/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe007_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 21:53:51,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 21:53:51,146 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 21:53:51,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 21:53:51,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 21:53:51,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 21:53:51,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 21:53:51,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 21:53:51,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 21:53:51,165 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 21:53:51,166 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 21:53:51,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 21:53:51,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 21:53:51,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 21:53:51,170 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 21:53:51,171 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 21:53:51,172 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 21:53:51,173 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 21:53:51,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 21:53:51,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 21:53:51,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 21:53:51,178 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 21:53:51,179 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 21:53:51,180 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 21:53:51,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 21:53:51,183 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 21:53:51,183 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 21:53:51,184 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 21:53:51,184 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 21:53:51,185 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 21:53:51,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 21:53:51,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 21:53:51,187 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 21:53:51,188 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 21:53:51,189 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 21:53:51,189 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 21:53:51,189 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 21:53:51,190 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 21:53:51,190 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 21:53:51,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 21:53:51,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 21:53:51,192 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-04-17 21:53:51,206 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 21:53:51,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 21:53:51,207 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 21:53:51,208 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 21:53:51,208 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 21:53:51,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 21:53:51,208 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 21:53:51,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 21:53:51,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 21:53:51,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 21:53:51,209 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 21:53:51,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 21:53:51,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 21:53:51,210 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 21:53:51,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 21:53:51,210 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 21:53:51,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 21:53:51,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 21:53:51,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 21:53:51,211 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 21:53:51,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 21:53:51,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 21:53:51,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 21:53:51,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 21:53:51,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 21:53:51,212 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 21:53:51,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 21:53:51,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 21:53:51,213 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 21:53:51,517 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 21:53:51,531 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 21:53:51,535 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 21:53:51,536 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 21:53:51,537 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 21:53:51,538 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe007_pso.opt.i [2020-04-17 21:53:51,621 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0748ea70/c3c60b21656844e09af743abfbd6b5d4/FLAGb184dc05f [2020-04-17 21:53:52,167 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 21:53:52,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_pso.opt.i [2020-04-17 21:53:52,183 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0748ea70/c3c60b21656844e09af743abfbd6b5d4/FLAGb184dc05f [2020-04-17 21:53:52,482 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0748ea70/c3c60b21656844e09af743abfbd6b5d4 [2020-04-17 21:53:52,494 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 21:53:52,518 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 21:53:52,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 21:53:52,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 21:53:52,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 21:53:52,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 09:53:52" (1/1) ... [2020-04-17 21:53:52,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b6e754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:53:52, skipping insertion in model container [2020-04-17 21:53:52,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 09:53:52" (1/1) ... [2020-04-17 21:53:52,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 21:53:52,608 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 21:53:53,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 21:53:53,141 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 21:53:53,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 21:53:53,291 INFO L208 MainTranslator]: Completed translation [2020-04-17 21:53:53,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:53:53 WrapperNode [2020-04-17 21:53:53,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 21:53:53,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 21:53:53,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 21:53:53,293 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 21:53:53,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:53:53" (1/1) ... [2020-04-17 21:53:53,333 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:53:53" (1/1) ... [2020-04-17 21:53:53,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 21:53:53,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 21:53:53,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 21:53:53,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 21:53:53,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:53:53" (1/1) ... [2020-04-17 21:53:53,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:53:53" (1/1) ... [2020-04-17 21:53:53,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:53:53" (1/1) ... [2020-04-17 21:53:53,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:53:53" (1/1) ... [2020-04-17 21:53:53,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:53:53" (1/1) ... [2020-04-17 21:53:53,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:53:53" (1/1) ... [2020-04-17 21:53:53,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:53:53" (1/1) ... [2020-04-17 21:53:53,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 21:53:53,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 21:53:53,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 21:53:53,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 