java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_CON-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label36_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ddc4263 [2018-08-08 10:41:39,518 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-08-08 10:41:39,520 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-08-08 10:41:39,532 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-08-08 10:41:39,533 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-08-08 10:41:39,534 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-08-08 10:41:39,537 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-08-08 10:41:39,540 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-08-08 10:41:39,541 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-08-08 10:41:39,542 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-08-08 10:41:39,544 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-08-08 10:41:39,546 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-08-08 10:41:39,547 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-08-08 10:41:39,550 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-08-08 10:41:39,557 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-08-08 10:41:39,558 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-08-08 10:41:39,559 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-08-08 10:41:39,564 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-08-08 10:41:39,568 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-08-08 10:41:39,569 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-08-08 10:41:39,570 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-08-08 10:41:39,573 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-08-08 10:41:39,576 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-08-08 10:41:39,576 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-08-08 10:41:39,577 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-08-08 10:41:39,578 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-08-08 10:41:39,580 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-08-08 10:41:39,581 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-08-08 10:41:39,582 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-08-08 10:41:39,583 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-08-08 10:41:39,583 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-08-08 10:41:39,584 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-08-08 10:41:39,584 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-08-08 10:41:39,584 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-08-08 10:41:39,585 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-08-08 10:41:39,589 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-08-08 10:41:39,589 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_CON-OldIcfg.epf [2018-08-08 10:41:39,607 INFO L110 SettingsManager]: Loading preferences was successful [2018-08-08 10:41:39,608 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-08-08 10:41:39,609 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-08-08 10:41:39,609 INFO L133 SettingsManager]: * User list type=DISABLED [2018-08-08 10:41:39,609 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-08-08 10:41:39,609 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-08-08 10:41:39,609 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-08-08 10:41:39,610 INFO L133 SettingsManager]: * Octagon Domain=false [2018-08-08 10:41:39,610 INFO L133 SettingsManager]: * Abstract domain=CongruenceDomain [2018-08-08 10:41:39,610 INFO L133 SettingsManager]: * Log string format=TERM [2018-08-08 10:41:39,610 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-08-08 10:41:39,610 INFO L133 SettingsManager]: * Interval Domain=false [2018-08-08 10:41:39,611 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-08-08 10:41:39,611 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-08-08 10:41:39,612 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-08-08 10:41:39,612 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-08-08 10:41:39,612 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-08-08 10:41:39,612 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-08-08 10:41:39,612 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-08-08 10:41:39,613 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-08-08 10:41:39,613 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-08-08 10:41:39,613 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-08-08 10:41:39,613 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-08-08 10:41:39,614 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-08-08 10:41:39,614 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-08 10:41:39,614 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-08-08 10:41:39,614 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-08-08 10:41:39,614 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-08-08 10:41:39,615 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-08-08 10:41:39,615 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-08-08 10:41:39,615 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-08-08 10:41:39,615 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-08-08 10:41:39,615 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-08-08 10:41:39,616 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-08-08 10:41:39,659 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-08-08 10:41:39,672 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-08-08 10:41:39,679 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-08-08 10:41:39,681 INFO L271 PluginConnector]: Initializing CDTParser... [2018-08-08 10:41:39,682 INFO L276 PluginConnector]: CDTParser initialized [2018-08-08 10:41:39,683 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label36_true-unreach-call.c [2018-08-08 10:41:40,019 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53773c50e/297baaf99a224a0dae85b0d84ee75a33/FLAGe25f8d76f [2018-08-08 10:41:40,572 INFO L276 CDTParser]: Found 1 translation units. [2018-08-08 10:41:40,573 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label36_true-unreach-call.c [2018-08-08 10:41:40,615 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53773c50e/297baaf99a224a0dae85b0d84ee75a33/FLAGe25f8d76f [2018-08-08 10:41:40,641 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53773c50e/297baaf99a224a0dae85b0d84ee75a33 [2018-08-08 10:41:40,655 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-08-08 10:41:40,658 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-08-08 10:41:40,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-08-08 10:41:40,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-08-08 10:41:40,667 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-08-08 10:41:40,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.08 10:41:40" (1/1) ... [2018-08-08 10:41:40,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71e8a85d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 10:41:40, skipping insertion in model container [2018-08-08 10:41:40,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.08 10:41:40" (1/1) ... [2018-08-08 10:41:41,082 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-08-08 10:41:42,144 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-08 10:41:42,163 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-08-08 10:41:42,856 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-08 10:41:43,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 10:41:43 WrapperNode [2018-08-08 