/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-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe037_power.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 23:09:40,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 23:09:40,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 23:09:40,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 23:09:40,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 23:09:40,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 23:09:40,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 23:09:40,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 23:09:40,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 23:09:40,121 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 23:09:40,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 23:09:40,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 23:09:40,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 23:09:40,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 23:09:40,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 23:09:40,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 23:09:40,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 23:09:40,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 23:09:40,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 23:09:40,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 23:09:40,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 23:09:40,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 23:09:40,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 23:09:40,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 23:09:40,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-18 23:09:40,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-18 23:09:40,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-18 23:09:40,155 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-18 23:09:40,156 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-18 23:09:40,157 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-18 23:09:40,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-18 23:09:40,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-18 23:09:40,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-18 23:09:40,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-18 23:09:40,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-18 23:09:40,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-18 23:09:40,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-18 23:09:40,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-18 23:09:40,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 23:09:40,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 23:09:40,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 23:09:40,165 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-VariableLbe.epf [2019-12-18 23:09:40,178 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 23:09:40,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 23:09:40,180 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 23:09:40,180 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 23:09:40,180 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 23:09:40,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 23:09:40,181 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 23:09:40,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 23:09:40,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 23:09:40,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 23:09:40,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 23:09:40,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 23:09:40,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 23:09:40,182 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 23:09:40,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 23:09:40,182 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 23:09:40,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 23:09:40,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 23:09:40,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 23:09:40,183 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 23:09:40,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 23:09:40,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 23:09:40,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 23:09:40,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 23:09:40,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 23:09:40,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 23:09:40,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 23:09:40,185 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-18 23:09:40,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 23:09:40,185 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 23:09:40,482 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 23:09:40,498 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 23:09:40,502 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 23:09:40,505 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 23:09:40,505 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 23:09:40,506 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037_power.opt.i [2019-12-18 23:09:40,578 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/593f2686b/ca19f2bd43a94115a20489e71dcdac34/FLAGdb995f97f [2019-12-18 23:09:41,060 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 23:09:41,061 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_power.opt.i [2019-12-18 23:09:41,082 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/593f2686b/ca19f2bd43a94115a20489e71dcdac34/FLAGdb995f97f [2019-12-18 23:09:41,396 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/593f2686b/ca19f2bd43a94115a20489e71dcdac34 [2019-12-18 23:09:41,406 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 23:09:41,407 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 23:09:41,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 23:09:41,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 23:09:41,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 23:09:41,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:09:41" (1/1) ... [2019-12-18 23:09:41,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c011c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:09:41, skipping insertion in model container [2019-12-18 23:09:41,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:09:41" (1/1) ... [2019-12-18 23:09:41,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 23:09:41,493 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 23:09:42,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 23:09:42,028 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 23:09:42,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 23:09:42,188 INFO L208 MainTranslator]: Completed translation [2019-12-18 23:09:42,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:09:42 WrapperNode [2019-12-18 23:09:42,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 23:09:42,190 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 23:09:42,190 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 23:09:42,190 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 23:09:42,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:09:42" (1/1) ... [2019-12-18 23:09:42,217 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:09:42" (1/1) ... [2019-12-18 23:09:42,242 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 23:09:42,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 23:09:42,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 23:09:42,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 23:09:42,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:09:42" (1/1) ... [2019-12-18 23:09:42,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:09:42" (1/1) ... [2019-12-18 23:09:42,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:09:42" (1/1) ... [2019-12-18 23:09:42,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:09:42" (1/1) ... [2019-12-18 23:09:42,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:09:42" (1/1) ... [2019-12-18 23:09:42,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:09:42" (1/1) ... [2019-12-18 23:09:42,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:09:42" (1/1) ... [2019-12-18 23:09:42,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 23:09:42,271 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 23:09:42,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 23:09:42,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 23:09:42,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:09:42" (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 [2019-12-18 23:09:42,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 