/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-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 14:02:30,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 14:02:30,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 14:02:30,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 14:02:30,186 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 14:02:30,187 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 14:02:30,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 14:02:30,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 14:02:30,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 14:02:30,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 14:02:30,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 14:02:30,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 14:02:30,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 14:02:30,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 14:02:30,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 14:02:30,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 14:02:30,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 14:02:30,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 14:02:30,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 14:02:30,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 14:02:30,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 14:02:30,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 14:02:30,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 14:02:30,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 14:02:30,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-27 14:02:30,227 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 14:02:30,228 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 14:02:30,228 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 14:02:30,229 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 14:02:30,230 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 14:02:30,231 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 14:02:30,231 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 14:02:30,231 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 14:02:30,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 14:02:30,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 14:02:30,237 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 14:02:30,238 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-NoLbe.epf [2019-12-27 14:02:30,267 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 14:02:30,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 14:02:30,270 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 14:02:30,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 14:02:30,270 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 14:02:30,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 14:02:30,270 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 14:02:30,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 14:02:30,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 14:02:30,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 14:02:30,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 14:02:30,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 14:02:30,273 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 14:02:30,273 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 14:02:30,273 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 14:02:30,274 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 14:02:30,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 14:02:30,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 14:02:30,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 14:02:30,274 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 14:02:30,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 14:02:30,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 14:02:30,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 14:02:30,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 14:02:30,276 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 14:02:30,276 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 14:02:30,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 14:02:30,276 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2019-12-27 14:02:30,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 14:02:30,277 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 14:02:30,556 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 14:02:30,575 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 14:02:30,578 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 14:02:30,580 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 14:02:30,580 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 14:02:30,581 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i [2019-12-27 14:02:30,647 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c5b63fcf/4aa182b3aef945e09de15bccda858eab/FLAG755542362 [2019-12-27 14:02:31,184 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 14:02:31,185 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i [2019-12-27 14:02:31,205 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c5b63fcf/4aa182b3aef945e09de15bccda858eab/FLAG755542362 [2019-12-27 14:02:31,479 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c5b63fcf/4aa182b3aef945e09de15bccda858eab [2019-12-27 14:02:31,489 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 14:02:31,491 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 14:02:31,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 14:02:31,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 14:02:31,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 14:02:31,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 02:02:31" (1/1) ... [2019-12-27 14:02:31,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a8b6dbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:02:31, skipping insertion in model container [2019-12-27 14:02:31,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 02:02:31" (1/1) ... [2019-12-27 14:02:31,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 14:02:31,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 14:02:32,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 14:02:32,048 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 14:02:32,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 14:02:32,203 INFO L208 MainTranslator]: Completed translation [2019-12-27 14:02:32,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:02:32 WrapperNode [2019-12-27 14:02:32,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 14:02:32,205 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 14:02:32,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 14:02:32,205 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 14:02:32,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:02:32" (1/1) ... [2019-12-27 14:02:32,234 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:02:32" (1/1) ... [2019-12-27 14:02:32,256 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 14:02:32,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 14:02:32,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 14:02:32,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 14:02:32,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:02:32" (1/1) ... [2019-12-27 14:02:32,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:02:32" (1/1) ... [2019-12-27 14:02:32,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:02:32" (1/1) ... [2019-12-27 14:02:32,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:02:32" (1/1) ... [2019-12-27 14:02:32,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:02:32" (1/1) ... [2019-12-27 14:02:32,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:02:32" (1/1) ... [2019-12-27 14:02:32,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:02:32" (1/1) ... [2019-12-27 14:02:32,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 14:02:32,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 14:02:32,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 14:02:32,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 14:02:32,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:02:32" (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 [2019-12-27 14:02:32,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 14:02:32,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-27 14:02:32,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 