/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-atomic/read_write_lock-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 20:26:08,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 20:26:08,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 20:26:08,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 20:26:08,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 20:26:08,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 20:26:08,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 20:26:08,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 20:26:08,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 20:26:08,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 20:26:08,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 20:26:08,399 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 20:26:08,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 20:26:08,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 20:26:08,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 20:26:08,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 20:26:08,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 20:26:08,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 20:26:08,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 20:26:08,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 20:26:08,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 20:26:08,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 20:26:08,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 20:26:08,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 20:26:08,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-11 20:26:08,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 20:26:08,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 20:26:08,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 20:26:08,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 20:26:08,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 20:26:08,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 20:26:08,449 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 20:26:08,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 20:26:08,449 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 20:26:08,450 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 20:26:08,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 20:26:08,452 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 [2020-09-11 20:26:08,492 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 20:26:08,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 20:26:08,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 20:26:08,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 20:26:08,496 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 20:26:08,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 20:26:08,497 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 20:26:08,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 20:26:08,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 20:26:08,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 20:26:08,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 20:26:08,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 20:26:08,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 20:26:08,499 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 20:26:08,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 20:26:08,500 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 20:26:08,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 20:26:08,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 20:26:08,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 20:26:08,502 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 20:26:08,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 20:26:08,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 20:26:08,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 20:26:08,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-11 20:26:08,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 20:26:08,506 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 20:26:08,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 20:26:08,507 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-11 20:26:08,507 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-11 20:26:08,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 20:26:08,507 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-11 20:26:08,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 20:26:08,963 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 20:26:08,969 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 20:26:08,971 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 20:26:08,972 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 20:26:08,973 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2020-09-11 20:26:09,060 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1b9f93e6/3a3f48f801664f87b40ece4e67d8734d/FLAGcfe77795b [2020-09-11 20:26:09,645 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 20:26:09,648 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2020-09-11 20:26:09,679 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1b9f93e6/3a3f48f801664f87b40ece4e67d8734d/FLAGcfe77795b [2020-09-11 20:26:09,894 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1b9f93e6/3a3f48f801664f87b40ece4e67d8734d [2020-09-11 20:26:09,911 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 20:26:09,917 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 20:26:09,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 20:26:09,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 20:26:09,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 20:26:09,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:26:09" (1/1) ... [2020-09-11 20:26:09,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cf10263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:26:09, skipping insertion in model container [2020-09-11 20:26:09,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:26:09" (1/1) ... [2020-09-11 20:26:09,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 20:26:10,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 20:26:10,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 20:26:10,583 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 20:26:10,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 20:26:10,754 INFO L208 MainTranslator]: Completed translation [2020-09-11 20:26:10,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:26:10 WrapperNode [2020-09-11 20:26:10,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 20:26:10,756 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 20:26:10,756 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 20:26:10,756 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 20:26:10,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:26:10" (1/1) ... [2020-09-11 20:26:10,786 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:26:10" (1/1) ... [2020-09-11 20:26:10,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 20:26:10,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 20:26:10,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 20:26:10,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 20:26:10,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:26:10" (1/1) ... [2020-09-11 20:26:10,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:26:10" (1/1) ... [2020-09-11 20:26:10,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:26:10" (1/1) ... [2020-09-11 20:26:10,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:26:10" (1/1) ... [2020-09-11 20:26:10,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:26:10" (1/1) ... [2020-09-11 20:26:10,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:26:10" (1/1) ... [2020-09-11 20:26:10,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:26:10" (1/1) ... [2020-09-11 