/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-bf4350c [2020-09-17 15:11:02,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-17 15:11:02,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-17 15:11:02,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-17 15:11:02,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-17 15:11:02,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-17 15:11:02,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-17 15:11:02,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-17 15:11:02,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-17 15:11:02,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-17 15:11:02,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-17 15:11:02,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-17 15:11:02,914 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-17 15:11:02,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-17 15:11:02,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-17 15:11:02,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-17 15:11:02,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-17 15:11:02,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-17 15:11:02,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-17 15:11:02,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-17 15:11:02,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-17 15:11:02,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-17 15:11:02,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-17 15:11:02,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-17 15:11:02,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-17 15:11:02,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-17 15:11:02,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-17 15:11:02,961 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-17 15:11:02,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-17 15:11:02,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-17 15:11:02,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-17 15:11:02,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-17 15:11:02,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-17 15:11:02,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-17 15:11:02,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-17 15:11:02,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-17 15:11:02,972 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-17 15:11:02,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-17 15:11:02,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-17 15:11:02,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-17 15:11:02,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-17 15:11:02,976 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-17 15:11:03,026 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-17 15:11:03,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-17 15:11:03,029 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-17 15:11:03,029 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-17 15:11:03,029 INFO L138 SettingsManager]: * Use SBE=true [2020-09-17 15:11:03,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-17 15:11:03,030 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-17 15:11:03,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-17 15:11:03,030 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-17 15:11:03,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-17 15:11:03,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-17 15:11:03,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-17 15:11:03,032 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-17 15:11:03,032 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-17 15:11:03,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-17 15:11:03,032 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-17 15:11:03,033 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-17 15:11:03,033 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-17 15:11:03,033 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-17 15:11:03,033 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-17 15:11:03,033 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-17 15:11:03,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-17 15:11:03,034 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-17 15:11:03,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-17 15:11:03,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-17 15:11:03,034 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-17 15:11:03,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-17 15:11:03,035 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-17 15:11:03,035 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-17 15:11:03,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-17 15:11:03,035 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-17 15:11:03,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-17 15:11:03,507 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-17 15:11:03,511 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-17 15:11:03,513 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-17 15:11:03,514 INFO L275 PluginConnector]: CDTParser initialized [2020-09-17 15:11:03,515 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i [2020-09-17 15:11:03,610 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c9a72b86/12de65d026734a95ba3c44c2acc3dc84/FLAG2838f315b [2020-09-17 15:11:04,258 INFO L306 CDTParser]: Found 1 translation units. [2020-09-17 15:11:04,259 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i [2020-09-17 15:11:04,277 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c9a72b86/12de65d026734a95ba3c44c2acc3dc84/FLAG2838f315b [2020-09-17 15:11:04,527 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c9a72b86/12de65d026734a95ba3c44c2acc3dc84 [2020-09-17 15:11:04,543 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-17 15:11:04,552 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-17 15:11:04,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-17 15:11:04,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-17 15:11:04,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-17 15:11:04,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 03:11:04" (1/1) ... [2020-09-17 15:11:04,568 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@666c9542 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:11:04, skipping insertion in model container [2020-09-17 15:11:04,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 03:11:04" (1/1) ... [2020-09-17 15:11:04,578 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-17 15:11:04,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-17 15:11:05,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 15:11:05,230 INFO L203 MainTranslator]: Completed pre-run [2020-09-17 15:11:05,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 15:11:05,398 INFO L208 MainTranslator]: Completed translation [2020-09-17 15:11:05,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:11:05 WrapperNode [2020-09-17 15:11:05,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-17 15:11:05,400 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-17 15:11:05,400 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-17 15:11:05,400 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-17 15:11:05,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:11:05" (1/1) ... [2020-09-17 15:11:05,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:11:05" (1/1) ... [2020-09-17 15:11:05,458 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-17 15:11:05,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-17 15:11:05,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-17 15:11:05,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-17 15:11:05,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:11:05" (1/1) ... [2020-09-17 