/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread-ext/15_dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 11:46:20,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 11:46:20,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 11:46:20,243 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 11:46:20,244 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 11:46:20,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 11:46:20,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 11:46:20,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 11:46:20,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 11:46:20,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 11:46:20,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 11:46:20,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 11:46:20,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 11:46:20,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 11:46:20,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 11:46:20,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 11:46:20,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 11:46:20,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 11:46:20,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 11:46:20,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 11:46:20,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 11:46:20,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 11:46:20,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 11:46:20,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 11:46:20,306 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 11:46:20,306 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 11:46:20,306 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 11:46:20,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 11:46:20,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 11:46:20,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 11:46:20,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 11:46:20,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 11:46:20,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 11:46:20,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 11:46:20,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 11:46:20,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 11:46:20,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 11:46:20,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 11:46:20,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 11:46:20,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 11:46:20,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 11:46:20,320 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-16 11:46:20,369 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 11:46:20,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 11:46:20,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 11:46:20,372 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 11:46:20,372 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 11:46:20,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 11:46:20,373 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 11:46:20,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 11:46:20,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 11:46:20,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 11:46:20,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 11:46:20,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 11:46:20,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 11:46:20,375 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 11:46:20,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 11:46:20,376 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 11:46:20,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 11:46:20,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 11:46:20,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 11:46:20,377 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 11:46:20,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 11:46:20,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:46:20,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 11:46:20,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 11:46:20,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 11:46:20,378 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 11:46:20,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 11:46:20,378 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 11:46:20,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 11:46:20,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 11:46:20,705 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 11:46:20,710 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 11:46:20,711 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 11:46:20,712 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 11:46:20,712 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/15_dekker.i [2020-10-16 11:46:20,772 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50b13c5e5/af5d65f1b77b4a7a8d5d9af15e24d12e/FLAG9751e1a11 [2020-10-16 11:46:21,312 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 11:46:21,312 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-ext/15_dekker.i [2020-10-16 11:46:21,330 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50b13c5e5/af5d65f1b77b4a7a8d5d9af15e24d12e/FLAG9751e1a11 [2020-10-16 11:46:21,582 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50b13c5e5/af5d65f1b77b4a7a8d5d9af15e24d12e [2020-10-16 11:46:21,591 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 11:46:21,593 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 11:46:21,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 11:46:21,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 11:46:21,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 11:46:21,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:46:21" (1/1) ... [2020-10-16 11:46:21,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3846ab79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:21, skipping insertion in model container [2020-10-16 11:46:21,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:46:21" (1/1) ... [2020-10-16 11:46:21,613 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 11:46:21,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 11:46:22,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:46:22,239 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 11:46:22,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:46:22,352 INFO L208 MainTranslator]: Completed translation [2020-10-16 11:46:22,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:22 WrapperNode [2020-10-16 11:46:22,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 11:46:22,354 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 11:46:22,354 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 11:46:22,354 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 11:46:22,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:22" (1/1) ... [2020-10-16 11:46:22,379 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:22" (1/1) ... [2020-10-16 11:46:22,417 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 11:46:22,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 11:46:22,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 11:46:22,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 11:46:22,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:22" (1/1) ... [2020-10-16 11:46:22,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:22" (1/1) ... [2020-10-16 