/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-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 12:35:13,253 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 12:35:13,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 12:35:13,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 12:35:13,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 12:35:13,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 12:35:13,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 12:35:13,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 12:35:13,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 12:35:13,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 12:35:13,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 12:35:13,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 12:35:13,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 12:35:13,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 12:35:13,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 12:35:13,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 12:35:13,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 12:35:13,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 12:35:13,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 12:35:13,343 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 12:35:13,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 12:35:13,348 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 12:35:13,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 12:35:13,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 12:35:13,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 12:35:13,356 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 12:35:13,356 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 12:35:13,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 12:35:13,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 12:35:13,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 12:35:13,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 12:35:13,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 12:35:13,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 12:35:13,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 12:35:13,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 12:35:13,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 12:35:13,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 12:35:13,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 12:35:13,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 12:35:13,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 12:35:13,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 12:35:13,370 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-McrAutomaton-WP.epf [2020-10-16 12:35:13,415 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 12:35:13,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 12:35:13,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 12:35:13,418 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 12:35:13,418 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 12:35:13,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 12:35:13,419 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 12:35:13,419 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 12:35:13,419 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 12:35:13,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 12:35:13,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 12:35:13,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 12:35:13,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 12:35:13,421 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 12:35:13,422 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 12:35:13,422 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 12:35:13,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 12:35:13,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 12:35:13,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 12:35:13,423 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 12:35:13,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 12:35:13,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:35:13,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 12:35:13,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 12:35:13,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 12:35:13,424 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 12:35:13,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 12:35:13,424 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 12:35:13,424 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 12:35:13,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 12:35:13,425 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 12:35:13,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 12:35:13,712 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 12:35:13,715 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 12:35:13,717 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 12:35:13,718 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 12:35:13,719 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i [2020-10-16 12:35:13,787 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92e66dc51/40ceb08c6b0c4897bbf7c2f4d5f212d8/FLAG4207a9d7e [2020-10-16 12:35:14,348 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 12:35:14,349 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-ext/17_szymanski.i [2020-10-16 12:35:14,365 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92e66dc51/40ceb08c6b0c4897bbf7c2f4d5f212d8/FLAG4207a9d7e [2020-10-16 12:35:14,635 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92e66dc51/40ceb08c6b0c4897bbf7c2f4d5f212d8 [2020-10-16 12:35:14,646 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 12:35:14,648 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 12:35:14,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 12:35:14,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 12:35:14,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 12:35:14,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:35:14" (1/1) ... [2020-10-16 12:35:14,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45090060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:14, skipping insertion in model container [2020-10-16 12:35:14,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:35:14" (1/1) ... [2020-10-16 12:35:14,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 12:35:14,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 12:35:15,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:35:15,251 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 12:35:15,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:35:15,399 INFO L208 MainTranslator]: Completed translation [2020-10-16 12:35:15,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:15 WrapperNode [2020-10-16 12:35:15,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 12:35:15,401 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 12:35:15,401 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 12:35:15,401 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 12:35:15,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:15" (1/1) ... [2020-10-16 12:35:15,427 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:15" (1/1) ... [2020-10-16 12:35:15,450 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 12:35:15,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 12:35:15,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 12:35:15,451 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 12:35:15,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:15" (1/1) ... [2020-10-16 