/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-26 23:56:09,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-26 23:56:09,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-26 23:56:09,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-26 23:56:09,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-26 23:56:09,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-26 23:56:09,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-26 23:56:09,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-26 23:56:09,225 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-26 23:56:09,226 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-26 23:56:09,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-26 23:56:09,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-26 23:56:09,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-26 23:56:09,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-26 23:56:09,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-26 23:56:09,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-26 23:56:09,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-26 23:56:09,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-26 23:56:09,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-26 23:56:09,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-26 23:56:09,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-26 23:56:09,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-26 23:56:09,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-26 23:56:09,241 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-26 23:56:09,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-26 23:56:09,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-26 23:56:09,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-26 23:56:09,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-26 23:56:09,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-26 23:56:09,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-26 23:56:09,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-26 23:56:09,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-26 23:56:09,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-26 23:56:09,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-26 23:56:09,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-26 23:56:09,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-26 23:56:09,253 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-26 23:56:09,274 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-26 23:56:09,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-26 23:56:09,278 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-26 23:56:09,278 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-26 23:56:09,278 INFO L138 SettingsManager]: * Use SBE=true [2019-12-26 23:56:09,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-26 23:56:09,279 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-26 23:56:09,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-26 23:56:09,279 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-26 23:56:09,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-26 23:56:09,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-26 23:56:09,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-26 23:56:09,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-26 23:56:09,281 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-26 23:56:09,282 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-26 23:56:09,282 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-26 23:56:09,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-26 23:56:09,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-26 23:56:09,282 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-26 23:56:09,283 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-26 23:56:09,283 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-26 23:56:09,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-26 23:56:09,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-26 23:56:09,284 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-26 23:56:09,284 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-26 23:56:09,284 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-26 23:56:09,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-26 23:56:09,284 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-26 23:56:09,285 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-26 23:56:09,285 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-26 23:56:09,564 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-26 23:56:09,575 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-26 23:56:09,580 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-26 23:56:09,582 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-26 23:56:09,582 INFO L275 PluginConnector]: CDTParser initialized [2019-12-26 23:56:09,583 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i [2019-12-26 23:56:09,654 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a818ae11d/50c9950d93574f30bf64c705ed5a96ae/FLAG80bdec54c [2019-12-26 23:56:10,234 INFO L306 CDTParser]: Found 1 translation units. [2019-12-26 23:56:10,235 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i [2019-12-26 23:56:10,255 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a818ae11d/50c9950d93574f30bf64c705ed5a96ae/FLAG80bdec54c [2019-12-26 23:56:10,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a818ae11d/50c9950d93574f30bf64c705ed5a96ae [2019-12-26 23:56:10,576 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-26 23:56:10,578 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-26 23:56:10,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-26 23:56:10,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-26 23:56:10,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-26 23:56:10,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.12 11:56:10" (1/1) ... [2019-12-26 23:56:10,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41de4019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 11:56:10, skipping insertion in model container [2019-12-26 23:56:10,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.12 11:56:10" (1/1) ... [2019-12-26 23:56:10,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-26 23:56:10,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-26 23:56:11,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-26 23:56:11,069 INFO L203 MainTranslator]: Completed pre-run [2019-12-26 23:56:11,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-26 23:56:11,203 INFO L208 MainTranslator]: Completed translation [2019-12-26 23:56:11,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 11:56:11 WrapperNode [2019-12-26 23:56:11,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-26 23:56:11,205 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-26 23:56:11,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-26 23:56:11,205 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-26 23:56:11,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 11:56:11" (1/1) ... [2019-12-26 23:56:11,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 11:56:11" (1/1) ... [2019-12-26 23:56:11,253 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-26 23:56:11,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-26 23:56:11,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-26 23:56:11,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-26 23:56:11,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 11:56:11" (1/1) ... [2019-12-26 23:56:11,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 11:56:11" (1/1) ... [2019-12-26 23:56:11,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 11:56:11" (1/1) ... [2019-12-26 23:56:11,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 11:56:11" (1/1) ... [2019-12-26 23:56:11,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 11:56:11" (1/1) ... [2019-12-26 23:56:11,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 11:56:11" (1/1) ... [2019-12-26 23:56:11,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 11:56:11" (1/1) ... [2019-12-26 23:56:11,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-26 