/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/safe029_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 22:04:10,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 22:04:10,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 22:04:10,263 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 22:04:10,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 22:04:10,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 22:04:10,276 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 22:04:10,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 22:04:10,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 22:04:10,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 22:04:10,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 22:04:10,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 22:04:10,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 22:04:10,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 22:04:10,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 22:04:10,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 22:04:10,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 22:04:10,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 22:04:10,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 22:04:10,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 22:04:10,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 22:04:10,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 22:04:10,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 22:04:10,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 22:04:10,315 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-21 22:04:10,315 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-21 22:04:10,315 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-21 22:04:10,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-21 22:04:10,320 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-21 22:04:10,321 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-21 22:04:10,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-21 22:04:10,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-21 22:04:10,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-21 22:04:10,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-21 22:04:10,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-21 22:04:10,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-21 22:04:10,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-21 22:04:10,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-21 22:04:10,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 22:04:10,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 22:04:10,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 22:04:10,332 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-21 22:04:10,374 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 22:04:10,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 22:04:10,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 22:04:10,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 22:04:10,377 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 22:04:10,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 22:04:10,377 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 22:04:10,378 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 22:04:10,378 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 22:04:10,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 22:04:10,379 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 22:04:10,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 22:04:10,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 22:04:10,380 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 22:04:10,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 22:04:10,380 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 22:04:10,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 22:04:10,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 22:04:10,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 22:04:10,381 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 22:04:10,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 22:04:10,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 22:04:10,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 22:04:10,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-21 22:04:10,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 22:04:10,383 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 22:04:10,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 22:04:10,383 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 22:04:10,384 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-21 22:04:10,384 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-21 22:04:10,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 22:04:10,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 22:04:10,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 22:04:10,743 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 22:04:10,743 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 22:04:10,744 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.opt.i [2020-10-21 22:04:10,802 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f605fc5ba/f4325698a18c4f46bc8571142c7b9d71/FLAG2701eddeb [2020-10-21 22:04:11,364 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 22:04:11,364 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.opt.i [2020-10-21 22:04:11,379 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f605fc5ba/f4325698a18c4f46bc8571142c7b9d71/FLAG2701eddeb [2020-10-21 22:04:11,822 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f605fc5ba/f4325698a18c4f46bc8571142c7b9d71 [2020-10-21 22:04:11,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 22:04:11,837 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 22:04:11,838 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 22:04:11,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 22:04:11,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 22:04:11,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 10:04:11" (1/1) ... [2020-10-21 22:04:11,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ec6a2b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:04:11, skipping insertion in model container [2020-10-21 22:04:11,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 10:04:11" (1/1) ... [2020-10-21 22:04:11,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 22:04:11,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 22:04:12,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 22:04:12,502 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 22:04:12,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 22:04:12,642 INFO L208 MainTranslator]: Completed translation [2020-10-21 22:04:12,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:04:12 WrapperNode [2020-10-21 22:04:12,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 22:04:12,647 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 22:04:12,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 22:04:12,648 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 22:04:12,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:04:12" (1/1) ... [2020-10-21 22:04:12,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:04:12" (1/1) ... [2020-10-21 22:04:12,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 22:04:12,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 22:04:12,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 22:04:12,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 22:04:12,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:04:12" (1/1) ... [2020-10-21 22:04:12,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:04:12" (1/1) ... [2020-10-21 22:04:12,706 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:04:12" (1/1) ... [2020-10-21 22:04:12,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:04:12" (1/1) ... [2020-10-21 22:04:12,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:04:12" (1/1) ... [2020-10-21 22:04:12,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:04:12" (1/1) ... [2020-10-21 22:04:12,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:04:12" (1/1) ... [2020-10-21 22:04:12,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 22:04:12,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 22:04:12,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 22:04:12,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 