12:35:15,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:15" (1/1) ... [2020-10-16 12:35:15,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:15" (1/1) ... [2020-10-16 12:35:15,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:15" (1/1) ... [2020-10-16 12:35:15,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:15" (1/1) ... [2020-10-16 12:35:15,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:15" (1/1) ... [2020-10-16 12:35:15,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:15" (1/1) ... [2020-10-16 12:35:15,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 12:35:15,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 12:35:15,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 12:35:15,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 12:35:15,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:15" (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 12:35:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 12:35:15,573 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 12:35:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 12:35:15,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 12:35:15,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 12:35:15,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 12:35:15,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 12:35:15,576 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 12:35:15,932 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 12:35:15,932 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-16 12:35:15,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:35:15 BoogieIcfgContainer [2020-10-16 12:35:15,935 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 12:35:15,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 12:35:15,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 12:35:15,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 12:35:15,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:35:14" (1/3) ... [2020-10-16 12:35:15,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e857978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:35:15, skipping insertion in model container [2020-10-16 12:35:15,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:15" (2/3) ... [2020-10-16 12:35:15,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e857978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:35:15, skipping insertion in model container [2020-10-16 12:35:15,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:35:15" (3/3) ... [2020-10-16 12:35:15,945 INFO L111 eAbstractionObserver]: Analyzing ICFG 17_szymanski.i [2020-10-16 12:35:15,960 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 12:35:15,960 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 12:35:15,969 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 12:35:15,970 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 12:35:15,998 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:15,998 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:15,999 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:15,999 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:16,000 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:16,000 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:16,006 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:16,006 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:16,007 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:16,007 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:16,013 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:35:16,029 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 12:35:16,054 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:35:16,055 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:35:16,055 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:35:16,055 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 12:35:16,055 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:35:16,056 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:35:16,056 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:35:16,056 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:35:16,070 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:35:16,071 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 82 transitions, 169 flow [2020-10-16 12:35:16,074 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 82 transitions, 169 flow [2020-10-16 12:35:16,081 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 82 transitions, 169 flow [2020-10-16 12:35:16,126 INFO L129 PetriNetUnfolder]: 24/81 cut-off events. [2020-10-16 12:35:16,126 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 12:35:16,133 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 81 events. 24/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 134 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 70. Up to 3 conditions per place. [2020-10-16 12:35:16,138 INFO L117 LiptonReduction]: Number of co-enabled transitions 2400 [2020-10-16 12:35:16,800 INFO L132 LiptonReduction]: Checked pairs total: 4373 [2020-10-16 12:35:16,800 INFO L134 LiptonReduction]: Total number of compositions: 43 [2020-10-16 12:35:16,808 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 51 transitions, 107 flow [2020-10-16 12:35:16,829 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 227 states. [2020-10-16 12:35:16,832 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states. [2020-10-16 12:35:16,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:35:16,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:35:16,842 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:35:16,842 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:35:16,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:35:16,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1558311805, now seen corresponding path program 1 times [2020-10-16 12:35:16,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:35:16,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222010434] [2020-10-16 12:35:16,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:35:16,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:35:17,029 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 12:35:17,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222010434] [2020-10-16 12:35:17,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:35:17,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:35:17,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1029948082] [2020-10-16 12:35:17,033 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:35:17,036 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:35:17,050 INFO L258 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-16 12:35:17,050 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:35:17,054 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:35:17,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 12:35:17,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:35:17,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 12:35:17,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 12:35:17,073 INFO L87 Difference]: Start difference. First operand 227 states. Second operand 2 states. [2020-10-16 12:35:17,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:35:17,091 INFO L93 Difference]: Finished difference Result 198 states and 534 transitions. [2020-10-16 12:35:17,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 12:35:17,092 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-16 12:35:17,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:35:17,107 INFO L225 Difference]: With dead ends: 198 [2020-10-16 12:35:17,107 INFO L226 Difference]: Without dead ends: 198 [2020-10-16 12:35:17,108 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 