15:11:05,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:11:05" (1/1) ... [2020-09-17 15:11:05,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:11:05" (1/1) ... [2020-09-17 15:11:05,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:11:05" (1/1) ... [2020-09-17 15:11:05,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:11:05" (1/1) ... [2020-09-17 15:11:05,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:11:05" (1/1) ... [2020-09-17 15:11:05,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:11:05" (1/1) ... [2020-09-17 15:11:05,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-17 15:11:05,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-17 15:11:05,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-17 15:11:05,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-17 15:11:05,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:11:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-17 15:11:05,580 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-09-17 15:11:05,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-09-17 15:11:05,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-17 15:11:05,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-17 15:11:05,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-17 15:11:05,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-17 15:11:05,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-17 15:11:05,583 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-17 15:11:05,979 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-17 15:11:05,979 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-09-17 15:11:05,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 03:11:05 BoogieIcfgContainer [2020-09-17 15:11:05,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-17 15:11:05,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-17 15:11:05,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-17 15:11:05,990 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-17 15:11:05,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 03:11:04" (1/3) ... [2020-09-17 15:11:05,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ebd0b94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 03:11:05, skipping insertion in model container [2020-09-17 15:11:05,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:11:05" (2/3) ... [2020-09-17 15:11:05,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ebd0b94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 03:11:05, skipping insertion in model container [2020-09-17 15:11:05,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 03:11:05" (3/3) ... [2020-09-17 15:11:05,995 INFO L109 eAbstractionObserver]: Analyzing ICFG 17_szymanski.i [2020-09-17 15:11:06,007 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-17 15:11:06,007 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-17 15:11:06,018 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-09-17 15:11:06,019 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-17 15:11:06,044 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:06,045 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:06,045 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:06,045 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:06,046 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:06,046 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:06,051 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:06,052 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:06,053 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:06,053 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:11:06,083 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-17 15:11:06,106 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 15:11:06,106 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 15:11:06,106 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-17 15:11:06,106 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-17 15:11:06,107 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 15:11:06,107 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 15:11:06,107 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 15:11:06,107 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 15:11:06,125 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 82 transitions, 169 flow [2020-09-17 15:11:06,128 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 82 transitions, 169 flow [2020-09-17 15:11:06,174 INFO L129 PetriNetUnfolder]: 24/81 cut-off events. [2020-09-17 15:11:06,174 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 15:11:06,182 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. [2020-09-17 15:11:06,187 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 82 transitions, 169 flow [2020-09-17 15:11:06,211 INFO L129 PetriNetUnfolder]: 24/81 cut-off events. [2020-09-17 15:11:06,211 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 15:11:06,212 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. [2020-09-17 15:11:06,218 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2400 [2020-09-17 15:11:06,223 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-17 15:11:07,006 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4373 [2020-09-17 15:11:07,007 INFO L214 etLargeBlockEncoding]: Total number of compositions: 39 [2020-09-17 15:11:07,012 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 51 transitions, 107 flow [2020-09-17 15:11:07,036 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 227 states. [2020-09-17 15:11:07,038 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states. [2020-09-17 15:11:07,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 15:11:07,050 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 15:11:07,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 15:11:07,051 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 15:11:07,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 15:11:07,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1558311805, now seen corresponding path program 1 times [2020-09-17 15:11:07,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 15:11:07,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074228572] [2020-09-17 15:11:07,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 15:11:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 15:11:07,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 15:11:07,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074228572] [2020-09-17 15:11:07,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 15:11:07,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 15:11:07,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1864137208] [2020-09-17 15:11:07,295 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-17 15:11:07,298 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-17 15:11:07,316 INFO L274 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-09-17 15:11:07,317 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-17 15:11:07,319 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-17 15:11:07,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-17 15:11:07,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 15:11:07,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-17 15:11:07,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-17 15:11:07,344 INFO L87 Difference]: Start difference. First operand 227 states. Second operand 2 states. [2020-09-17 15:11:07,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 15:11:07,362 INFO L93 Difference]: Finished difference Result 198 states and 534 transitions. [2020-09-17 15:11:07,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-17 15:11:07,364 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-09-17 15:11:07,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 15:11:07,383 INFO L225 Difference]: With dead ends: 198 [2020-09-17 15:11:07,384 INFO