22:04:12,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:04:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 22:04:12,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 22:04:12,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-21 22:04:12,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 22:04:12,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 22:04:12,782 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-21 22:04:12,782 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-21 22:04:12,783 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-21 22:04:12,783 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-21 22:04:12,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 22:04:12,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-21 22:04:12,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 22:04:12,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 22:04:12,785 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-21 22:04:13,155 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 22:04:13,155 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-21 22:04:13,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 10:04:13 BoogieIcfgContainer [2020-10-21 22:04:13,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 22:04:13,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 22:04:13,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 22:04:13,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 22:04:13,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 10:04:11" (1/3) ... [2020-10-21 22:04:13,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d923af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 10:04:13, skipping insertion in model container [2020-10-21 22:04:13,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:04:12" (2/3) ... [2020-10-21 22:04:13,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d923af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 10:04:13, skipping insertion in model container [2020-10-21 22:04:13,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 10:04:13" (3/3) ... [2020-10-21 22:04:13,170 INFO L111 eAbstractionObserver]: Analyzing ICFG safe029_tso.opt.i [2020-10-21 22:04:13,179 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 22:04:13,179 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-21 22:04:13,186 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-21 22:04:13,187 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 22:04:13,214 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:04:13,215 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:04:13,215 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:04:13,215 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:04:13,216 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:04:13,216 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:04:13,217 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:04:13,217 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:04:13,217 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:04:13,217 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:04:13,218 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:04:13,218 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:04:13,222 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:04:13,222 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:04:13,223 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:04:13,223 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:04:13,231 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:04:13,231 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:04:13,232 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:04:13,232 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:04:13,235 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 22:04:13,249 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-21 22:04:13,269 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 22:04:13,269 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 22:04:13,269 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-21 22:04:13,269 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 22:04:13,269 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 22:04:13,270 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 22:04:13,270 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 22:04:13,270 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 22:04:13,284 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-21 22:04:13,287 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 63 transitions, 136 flow [2020-10-21 22:04:13,290 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 63 transitions, 136 flow [2020-10-21 22:04:13,292 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 67 places, 63 transitions, 136 flow [2020-10-21 22:04:13,334 INFO L129 PetriNetUnfolder]: 3/61 cut-off events. [2020-10-21 22:04:13,334 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-21 22:04:13,339 INFO L80 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 61 events. 3/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2020-10-21 22:04:13,342 INFO L116 LiptonReduction]: Number of co-enabled transitions 792 [2020-10-21 22:04:14,354 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-10-21 22:04:15,106 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-10-21 22:04:15,218 INFO L131 LiptonReduction]: Checked pairs total: 1732 [2020-10-21 22:04:15,219 INFO L133 LiptonReduction]: Total number of compositions: 67 [2020-10-21 22:04:15,226 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 16 transitions, 42 flow [2020-10-21 22:04:15,239 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-10-21 22:04:15,242 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-10-21 22:04:15,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-21 22:04:15,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:04:15,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-21 22:04:15,250 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:04:15,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:04:15,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1371543398, now seen corresponding path program 1 times [2020-10-21 22:04:15,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:04:15,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429099095] [2020-10-21 22:04:15,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:04:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:04:15,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:04:15,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429099095] [2020-10-21 22:04:15,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:04:15,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 22:04:15,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357022452] [2020-10-21 22:04:15,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:04:15,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:04:15,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:04:15,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:04:15,500 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-10-21 22:04:15,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:04:15,531 INFO L93 Difference]: Finished difference Result 72 states and 154 transitions. [2020-10-21 22:04:15,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:04:15,533 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-21 22:04:15,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:04:15,545 INFO L225 Difference]: With dead ends: 72 [2020-10-21 22:04:15,545 INFO L226 Difference]: Without dead ends: 56 [2020-10-21 22:04:15,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:04:15,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-21 22:04:15,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-21 22:04:15,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-21 22:04:15,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 114 transitions. [2020-10-21 22:04:15,591 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 114 transitions. Word has length 6 [2020-10-21 22:04:15,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:04:15,591 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 114 transitions. [2020-10-21 22:04:15,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:04:15,592 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 114 transitions. [2020-10-21 22:04:15,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-21 