12:35:17,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-16 12:35:17,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-10-16 12:35:17,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-16 12:35:17,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 534 transitions. [2020-10-16 12:35:17,179 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 534 transitions. Word has length 9 [2020-10-16 12:35:17,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:35:17,180 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 534 transitions. [2020-10-16 12:35:17,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 12:35:17,180 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 534 transitions. [2020-10-16 12:35:17,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:35:17,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:35:17,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:35:17,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 12:35:17,183 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:35:17,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:35:17,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1031484476, now seen corresponding path program 1 times [2020-10-16 12:35:17,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:35:17,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005441716] [2020-10-16 12:35:17,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:35:17,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:35:17,250 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 12:35:17,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005441716] [2020-10-16 12:35:17,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:35:17,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:35:17,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1810487877] [2020-10-16 12:35:17,252 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:35:17,252 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:35:17,254 INFO L258 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-10-16 12:35:17,254 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:35:17,254 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:35:17,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:35:17,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:35:17,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:35:17,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:35:17,257 INFO L87 Difference]: Start difference. First operand 198 states and 534 transitions. Second operand 3 states. [2020-10-16 12:35:17,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:35:17,297 INFO L93 Difference]: Finished difference Result 362 states and 979 transitions. [2020-10-16 12:35:17,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:35:17,298 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-16 12:35:17,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:35:17,302 INFO L225 Difference]: With dead ends: 362 [2020-10-16 12:35:17,302 INFO L226 Difference]: Without dead ends: 362 [2020-10-16 12:35:17,303 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 12:35:17,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-10-16 12:35:17,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 221. [2020-10-16 12:35:17,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-16 12:35:17,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 589 transitions. [2020-10-16 12:35:17,330 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 589 transitions. Word has length 11 [2020-10-16 12:35:17,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:35:17,330 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 589 transitions. [2020-10-16 12:35:17,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:35:17,331 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 589 transitions. [2020-10-16 12:35:17,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:35:17,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:35:17,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:35:17,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 12:35:17,333 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:35:17,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:35:17,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1746695160, now seen corresponding path program 1 times [2020-10-16 12:35:17,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:35:17,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632623852] [2020-10-16 12:35:17,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:35:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:35:17,379 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 12:35:17,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632623852] [2020-10-16 12:35:17,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:35:17,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:35:17,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2085031720] [2020-10-16 12:35:17,380 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:35:17,381 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:35:17,382 INFO L258 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-10-16 12:35:17,382 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:35:17,382 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:35:17,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:35:17,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:35:17,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:35:17,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:35:17,384 INFO L87 Difference]: Start difference. First operand 221 states and 589 transitions. Second operand 3 states. [2020-10-16 12:35:17,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:35:17,434 INFO L93 Difference]: Finished difference Result 348 states and 934 transitions. [2020-10-16 12:35:17,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:35:17,435 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-16 12:35:17,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:35:17,439 INFO L225 Difference]: With dead ends: 348 [2020-10-16 12:35:17,440 INFO L226 Difference]: Without dead ends: 348 [2020-10-16 12:35:17,441 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 12:35:17,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-10-16 12:35:17,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 218. [2020-10-16 12:35:17,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-16 12:35:17,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 560 transitions. [2020-10-16 12:35:17,480 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 560 transitions. Word has length 11 [2020-10-16 12:35:17,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:35:17,480 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 560 transitions. [2020-10-16 12:35:17,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:35:17,481 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 560 transitions. [2020-10-16 12:35:17,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 12:35:17,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:35:17,483 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:35:17,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 12:35:17,484 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:35:17,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:35:17,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1652537164, now seen corresponding path program 1 times [2020-10-16 12:35:17,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:35:17,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714143781] [2020-10-16 12:35:17,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:35:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:35:17,534 