23:56:11,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-26 23:56:11,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-26 23:56:11,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-26 23:56:11,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 11:56:11" (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 [2019-12-26 23:56:11,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-26 23:56:11,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-26 23:56:11,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-26 23:56:11,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-26 23:56:11,340 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-26 23:56:11,340 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-26 23:56:11,341 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-26 23:56:11,341 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-26 23:56:11,341 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-26 23:56:11,341 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-26 23:56:11,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-26 23:56:11,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-26 23:56:11,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-26 23:56:11,343 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-26 23:56:11,678 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-26 23:56:11,679 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-26 23:56:11,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.12 11:56:11 BoogieIcfgContainer [2019-12-26 23:56:11,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-26 23:56:11,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-26 23:56:11,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-26 23:56:11,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-26 23:56:11,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.12 11:56:10" (1/3) ... [2019-12-26 23:56:11,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ec5444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.12 11:56:11, skipping insertion in model container [2019-12-26 23:56:11,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 11:56:11" (2/3) ... [2019-12-26 23:56:11,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ec5444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.12 11:56:11, skipping insertion in model container [2019-12-26 23:56:11,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.12 11:56:11" (3/3) ... [2019-12-26 23:56:11,690 INFO L109 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc.i [2019-12-26 23:56:11,701 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-26 23:56:11,701 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-26 23:56:11,710 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-26 23:56:11,711 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-26 23:56:11,740 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-26 23:56:11,740 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-26 23:56:11,740 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-26 23:56:11,744 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-26 23:56:11,745 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-26 23:56:11,745 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-26 23:56:11,746 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-26 23:56:11,746 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-26 23:56:11,746 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-26 23:56:11,746 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-26 23:56:11,749 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-26 23:56:11,749 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-26 23:56:11,750 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-26 23:56:11,750 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-26 23:56:11,751 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-26 23:56:11,751 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-26 23:56:11,751 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-26 23:56:11,752 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-26 23:56:11,758 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-26 23:56:11,758 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-26 23:56:11,759 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-26 23:56:11,759 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-26 23:56:11,766 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-26 23:56:11,767 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-26 23:56:11,767 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-26 23:56:11,768 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-26 23:56:11,770 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-26 23:56:11,770 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-26 23:56:11,771 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-26 23:56:11,771 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-26 23:56:11,786 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-26 23:56:11,807 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-26 23:56:11,807 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-26 23:56:11,807 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-26 23:56:11,808 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-26 23:56:11,808 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-26 23:56:11,808 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-26 23:56:11,808 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-26 23:56:11,808 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-26 23:56:11,822 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 53 transitions [2019-12-26 23:56:11,824 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions [2019-12-26 23:56:11,869 INFO L132 PetriNetUnfolder]: 1/50 cut-off events. [2019-12-26 23:56:11,869 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-26 23:56:11,879 INFO L76 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 50 events. 1/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 0/48 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-26 23:56:11,883 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions [2019-12-26 23:56:11,918 INFO L132 PetriNetUnfolder]: 1/50 cut-off events. [2019-12-26 23:56:11,918 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-26 23:56:11,924 INFO L76 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 50 events. 1/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 0/48 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-26 23:56:11,926 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-26 23:56:11,928 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-26 23:56:13,382 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-12-26 23:56:13,524 INFO L206 etLargeBlockEncoding]: Checked pairs total: 479 [2019-12-26 23:56:13,524 INFO L214 etLargeBlockEncoding]: Total number of compositions: 45 [2019-12-26 23:56:13,528 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-12-26 23:56:13,538 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-12-26 23:56:13,541 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-12-26 23:56:13,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-26 23:56:13,548 INFO L403 BasicCegarLoop]: Found error trace [2019-12-26 23:56:13,549 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-26 23:56:13,549 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-26 23:56:13,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-26 23:56:13,555 INFO L82 PathProgramCache]: Analyzing trace with hash 492740166, now seen corresponding path program 1 times [2019-12-26 23:56:13,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-26 23:56:13,565 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919502647] [2019-12-26 23:56:13,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-26 23:56:13,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-26 23:56:13,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-26 23:56:13,771 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919502647] [2019-12-26 23:56:13,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-26 23:56:13,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-26 