23:09:42,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-18 23:09:42,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 23:09:42,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 23:09:42,358 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-18 23:09:42,359 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-18 23:09:42,359 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-18 23:09:42,360 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-18 23:09:42,360 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-18 23:09:42,361 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-18 23:09:42,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-18 23:09:42,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 23:09:42,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 23:09:42,363 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-18 23:09:42,805 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 23:09:42,806 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-18 23:09:42,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:09:42 BoogieIcfgContainer [2019-12-18 23:09:42,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 23:09:42,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 23:09:42,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 23:09:42,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 23:09:42,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 11:09:41" (1/3) ... [2019-12-18 23:09:42,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56997db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:09:42, skipping insertion in model container [2019-12-18 23:09:42,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:09:42" (2/3) ... [2019-12-18 23:09:42,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56997db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:09:42, skipping insertion in model container [2019-12-18 23:09:42,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:09:42" (3/3) ... [2019-12-18 23:09:42,817 INFO L109 eAbstractionObserver]: Analyzing ICFG safe037_power.opt.i [2019-12-18 23:09:42,827 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 23:09:42,827 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 23:09:42,834 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-18 23:09:42,835 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 23:09:42,864 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:42,864 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:42,864 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:42,865 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:42,865 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:42,865 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:42,866 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:42,866 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:42,866 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:42,867 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:42,867 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:42,867 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:42,868 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:42,868 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:42,868 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:42,868 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:42,869 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:42,869 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:42,873 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:42,873 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:42,874 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:42,874 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:42,880 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:42,880 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:42,880 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:42,881 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:42,883 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:42,884 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:42,884 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:42,884 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:42,904 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-18 23:09:42,920 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 23:09:42,921 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 23:09:42,921 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 23:09:42,921 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 23:09:42,921 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 23:09:42,921 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 23:09:42,921 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 23:09:42,922 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 23:09:42,934 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 55 transitions [2019-12-18 23:09:42,937 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions [2019-12-18 23:09:42,976 INFO L126 PetriNetUnfolder]: 1/52 cut-off events. [2019-12-18 23:09:42,976 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:09:42,983 INFO L76 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 52 events. 1/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 9/59 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-18 23:09:42,986 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions [2019-12-18 23:09:43,003 INFO L126 PetriNetUnfolder]: 1/52 cut-off events. [2019-12-18 23:09:43,004 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:09:43,005 INFO L76 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 52 events. 1/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 9/59 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-18 23:09:43,007 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-18 23:09:43,008 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 23:09:43,212 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2019-12-18 23:09:44,513 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-12-18 23:09:44,598 INFO L206 etLargeBlockEncoding]: Checked pairs total: 425 [2019-12-18 23:09:44,601 INFO L214 etLargeBlockEncoding]: Total number of compositions: 45 [2019-12-18 23:09:44,606 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 17 transitions [2019-12-18 23:09:44,620 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 54 states. [2019-12-18 23:09:44,622 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2019-12-18 23:09:44,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-18 23:09:44,633 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:09:44,634 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:09:44,634 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:09:44,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:09:44,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1086085239, now seen corresponding path program 1 times [2019-12-18 23:09:44,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:09:44,651 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619009598] [2019-12-18 23:09:44,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:09:44,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:09:44,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:09:44,932 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619009598] [2019-12-18 23:09:44,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:09:44,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 23:09:44,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693009558] [2019-12-18 23:09:44,938 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 23:09:44,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:09:44,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 23:09:44,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 23:09:44,956 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2019-12-18 23:09:45,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:09:45,016 INFO L93 Difference]: Finished difference Result 58 states and 113 transitions. [2019-12-18 23:09:45,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 23:09:45,018 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-18 23:09:45,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:09:45,030 INFO L225 Difference]: With dead ends: 58 [2019-12-18 23:09:45,030 INFO L226 Difference]: Without dead ends: 36 [2019-12-18 23:09:45,031 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 [2019-12-18 23:09:45,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-18 23:09:45,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-18 23:09:45,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-18 23:09:45,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 