L226 Difference]: Without dead ends: 198 [2020-09-17 15:11:07,385 INFO L675 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 [2020-09-17 15:11:07,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-09-17 15:11:07,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-09-17 15:11:07,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-09-17 15:11:07,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 534 transitions. [2020-09-17 15:11:07,460 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 534 transitions. Word has length 9 [2020-09-17 15:11:07,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 15:11:07,461 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 534 transitions. [2020-09-17 15:11:07,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-17 15:11:07,461 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 534 transitions. [2020-09-17 15:11:07,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-17 15:11:07,463 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 15:11:07,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 15:11:07,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-17 15:11:07,463 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 15:11:07,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 15:11:07,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1031484476, now seen corresponding path program 1 times [2020-09-17 15:11:07,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 15:11:07,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175107717] [2020-09-17 15:11:07,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 15:11:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 15:11:07,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 15:11:07,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175107717] [2020-09-17 15:11:07,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 15:11:07,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 15:11:07,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1618679774] [2020-09-17 15:11:07,550 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-17 15:11:07,551 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-17 15:11:07,552 INFO L274 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-09-17 15:11:07,556 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-17 15:11:07,556 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-17 15:11:07,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 15:11:07,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 15:11:07,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 15:11:07,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 15:11:07,559 INFO L87 Difference]: Start difference. First operand 198 states and 534 transitions. Second operand 3 states. [2020-09-17 15:11:07,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 15:11:07,602 INFO L93 Difference]: Finished difference Result 362 states and 979 transitions. [2020-09-17 15:11:07,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 15:11:07,603 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-17 15:11:07,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 15:11:07,607 INFO L225 Difference]: With dead ends: 362 [2020-09-17 15:11:07,607 INFO L226 Difference]: Without dead ends: 362 [2020-09-17 15:11:07,608 INFO L675 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 [2020-09-17 15:11:07,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-09-17 15:11:07,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 221. [2020-09-17 15:11:07,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-09-17 15:11:07,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 589 transitions. [2020-09-17 15:11:07,634 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 589 transitions. Word has length 11 [2020-09-17 15:11:07,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 15:11:07,634 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 589 transitions. [2020-09-17 15:11:07,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 15:11:07,634 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 589 transitions. [2020-09-17 15:11:07,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-17 15:11:07,636 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 15:11:07,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 15:11:07,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-17 15:11:07,637 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 15:11:07,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 15:11:07,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1746695160, now seen corresponding path program 1 times [2020-09-17 15:11:07,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 15:11:07,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539423004] [2020-09-17 15:11:07,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 15:11:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 15:11:07,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 15:11:07,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539423004] [2020-09-17 15:11:07,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 15:11:07,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 15:11:07,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [668340544] [2020-09-17 15:11:07,705 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-17 15:11:07,706 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-17 15:11:07,707 INFO L274 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-09-17 15:11:07,707 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-17 15:11:07,707 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-17 15:11:07,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 15:11:07,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 15:11:07,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 15:11:07,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 15:11:07,709 INFO L87 Difference]: Start difference. First operand 221 states and 589 transitions. Second operand 3 states. [2020-09-17 15:11:07,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 15:11:07,730 INFO L93 Difference]: Finished difference Result 348 states and 934 transitions. [2020-09-17 15:11:07,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 15:11:07,730 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-17 15:11:07,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 15:11:07,734 INFO L225 Difference]: With dead ends: 348 [2020-09-17 15:11:07,734 INFO L226 Difference]: Without dead ends: 348 [2020-09-17 15:11:07,734 INFO L675 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 [2020-09-17 15:11:07,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-09-17 15:11:07,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 218. [2020-09-17 15:11:07,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-17 15:11:07,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 560 transitions. [2020-09-17 15:11:07,753 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 560 transitions. Word has length 11 [2020-09-17 15:11:07,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 15:11:07,753 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 560 transitions. [2020-09-17 15:11:07,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 15:11:07,754 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 560 transitions. [2020-09-17 15:11:07,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 15:11:07,756 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 15:11:07,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 15:11:07,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-17 15:11:07,757 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 15:11:07,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 15:11:07,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1652537164, now seen corresponding path program 1 times [2020-09-17 15:11:07,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 