23:56:13,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107457497] [2019-12-26 23:56:13,778 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-26 23:56:13,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-26 23:56:13,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-26 23:56:13,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-26 23:56:13,796 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2019-12-26 23:56:13,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-26 23:56:13,831 INFO L93 Difference]: Finished difference Result 44 states and 89 transitions. [2019-12-26 23:56:13,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-26 23:56:13,833 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-26 23:56:13,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-26 23:56:13,845 INFO L225 Difference]: With dead ends: 44 [2019-12-26 23:56:13,845 INFO L226 Difference]: Without dead ends: 36 [2019-12-26 23:56:13,847 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-26 23:56:13,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-26 23:56:13,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-26 23:56:13,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-26 23:56:13,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 69 transitions. [2019-12-26 23:56:13,881 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 69 transitions. Word has length 8 [2019-12-26 23:56:13,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-26 23:56:13,882 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 69 transitions. [2019-12-26 23:56:13,882 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-26 23:56:13,882 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 69 transitions. [2019-12-26 23:56:13,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-26 23:56:13,883 INFO L403 BasicCegarLoop]: Found error trace [2019-12-26 23:56:13,883 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-26 23:56:13,884 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-26 23:56:13,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-26 23:56:13,884 INFO L82 PathProgramCache]: Analyzing trace with hash 709143484, now seen corresponding path program 1 times [2019-12-26 23:56:13,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-26 23:56:13,885 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286090426] [2019-12-26 23:56:13,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-26 23:56:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-26 23:56:13,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-26 23:56:13,982 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286090426] [2019-12-26 23:56:13,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-26 23:56:13,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-26 23:56:13,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355591906] [2019-12-26 23:56:13,985 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-26 23:56:13,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-26 23:56:13,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-26 23:56:13,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-26 23:56:13,987 INFO L87 Difference]: Start difference. First operand 36 states and 69 transitions. Second operand 3 states. [2019-12-26 23:56:13,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-26 23:56:13,995 INFO L93 Difference]: Finished difference Result 34 states and 64 transitions. [2019-12-26 23:56:13,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-26 23:56:13,995 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-26 23:56:13,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-26 23:56:13,996 INFO L225 Difference]: With dead ends: 34 [2019-12-26 23:56:13,997 INFO L226 Difference]: Without dead ends: 34 [2019-12-26 23:56:13,997 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-26 23:56:13,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-26 23:56:14,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-26 23:56:14,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-26 23:56:14,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 64 transitions. [2019-12-26 23:56:14,009 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 64 transitions. Word has length 9 [2019-12-26 23:56:14,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-26 23:56:14,011 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 64 transitions. [2019-12-26 23:56:14,012 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-26 23:56:14,012 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 64 transitions. [2019-12-26 23:56:14,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-26 23:56:14,013 INFO L403 BasicCegarLoop]: Found error trace [2019-12-26 23:56:14,013 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-26 23:56:14,014 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-26 23:56:14,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-26 23:56:14,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1904869198, now seen corresponding path program 1 times [2019-12-26 23:56:14,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-26 23:56:14,015 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135462068] [2019-12-26 23:56:14,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-26 23:56:14,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-26 23:56:14,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-26 23:56:14,070 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135462068] [2019-12-26 23:56:14,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-26 23:56:14,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-26 23:56:14,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142966712] [2019-12-26 23:56:14,071 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-26 23:56:14,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-26 23:56:14,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-26 23:56:14,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-26 23:56:14,072 INFO L87 Difference]: Start difference. First operand 34 states and 64 transitions. Second operand 3 states. [2019-12-26 23:56:14,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-26 23:56:14,093 INFO L93 Difference]: Finished difference Result 36 states and 63 transitions. [2019-12-26 23:56:14,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-26 23:56:14,094 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-26 23:56:14,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-26 23:56:14,095 INFO L225 Difference]: With dead ends: 36 [2019-12-26 23:56:14,095 INFO L226 Difference]: Without dead ends: 22 [2019-12-26 23:56:14,095 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-26 23:56:14,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-12-26 23:56:14,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-12-26 23:56:14,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-12-26 23:56:14,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 33 transitions. [2019-12-26 23:56:14,099 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 33 transitions. Word has length 9 [2019-12-26 23:56:14,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-26 23:56:14,099 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 33 transitions. [2019-12-26 23:56:14,100 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-26 23:56:14,100 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 33 transitions. [2019-12-26 23:56:14,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-26 23:56:14,101 INFO L403 BasicCegarLoop]: Found error trace [2019-12-26 23:56:14,102 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-26 23:56:14,102 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-26 23:56:14,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-26 23:56:14,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1078655690, now seen corresponding path program 1 times [2019-12-26 23:56:14,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-26 23:56:14,103 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237831256] [2019-12-26 23:56:14,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-26 23:56:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-26 