11:46:22,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:22" (1/1) ... [2020-10-16 11:46:22,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:22" (1/1) ... [2020-10-16 11:46:22,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:22" (1/1) ... [2020-10-16 11:46:22,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:22" (1/1) ... [2020-10-16 11:46:22,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:22" (1/1) ... [2020-10-16 11:46:22,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 11:46:22,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 11:46:22,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 11:46:22,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 11:46:22,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:46:22,513 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 11:46:22,513 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 11:46:22,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 11:46:22,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 11:46:22,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 11:46:22,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 11:46:22,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 11:46:22,516 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 11:46:22,823 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 11:46:22,824 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-16 11:46:22,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:46:22 BoogieIcfgContainer [2020-10-16 11:46:22,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 11:46:22,827 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 11:46:22,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 11:46:22,831 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 11:46:22,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:46:21" (1/3) ... [2020-10-16 11:46:22,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@741edd98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:46:22, skipping insertion in model container [2020-10-16 11:46:22,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:22" (2/3) ... [2020-10-16 11:46:22,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@741edd98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:46:22, skipping insertion in model container [2020-10-16 11:46:22,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:46:22" (3/3) ... [2020-10-16 11:46:22,838 INFO L111 eAbstractionObserver]: Analyzing ICFG 15_dekker.i [2020-10-16 11:46:22,856 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 11:46:22,856 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 11:46:22,863 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 11:46:22,864 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 11:46:22,894 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:22,895 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:22,895 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:22,896 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:22,898 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:22,898 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:22,904 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:22,905 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:22,905 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:22,905 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:22,912 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:46:22,926 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 11:46:22,945 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:46:22,945 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:46:22,945 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 11:46:22,946 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:46:22,946 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:46:22,946 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:46:22,946 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:46:22,946 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:46:22,958 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 11:46:22,958 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 65 transitions, 135 flow [2020-10-16 11:46:22,960 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 65 transitions, 135 flow [2020-10-16 11:46:22,962 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 57 places, 65 transitions, 135 flow [2020-10-16 11:46:22,999 INFO L129 PetriNetUnfolder]: 12/64 cut-off events. [2020-10-16 11:46:23,000 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 11:46:23,006 INFO L80 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 64 events. 12/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 52. Up to 3 conditions per place. [2020-10-16 11:46:23,010 INFO L117 LiptonReduction]: Number of co-enabled transitions 1302 [2020-10-16 11:46:23,699 INFO L132 LiptonReduction]: Checked pairs total: 4161 [2020-10-16 11:46:23,699 INFO L134 LiptonReduction]: Total number of compositions: 34 [2020-10-16 11:46:23,706 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 38 transitions, 81 flow [2020-10-16 11:46:23,724 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 170 states. [2020-10-16 11:46:23,727 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-10-16 11:46:23,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-16 11:46:23,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:46:23,734 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-16 11:46:23,735 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:46:23,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:46:23,741 INFO L82 PathProgramCache]: Analyzing trace with hash 257581824, now seen corresponding path program 1 times [2020-10-16 11:46:23,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:46:23,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952068493] [2020-10-16 11:46:23,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:46:23,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:46:23,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:46:23,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952068493] [2020-10-16 11:46:23,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:46:23,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:46:23,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811835731] [2020-10-16 11:46:23,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 11:46:23,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:46:23,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 11:46:23,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 11:46:23,944 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 2 states. [2020-10-16 11:46:23,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:46:23,969 INFO L93 Difference]: Finished difference Result 170 states and 390 transitions. [2020-10-16 11:46:23,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 11:46:23,971 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-10-16 11:46:23,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:46:23,986 INFO L225 Difference]: With dead ends: 170 [2020-10-16 11:46:23,986 INFO L226 Difference]: Without dead ends: 155 [2020-10-16 11:46:23,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 11:46:24,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-16 11:46:24,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2020-10-16 11:46:24,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-16 11:46:24,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 360 transitions. [2020-10-16 11:46:24,046 