14:02:32,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 14:02:32,354 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-27 14:02:32,354 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-27 14:02:32,354 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-27 14:02:32,355 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-27 14:02:32,355 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-27 14:02:32,355 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-27 14:02:32,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-27 14:02:32,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 14:02:32,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 14:02:32,357 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-27 14:02:32,776 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 14:02:32,776 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-27 14:02:32,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 02:02:32 BoogieIcfgContainer [2019-12-27 14:02:32,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 14:02:32,779 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 14:02:32,779 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 14:02:32,782 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 14:02:32,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 02:02:31" (1/3) ... [2019-12-27 14:02:32,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319c69a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 02:02:32, skipping insertion in model container [2019-12-27 14:02:32,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:02:32" (2/3) ... [2019-12-27 14:02:32,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319c69a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 02:02:32, skipping insertion in model container [2019-12-27 14:02:32,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 02:02:32" (3/3) ... [2019-12-27 14:02:32,786 INFO L109 eAbstractionObserver]: Analyzing ICFG safe020_tso.opt.i [2019-12-27 14:02:32,796 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 14:02:32,796 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 14:02:32,803 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-27 14:02:32,804 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 14:02:32,832 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:02:32,833 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:02:32,833 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:02:32,833 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:02:32,834 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:02:32,834 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:02:32,835 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:02:32,835 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:02:32,835 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:02:32,835 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:02:32,836 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:02:32,836 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:02:32,836 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:02:32,837 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:02:32,837 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:02:32,837 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:02:32,837 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:02:32,838 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:02:32,842 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:02:32,842 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:02:32,843 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:02:32,843 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:02:32,849 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:02:32,849 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:02:32,849 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:02:32,850 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:02:32,852 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:02:32,853 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:02:32,853 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:02:32,853 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:02:32,870 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-27 14:02:32,892 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 14:02:32,892 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 14:02:32,892 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 14:02:32,892 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 14:02:32,892 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 14:02:32,893 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 14:02:32,893 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 14:02:32,893 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 14:02:32,905 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 62 places, 53 transitions [2019-12-27 14:02:32,997 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1247 states. [2019-12-27 14:02:32,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states. [2019-12-27 14:02:33,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-27 14:02:33,023 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 14:02:33,024 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 14:02:33,025 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 14:02:33,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 14:02:33,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1589731149, now seen corresponding path program 1 times [2019-12-27 14:02:33,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 14:02:33,042 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232387266] [2019-12-27 14:02:33,042 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 14:02:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:02:33,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:02:33,456 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232387266] [2019-12-27 14:02:33,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 14:02:33,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-27 14:02:33,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898248468] [2019-12-27 14:02:33,463 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 14:02:33,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 14:02:33,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 14:02:33,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 14:02:33,482 INFO L87 Difference]: Start difference. First operand 1247 states. Second operand 4 states. [2019-12-27 14:02:33,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 14:02:33,606 INFO L93 Difference]: Finished difference Result 1294 states and 3960 transitions. [2019-12-27 14:02:33,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 14:02:33,609 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2019-12-27 14:02:33,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 14:02:33,634 INFO L225 Difference]: With dead ends: 1294 [2019-12-27 14:02:33,634 INFO L226 Difference]: Without dead ends: 600 [2019-12-27 14:02:33,636 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-27 14:02:33,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2019-12-27 14:02:33,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600. [2019-12-27 14:02:33,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2019-12-27 14:02:33,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 1775 transitions. [2019-12-27 14:02:33,769 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 1775 transitions. Word has length 30 [2019-12-27 14:02:33,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 14:02:33,769 INFO L462 AbstractCegarLoop]: Abstraction has 600 states and 1775 transitions. [2019-12-27 14:02:33,770 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 14:02:33,770 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 1775 transitions. [2019-12-27 14:02:33,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-27 14:02:33,775 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 14:02:33,775 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 14:02:33,776 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 14:02:33,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 14:02:33,776 INFO L82 PathProgramCache]: Analyzing trace with hash 227019057, now seen corresponding path program 1 times [2019-12-27 14:02:33,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 14:02:33,782 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259106262] [2019-12-27 