21:53:53,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:53:53" (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 21:53:53,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 21:53:53,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 21:53:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 21:53:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 21:53:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 21:53:53,453 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 21:53:53,454 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 21:53:53,454 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 21:53:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 21:53:53,455 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 21:53:53,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 21:53:53,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 21:53:53,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 21:53:53,458 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 21:53:53,806 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 21:53:53,806 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 21:53:53,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 09:53:53 BoogieIcfgContainer [2020-04-17 21:53:53,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 21:53:53,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 21:53:53,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 21:53:53,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 21:53:53,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 09:53:52" (1/3) ... [2020-04-17 21:53:53,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5094c455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 09:53:53, skipping insertion in model container [2020-04-17 21:53:53,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:53:53" (2/3) ... [2020-04-17 21:53:53,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5094c455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 09:53:53, skipping insertion in model container [2020-04-17 21:53:53,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 09:53:53" (3/3) ... [2020-04-17 21:53:53,819 INFO L109 eAbstractionObserver]: Analyzing ICFG safe007_pso.opt.i [2020-04-17 21:53:53,829 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 21:53:53,830 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 21:53:53,836 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 21:53:53,837 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 21:53:53,865 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:53,866 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:53,866 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:53,867 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:53,868 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:53,868 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:53,869 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:53,869 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:53,869 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:53,870 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:53,870 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:53,870 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:53,871 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:53,871 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:53,871 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:53,872 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:53,872 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:53,872 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:53,876 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:53,877 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:53,877 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:53,877 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:53,883 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:53,884 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:53,884 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:53,884 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:53,893 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:53,893 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:53,894 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:53,894 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:53,907 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 21:53:53,926 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 21:53:53,926 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 21:53:53,926 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 21:53:53,927 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 21:53:53,927 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 21:53:53,927 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 21:53:53,927 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 21:53:53,927 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 21:53:53,943 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-04-17 21:53:53,945 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-17 21:53:53,989 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-17 21:53:53,989 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 21:53:53,994 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 21:53:53,997 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-17 21:53:54,019 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-17 21:53:54,020 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 21:53:54,021 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 21:53:54,023 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 21:53:54,024 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 21:53:55,551 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-04-17 21:53:55,682 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2463 [2020-04-17 21:53:55,682 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-17 21:53:55,695 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-17 21:53:55,753 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-17 21:53:55,755 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-17 21:53:55,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 21:53:55,767 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:53:55,768 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:53:55,769 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:53:55,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:53:55,778 INFO L82 PathProgramCache]: Analyzing trace with hash -691335731, now seen corresponding path program 1 times [2020-04-17 21:53:55,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:53:55,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072487383] [2020-04-17 21:53:55,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:53:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:53:56,041 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 21:53:56,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072487383] [2020-04-17 21:53:56,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:53:56,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:53:56,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898069878] [2020-04-17 21:53:56,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 21:53:56,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:53:56,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 21:53:56,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 21:53:56,062 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-17 21:53:56,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:53:56,094 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-17 21:53:56,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 21:53:56,095 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-17 21:53:56,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:53:56,112 INFO L225 Difference]: With dead ends: 362 [2020-04-17 21:53:56,113 INFO L226 Difference]: Without dead ends: 298 [2020-04-17 21:53:56,114 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 21:53:56,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-17 21:53:56,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-17 21:53:56,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-17 21:53:56,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-17 21:53:56,188 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-17 