22:04:15,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:04:15,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:04:15,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 22:04:15,593 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:04:15,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:04:15,594 INFO L82 PathProgramCache]: Analyzing trace with hash 403284336, now seen corresponding path program 1 times [2020-10-21 22:04:15,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:04:15,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377461399] [2020-10-21 22:04:15,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:04:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:04:15,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:04:15,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377461399] [2020-10-21 22:04:15,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:04:15,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 22:04:15,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884098042] [2020-10-21 22:04:15,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:04:15,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:04:15,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:04:15,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:04:15,728 INFO L87 Difference]: Start difference. First operand 56 states and 114 transitions. Second operand 3 states. [2020-10-21 22:04:15,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:04:15,746 INFO L93 Difference]: Finished difference Result 55 states and 111 transitions. [2020-10-21 22:04:15,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:04:15,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-21 22:04:15,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:04:15,749 INFO L225 Difference]: With dead ends: 55 [2020-10-21 22:04:15,749 INFO L226 Difference]: Without dead ends: 55 [2020-10-21 22:04:15,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:04:15,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-21 22:04:15,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-21 22:04:15,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-21 22:04:15,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 111 transitions. [2020-10-21 22:04:15,763 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 111 transitions. Word has length 7 [2020-10-21 22:04:15,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:04:15,764 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 111 transitions. [2020-10-21 22:04:15,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:04:15,764 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 111 transitions. [2020-10-21 22:04:15,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-21 22:04:15,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:04:15,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:04:15,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 22:04:15,765 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:04:15,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:04:15,766 INFO L82 PathProgramCache]: Analyzing trace with hash -383094824, now seen corresponding path program 1 times [2020-10-21 22:04:15,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:04:15,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491795552] [2020-10-21 22:04:15,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:04:15,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:04:15,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:04:15,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491795552] [2020-10-21 22:04:15,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:04:15,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 22:04:15,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563041320] [2020-10-21 22:04:15,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 22:04:15,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:04:15,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 22:04:15,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 22:04:15,834 INFO L87 Difference]: Start difference. First operand 55 states and 111 transitions. Second operand 4 states. [2020-10-21 22:04:15,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:04:15,865 INFO L93 Difference]: Finished difference Result 56 states and 99 transitions. [2020-10-21 22:04:15,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 22:04:15,866 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-21 22:04:15,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:04:15,867 INFO L225 Difference]: With dead ends: 56 [2020-10-21 22:04:15,868 INFO L226 Difference]: Without dead ends: 40 [2020-10-21 22:04:15,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:04:15,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-21 22:04:15,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-21 22:04:15,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-21 22:04:15,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-10-21 22:04:15,874 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 8 [2020-10-21 22:04:15,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:04:15,874 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-10-21 22:04:15,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 22:04:15,875 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-10-21 22:04:15,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 22:04:15,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:04:15,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:04:15,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-21 22:04:15,876 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:04:15,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:04:15,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1007823895, now seen corresponding path program 1 times [2020-10-21 22:04:15,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:04:15,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938482688] [2020-10-21 22:04:15,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:04:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:04:15,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:04:15,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938482688] [2020-10-21 22:04:15,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:04:15,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 22:04:15,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692642852] [2020-10-21 22:04:15,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:04:15,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:04:15,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:04:15,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:04:15,913 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 3 states. [2020-10-21 22:04:15,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:04:15,921 INFO L93 Difference]: Finished difference Result 51 states and 79 transitions. [2020-10-21 22:04:15,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:04:15,922 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-21 22:04:15,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:04:15,923 INFO L225 Difference]: With dead ends: 51 [2020-10-21 22:04:15,923 INFO L226 Difference]: Without dead ends: 41 [2020-10-21 22:04:15,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:04:15,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-21 22:04:15,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-10-21 22:04:15,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-21 22:04:15,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 60 transitions. [2020-10-21 22:04:15,928 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 60 transitions. Word has length 9 [2020-10-21 22:04:15,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:04:15,929 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 60 transitions. [2020-10-21 22:04:15,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:04:15,929 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 60 transitions. [2020-10-21 22:04:15,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 22:04:15,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:04:15,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:04:15,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-21 22:04:15,930 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:04:15,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:04:15,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1633722403, now seen corresponding path program 1 