20:26:10,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 20:26:10,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 20:26:10,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 20:26:10,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 20:26:10,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:26:10" (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 [2020-09-11 20:26:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-11 20:26:10,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 20:26:10,934 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2020-09-11 20:26:10,934 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2020-09-11 20:26:10,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 20:26:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 20:26:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 20:26:10,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 20:26:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2020-09-11 20:26:10,935 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2020-09-11 20:26:10,938 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 20:26:11,510 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 20:26:11,511 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-11 20:26:11,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:26:11 BoogieIcfgContainer [2020-09-11 20:26:11,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 20:26:11,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 20:26:11,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 20:26:11,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 20:26:11,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 08:26:09" (1/3) ... [2020-09-11 20:26:11,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5be933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 08:26:11, skipping insertion in model container [2020-09-11 20:26:11,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:26:10" (2/3) ... [2020-09-11 20:26:11,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5be933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 08:26:11, skipping insertion in model container [2020-09-11 20:26:11,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:26:11" (3/3) ... [2020-09-11 20:26:11,527 INFO L109 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2020-09-11 20:26:11,541 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 20:26:11,541 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-11 20:26:11,552 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 20:26:11,554 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 20:26:11,595 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,595 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,595 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,596 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,596 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,596 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,597 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,597 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,597 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,598 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,598 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,599 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,599 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,599 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,599 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,600 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,600 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,600 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,600 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,601 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,601 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,602 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,602 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,602 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,603 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,603 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,603 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,603 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,604 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,604 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,604 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,605 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,605 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,605 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,605 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,605 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,606 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,606 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,611 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,611 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,611 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,611 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,612 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,612 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,618 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,618 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,618 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,619 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,619 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,619 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,619 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,621 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,622 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,622 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,622 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,623 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,623 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,625 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,625 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,626 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,626 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,626 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,626 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,627 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:11,674 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-09-11 20:26:11,704 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 20:26:11,705 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 20:26:11,705 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 20:26:11,705 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-11 20:26:11,705 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 20:26:11,706 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 20:26:11,706 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 20:26:11,706 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 20:26:11,726 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 100 transitions, 268 flow [2020-09-11 20:26:11,729 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 100 transitions, 268 flow [2020-09-11 20:26:11,800 INFO L129 PetriNetUnfolder]: 19/134 cut-off events. [2020-09-11 20:26:11,801 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-09-11 20:26:11,808 INFO L80 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 134 events. 19/134 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 336 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 91. Up to 12 conditions per place. [2020-09-11 20:26:11,814 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 100 transitions, 268 flow [2020-09-11 20:26:11,877 INFO L129 PetriNetUnfolder]: 19/134 cut-off events. [2020-09-11 20:26:11,877 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-09-11 20:26:11,880 INFO L80 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 134 events. 