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 360 transitions. Word has length 5 [2020-10-16 11:46:24,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:46:24,046 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 360 transitions. [2020-10-16 11:46:24,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 11:46:24,047 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 360 transitions. [2020-10-16 11:46:24,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-16 11:46:24,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:46:24,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 11:46:24,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 11:46:24,048 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:46:24,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:46:24,049 INFO L82 PathProgramCache]: Analyzing trace with hash -604925666, now seen corresponding path program 1 times [2020-10-16 11:46:24,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:46:24,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67165506] [2020-10-16 11:46:24,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:46:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:46:24,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:46:24,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67165506] [2020-10-16 11:46:24,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:46:24,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:46:24,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424349862] [2020-10-16 11:46:24,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:46:24,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:46:24,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:46:24,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:46:24,110 INFO L87 Difference]: Start difference. First operand 155 states and 360 transitions. Second operand 3 states. [2020-10-16 11:46:24,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:46:24,156 INFO L93 Difference]: Finished difference Result 154 states and 341 transitions. [2020-10-16 11:46:24,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:46:24,157 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-16 11:46:24,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:46:24,159 INFO L225 Difference]: With dead ends: 154 [2020-10-16 11:46:24,160 INFO L226 Difference]: Without dead ends: 130 [2020-10-16 11:46:24,160 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 [2020-10-16 11:46:24,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-16 11:46:24,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 122. [2020-10-16 11:46:24,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-16 11:46:24,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 278 transitions. [2020-10-16 11:46:24,177 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 278 transitions. Word has length 6 [2020-10-16 11:46:24,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:46:24,177 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 278 transitions. [2020-10-16 11:46:24,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:46:24,177 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 278 transitions. [2020-10-16 11:46:24,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-16 11:46:24,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:46:24,178 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 11:46:24,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 11:46:24,179 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:46:24,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:46:24,179 INFO L82 PathProgramCache]: Analyzing trace with hash -604373151, now seen corresponding path program 1 times [2020-10-16 11:46:24,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:46:24,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859000920] [2020-10-16 11:46:24,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:46:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:46:24,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:46:24,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859000920] [2020-10-16 11:46:24,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:46:24,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:46:24,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093206290] [2020-10-16 11:46:24,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:46:24,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:46:24,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:46:24,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:46:24,251 INFO L87 Difference]: Start difference. First operand 122 states and 278 transitions. Second operand 3 states. [2020-10-16 11:46:24,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:46:24,284 INFO L93 Difference]: Finished difference Result 116 states and 257 transitions. [2020-10-16 11:46:24,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:46:24,285 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-16 11:46:24,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:46:24,286 INFO L225 Difference]: With dead ends: 116 [2020-10-16 11:46:24,286 INFO L226 Difference]: Without dead ends: 83 [2020-10-16 11:46:24,287 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 [2020-10-16 11:46:24,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-16 11:46:24,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-10-16 11:46:24,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-16 11:46:24,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 185 transitions. [2020-10-16 11:46:24,296 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 185 transitions. Word has length 6 [2020-10-16 11:46:24,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:46:24,297 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 185 transitions. [2020-10-16 11:46:24,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:46:24,297 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 185 transitions. [2020-10-16 11:46:24,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:46:24,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:46:24,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:46:24,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 11:46:24,299 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:46:24,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:46:24,299 INFO L82 PathProgramCache]: Analyzing trace with hash 342967710, now seen corresponding path program 1 times [2020-10-16 11:46:24,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:46:24,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192085668] [2020-10-16 11:46:24,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:46:24,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:46:24,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:46:24,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192085668] [2020-10-16 11:46:24,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:46:24,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:46:24,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842878546] [2020-10-16 11:46:24,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:46:24,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:46:24,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:46:24,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:46:24,340 INFO L87 Difference]: Start difference. First operand 83 states and 185 transitions. Second operand 3 states. [2020-10-16 11:46:24,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:46:24,356 INFO L93 Difference]: Finished difference