68 transitions. [2019-12-18 23:09:45,069 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 68 transitions. Word has length 8 [2019-12-18 23:09:45,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:09:45,070 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 68 transitions. [2019-12-18 23:09:45,070 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 23:09:45,070 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 68 transitions. [2019-12-18 23:09:45,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 23:09:45,071 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:09:45,071 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:09:45,071 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:09:45,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:09:45,072 INFO L82 PathProgramCache]: Analyzing trace with hash -744608244, now seen corresponding path program 1 times [2019-12-18 23:09:45,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:09:45,072 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137863348] [2019-12-18 23:09:45,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:09:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:09:45,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:09:45,213 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137863348] [2019-12-18 23:09:45,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:09:45,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 23:09:45,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312519911] [2019-12-18 23:09:45,216 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 23:09:45,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:09:45,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 23:09:45,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 23:09:45,217 INFO L87 Difference]: Start difference. First operand 36 states and 68 transitions. Second operand 5 states. [2019-12-18 23:09:45,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:09:45,274 INFO L93 Difference]: Finished difference Result 37 states and 62 transitions. [2019-12-18 23:09:45,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 23:09:45,274 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-12-18 23:09:45,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:09:45,275 INFO L225 Difference]: With dead ends: 37 [2019-12-18 23:09:45,276 INFO L226 Difference]: Without dead ends: 30 [2019-12-18 23:09:45,276 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-18 23:09:45,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-12-18 23:09:45,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-12-18 23:09:45,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-18 23:09:45,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 50 transitions. [2019-12-18 23:09:45,282 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 50 transitions. Word has length 9 [2019-12-18 23:09:45,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:09:45,283 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 50 transitions. [2019-12-18 23:09:45,283 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 23:09:45,283 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 50 transitions. [2019-12-18 23:09:45,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 23:09:45,284 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:09:45,284 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:09:45,284 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:09:45,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:09:45,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1607968112, now seen corresponding path program 1 times [2019-12-18 23:09:45,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:09:45,285 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204238270] [2019-12-18 23:09:45,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:09:45,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:09:45,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:09:45,368 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204238270] [2019-12-18 23:09:45,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:09:45,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 23:09:45,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607658246] [2019-12-18 23:09:45,369 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 23:09:45,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:09:45,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 23:09:45,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 23:09:45,370 INFO L87 Difference]: Start difference. First operand 30 states and 50 transitions. Second operand 4 states. [2019-12-18 23:09:45,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:09:45,390 INFO L93 Difference]: Finished difference Result 35 states and 54 transitions. [2019-12-18 23:09:45,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 23:09:45,392 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-18 23:09:45,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:09:45,393 INFO L225 Difference]: With dead ends: 35 [2019-12-18 23:09:45,393 INFO L226 Difference]: Without dead ends: 31 [2019-12-18 23:09:45,393 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 [2019-12-18 23:09:45,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-12-18 23:09:45,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2019-12-18 23:09:45,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-18 23:09:45,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 47 transitions. [2019-12-18 23:09:45,401 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 47 transitions. Word has length 10 [2019-12-18 23:09:45,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:09:45,401 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 47 transitions. [2019-12-18 23:09:45,401 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 23:09:45,402 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 47 transitions. [2019-12-18 23:09:45,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 23:09:45,402 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:09:45,402 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:09:45,403 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:09:45,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:09:45,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1607961385, now seen corresponding path program 1 times [2019-12-18 23:09:45,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:09:45,405 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567579767] [2019-12-18 23:09:45,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:09:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:09:45,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:09:45,521 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567579767] [2019-12-18 23:09:45,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:09:45,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-18 23:09:45,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634666760] [2019-12-18 23:09:45,522 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-18 23:09:45,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:09:45,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-18 23:09:45,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-18 23:09:45,523 INFO L87 Difference]: Start difference. First operand 30 states and 47 transitions. Second operand 6 states. [2019-12-18 23:09:45,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:09:45,600 INFO L93 Difference]: Finished difference Result 28 states and 41 transitions. [2019-12-18 23:09:45,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-18 23:09:45,601 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-18 23:09:45,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:09:45,601 INFO L225 Difference]: With dead ends: 28 [2019-12-18 23:09:45,601 INFO L226 Difference]: Without dead ends: 16 [2019-12-18 23:09:45,602 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-12-18 23:09:45,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-18 23:09:45,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-18 23:09:45,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-18 23:09:45,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-12-18 23:09:45,605 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 10 [2019-12-18 23:09:45,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:09:45,605 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-12-18 23:09:45,606 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-18 23:09:45,606 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-12-18 23:09:45,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 