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 12:35:17,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714143781] [2020-10-16 12:35:17,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:35:17,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:35:17,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [495518188] [2020-10-16 12:35:17,535 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:35:17,537 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:35:17,539 INFO L258 McrAutomatonBuilder]: Finished intersection with 35 states and 48 transitions. [2020-10-16 12:35:17,540 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:35:17,559 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:35:17,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:35:17,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:35:17,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:35:17,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:35:17,561 INFO L87 Difference]: Start difference. First operand 218 states and 560 transitions. Second operand 3 states. [2020-10-16 12:35:17,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:35:17,608 INFO L93 Difference]: Finished difference Result 220 states and 542 transitions. [2020-10-16 12:35:17,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:35:17,609 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-16 12:35:17,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:35:17,611 INFO L225 Difference]: With dead ends: 220 [2020-10-16 12:35:17,611 INFO L226 Difference]: Without dead ends: 220 [2020-10-16 12:35:17,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 1 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 12:35:17,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-16 12:35:17,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-10-16 12:35:17,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-16 12:35:17,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 542 transitions. [2020-10-16 12:35:17,624 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 542 transitions. Word has length 19 [2020-10-16 12:35:17,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:35:17,624 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 542 transitions. [2020-10-16 12:35:17,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:35:17,625 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 542 transitions. [2020-10-16 12:35:17,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 12:35:17,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:35:17,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:35:17,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 12:35:17,628 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:35:17,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:35:17,629 INFO L82 PathProgramCache]: Analyzing trace with hash 952506058, now seen corresponding path program 1 times [2020-10-16 12:35:17,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:35:17,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888827343] [2020-10-16 12:35:17,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:35:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:35:17,688 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 12:35:17,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888827343] [2020-10-16 12:35:17,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:35:17,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:35:17,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [166706821] [2020-10-16 12:35:17,693 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:35:17,697 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:35:17,702 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 34 transitions. [2020-10-16 12:35:17,702 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:35:17,711 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:35:17,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:35:17,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:35:17,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:35:17,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:35:17,713 INFO L87 Difference]: Start difference. First operand 220 states and 542 transitions. Second operand 3 states. [2020-10-16 12:35:17,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:35:17,797 INFO L93 Difference]: Finished difference Result 240 states and 579 transitions. [2020-10-16 12:35:17,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:35:17,798 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-16 12:35:17,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:35:17,800 INFO L225 Difference]: With dead ends: 240 [2020-10-16 12:35:17,801 INFO L226 Difference]: Without dead ends: 240 [2020-10-16 12:35:17,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 12:35:17,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-10-16 12:35:17,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 230. [2020-10-16 12:35:17,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-16 12:35:17,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 557 transitions. [2020-10-16 12:35:17,821 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 557 transitions. Word has length 19 [2020-10-16 12:35:17,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:35:17,822 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 557 transitions. [2020-10-16 12:35:17,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:35:17,822 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 557 transitions. [2020-10-16 12:35:17,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 12:35:17,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:35:17,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:35:17,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 12:35:17,830 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:35:17,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:35:17,830 INFO L82 PathProgramCache]: Analyzing trace with hash -687819132, now seen corresponding path program 2 times [2020-10-16 12:35:17,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:35:17,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124910069] [2020-10-16 12:35:17,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:35:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:35:17,884 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 12:35:17,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124910069] [2020-10-16 12:35:17,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:35:17,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:35:17,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2070316335] [2020-10-16 12:35:17,886 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:35:17,888 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:35:17,891 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 34 transitions. [2020-10-16 12:35:17,891 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:35:17,896 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:35:17,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:35:17,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:35:17,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:35:17,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:35:17,898 INFO L87 Difference]: Start difference. First operand 230 states and 557 transitions. Second operand 3 states. [2020-10-16 12:35:17,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:35:17,948 INFO L93 Difference]: Finished difference Result 228 states and 541 transitions. [2020-10-16 12:35:17,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:35:17,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-16 