19/134 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 336 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 91. Up to 12 conditions per place. [2020-09-11 20:26:11,888 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2448 [2020-09-11 20:26:11,890 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 20:26:13,305 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-09-11 20:26:13,415 INFO L206 etLargeBlockEncoding]: Checked pairs total: 6576 [2020-09-11 20:26:13,415 INFO L214 etLargeBlockEncoding]: Total number of compositions: 45 [2020-09-11 20:26:13,420 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 55 transitions, 178 flow [2020-09-11 20:26:13,733 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 4306 states. [2020-09-11 20:26:13,736 INFO L276 IsEmpty]: Start isEmpty. Operand 4306 states. [2020-09-11 20:26:13,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 20:26:13,747 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:26:13,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:26:13,748 INFO L427 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 20:26:13,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:26:13,756 INFO L82 PathProgramCache]: Analyzing trace with hash -947191722, now seen corresponding path program 1 times [2020-09-11 20:26:13,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:26:13,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087914321] [2020-09-11 20:26:13,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:26:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:26:14,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:26:14,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087914321] [2020-09-11 20:26:14,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:26:14,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 20:26:14,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1301219184] [2020-09-11 20:26:14,089 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:26:14,093 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:26:14,114 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-11 20:26:14,115 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:26:14,117 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 20:26:14,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 20:26:14,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:26:14,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 20:26:14,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 20:26:14,166 INFO L87 Difference]: Start difference. First operand 4306 states. Second operand 4 states. [2020-09-11 20:26:14,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:26:14,418 INFO L93 Difference]: Finished difference Result 9727 states and 31398 transitions. [2020-09-11 20:26:14,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 20:26:14,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-09-11 20:26:14,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:26:14,521 INFO L225 Difference]: With dead ends: 9727 [2020-09-11 20:26:14,521 INFO L226 Difference]: Without dead ends: 7325 [2020-09-11 20:26:14,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 20:26:14,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7325 states. [2020-09-11 20:26:14,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7325 to 4376. [2020-09-11 20:26:14,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4376 states. [2020-09-11 20:26:14,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 14751 transitions. [2020-09-11 20:26:14,882 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 14751 transitions. Word has length 8 [2020-09-11 20:26:14,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:26:14,882 INFO L479 AbstractCegarLoop]: Abstraction has 4376 states and 14751 transitions. [2020-09-11 20:26:14,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 20:26:14,883 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 14751 transitions. [2020-09-11 20:26:14,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 20:26:14,885 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:26:14,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:26:14,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 20:26:14,886 INFO L427 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 20:26:14,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:26:14,887 INFO L82 PathProgramCache]: Analyzing trace with hash 284128253, now seen corresponding path program 1 times [2020-09-11 20:26:14,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:26:14,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558450187] [2020-09-11 20:26:14,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:26:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:26:15,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:26:15,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558450187] [2020-09-11 20:26:15,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:26:15,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 20:26:15,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1949652245] [2020-09-11 20:26:15,026 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:26:15,027 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:26:15,030 INFO L274 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-09-11 20:26:15,030 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:26:15,051 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [27203#(not (= ~r~0 0))] [2020-09-11 20:26:15,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 20:26:15,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:26:15,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 20:26:15,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 20:26:15,054 INFO L87 Difference]: Start difference. First operand 4376 states and 14751 transitions. Second operand 5 states. [2020-09-11 20:26:15,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:26:15,286 INFO L93 Difference]: Finished difference Result 6872 states and 20348 transitions. [2020-09-11 20:26:15,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 20:26:15,287 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-11 20:26:15,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:26:15,355 INFO L225 Difference]: With dead ends: 6872 [2020-09-11 20:26:15,355 INFO L226 Difference]: Without dead ends: 6776 [2020-09-11 20:26:15,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 20:26:15,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6776 states. [2020-09-11 20:26:15,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6776 to 4772. [2020-09-11 20:26:15,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4772 states. [2020-09-11 20:26:15,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4772 states to 4772 states and 14625 transitions. [2020-09-11 20:26:15,593 INFO L78 Accepts]: Start accepts. Automaton has 4772 states and 14625 transitions. Word has length 10 [2020-09-11 20:26:15,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:26:15,595 INFO L479 AbstractCegarLoop]: Abstraction has 4772 states and 14625 transitions. [2020-09-11 20:26:15,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 20:26:15,595 INFO L276 IsEmpty]: Start isEmpty. Operand 4772 states and 14625 transitions. [2020-09-11 20:26:15,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 20:26:15,597 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:26:15,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:26:15,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 20:26:15,598 INFO L427 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 20:26:15,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:26:15,598 INFO L82 PathProgramCache]: Analyzing trace with hash 78570353, now seen corresponding path program 2 times [2020-09-11 20:26:15,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:26:15,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587942855] [2020-09-11 