21:53:56,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:53:56,189 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-17 21:53:56,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 21:53:56,190 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-17 21:53:56,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 21:53:56,191 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:53:56,191 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:53:56,192 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:53:56,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:53:56,192 INFO L82 PathProgramCache]: Analyzing trace with hash 43425274, now seen corresponding path program 1 times [2020-04-17 21:53:56,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:53:56,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425151604] [2020-04-17 21:53:56,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:53:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:53:56,333 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 21:53:56,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425151604] [2020-04-17 21:53:56,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:53:56,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:53:56,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780437937] [2020-04-17 21:53:56,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:53:56,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:53:56,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:53:56,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:53:56,336 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-04-17 21:53:56,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:53:56,372 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-04-17 21:53:56,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 21:53:56,373 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 21:53:56,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:53:56,376 INFO L225 Difference]: With dead ends: 330 [2020-04-17 21:53:56,377 INFO L226 Difference]: Without dead ends: 266 [2020-04-17 21:53:56,377 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:53:56,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-04-17 21:53:56,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-04-17 21:53:56,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-04-17 21:53:56,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-04-17 21:53:56,425 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-04-17 21:53:56,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:53:56,425 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-04-17 21:53:56,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:53:56,426 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-04-17 21:53:56,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 21:53:56,427 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:53:56,428 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:53:56,428 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:53:56,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:53:56,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1226466257, now seen corresponding path program 1 times [2020-04-17 21:53:56,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:53:56,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282320860] [2020-04-17 21:53:56,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:53:56,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:53:56,531 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 21:53:56,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282320860] [2020-04-17 21:53:56,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:53:56,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 21:53:56,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161102782] [2020-04-17 21:53:56,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 21:53:56,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:53:56,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 21:53:56,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-17 21:53:56,534 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 6 states. [2020-04-17 21:53:56,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:53:56,642 INFO L93 Difference]: Finished difference Result 350 states and 940 transitions. [2020-04-17 21:53:56,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-17 21:53:56,643 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-04-17 21:53:56,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:53:56,645 INFO L225 Difference]: With dead ends: 350 [2020-04-17 21:53:56,645 INFO L226 Difference]: Without dead ends: 182 [2020-04-17 21:53:56,645 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-04-17 21:53:56,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-04-17 21:53:56,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-04-17 21:53:56,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-04-17 21:53:56,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 458 transitions. [2020-04-17 21:53:56,658 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 458 transitions. Word has length 10 [2020-04-17 21:53:56,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:53:56,658 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 458 transitions. [2020-04-17 21:53:56,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 21:53:56,658 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 458 transitions. [2020-04-17 21:53:56,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 21:53:56,660 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:53:56,660 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:53:56,660 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:53:56,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:53:56,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1670897012, now seen corresponding path program 1 times [2020-04-17 21:53:56,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:53:56,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869150936] [2020-04-17 21:53:56,662 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:53:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:53:56,741 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 21:53:56,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869150936] [2020-04-17 21:53:56,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:53:56,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:53:56,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464661895] [2020-04-17 21:53:56,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:53:56,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:53:56,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:53:56,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:53:56,744 INFO L87 Difference]: Start difference. First operand 182 states and 458 transitions. Second operand 4 states. [2020-04-17 21:53:56,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:53:56,767 INFO L93 Difference]: Finished difference Result 194 states and 472 transitions. [2020-04-17 21:53:56,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 21:53:56,769 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 21:53:56,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:53:56,771 INFO L225 Difference]: With dead ends: 194 [2020-04-17 21:53:56,772 INFO L226 Difference]: Without dead ends: 170 [2020-04-17 21:53:56,772 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:53:56,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-04-17 21:53:56,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-04-17 21:53:56,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-04-17 21:53:56,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 420 transitions. [2020-04-17 21:53:56,787 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 420 transitions. Word has length 12 [2020-04-17 21:53:56,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:53:56,787 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 420 transitions. [2020-04-17 21:53:56,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:53:56,788 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 420 transitions. [2020-04-17 21:53:56,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 21:53:56,795 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:53:56,795 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:53:56,796 