15:11:07,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689448725] [2020-09-17 15:11:07,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 15:11:07,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 15:11:07,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 15:11:07,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689448725] [2020-09-17 15:11:07,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 15:11:07,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 15:11:07,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [272197942] [2020-09-17 15:11:07,823 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-17 15:11:07,824 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-17 15:11:07,828 INFO L274 McrAutomatonBuilder]: Finished intersection with 35 states and 48 transitions. [2020-09-17 15:11:07,830 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-17 15:11:07,862 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-17 15:11:07,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 15:11:07,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 15:11:07,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 15:11:07,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 15:11:07,864 INFO L87 Difference]: Start difference. First operand 218 states and 560 transitions. Second operand 3 states. [2020-09-17 15:11:07,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 15:11:07,931 INFO L93 Difference]: Finished difference Result 220 states and 542 transitions. [2020-09-17 15:11:07,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 15:11:07,932 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-09-17 15:11:07,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 15:11:07,934 INFO L225 Difference]: With dead ends: 220 [2020-09-17 15:11:07,934 INFO L226 Difference]: Without dead ends: 220 [2020-09-17 15:11:07,935 INFO L675 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 [2020-09-17 15:11:07,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-09-17 15:11:07,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-09-17 15:11:07,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-09-17 15:11:07,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 542 transitions. [2020-09-17 15:11:07,949 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 542 transitions. Word has length 19 [2020-09-17 15:11:07,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 15:11:07,949 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 542 transitions. [2020-09-17 15:11:07,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 15:11:07,949 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 542 transitions. [2020-09-17 15:11:07,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 15:11:07,952 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 15:11:07,952 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 15:11:07,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-17 15:11:07,953 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 15:11:07,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 15:11:07,953 INFO L82 PathProgramCache]: Analyzing trace with hash 952506058, now seen corresponding path program 1 times [2020-09-17 15:11:07,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 15:11:07,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663075815] [2020-09-17 15:11:07,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 15:11:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 15:11:08,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 15:11:08,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663075815] [2020-09-17 15:11:08,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 15:11:08,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 15:11:08,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1865261645] [2020-09-17 15:11:08,023 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-17 15:11:08,025 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-17 15:11:08,027 INFO L274 McrAutomatonBuilder]: Finished intersection with 28 states and 34 transitions. [2020-09-17 15:11:08,028 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-17 15:11:08,038 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-17 15:11:08,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 15:11:08,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 15:11:08,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 15:11:08,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 15:11:08,040 INFO L87 Difference]: Start difference. First operand 220 states and 542 transitions. Second operand 3 states. [2020-09-17 15:11:08,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 15:11:08,120 INFO L93 Difference]: Finished difference Result 240 states and 579 transitions. [2020-09-17 15:11:08,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 15:11:08,121 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-09-17 15:11:08,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 15:11:08,124 INFO L225 Difference]: With dead ends: 240 [2020-09-17 15:11:08,124 INFO L226 Difference]: Without dead ends: 240 [2020-09-17 15:11:08,125 INFO L675 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 [2020-09-17 15:11:08,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-09-17 15:11:08,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 230. [2020-09-17 15:11:08,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-09-17 15:11:08,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 557 transitions. [2020-09-17 15:11:08,138 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 557 transitions. Word has length 19 [2020-09-17 15:11:08,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 15:11:08,139 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 557 transitions. [2020-09-17 15:11:08,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 15:11:08,139 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 557 transitions. [2020-09-17 15:11:08,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 15:11:08,142 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 15:11:08,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 15:11:08,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-17 15:11:08,142 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 15:11:08,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 15:11:08,143 INFO L82 PathProgramCache]: Analyzing trace with hash -687819132, now seen corresponding path program 2 times [2020-09-17 15:11:08,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 15:11:08,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903451588] [2020-09-17 15:11:08,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 15:11:08,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 15:11:08,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 15:11:08,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903451588] [2020-09-17 15:11:08,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 15:11:08,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 15:11:08,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [55718933] [2020-09-17 15:11:08,189 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-17 15:11:08,191 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-17 15:11:08,193 INFO L274 McrAutomatonBuilder]: Finished intersection with 28 states and 34 transitions. [2020-09-17 15:11:08,193 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-17 15:11:08,198 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-17 15:11:08,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 15:11:08,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 15:11:08,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 15:11:08,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 15:11:08,199 INFO L87 Difference]: Start difference. First operand 230 states and 557 transitions. Second operand 