Result 83 states and 180 transitions. [2020-10-16 11:46:24,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:46:24,356 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-16 11:46:24,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:46:24,358 INFO L225 Difference]: With dead ends: 83 [2020-10-16 11:46:24,358 INFO L226 Difference]: Without dead ends: 71 [2020-10-16 11:46:24,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:46:24,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-16 11:46:24,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-10-16 11:46:24,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-16 11:46:24,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 152 transitions. [2020-10-16 11:46:24,366 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 152 transitions. Word has length 9 [2020-10-16 11:46:24,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:46:24,366 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 152 transitions. [2020-10-16 11:46:24,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:46:24,367 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 152 transitions. [2020-10-16 11:46:24,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:46:24,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:46:24,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:46:24,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 11:46:24,369 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:46:24,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:46:24,369 INFO L82 PathProgramCache]: Analyzing trace with hash -321234212, now seen corresponding path program 1 times [2020-10-16 11:46:24,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:46:24,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646765560] [2020-10-16 11:46:24,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:46:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:46:24,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:46:24,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646765560] [2020-10-16 11:46:24,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:46:24,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:46:24,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570953112] [2020-10-16 11:46:24,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:46:24,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:46:24,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:46:24,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:46:24,407 INFO L87 Difference]: Start difference. First operand 71 states and 152 transitions. Second operand 3 states. [2020-10-16 11:46:24,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:46:24,424 INFO L93 Difference]: Finished difference Result 50 states and 123 transitions. [2020-10-16 11:46:24,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:46:24,425 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-16 11:46:24,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:46:24,425 INFO L225 Difference]: With dead ends: 50 [2020-10-16 11:46:24,426 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 11:46:24,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:46:24,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 11:46:24,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 11:46:24,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 11:46:24,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 11:46:24,427 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-10-16 11:46:24,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:46:24,427 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 11:46:24,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:46:24,428 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 11:46:24,428 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 11:46:24,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 11:46:24,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:46:24 BasicIcfg [2020-10-16 11:46:24,434 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 11:46:24,438 INFO L168 Benchmark]: Toolchain (without parser) took 2843.56 ms. Allocated memory was 148.4 MB in the beginning and 235.4 MB in the end (delta: 87.0 MB). Free memory was 101.9 MB in the beginning and 116.3 MB in the end (delta: -14.5 MB). Peak memory consumption was 72.6 MB. Max. memory is 7.1 GB. [2020-10-16 11:46:24,440 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 148.4 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 11:46:24,442 INFO L168 Benchmark]: CACSL2BoogieTranslator took 759.79 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 101.6 MB in the beginning and 165.4 MB in the end (delta: -63.8 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2020-10-16 11:46:24,448 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.89 ms. Allocated memory is still 205.0 MB. Free memory was 165.4 MB in the beginning and 162.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-10-16 11:46:24,449 INFO L168 Benchmark]: Boogie Preprocessor took 30.86 ms. Allocated memory is still 205.0 MB. Free memory was 162.8 MB in the beginning and 161.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 11:46:24,450 INFO L168 Benchmark]: RCFGBuilder took 375.93 ms. Allocated memory is still 205.0 MB. Free memory was 161.5 MB in the beginning and 141.7 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-10-16 11:46:24,450 INFO L168 Benchmark]: TraceAbstraction took 1606.77 ms. Allocated memory was 205.0 MB in the beginning and 235.4 MB in the end (delta: 30.4 MB). Free memory was 141.0 MB in the beginning and 116.3 MB in the end (delta: 24.7 MB). Peak memory consumption was 55.1 MB. Max. memory is 7.1 GB. [2020-10-16 11:46:24,463 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 148.4 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 759.79 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 101.6 MB in the beginning and 165.4 MB in the end (delta: -63.8 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 64.89 ms. Allocated memory is still 205.0 MB. Free memory was 165.4 MB in the beginning and 162.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.86 ms. Allocated memory is still 205.0 MB. Free memory was 162.8 MB in the beginning and 161.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 375.93 ms. Allocated memory is still 205.0 MB. Free memory was 161.5 MB in the beginning and 141.7 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1606.77 ms. Allocated memory was 205.0 MB in the beginning and 235.4 MB in the end (delta: 30.4 MB). Free memory was 141.0 MB in the beginning and 116.3 MB in the end (delta: 24.7 MB). Peak memory consumption was 55.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 636 VarBasedMoverChecksPositive, 27 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 160 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.7s, 57 PlacesBefore, 31 PlacesAfterwards, 65 TransitionsBefore, 38 TransitionsAfterwards, 1302 CoEnabledTransitionPairs, 5 FixpointIterations, 10 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 34 TotalNumberOfCompositions, 4161 MoverChecksTotal - PositiveResult [Line: 686]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 701]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 54 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.7s, HoareTripleCheckerStatistics: 173 SDtfs, 72 SDslu, 59 SDs, 0 SdLazy, 26 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=170occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 326 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...