47,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 14:41:47,792 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 14:41:47,793 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2020-04-17 14:41:47,793 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 14:41:47,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 14:41:47,793 INFO L82 PathProgramCache]: Analyzing trace with hash 161916818, now seen corresponding path program 1 times [2020-04-17 14:41:47,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 14:41:47,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861976491] [2020-04-17 14:41:47,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 14:41:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 14:41:47,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 14:41:47,850 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-17 14:41:47,852 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-17 14:41:47,853 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-17 14:41:47,854 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-04-17 14:41:47,861 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,862 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,862 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,862 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,862 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,862 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,863 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,863 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,863 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,863 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,863 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,864 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,864 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,864 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,864 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,864 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,865 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,865 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,865 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,865 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,865 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,865 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,866 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,866 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,866 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,867 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,867 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,867 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,867 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,867 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,867 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,868 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,868 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,868 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,868 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,869 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,869 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,869 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,869 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,869 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,870 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,870 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,870 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,870 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,870 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,870 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,871 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,871 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,871 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,871 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,872 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,872 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,872 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,872 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,872 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,873 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,873 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,873 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,873 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,873 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,874 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,874 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,874 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,876 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,877 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,877 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,877 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,877 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,877 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,877 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,878 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,878 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,878 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,878 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,879 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,879 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,879 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,879 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,879 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,881 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,881 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,881 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,882 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,882 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,882 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,882 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,883 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,884 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,884 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,884 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,884 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,884 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,885 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:47,886 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-17 14:41:47,886 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 14:41:47,887 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 14:41:47,887 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 14:41:47,887 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 14:41:47,887 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 14:41:47,887 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 14:41:47,887 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 14:41:47,887 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 14:41:47,889 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 97 transitions, 215 flow [2020-04-17 14:41:47,889 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 94 places, 97 transitions, 215 flow [2020-04-17 14:41:47,909 INFO L129 PetriNetUnfolder]: 13/123 cut-off events. [2020-04-17 14:41:47,910 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-04-17 14:41:47,912 INFO L80 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 123 events. 13/123 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 349 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 92. Up to 8 conditions per place. [2020-04-17 14:41:47,917 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 94 places, 97 transitions, 215 flow [2020-04-17 14:41:47,934 INFO L129 PetriNetUnfolder]: 13/123 cut-off events. [2020-04-17 14:41:47,934 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-04-17 14:41:47,936 INFO L80 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 123 events. 