times [2020-10-21 22:04:15,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:04:15,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903750780] [2020-10-21 22:04:15,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:04:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:04:15,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:04:15,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903750780] [2020-10-21 22:04:15,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:04:15,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 22:04:15,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432784402] [2020-10-21 22:04:15,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:04:15,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:04:15,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:04:15,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:04:15,963 INFO L87 Difference]: Start difference. First operand 39 states and 60 transitions. Second operand 3 states. [2020-10-21 22:04:15,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:04:15,982 INFO L93 Difference]: Finished difference Result 42 states and 57 transitions. [2020-10-21 22:04:15,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:04:15,982 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-21 22:04:15,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:04:15,983 INFO L225 Difference]: With dead ends: 42 [2020-10-21 22:04:15,983 INFO L226 Difference]: Without dead ends: 31 [2020-10-21 22:04:15,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:04:15,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-21 22:04:15,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-10-21 22:04:15,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-21 22:04:15,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2020-10-21 22:04:15,988 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 9 [2020-10-21 22:04:15,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:04:15,988 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2020-10-21 22:04:15,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:04:15,988 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2020-10-21 22:04:15,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-21 22:04:15,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:04:15,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:04:15,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-21 22:04:15,989 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:04:15,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:04:15,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1177733491, now seen corresponding path program 1 times [2020-10-21 22:04:15,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:04:15,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557478624] [2020-10-21 22:04:15,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:04:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:04:16,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:04:16,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557478624] [2020-10-21 22:04:16,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:04:16,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:04:16,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206377437] [2020-10-21 22:04:16,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:04:16,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:04:16,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:04:16,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:04:16,045 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand 5 states. [2020-10-21 22:04:16,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:04:16,065 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2020-10-21 22:04:16,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 22:04:16,065 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-21 22:04:16,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:04:16,066 INFO L225 Difference]: With dead ends: 25 [2020-10-21 22:04:16,066 INFO L226 Difference]: Without dead ends: 0 [2020-10-21 22:04:16,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-21 22:04:16,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-21 22:04:16,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-21 22:04:16,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-21 22:04:16,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-21 22:04:16,067 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-10-21 22:04:16,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:04:16,068 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-21 22:04:16,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:04:16,068 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-21 22:04:16,068 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-21 22:04:16,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-21 22:04:16,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 10:04:16 BasicIcfg [2020-10-21 22:04:16,072 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-21 22:04:16,074 INFO L168 Benchmark]: Toolchain (without parser) took 4241.02 ms. Allocated memory was 148.4 MB in the beginning and 244.8 MB in the end (delta: 96.5 MB). Free memory was 103.2 MB in the beginning and 173.0 MB in the end (delta: -69.8 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2020-10-21 22:04:16,075 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 148.4 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-21 22:04:16,076 INFO L168 Benchmark]: CACSL2BoogieTranslator took 806.17 ms. Allocated memory was 148.4 MB in the beginning and 206.0 MB in the end (delta: 57.7 MB). Free memory was 102.1 MB in the beginning and 160.8 MB in the end (delta: -58.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-10-21 22:04:16,077 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.50 ms. Allocated memory is still 206.0 MB. Free memory was 160.8 MB in the beginning and 158.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-10-21 22:04:16,078 INFO L168 Benchmark]: Boogie Preprocessor took 27.16 ms. Allocated memory is still 206.0 MB. Free memory was 158.2 MB in the beginning and 156.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-21 22:04:16,079 INFO L168 Benchmark]: RCFGBuilder took 438.36 ms. Allocated memory is still 206.0 MB. Free memory was 156.9 MB in the beginning and 134.9 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-10-21 22:04:16,080 INFO L168 Benchmark]: TraceAbstraction took 2909.91 ms. Allocated memory was 206.0 MB in the beginning and 244.8 MB in the end (delta: 38.8 MB). Free memory was 134.9 MB in the beginning and 173.0 MB in the end (delta: -38.0 MB). Peak memory consumption was 757.8 kB. Max. memory is 7.1 GB. [2020-10-21 22:04:16,084 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 148.4 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 806.17 ms. Allocated memory was 148.4 MB in the beginning and 206.0 MB in the end (delta: 57.7 MB). Free memory was 102.1 MB in the beginning and 160.8 MB in the end (delta: -58.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.50 ms. Allocated memory is still 206.0 MB. Free memory was 160.8 MB in the beginning and 158.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.16 ms. Allocated memory is still 206.0 MB. Free memory was 158.2 MB in the beginning and 156.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 438.36 ms. Allocated memory is still 206.0 MB. Free memory was 156.9 MB in the beginning and 134.9 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2909.91 ms. Allocated memory was 206.0 MB in the beginning and 244.8 MB in the end (delta: 38.8 MB). Free memory was 134.9 MB in the beginning and 173.0 MB in the end (delta: -38.0 MB). Peak memory consumption was 757.8 kB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 536 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 33 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 67 PlacesBefore, 22 PlacesAfterwards, 63 TransitionsBefore, 16 TransitionsAfterwards, 792 CoEnabledTransitionPairs, 7 FixpointIterations, 15 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 67 TotalNumberOfCompositions, 1732 MoverChecksTotal - PositiveResult [Line: 17]: 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 3 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 79 SDtfs, 34 SDslu, 63 SDs, 0 SdLazy, 38 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 861 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...