20:26:15,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:26:15,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:26:15,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:26:15,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587942855] [2020-09-11 20:26:15,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:26:15,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 20:26:15,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [92091765] [2020-09-11 20:26:15,643 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:26:15,644 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:26:15,646 INFO L274 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-09-11 20:26:15,646 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:26:15,650 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 20:26:15,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 20:26:15,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:26:15,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 20:26:15,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:26:15,652 INFO L87 Difference]: Start difference. First operand 4772 states and 14625 transitions. Second operand 3 states. [2020-09-11 20:26:15,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:26:15,686 INFO L93 Difference]: Finished difference Result 2244 states and 5528 transitions. [2020-09-11 20:26:15,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 20:26:15,686 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-11 20:26:15,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:26:15,696 INFO L225 Difference]: With dead ends: 2244 [2020-09-11 20:26:15,697 INFO L226 Difference]: Without dead ends: 2180 [2020-09-11 20:26:15,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:26:15,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2180 states. [2020-09-11 20:26:15,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2180 to 2180. [2020-09-11 20:26:15,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2180 states. [2020-09-11 20:26:15,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 5394 transitions. [2020-09-11 20:26:15,765 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 5394 transitions. Word has length 10 [2020-09-11 20:26:15,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:26:15,765 INFO L479 AbstractCegarLoop]: Abstraction has 2180 states and 5394 transitions. [2020-09-11 20:26:15,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 20:26:15,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 5394 transitions. [2020-09-11 20:26:15,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 20:26:15,767 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:26:15,767 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:26:15,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 20:26:15,768 INFO L427 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 20:26:15,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:26:15,768 INFO L82 PathProgramCache]: Analyzing trace with hash 704389695, now seen corresponding path program 1 times [2020-09-11 20:26:15,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:26:15,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483831291] [2020-09-11 20:26:15,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:26:15,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:26:15,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:26:15,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483831291] [2020-09-11 20:26:15,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:26:15,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 20:26:15,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1263370506] [2020-09-11 20:26:15,826 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:26:15,830 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:26:15,835 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 12 transitions. [2020-09-11 20:26:15,835 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:26:15,836 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 20:26:15,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 20:26:15,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:26:15,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 20:26:15,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 20:26:15,842 INFO L87 Difference]: Start difference. First operand 2180 states and 5394 transitions. Second operand 4 states. [2020-09-11 20:26:15,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:26:15,941 INFO L93 Difference]: Finished difference Result 2507 states and 6115 transitions. [2020-09-11 20:26:15,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 20:26:15,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-11 20:26:15,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:26:15,955 INFO L225 Difference]: With dead ends: 2507 [2020-09-11 20:26:15,956 INFO L226 Difference]: Without dead ends: 1814 [2020-09-11 20:26:15,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 20:26:15,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2020-09-11 20:26:16,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1440. [2020-09-11 20:26:16,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1440 states. [2020-09-11 20:26:16,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 3564 transitions. [2020-09-11 20:26:16,020 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 3564 transitions. Word has length 12 [2020-09-11 20:26:16,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:26:16,022 INFO L479 AbstractCegarLoop]: Abstraction has 1440 states and 3564 transitions. [2020-09-11 20:26:16,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 20:26:16,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 3564 transitions. [2020-09-11 20:26:16,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 20:26:16,029 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:26:16,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:26:16,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 20:26:16,030 INFO L427 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 20:26:16,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:26:16,030 INFO L82 PathProgramCache]: Analyzing trace with hash 285424347, now seen corresponding path program 1 times [2020-09-11 20:26:16,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:26:16,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248539443] [2020-09-11 20:26:16,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:26:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:26:16,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:26:16,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248539443] [2020-09-11 20:26:16,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:26:16,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 20:26:16,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1221959198] [2020-09-11 20:26:16,185 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:26:16,187 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:26:16,194 INFO L274 McrAutomatonBuilder]: Finished intersection with 43 states and 65 transitions. [2020-09-11 20:26:16,194 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:26:16,343 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [55625#(not (= ~r~0 0))] [2020-09-11 20:26:16,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 20:26:16,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:26:16,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 20:26:16,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 20:26:16,345 INFO L87 Difference]: Start difference. First operand 1440 states and 3564 transitions. Second operand 6 states. [2020-09-11 20:26:16,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:26:16,405 INFO L93 Difference]: Finished difference Result 1734 states and 4180 transitions. [2020-09-11 