23:09:45,606 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:09:45,606 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:09:45,607 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:09:45,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:09:45,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1627425577, now seen corresponding path program 1 times [2019-12-18 23:09:45,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:09:45,608 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576217883] [2019-12-18 23:09:45,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:09:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:09:45,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:09:45,645 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576217883] [2019-12-18 23:09:45,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:09:45,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 23:09:45,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237418965] [2019-12-18 23:09:45,646 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 23:09:45,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:09:45,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 23:09:45,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 23:09:45,647 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2019-12-18 23:09:45,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:09:45,663 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2019-12-18 23:09:45,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 23:09:45,663 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-18 23:09:45,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:09:45,664 INFO L225 Difference]: With dead ends: 19 [2019-12-18 23:09:45,664 INFO L226 Difference]: Without dead ends: 14 [2019-12-18 23:09:45,664 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 [2019-12-18 23:09:45,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-12-18 23:09:45,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-12-18 23:09:45,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-12-18 23:09:45,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-12-18 23:09:45,667 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2019-12-18 23:09:45,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:09:45,667 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-12-18 23:09:45,667 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 23:09:45,668 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-12-18 23:09:45,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 23:09:45,668 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:09:45,668 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:09:45,668 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:09:45,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:09:45,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1633797007, now seen corresponding path program 2 times [2019-12-18 23:09:45,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:09:45,669 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343902544] [2019-12-18 23:09:45,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:09:45,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:09:45,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:09:45,715 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343902544] [2019-12-18 23:09:45,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:09:45,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 23:09:45,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492997771] [2019-12-18 23:09:45,717 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 23:09:45,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:09:45,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 23:09:45,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 23:09:45,718 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 4 states. [2019-12-18 23:09:45,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:09:45,728 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2019-12-18 23:09:45,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 23:09:45,728 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-18 23:09:45,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:09:45,729 INFO L225 Difference]: With dead ends: 13 [2019-12-18 23:09:45,729 INFO L226 Difference]: Without dead ends: 0 [2019-12-18 23:09:45,730 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 [2019-12-18 23:09:45,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-18 23:09:45,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-18 23:09:45,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-18 23:09:45,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-18 23:09:45,731 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-18 23:09:45,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:09:45,731 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-18 23:09:45,731 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 23:09:45,731 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-18 23:09:45,731 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-18 23:09:45,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 11:09:45 BasicIcfg [2019-12-18 23:09:45,734 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-18 23:09:45,736 INFO L168 Benchmark]: Toolchain (without parser) took 4329.00 ms. Allocated memory was 144.7 MB in the beginning and 246.9 MB in the end (delta: 102.2 MB). Free memory was 100.0 MB in the beginning and 128.5 MB in the end (delta: -28.5 MB). Peak memory consumption was 73.7 MB. Max. memory is 7.1 GB. [2019-12-18 23:09:45,737 INFO L168 Benchmark]: CDTParser took 1.42 ms. Allocated memory is still 144.7 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-12-18 23:09:45,738 INFO L168 Benchmark]: CACSL2BoogieTranslator took 779.77 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 99.6 MB in the beginning and 157.4 MB in the end (delta: -57.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2019-12-18 23:09:45,739 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.40 ms. Allocated memory is still 201.3 MB. Free memory was 157.4 MB in the beginning and 155.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2019-12-18 23:09:45,740 INFO L168 Benchmark]: Boogie Preprocessor took 28.82 ms. Allocated memory is still 201.3 MB. Free memory was 155.2 MB in the beginning and 153.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-18 23:09:45,741 INFO L168 Benchmark]: RCFGBuilder took 536.22 ms. Allocated memory is still 201.3 MB. Free memory was 153.9 MB in the beginning and 133.1 MB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2019-12-18 23:09:45,742 INFO L168 Benchmark]: TraceAbstraction took 2925.85 ms. Allocated memory was 201.3 MB in the beginning and 246.9 MB in the end (delta: 45.6 MB). Free memory was 132.5 MB in the beginning and 128.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 49.6 MB. Max. memory is 7.1 GB. [2019-12-18 23:09:45,746 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.42 ms. Allocated memory is still 144.7 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 779.77 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 99.6 MB in the beginning and 157.4 MB in the end (delta: -57.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 52.40 ms. Allocated memory is still 201.3 MB. Free memory was 157.4 MB in the beginning and 155.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.82 ms. Allocated memory is still 201.3 MB. Free memory was 155.2 MB in the beginning and 153.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 536.22 ms. Allocated memory is still 201.3 MB. Free memory was 153.9 MB in the beginning and 133.1 MB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2925.85 ms. Allocated memory was 201.3 MB in the beginning and 246.9 MB in the end (delta: 45.6 MB). Free memory was 132.5 MB in the beginning and 128.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 49.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 64 ProgramPointsBefore, 22 ProgramPointsAfterwards, 55 TransitionsBefore, 17 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 236 VarBasedMoverChecksPositive, 9 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 425 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, 55 locations, 1 error locations. Result: SAFE, OverallTime: 2.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 63 SDtfs, 68 SDslu, 79 SDs, 0 SdLazy, 57 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred 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, 6 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 1341 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...