14:02:33,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 14:02:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:02:33,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:02:33,987 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259106262] [2019-12-27 14:02:33,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 14:02:33,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-27 14:02:33,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318801957] [2019-12-27 14:02:33,990 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 14:02:33,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 14:02:33,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 14:02:33,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-27 14:02:33,992 INFO L87 Difference]: Start difference. First operand 600 states and 1775 transitions. Second operand 5 states. [2019-12-27 14:02:34,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 14:02:34,094 INFO L93 Difference]: Finished difference Result 600 states and 1694 transitions. [2019-12-27 14:02:34,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-27 14:02:34,099 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-12-27 14:02:34,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 14:02:34,109 INFO L225 Difference]: With dead ends: 600 [2019-12-27 14:02:34,110 INFO L226 Difference]: Without dead ends: 537 [2019-12-27 14:02:34,118 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-27 14:02:34,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2019-12-27 14:02:34,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2019-12-27 14:02:34,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2019-12-27 14:02:34,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 1544 transitions. [2019-12-27 14:02:34,167 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 1544 transitions. Word has length 31 [2019-12-27 14:02:34,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 14:02:34,167 INFO L462 AbstractCegarLoop]: Abstraction has 537 states and 1544 transitions. [2019-12-27 14:02:34,168 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 14:02:34,168 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 1544 transitions. [2019-12-27 14:02:34,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-12-27 14:02:34,170 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 14:02:34,170 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 14:02:34,171 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 14:02:34,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 14:02:34,171 INFO L82 PathProgramCache]: Analyzing trace with hash -524737327, now seen corresponding path program 1 times [2019-12-27 14:02:34,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 14:02:34,171 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924007553] [2019-12-27 14:02:34,172 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 14:02:34,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:02:34,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:02:34,296 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924007553] [2019-12-27 14:02:34,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 14:02:34,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-27 14:02:34,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167137549] [2019-12-27 14:02:34,297 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-27 14:02:34,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 14:02:34,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-27 14:02:34,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-27 14:02:34,298 INFO L87 Difference]: Start difference. First operand 537 states and 1544 transitions. Second operand 6 states. [2019-12-27 14:02:34,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 14:02:34,386 INFO L93 Difference]: Finished difference Result 402 states and 1058 transitions. [2019-12-27 14:02:34,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-27 14:02:34,387 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2019-12-27 14:02:34,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 14:02:34,389 INFO L225 Difference]: With dead ends: 402 [2019-12-27 14:02:34,390 INFO L226 Difference]: Without dead ends: 348 [2019-12-27 14:02:34,390 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-12-27 14:02:34,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2019-12-27 14:02:34,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 348. [2019-12-27 14:02:34,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2019-12-27 14:02:34,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 914 transitions. [2019-12-27 14:02:34,403 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 914 transitions. Word has length 32 [2019-12-27 14:02:34,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 14:02:34,404 INFO L462 AbstractCegarLoop]: Abstraction has 348 states and 914 transitions. [2019-12-27 14:02:34,404 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-27 14:02:34,404 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 914 transitions. [2019-12-27 14:02:34,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-12-27 14:02:34,405 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 14:02:34,406 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 14:02:34,406 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 14:02:34,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 14:02:34,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1007154836, now seen corresponding path program 1 times [2019-12-27 14:02:34,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 14:02:34,407 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472332301] [2019-12-27 14:02:34,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 14:02:34,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:02:34,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:02:34,586 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472332301] [2019-12-27 14:02:34,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 14:02:34,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-12-27 14:02:34,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164998737] [2019-12-27 14:02:34,587 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-27 14:02:34,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 14:02:34,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-27 14:02:34,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-12-27 14:02:34,588 INFO L87 Difference]: Start difference. First operand 348 states and 914 transitions. Second operand 7 states. [2019-12-27 14:02:34,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 14:02:34,747 INFO L93 Difference]: Finished difference Result 519 states and 1394 transitions. [2019-12-27 14:02:34,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-27 14:02:34,748 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2019-12-27 14:02:34,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 14:02:34,750 INFO L225 Difference]: With dead ends: 519 [2019-12-27 14:02:34,750 INFO L226 Difference]: Without dead ends: 276 [2019-12-27 14:02:34,751 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-12-27 14:02:34,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2019-12-27 14:02:34,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2019-12-27 14:02:34,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2019-12-27 14:02:34,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 725 transitions. [2019-12-27 14:02:34,764 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 725 transitions. Word has length 33 [2019-12-27 14:02:34,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 14:02:34,765 INFO L462 AbstractCegarLoop]: Abstraction has 276 states and 725 transitions. [2019-12-27 14:02:34,765 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-27 14:02:34,765 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 725 transitions. [2019-12-27 14:02:34,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-12-27 14:02:34,767 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 14:02:34,767 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 14:02:34,767 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 14:02:34,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 14:02:34,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1391348590, now seen corresponding path program 2 times [2019-12-27 14:02:34,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 