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:53:56,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:53:56,796 INFO L82 PathProgramCache]: Analyzing trace with hash 257080554, now seen corresponding path program 1 times [2020-04-17 21:53:56,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:53:56,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85514434] [2020-04-17 21:53:56,797 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:53:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:53:56,909 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 21:53:56,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85514434] [2020-04-17 21:53:56,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:53:56,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 21:53:56,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302986400] [2020-04-17 21:53:56,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 21:53:56,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:53:56,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 21:53:56,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:53:56,915 INFO L87 Difference]: Start difference. First operand 170 states and 420 transitions. Second operand 5 states. [2020-04-17 21:53:56,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:53:56,969 INFO L93 Difference]: Finished difference Result 194 states and 469 transitions. [2020-04-17 21:53:56,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 21:53:56,970 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-17 21:53:56,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:53:56,971 INFO L225 Difference]: With dead ends: 194 [2020-04-17 21:53:56,971 INFO L226 Difference]: Without dead ends: 98 [2020-04-17 21:53:56,972 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 21:53:56,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-04-17 21:53:56,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-04-17 21:53:56,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-04-17 21:53:57,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 218 transitions. [2020-04-17 21:53:57,000 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 218 transitions. Word has length 13 [2020-04-17 21:53:57,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:53:57,001 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 218 transitions. [2020-04-17 21:53:57,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 21:53:57,001 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 218 transitions. [2020-04-17 21:53:57,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 21:53:57,002 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:53:57,002 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:53:57,002 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:53:57,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:53:57,003 INFO L82 PathProgramCache]: Analyzing trace with hash -647415272, now seen corresponding path program 1 times [2020-04-17 21:53:57,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:53:57,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464136186] [2020-04-17 21:53:57,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:53:57,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:53:57,058 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 21:53:57,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464136186] [2020-04-17 21:53:57,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:53:57,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 21:53:57,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535618089] [2020-04-17 21:53:57,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 21:53:57,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:53:57,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 21:53:57,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:53:57,060 INFO L87 Difference]: Start difference. First operand 98 states and 218 transitions. Second operand 5 states. [2020-04-17 21:53:57,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:53:57,097 INFO L93 Difference]: Finished difference Result 86 states and 186 transitions. [2020-04-17 21:53:57,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 21:53:57,098 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-17 21:53:57,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:53:57,098 INFO L225 Difference]: With dead ends: 86 [2020-04-17 21:53:57,099 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 21:53:57,099 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 21:53:57,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 21:53:57,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 21:53:57,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 21:53:57,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 21:53:57,100 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-04-17 21:53:57,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:53:57,100 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 21:53:57,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 21:53:57,101 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 21:53:57,101 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 21:53:57,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 09:53:57 BasicIcfg [2020-04-17 21:53:57,105 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 21:53:57,107 INFO L168 Benchmark]: Toolchain (without parser) took 4610.66 ms. Allocated memory was 145.8 MB in the beginning and 248.0 MB in the end (delta: 102.2 MB). Free memory was 102.1 MB in the beginning and 200.4 MB in the end (delta: -98.3 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-04-17 21:53:57,107 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 145.8 MB. Free memory is still 121.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-17 21:53:57,108 INFO L168 Benchmark]: CACSL2BoogieTranslator took 770.45 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 100.0 MB in the beginning and 159.1 MB in the end (delta: -59.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-04-17 21:53:57,109 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.24 ms. Allocated memory is still 202.4 MB. Free memory was 159.1 MB in the beginning and 157.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-17 21:53:57,110 INFO L168 Benchmark]: Boogie Preprocessor took 23.91 ms. Allocated memory is still 202.4 MB. Free memory was 157.2 MB in the beginning and 155.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-17 21:53:57,111 INFO L168 Benchmark]: RCFGBuilder took 420.07 ms. Allocated memory is still 202.4 MB. Free memory was 155.3 MB in the beginning and 132.8 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-04-17 21:53:57,112 INFO L168 Benchmark]: TraceAbstraction took 3292.85 ms. Allocated memory was 202.4 MB in the beginning and 248.0 MB in the end (delta: 45.6 MB). Free memory was 132.8 MB in the beginning and 200.4 MB in the end (delta: -67.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-17 21:53:57,115 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 145.8 MB. Free memory is still 121.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 770.45 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 100.0 MB in the beginning and 159.1 MB in the end (delta: -59.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 73.24 ms. Allocated memory is still 202.4 MB. Free memory was 159.1 MB in the beginning and 157.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.91 ms. Allocated memory is still 202.4 MB. Free memory was 157.2 MB in the beginning and 155.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 420.07 ms. Allocated memory is still 202.4 MB. Free memory was 155.3 MB in the beginning and 132.8 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3292.85 ms. Allocated memory was 202.4 MB in the beginning and 248.0 MB in the end (delta: 45.6 MB). Free memory was 132.8 MB in the beginning and 200.4 MB in the end (delta: -67.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 79 ProgramPointsBefore, 32 ProgramPointsAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 688 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2463 CheckedPairsTotal, 57 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 127 SDtfs, 160 SDslu, 180 SDs, 0 SdLazy, 68 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 2100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...