13/123 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 349 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 92. Up to 8 conditions per place. [2020-04-17 14:41:47,945 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 5400 [2020-04-17 14:41:47,945 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 14:41:49,345 INFO L206 etLargeBlockEncoding]: Checked pairs total: 28220 [2020-04-17 14:41:49,345 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-04-17 14:41:49,346 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 51 transitions, 123 flow [2020-04-17 14:41:50,564 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 14564 states. [2020-04-17 14:41:50,564 INFO L276 IsEmpty]: Start isEmpty. Operand 14564 states. [2020-04-17 14:41:50,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-04-17 14:41:50,565 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 14:41:50,565 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-04-17 14:41:50,565 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 14:41:50,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 14:41:50,566 INFO L82 PathProgramCache]: Analyzing trace with hash 637954440, now seen corresponding path program 1 times [2020-04-17 14:41:50,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 14:41:50,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478013082] [2020-04-17 14:41:50,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 14:41:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 14:41:50,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 14:41:50,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478013082] [2020-04-17 14:41:50,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 14:41:50,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 14:41:50,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853192563] [2020-04-17 14:41:50,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 14:41:50,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 14:41:50,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 14:41:50,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 14:41:50,585 INFO L87 Difference]: Start difference. First operand 14564 states. Second operand 2 states. [2020-04-17 14:41:50,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 14:41:50,738 INFO L93 Difference]: Finished difference Result 9337 states and 34557 transitions. [2020-04-17 14:41:50,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 14:41:50,738 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-04-17 14:41:50,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 14:41:50,856 INFO L225 Difference]: With dead ends: 9337 [2020-04-17 14:41:50,856 INFO L226 Difference]: Without dead ends: 9337 [2020-04-17 14:41:50,856 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 14:41:51,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9337 states. [2020-04-17 14:41:51,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9337 to 9337. [2020-04-17 14:41:51,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9337 states. [2020-04-17 14:41:51,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9337 states to 9337 states and 34557 transitions. [2020-04-17 14:41:51,389 INFO L78 Accepts]: Start accepts. Automaton has 9337 states and 34557 transitions. Word has length 5 [2020-04-17 14:41:51,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 14:41:51,390 INFO L479 AbstractCegarLoop]: Abstraction has 9337 states and 34557 transitions. [2020-04-17 14:41:51,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 14:41:51,390 INFO L276 IsEmpty]: Start isEmpty. Operand 9337 states and 34557 transitions. [2020-04-17 14:41:51,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 14:41:51,392 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 14:41:51,392 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 14:41:51,392 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 14:41:51,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 14:41:51,393 INFO L82 PathProgramCache]: Analyzing trace with hash 867324896, now seen corresponding path program 1 times [2020-04-17 14:41:51,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 14:41:51,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279075091] [2020-04-17 14:41:51,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 14:41:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 14:41:51,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 14:41:51,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279075091] [2020-04-17 14:41:51,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 14:41:51,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 14:41:51,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402176643] [2020-04-17 14:41:51,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 14:41:51,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 14:41:51,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 14:41:51,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 14:41:51,520 INFO L87 Difference]: Start difference. First operand 9337 states and 34557 transitions. Second operand 5 states. [2020-04-17 14:41:52,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 14:41:52,016 INFO L93 Difference]: Finished difference Result 20416 states and 72041 transitions. [2020-04-17 14:41:52,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 14:41:52,017 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-04-17 14:41:52,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 14:41:52,162 INFO L225 Difference]: With dead ends: 20416 [2020-04-17 14:41:52,163 INFO L226 Difference]: Without dead ends: 20416 [2020-04-17 14:41:52,164 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-04-17 14:41:53,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20416 states. [2020-04-17 14:41:53,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20416 to 11968. [2020-04-17 14:41:53,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11968 states. [2020-04-17 14:41:53,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11968 states to 11968 states and 43813 transitions. [2020-04-17 14:41:53,715 INFO L78 Accepts]: Start accepts. Automaton has 11968 states and 43813 transitions. Word has length 11 [2020-04-17 14:41:53,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 14:41:53,716 INFO L479 AbstractCegarLoop]: Abstraction has 11968 states and 43813 transitions. [2020-04-17 14:41:53,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 14:41:53,716 INFO L276 IsEmpty]: Start isEmpty. Operand 11968 states and 43813 transitions. [2020-04-17 14:41:53,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 14:41:53,846 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 14:41:53,846 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2020-04-17 14:41:53,847 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 14:41:53,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 14:41:53,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1762963757, now seen corresponding path program 1 times [2020-04-17 14:41:53,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 14:41:53,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791761587] [2020-04-17 14:41:53,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 14:41:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 14:41:53,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 14:41:53,890 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-17 14:41:53,891 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-17 14:41:53,892 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-17 14:41:53,892 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-04-17 14:41:53,901 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,902 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,902 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,902 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,902 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,902 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,903 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,903 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,903 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,903 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,903 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,904 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,904 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,905 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,905 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,905 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,906 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,906 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,906 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,906 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,906 