14:02:34,768 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427123526] [2019-12-27 14:02:34,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 14:02:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:02:34,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:02:34,919 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427123526] [2019-12-27 14:02:34,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 14:02:34,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-12-27 14:02:34,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853121216] [2019-12-27 14:02:34,921 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-27 14:02:34,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 14:02:34,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-27 14:02:34,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-12-27 14:02:34,922 INFO L87 Difference]: Start difference. First operand 276 states and 725 transitions. Second operand 7 states. [2019-12-27 14:02:35,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 14:02:35,093 INFO L93 Difference]: Finished difference Result 447 states and 1205 transitions. [2019-12-27 14:02:35,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-27 14:02:35,093 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2019-12-27 14:02:35,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 14:02:35,098 INFO L225 Difference]: With dead ends: 447 [2019-12-27 14:02:35,098 INFO L226 Difference]: Without dead ends: 264 [2019-12-27 14:02:35,099 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-12-27 14:02:35,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2019-12-27 14:02:35,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2019-12-27 14:02:35,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2019-12-27 14:02:35,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 695 transitions. [2019-12-27 14:02:35,109 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 695 transitions. Word has length 33 [2019-12-27 14:02:35,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 14:02:35,110 INFO L462 AbstractCegarLoop]: Abstraction has 264 states and 695 transitions. [2019-12-27 14:02:35,110 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-27 14:02:35,110 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 695 transitions. [2019-12-27 14:02:35,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-12-27 14:02:35,112 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 14:02:35,117 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 14:02:35,117 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 14:02:35,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 14:02:35,118 INFO L82 PathProgramCache]: Analyzing trace with hash 304903326, now seen corresponding path program 3 times [2019-12-27 14:02:35,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 14:02:35,121 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465141636] [2019-12-27 14:02:35,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 14:02:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:02:35,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:02:35,260 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465141636] [2019-12-27 14:02:35,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 14:02:35,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-12-27 14:02:35,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605990996] [2019-12-27 14:02:35,261 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-27 14:02:35,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 14:02:35,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-27 14:02:35,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-12-27 14:02:35,262 INFO L87 Difference]: Start difference. First operand 264 states and 695 transitions. Second operand 7 states. [2019-12-27 14:02:35,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 14:02:35,383 INFO L93 Difference]: Finished difference Result 210 states and 533 transitions. [2019-12-27 14:02:35,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-27 14:02:35,383 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2019-12-27 14:02:35,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 14:02:35,384 INFO L225 Difference]: With dead ends: 210 [2019-12-27 14:02:35,384 INFO L226 Difference]: Without dead ends: 0 [2019-12-27 14:02:35,384 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-12-27 14:02:35,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-27 14:02:35,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-27 14:02:35,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-27 14:02:35,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-27 14:02:35,385 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2019-12-27 14:02:35,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 14:02:35,386 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-27 14:02:35,386 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-27 14:02:35,386 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-27 14:02:35,386 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-27 14:02:35,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 02:02:35 BasicIcfg [2019-12-27 14:02:35,396 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 14:02:35,401 INFO L168 Benchmark]: Toolchain (without parser) took 3907.44 ms. Allocated memory was 137.4 MB in the beginning and 253.8 MB in the end (delta: 116.4 MB). Free memory was 98.9 MB in the beginning and 173.1 MB in the end (delta: -74.2 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. [2019-12-27 14:02:35,403 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 137.4 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-12-27 14:02:35,410 INFO L168 Benchmark]: CACSL2BoogieTranslator took 712.52 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 98.7 MB in the beginning and 158.6 MB in the end (delta: -60.0 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2019-12-27 14:02:35,411 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.09 ms. Allocated memory is still 201.9 MB. Free memory was 158.6 MB in the beginning and 156.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-27 14:02:35,412 INFO L168 Benchmark]: Boogie Preprocessor took 27.99 ms. Allocated memory is still 201.9 MB. Free memory was 156.6 MB in the beginning and 155.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-27 14:02:35,413 INFO L168 Benchmark]: RCFGBuilder took 493.04 ms. Allocated memory is still 201.9 MB. Free memory was 155.3 MB in the beginning and 135.1 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2019-12-27 14:02:35,414 INFO L168 Benchmark]: TraceAbstraction took 2617.21 ms. Allocated memory was 201.9 MB in the beginning and 253.8 MB in the end (delta: 51.9 MB). Free memory was 134.5 MB in the beginning and 173.1 MB in the end (delta: -38.7 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2019-12-27 14:02:35,426 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 137.4 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 712.52 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 98.7 MB in the beginning and 158.6 MB in the end (delta: -60.0 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.09 ms. Allocated memory is still 201.9 MB. Free memory was 158.6 MB in the beginning and 156.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.99 ms. Allocated memory is still 201.9 MB. Free memory was 156.6 MB in the beginning and 155.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 493.04 ms. Allocated memory is still 201.9 MB. Free memory was 155.3 MB in the beginning and 135.1 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2617.21 ms. Allocated memory was 201.9 MB in the beginning and 253.8 MB in the end (delta: 51.9 MB). Free memory was 134.5 MB in the beginning and 173.1 MB in the end (delta: -38.7 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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, 53 locations, 1 error locations. Result: SAFE, OverallTime: 2.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 275 SDtfs, 383 SDslu, 714 SDs, 0 SdLazy, 121 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1247occurred 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, 0.9s InterpolantComputationTime, 192 NumberOfCodeBlocks, 192 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 186 ConstructedInterpolants, 0 QuantifiedInterpolants, 17818 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...