12:35:17,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:35:17,950 INFO L225 Difference]: With dead ends: 228 [2020-10-16 12:35:17,951 INFO L226 Difference]: Without dead ends: 228 [2020-10-16 12:35:17,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 12:35:17,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-16 12:35:17,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2020-10-16 12:35:17,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-10-16 12:35:17,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 541 transitions. [2020-10-16 12:35:17,991 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 541 transitions. Word has length 19 [2020-10-16 12:35:17,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:35:17,991 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 541 transitions. [2020-10-16 12:35:17,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:35:17,991 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 541 transitions. [2020-10-16 12:35:17,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 12:35:17,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:35:17,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:35:17,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 12:35:17,993 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:35:17,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:35:17,994 INFO L82 PathProgramCache]: Analyzing trace with hash -36638496, now seen corresponding path program 3 times [2020-10-16 12:35:17,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:35:17,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917767500] [2020-10-16 12:35:17,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:35:18,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:35:18,027 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 12:35:18,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917767500] [2020-10-16 12:35:18,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:35:18,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:35:18,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [95080817] [2020-10-16 12:35:18,028 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:35:18,029 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:35:18,032 INFO L258 McrAutomatonBuilder]: Finished intersection with 34 states and 46 transitions. [2020-10-16 12:35:18,032 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:35:18,039 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:35:18,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:35:18,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:35:18,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:35:18,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:35:18,041 INFO L87 Difference]: Start difference. First operand 228 states and 541 transitions. Second operand 3 states. [2020-10-16 12:35:18,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:35:18,080 INFO L93 Difference]: Finished difference Result 194 states and 456 transitions. [2020-10-16 12:35:18,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:35:18,081 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-16 12:35:18,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:35:18,081 INFO L225 Difference]: With dead ends: 194 [2020-10-16 12:35:18,081 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 12:35:18,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 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 12:35:18,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 12:35:18,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 12:35:18,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 12:35:18,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 12:35:18,083 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-16 12:35:18,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:35:18,083 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 12:35:18,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:35:18,084 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 12:35:18,084 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 12:35:18,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 12:35:18,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:35:18 BasicIcfg [2020-10-16 12:35:18,088 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 12:35:18,091 INFO L168 Benchmark]: Toolchain (without parser) took 3442.41 ms. Allocated memory was 140.5 MB in the beginning and 248.0 MB in the end (delta: 107.5 MB). Free memory was 101.1 MB in the beginning and 199.6 MB in the end (delta: -98.5 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. [2020-10-16 12:35:18,092 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 12:35:18,093 INFO L168 Benchmark]: CACSL2BoogieTranslator took 749.39 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 100.9 MB in the beginning and 163.4 MB in the end (delta: -62.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-10-16 12:35:18,094 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.98 ms. Allocated memory is still 203.4 MB. Free memory was 163.4 MB in the beginning and 160.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-10-16 12:35:18,095 INFO L168 Benchmark]: Boogie Preprocessor took 48.14 ms. Allocated memory is still 203.4 MB. Free memory was 160.8 MB in the beginning and 159.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 12:35:18,096 INFO L168 Benchmark]: RCFGBuilder took 436.41 ms. Allocated memory is still 203.4 MB. Free memory was 159.5 MB in the beginning and 137.8 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-10-16 12:35:18,097 INFO L168 Benchmark]: TraceAbstraction took 2151.22 ms. Allocated memory was 203.4 MB in the beginning and 248.0 MB in the end (delta: 44.6 MB). Free memory was 137.1 MB in the beginning and 199.6 MB in the end (delta: -62.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 12:35:18,101 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 749.39 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 100.9 MB in the beginning and 163.4 MB in the end (delta: -62.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.98 ms. Allocated memory is still 203.4 MB. Free memory was 163.4 MB in the beginning and 160.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 48.14 ms. Allocated memory is still 203.4 MB. Free memory was 160.8 MB in the beginning and 159.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 436.41 ms. Allocated memory is still 203.4 MB. Free memory was 159.5 MB in the beginning and 137.8 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2151.22 ms. Allocated memory was 203.4 MB in the beginning and 248.0 MB in the end (delta: 44.6 MB). Free memory was 137.1 MB in the beginning and 199.6 MB in the end (delta: -62.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1006 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 148 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.7s, 62 PlacesBefore, 35 PlacesAfterwards, 82 TransitionsBefore, 51 TransitionsAfterwards, 2400 CoEnabledTransitionPairs, 4 FixpointIterations, 9 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 4 ChoiceCompositions, 43 TotalNumberOfCompositions, 4373 MoverChecksTotal - PositiveResult [Line: 687]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 705]: 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, 59 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.7s, HoareTripleCheckerStatistics: 373 SDtfs, 150 SDslu, 134 SDs, 0 SdLazy, 98 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 281 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 2248 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...