23:56:14,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-26 23:56:14,194 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237831256] [2019-12-26 23:56:14,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-26 23:56:14,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-26 23:56:14,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896842205] [2019-12-26 23:56:14,195 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-26 23:56:14,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-26 23:56:14,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-26 23:56:14,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-26 23:56:14,196 INFO L87 Difference]: Start difference. First operand 22 states and 33 transitions. Second operand 4 states. [2019-12-26 23:56:14,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-26 23:56:14,223 INFO L93 Difference]: Finished difference Result 25 states and 35 transitions. [2019-12-26 23:56:14,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-26 23:56:14,224 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-26 23:56:14,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-26 23:56:14,225 INFO L225 Difference]: With dead ends: 25 [2019-12-26 23:56:14,225 INFO L226 Difference]: Without dead ends: 17 [2019-12-26 23:56:14,225 INFO L631 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 [2019-12-26 23:56:14,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-26 23:56:14,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-12-26 23:56:14,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-26 23:56:14,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-12-26 23:56:14,230 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2019-12-26 23:56:14,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-26 23:56:14,230 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-12-26 23:56:14,231 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-26 23:56:14,231 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-12-26 23:56:14,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-26 23:56:14,231 INFO L403 BasicCegarLoop]: Found error trace [2019-12-26 23:56:14,231 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-26 23:56:14,232 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-26 23:56:14,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-26 23:56:14,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1824813225, now seen corresponding path program 1 times [2019-12-26 23:56:14,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-26 23:56:14,232 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495724036] [2019-12-26 23:56:14,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-26 23:56:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-26 23:56:14,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-26 23:56:14,299 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495724036] [2019-12-26 23:56:14,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-26 23:56:14,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-26 23:56:14,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303480610] [2019-12-26 23:56:14,300 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-26 23:56:14,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-26 23:56:14,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-26 23:56:14,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-26 23:56:14,303 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 4 states. [2019-12-26 23:56:14,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-26 23:56:14,322 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2019-12-26 23:56:14,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-26 23:56:14,322 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-26 23:56:14,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-26 23:56:14,322 INFO L225 Difference]: With dead ends: 16 [2019-12-26 23:56:14,322 INFO L226 Difference]: Without dead ends: 0 [2019-12-26 23:56:14,324 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-26 23:56:14,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-26 23:56:14,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-26 23:56:14,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-26 23:56:14,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-26 23:56:14,325 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-26 23:56:14,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-26 23:56:14,325 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-26 23:56:14,325 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-26 23:56:14,325 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-26 23:56:14,325 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-26 23:56:14,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.12 11:56:14 BasicIcfg [2019-12-26 23:56:14,330 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-26 23:56:14,331 INFO L168 Benchmark]: Toolchain (without parser) took 3753.40 ms. Allocated memory was 145.8 MB in the beginning and 245.4 MB in the end (delta: 99.6 MB). Free memory was 101.1 MB in the beginning and 143.4 MB in the end (delta: -42.3 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB. [2019-12-26 23:56:14,332 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 145.8 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-12-26 23:56:14,333 INFO L168 Benchmark]: CACSL2BoogieTranslator took 623.16 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 100.9 MB in the beginning and 160.1 MB in the end (delta: -59.2 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. [2019-12-26 23:56:14,334 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.93 ms. Allocated memory is still 202.9 MB. Free memory was 160.1 MB in the beginning and 157.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2019-12-26 23:56:14,335 INFO L168 Benchmark]: Boogie Preprocessor took 26.86 ms. Allocated memory is still 202.9 MB. Free memory was 157.6 MB in the beginning and 156.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-26 23:56:14,336 INFO L168 Benchmark]: RCFGBuilder took 399.18 ms. Allocated memory is still 202.9 MB. Free memory was 156.3 MB in the beginning and 136.2 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2019-12-26 23:56:14,337 INFO L168 Benchmark]: TraceAbstraction took 2648.45 ms. Allocated memory was 202.9 MB in the beginning and 245.4 MB in the end (delta: 42.5 MB). Free memory was 135.6 MB in the beginning and 143.4 MB in the end (delta: -7.8 MB). Peak memory consumption was 34.7 MB. Max. memory is 7.1 GB. [2019-12-26 23:56:14,341 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 145.8 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 623.16 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 100.9 MB in the beginning and 160.1 MB in the end (delta: -59.2 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.93 ms. Allocated memory is still 202.9 MB. Free memory was 160.1 MB in the beginning and 157.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.86 ms. Allocated memory is still 202.9 MB. Free memory was 157.6 MB in the beginning and 156.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 399.18 ms. Allocated memory is still 202.9 MB. Free memory was 156.3 MB in the beginning and 136.2 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2648.45 ms. Allocated memory was 202.9 MB in the beginning and 245.4 MB in the end (delta: 42.5 MB). Free memory was 135.6 MB in the beginning and 143.4 MB in the end (delta: -7.8 MB). Peak memory consumption was 34.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 62 ProgramPointsBefore, 21 ProgramPointsAfterwards, 53 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 244 VarBasedMoverChecksPositive, 16 VarBasedMoverChecksNegative, 3 SemBasedMoverChecksPositive, 15 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 479 CheckedPairsTotal, 45 TotalNumberOfCompositions - 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: 2.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 57 SDtfs, 16 SDslu, 38 SDs, 0 SdLazy, 24 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 898 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...