20:26:16,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 20:26:16,405 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-09-11 20:26:16,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:26:16,411 INFO L225 Difference]: With dead ends: 1734 [2020-09-11 20:26:16,411 INFO L226 Difference]: Without dead ends: 1508 [2020-09-11 20:26:16,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 20:26:16,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2020-09-11 20:26:16,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1376. [2020-09-11 20:26:16,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1376 states. [2020-09-11 20:26:16,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 3414 transitions. [2020-09-11 20:26:16,456 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 3414 transitions. Word has length 19 [2020-09-11 20:26:16,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:26:16,457 INFO L479 AbstractCegarLoop]: Abstraction has 1376 states and 3414 transitions. [2020-09-11 20:26:16,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 20:26:16,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 3414 transitions. [2020-09-11 20:26:16,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 20:26:16,458 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:26:16,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:26:16,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 20:26:16,459 INFO L427 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 20:26:16,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:26:16,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1336794727, now seen corresponding path program 2 times [2020-09-11 20:26:16,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:26:16,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890055007] [2020-09-11 20:26:16,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:26:16,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:26:16,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:26:16,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890055007] [2020-09-11 20:26:16,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:26:16,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 20:26:16,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1227399639] [2020-09-11 20:26:16,526 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:26:16,529 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:26:16,537 INFO L274 McrAutomatonBuilder]: Finished intersection with 49 states and 76 transitions. [2020-09-11 20:26:16,537 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:26:16,629 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [60117#(<= 0 ~r~0)] [2020-09-11 20:26:16,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 20:26:16,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:26:16,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 20:26:16,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-11 20:26:16,631 INFO L87 Difference]: Start difference. First operand 1376 states and 3414 transitions. Second operand 6 states. [2020-09-11 20:26:16,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:26:16,663 INFO L93 Difference]: Finished difference Result 530 states and 1160 transitions. [2020-09-11 20:26:16,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 20:26:16,664 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-09-11 20:26:16,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:26:16,665 INFO L225 Difference]: With dead ends: 530 [2020-09-11 20:26:16,665 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 20:26:16,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-11 20:26:16,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 20:26:16,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 20:26:16,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 20:26:16,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 20:26:16,666 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-09-11 20:26:16,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:26:16,667 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 20:26:16,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 20:26:16,667 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 20:26:16,667 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 20:26:16,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 20:26:16,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 08:26:16 BasicIcfg [2020-09-11 20:26:16,672 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 20:26:16,675 INFO L168 Benchmark]: Toolchain (without parser) took 6761.96 ms. Allocated memory was 139.5 MB in the beginning and 296.2 MB in the end (delta: 156.8 MB). Free memory was 101.3 MB in the beginning and 157.7 MB in the end (delta: -56.3 MB). Peak memory consumption was 100.4 MB. Max. memory is 7.1 GB. [2020-09-11 20:26:16,675 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-11 20:26:16,677 INFO L168 Benchmark]: CACSL2BoogieTranslator took 836.74 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 100.6 MB in the beginning and 162.7 MB in the end (delta: -62.0 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-09-11 20:26:16,677 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.14 ms. Allocated memory is still 203.9 MB. Free memory was 162.7 MB in the beginning and 160.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-11 20:26:16,678 INFO L168 Benchmark]: Boogie Preprocessor took 36.53 ms. Allocated memory is still 203.9 MB. Free memory was 160.7 MB in the beginning and 159.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-11 20:26:16,679 INFO L168 Benchmark]: RCFGBuilder took 661.80 ms. Allocated memory is still 203.9 MB. Free memory was 158.7 MB in the beginning and 126.6 MB in the end (delta: 32.1 MB). Peak memory consumption was 32.1 MB. Max. memory is 7.1 GB. [2020-09-11 20:26:16,680 INFO L168 Benchmark]: TraceAbstraction took 5154.26 ms. Allocated memory was 203.9 MB in the beginning and 296.2 MB in the end (delta: 92.3 MB). Free memory was 125.9 MB in the beginning and 157.7 MB in the end (delta: -31.8 MB). Peak memory consumption was 60.5 MB. Max. memory is 7.1 GB. [2020-09-11 20:26:16,684 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 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 836.74 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 100.6 MB in the beginning and 162.7 MB in the end (delta: -62.0 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 62.14 ms. Allocated memory is still 203.9 MB. Free memory was 162.7 MB in the beginning and 160.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.53 ms. Allocated memory is still 203.9 MB. Free memory was 160.7 MB in the beginning and 159.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 661.80 ms. Allocated memory is still 203.9 MB. Free memory was 158.7 MB in the beginning and 126.6 MB in the end (delta: 32.1 MB). Peak memory consumption was 32.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5154.26 ms. Allocated memory was 203.9 MB in the beginning and 296.2 MB in the end (delta: 92.3 MB). Free memory was 125.9 MB in the beginning and 157.7 MB in the end (delta: -31.8 MB). Peak memory consumption was 60.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 99 ProgramPointsBefore, 56 ProgramPointsAfterwards, 100 TransitionsBefore, 55 TransitionsAfterwards, 2448 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 994 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 6576 CheckedPairsTotal, 45 TotalNumberOfCompositions - PositiveResult [Line: 700]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 462 SDtfs, 422 SDslu, 599 SDs, 0 SdLazy, 149 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4772occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 6 MinimizatonAttempts, 5459 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 2258 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...