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,906 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,907 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,907 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,907 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,907 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,907 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,908 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,908 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,908 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,908 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,908 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,908 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,908 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,910 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,910 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,911 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,911 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,911 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,911 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,911 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,914 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,915 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,916 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,916 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,916 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,917 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,917 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,917 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,917 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,917 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,918 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,918 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,918 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,918 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,918 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,919 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,919 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,919 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,919 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,919 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,920 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,920 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,920 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,920 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,920 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,920 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,921 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,921 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,921 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,921 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,921 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,923 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,924 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,924 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,924 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,924 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,924 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,924 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,925 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,925 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,925 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,925 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,925 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,925 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,926 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,926 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,926 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,926 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,926 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,927 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,927 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,927 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,927 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,927 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,928 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,928 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,928 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,928 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,929 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,929 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,929 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,929 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,931 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,931 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,931 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,931 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,931 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,932 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,932 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,933 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,933 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,934 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,934 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,935 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,935 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,935 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,937 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,937 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,937 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,937 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,937 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_Barrier2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,938 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,938 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:41:53,939 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-04-17 14:41:53,939 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 14:41:53,940 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 14:41:53,940 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 14:41:53,940 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 14:41:53,940 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 14:41:53,940 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 14:41:53,940 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 14:41:53,940 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 14:41:53,942 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 123 transitions, 278 flow [2020-04-17 14:41:53,942 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 119 places, 123 transitions, 278 flow [2020-04-17 14:41:53,974 INFO L129 PetriNetUnfolder]: 17/158 cut-off events. [2020-04-17 14:41:53,974 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-04-17 14:41:53,977 INFO L80 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 158 events. 17/158 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 519 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 131. Up to 10 conditions per place. [2020-04-17 14:41:53,987 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 119 places, 123 transitions, 278 flow [2020-04-17 14:41:54,006 INFO L129 PetriNetUnfolder]: 17/158 cut-off events. [2020-04-17 14:41:54,006 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-04-17 14:41:54,008 INFO L80 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 158 events. 