3 states. [2020-09-17 15:11:08,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 15:11:08,251 INFO L93 Difference]: Finished difference Result 228 states and 541 transitions. [2020-09-17 15:11:08,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 15:11:08,252 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-09-17 15:11:08,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 15:11:08,254 INFO L225 Difference]: With dead ends: 228 [2020-09-17 15:11:08,254 INFO L226 Difference]: Without dead ends: 228 [2020-09-17 15:11:08,255 INFO L675 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 [2020-09-17 15:11:08,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-09-17 15:11:08,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2020-09-17 15:11:08,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-09-17 15:11:08,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 541 transitions. [2020-09-17 15:11:08,265 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 541 transitions. Word has length 19 [2020-09-17 15:11:08,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 15:11:08,292 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 541 transitions. [2020-09-17 15:11:08,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 15:11:08,292 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 541 transitions. [2020-09-17 15:11:08,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 15:11:08,294 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 15:11:08,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 15:11:08,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-17 15:11:08,295 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 15:11:08,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 15:11:08,296 INFO L82 PathProgramCache]: Analyzing trace with hash -36638496, now seen corresponding path program 3 times [2020-09-17 15:11:08,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 15:11:08,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495441435] [2020-09-17 15:11:08,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 15:11:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 15:11:08,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 15:11:08,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495441435] [2020-09-17 15:11:08,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 15:11:08,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 15:11:08,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1372545864] [2020-09-17 15:11:08,339 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-17 15:11:08,341 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-17 15:11:08,343 INFO L274 McrAutomatonBuilder]: Finished intersection with 34 states and 46 transitions. [2020-09-17 15:11:08,343 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-17 15:11:08,351 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-17 15:11:08,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 15:11:08,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 15:11:08,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 15:11:08,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 15:11:08,353 INFO L87 Difference]: Start difference. First operand 228 states and 541 transitions. Second operand 3 states. [2020-09-17 15:11:08,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 15:11:08,392 INFO L93 Difference]: Finished difference Result 194 states and 456 transitions. [2020-09-17 15:11:08,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 15:11:08,393 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-09-17 15:11:08,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 15:11:08,393 INFO L225 Difference]: With dead ends: 194 [2020-09-17 15:11:08,394 INFO L226 Difference]: Without dead ends: 0 [2020-09-17 15:11:08,394 INFO L675 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 [2020-09-17 15:11:08,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-17 15:11:08,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-17 15:11:08,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-17 15:11:08,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-17 15:11:08,395 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-09-17 15:11:08,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 15:11:08,396 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-17 15:11:08,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 15:11:08,396 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-17 15:11:08,396 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-17 15:11:08,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-17 15:11:08,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.09 03:11:08 BasicIcfg [2020-09-17 15:11:08,402 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-17 15:11:08,406 INFO L168 Benchmark]: Toolchain (without parser) took 3859.47 ms. Allocated memory was 137.9 MB in the beginning and 253.8 MB in the end (delta: 115.9 MB). Free memory was 100.5 MB in the beginning and 205.8 MB in the end (delta: -105.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-17 15:11:08,407 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-17 15:11:08,408 INFO L168 Benchmark]: CACSL2BoogieTranslator took 842.68 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 99.9 MB in the beginning and 161.5 MB in the end (delta: -61.7 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2020-09-17 15:11:08,409 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.79 ms. Allocated memory is still 201.3 MB. Free memory was 161.5 MB in the beginning and 159.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-17 15:11:08,410 INFO L168 Benchmark]: Boogie Preprocessor took 34.08 ms. Allocated memory is still 201.3 MB. Free memory was 159.5 MB in the beginning and 158.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-17 15:11:08,411 INFO L168 Benchmark]: RCFGBuilder took 490.85 ms. Allocated memory is still 201.3 MB. Free memory was 158.1 MB in the beginning and 136.5 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-09-17 15:11:08,412 INFO L168 Benchmark]: TraceAbstraction took 2417.04 ms. Allocated memory was 201.3 MB in the beginning and 253.8 MB in the end (delta: 52.4 MB). Free memory was 135.8 MB in the beginning and 205.8 MB in the end (delta: -70.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-17 15:11:08,416 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 842.68 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 99.9 MB in the beginning and 161.5 MB in the end (delta: -61.7 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.79 ms. Allocated memory is still 201.3 MB. Free memory was 161.5 MB in the beginning and 159.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.08 ms. Allocated memory is still 201.3 MB. Free memory was 159.5 MB in the beginning and 158.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 490.85 ms. Allocated memory is still 201.3 MB. Free memory was 158.1 MB in the beginning and 136.5 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2417.04 ms. Allocated memory was 201.3 MB in the beginning and 253.8 MB in the end (delta: 52.4 MB). Free memory was 135.8 MB in the beginning and 205.8 MB in the end (delta: -70.0 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 LbeTime: 0.8s, 62 ProgramPointsBefore, 35 ProgramPointsAfterwards, 82 TransitionsBefore, 51 TransitionsAfterwards, 2400 CoEnabledTransitionPairs, 5 FixpointIterations, 9 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 4 ChoiceCompositions, 1006 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 4373 CheckedPairsTotal, 39 TotalNumberOfCompositions - 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: 2.2s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 373 SDtfs, 150 SDslu, 134 SDs, 0 SdLazy, 98 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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...