17/158 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 519 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 131. Up to 10 conditions per place. [2020-04-17 14:41:54,017 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 9800 [2020-04-17 14:41:54,017 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 14:41:55,799 INFO L206 etLargeBlockEncoding]: Checked pairs total: 64438 [2020-04-17 14:41:55,799 INFO L214 etLargeBlockEncoding]: Total number of compositions: 80 [2020-04-17 14:41:55,799 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 70 places, 67 transitions, 166 flow [2020-04-17 14:43:36,577 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 203900 states. [2020-04-17 14:43:36,577 INFO L276 IsEmpty]: Start isEmpty. Operand 203900 states. [2020-04-17 14:43:36,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 14:43:36,578 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 14:43:36,578 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-04-17 14:43:36,578 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 14:43:36,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 14:43:36,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1285000934, now seen corresponding path program 1 times [2020-04-17 14:43:36,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 14:43:36,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282012082] [2020-04-17 14:43:36,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 14:43:36,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 14:43:36,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-17 14:43:36,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282012082] [2020-04-17 14:43:36,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 14:43:36,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 14:43:36,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996808206] [2020-04-17 14:43:36,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 14:43:36,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 14:43:36,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 14:43:36,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 14:43:36,618 INFO L87 Difference]: Start difference. First operand 203900 states. Second operand 2 states. [2020-04-17 14:43:37,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 14:43:37,391 INFO L93 Difference]: Finished difference Result 121384 states and 570625 transitions. [2020-04-17 14:43:37,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 14:43:37,392 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-17 14:43:37,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 14:43:38,060 INFO L225 Difference]: With dead ends: 121384 [2020-04-17 14:43:38,060 INFO L226 Difference]: Without dead ends: 121384 [2020-04-17 14:43:38,060 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 14:43:48,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121384 states. [2020-04-17 14:43:51,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121384 to 121384. [2020-04-17 14:43:51,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121384 states. [2020-04-17 14:43:51,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121384 states to 121384 states and 570625 transitions. [2020-04-17 14:43:51,589 INFO L78 Accepts]: Start accepts. Automaton has 121384 states and 570625 transitions. Word has length 8 [2020-04-17 14:43:51,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 14:43:51,589 INFO L479 AbstractCegarLoop]: Abstraction has 121384 states and 570625 transitions. [2020-04-17 14:43:51,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 14:43:51,589 INFO L276 IsEmpty]: Start isEmpty. Operand 121384 states and 570625 transitions. [2020-04-17 14:43:51,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 14:43:51,590 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 14:43:51,590 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 14:43:51,591 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 14:43:51,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 14:43:51,591 INFO L82 PathProgramCache]: Analyzing trace with hash 607719712, now seen corresponding path program 1 times [2020-04-17 14:43:51,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 14:43:51,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115678284] [2020-04-17 14:43:51,592 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 14:43:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 14:43:51,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 14:43:51,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115678284] [2020-04-17 14:43:51,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 14:43:51,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 14:43:51,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707905387] [2020-04-17 14:43:51,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 14:43:51,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 14:43:51,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 14:43:51,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 14:43:51,663 INFO L87 Difference]: Start difference. First operand 121384 states and 570625 transitions. Second operand 5 states. [2020-04-17 14:44:01,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 14:44:01,480 INFO L93 Difference]: Finished difference Result 300608 states and 1356769 transitions. [2020-04-17 14:44:01,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 14:44:01,481 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-04-17 14:44:01,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 14:44:02,646 INFO L225 Difference]: With dead ends: 300608 [2020-04-17 14:44:02,646 INFO L226 Difference]: Without dead ends: 300608 [2020-04-17 14:44:02,647 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-17 14:44:12,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300608 states. [2020-04-17 14:44:24,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300608 to 166396. [2020-04-17 14:44:24,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166396 states. [2020-04-17 14:44:25,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166396 states to 166396 states and 771075 transitions. [2020-04-17 14:44:25,966 INFO L78 Accepts]: Start accepts. Automaton has 166396 states and 771075 transitions. Word has length 11 [2020-04-17 14:44:25,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 14:44:25,966 INFO L479 AbstractCegarLoop]: Abstraction has 166396 states and 771075 transitions. [2020-04-17 14:44:25,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 14:44:25,966 INFO L276 IsEmpty]: Start isEmpty. Operand 166396 states and 771075 transitions. [2020-04-17 14:44:25,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 14:44:25,968 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 14:44:25,968 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 14:44:25,968 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 14:44:25,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 14:44:25,968 INFO L82 PathProgramCache]: Analyzing trace with hash 923942098, now seen corresponding path program 1 times [2020-04-17 14:44:25,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 14:44:25,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959143706] [2020-04-17 14:44:25,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 14:44:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 14:44:26,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 14:44:26,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959143706] [2020-04-17 14:44:26,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 14:44:26,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 14:44:26,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000924410] [2020-04-17 14:44:26,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 14:44:26,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 14:44:26,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 14:44:26,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 14:44:26,029 INFO L87 Difference]: Start difference. First operand 166396 states and 771075 transitions. Second operand 3 states. [2020-04-17 14:44:35,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 14:44:35,105 INFO L93 Difference]: Finished difference Result 244471 states and 1104180 transitions. [2020-04-17 14:44:35,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 14:44:35,106 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-04-17 14:44:35,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 14:44:35,929 INFO L225 Difference]: With dead ends: 244471 [2020-04-17 14:44:35,929 INFO L226 Difference]: Without dead ends: 244471 [2020-04-17 14:44:35,930 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 14:44:47,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244471 states. [2020-04-17 14:44:51,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244471 to 202568. [2020-04-17 14:44:51,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202568 states. [2020-04-17 14:44:53,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202568 states to 202568 states and 922731 transitions. [2020-04-17 14:44:53,294 INFO L78 Accepts]: Start accepts. Automaton has 202568 states and 922731 transitions. Word has length 13 [2020-04-17 14:44:53,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 14:44:53,294 INFO L479 AbstractCegarLoop]: Abstraction has 202568 states and 922731 transitions. [2020-04-17 14:44:53,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 14:44:53,295 INFO L276 IsEmpty]: Start isEmpty. Operand 202568 states and 922731 transitions. [2020-04-17 14:44:53,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 14:44:53,296 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 14:44:53,296 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 14:44:53,296 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 14:44:53,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 14:44:53,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1135848223, now seen corresponding path program 1 times [2020-04-17 14:44:53,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 14:44:53,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500765371] [2020-04-17 14:44:53,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 14:44:53,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 14:44:53,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-17 14:44:53,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500765371] [2020-04-17 14:44:53,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 14:44:53,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 14:44:53,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292286299] [2020-04-17 14:44:53,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 14:44:53,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 14:44:53,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 14:44:53,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 14:44:53,365 INFO L87 Difference]: Start difference. First operand 202568 states and 922731 transitions. Second operand 5 states. [2020-04-17 14:45:03,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 14:45:03,610 INFO L93 Difference]: Finished difference Result 369277 states and 1633491 transitions. [2020-04-17 14:45:03,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 14:45:03,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-17 14:45:03,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 14:45:04,900 INFO L225 Difference]: With dead ends: 369277 [2020-04-17 14:45:04,900 INFO L226 Difference]: Without dead ends: 369277 [2020-04-17 14:45:04,901 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 Received shutdown request... [2020-04-17 14:45:18,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369277 states. [2020-04-17 14:45:18,380 WARN L544 AbstractCegarLoop]: Verification canceled [2020-04-17 14:45:18,383 WARN L228 ceAbstractionStarter]: Timeout [2020-04-17 14:45:18,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 02:45:18 BasicIcfg [2020-04-17 14:45:18,383 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 14:45:18,385 INFO L168 Benchmark]: Toolchain (without parser) took 216015.96 ms. Allocated memory was 144.2 MB in the beginning and 5.2 GB in the end (delta: 5.0 GB). Free memory was 100.6 MB in the beginning and 2.1 GB in the end (delta: -2.0 GB). Peak memory consumption was 4.2 GB. Max. memory is 7.1 GB. [2020-04-17 14:45:18,386 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 144.2 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-17 14:45:18,387 INFO L168 Benchmark]: CACSL2BoogieTranslator took 760.88 ms. Allocated memory was 144.2 MB in the beginning and 205.0 MB in the end (delta: 60.8 MB). Free memory was 98.6 MB in the beginning and 162.7 MB in the end (delta: -64.1 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-04-17 14:45:18,387 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.12 ms. Allocated memory is still 205.0 MB. Free memory was 162.7 MB in the beginning and 160.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 14:45:18,388 INFO L168 Benchmark]: Boogie Preprocessor took 32.89 ms. Allocated memory is still 205.0 MB. Free memory was 160.7 MB in the beginning and 159.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-17 14:45:18,389 INFO L168 Benchmark]: RCFGBuilder took 725.93 ms. Allocated memory is still 205.0 MB. Free memory was 159.4 MB in the beginning and 122.6 MB in the end (delta: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. [2020-04-17 14:45:18,390 INFO L168 Benchmark]: TraceAbstraction took 214420.60 ms. Allocated memory was 205.0 MB in the beginning and 5.2 GB in the end (delta: 5.0 GB). Free memory was 122.6 MB in the beginning and 2.1 GB in the end (delta: -2.0 GB). Peak memory consumption was 4.2 GB. Max. memory is 7.1 GB. [2020-04-17 14:45:18,394 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 144.2 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 760.88 ms. Allocated memory was 144.2 MB in the beginning and 205.0 MB in the end (delta: 60.8 MB). Free memory was 98.6 MB in the beginning and 162.7 MB in the end (delta: -64.1 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.12 ms. Allocated memory is still 205.0 MB. Free memory was 162.7 MB in the beginning and 160.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.89 ms. Allocated memory is still 205.0 MB. Free memory was 160.7 MB in the beginning and 159.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 725.93 ms. Allocated memory is still 205.0 MB. Free memory was 159.4 MB in the beginning and 122.6 MB in the end (delta: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214420.60 ms. Allocated memory was 205.0 MB in the beginning and 5.2 GB in the end (delta: 5.0 GB). Free memory was 122.6 MB in the beginning and 2.1 GB in the end (delta: -2.0 GB). Peak memory consumption was 4.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 44 ProgramPointsBefore, 11 ProgramPointsAfterwards, 45 TransitionsBefore, 8 TransitionsAfterwards, 500 CoEnabledTransitionPairs, 7 FixpointIterations, 8 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 4 ChoiceCompositions, 252 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 334 CheckedPairsTotal, 43 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 69 ProgramPointsBefore, 38 ProgramPointsAfterwards, 71 TransitionsBefore, 37 TransitionsAfterwards, 2300 CoEnabledTransitionPairs, 12 FixpointIterations, 8 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 3 ChoiceCompositions, 1201 VarBasedMoverChecksPositive, 200 VarBasedMoverChecksNegative, 267 SemBasedMoverChecksPositive, 55 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.7s, 0 MoverChecksTotal, 13201 CheckedPairsTotal, 55 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 94 ProgramPointsBefore, 54 ProgramPointsAfterwards, 97 TransitionsBefore, 51 TransitionsAfterwards, 5400 CoEnabledTransitionPairs, 10 FixpointIterations, 8 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 6 ChoiceCompositions, 2273 VarBasedMoverChecksPositive, 216 VarBasedMoverChecksNegative, 235 SemBasedMoverChecksPositive, 87 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.6s, 0 MoverChecksTotal, 28220 CheckedPairsTotal, 59 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 119 ProgramPointsBefore, 70 ProgramPointsAfterwards, 123 TransitionsBefore, 67 TransitionsAfterwards, 9800 CoEnabledTransitionPairs, 12 FixpointIterations, 8 TrivialSequentialCompositions, 55 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 7 ChoiceCompositions, 4231 VarBasedMoverChecksPositive, 460 VarBasedMoverChecksNegative, 410 SemBasedMoverChecksPositive, 115 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 1.0s, 0 MoverChecksTotal, 64438 CheckedPairsTotal, 80 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 701]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 701). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 41 locations, 1 error locations. Started 4 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 214.1s, OverallIterations: 11, TraceHistogramMax: 4, AutomataDifference: 34.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 108.3s, HoareTripleCheckerStatistics: 637 SDtfs, 544 SDslu, 663 SDs, 0 SdLazy, 247 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=203900occurred 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: 69.8s AutomataMinimizationTime, 8 MinimizatonAttempts, 184563 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 1886 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 4/4 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