10:41:43,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-08-08 10:41:43,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-08-08 10:41:43,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-08-08 10:41:43,132 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-08-08 10:41:43,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 10:41:43" (1/1) ... [2018-08-08 10:41:43,223 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 10:41:43" (1/1) ... [2018-08-08 10:41:43,350 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-08-08 10:41:43,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-08-08 10:41:43,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-08-08 10:41:43,351 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-08-08 10:41:44,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 10:41:43" (1/1) ... [2018-08-08 10:41:44,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 10:41:43" (1/1) ... [2018-08-08 10:41:44,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 10:41:43" (1/1) ... [2018-08-08 10:41:44,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 10:41:43" (1/1) ... [2018-08-08 10:41:44,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 10:41:43" (1/1) ... [2018-08-08 10:41:44,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 10:41:43" (1/1) ... [2018-08-08 10:41:44,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 10:41:43" (1/1) ... [2018-08-08 10:41:44,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-08-08 10:41:44,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-08-08 10:41:44,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-08-08 10:41:44,360 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-08-08 10:41:44,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 10:41:43" (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 [2018-08-08 10:41:44,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-08-08 10:41:44,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-08-08 10:41:44,435 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-08-08 10:41:44,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-08-08 10:41:44,436 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-08-08 10:41:44,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-08-08 10:41:44,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-08-08 10:41:44,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-08-08 10:41:44,436 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-08-08 10:41:44,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-08-08 10:41:44,437 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-08-08 10:41:44,437 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-08-08 10:41:44,437 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-08-08 10:41:44,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-08-08 10:42:00,838 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-08-08 10:42:00,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.08 10:42:00 BoogieIcfgContainer [2018-08-08 10:42:00,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-08-08 10:42:00,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-08-08 10:42:00,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-08-08 10:42:00,843 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-08-08 10:42:00,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.08 10:41:40" (1/3) ... [2018-08-08 10:42:00,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e911f91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.08 10:42:00, skipping insertion in model container [2018-08-08 10:42:00,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 10:41:43" (2/3) ... [2018-08-08 10:42:00,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e911f91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.08 10:42:00, skipping insertion in model container [2018-08-08 10:42:00,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.08 10:42:00" (3/3) ... [2018-08-08 10:42:00,847 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label36_true-unreach-call.c [2018-08-08 10:42:00,856 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-08-08 10:42:00,865 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-08-08 10:42:00,930 INFO L129 ementStrategyFactory]: Using default assertion order modulation [2018-08-08 10:42:00,931 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-08-08 10:42:00,931 INFO L382 AbstractCegarLoop]: Hoare is true [2018-08-08 10:42:00,931 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-08-08 10:42:00,931 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-08-08 10:42:00,931 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-08-08 10:42:00,932 INFO L386 AbstractCegarLoop]: Difference is false [2018-08-08 10:42:00,932 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-08-08 10:42:00,932 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-08-08 10:42:01,163 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-08-08 10:42:01,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-08-08 10:42:01,181 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 10:42:01,182 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-08 10:42:01,183 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-08 10:42:01,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1489180692, now seen corresponding path program 1 times [2018-08-08 10:42:01,202 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 10:42:01,203 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 65 with the following transitions: [2018-08-08 10:42:01,206 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [2360], [2364], [2370], [2374], [3269], [3270], [3271], [3273] [2018-08-08 10:42:01,240 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-08-08 10:42:01,241 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-08-08 10:42:01,778 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-08-08 10:42:01,780 INFO L272 AbstractInterpreter]: Visited 63 different actions 63 times. Never merged. Never widened. Never found a fixpoint. Largest state had 25 variables. [2018-08-08 10:42:01,823 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-08-08 10:42:02,153 INFO L232 lantSequenceWeakener]: Weakened 61 states. On average, predicates are now at 77.73% of their original sizes. [2018-08-08 10:42:02,153 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-08-08 10:42:02,303 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-08-08 10:42:02,305 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-08 10:42:02,305 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-08-08 10:42:02,305 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-08 10:42:02,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-08 10:42:02,320 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-08 10:42:02,320 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-08-08 10:42:02,323 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 5 states. [2018-08-08 10:42:15,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-08 10:42:15,869 INFO L93 Difference]: Finished difference Result 2448 states and 4699 transitions. [2018-08-08 10:42:15,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-08-08 10:42:15,871 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2018-08-08 10:42:15,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-08 10:42:15,916 INFO L225 Difference]: With dead ends: 2448 [2018-08-08 10:42:15,917 INFO L226 Difference]: Without dead ends: 1606 [2018-08-08 10:42:15,932 INFO L603 BasicCegarLoop]: 2 DeclaredPredicates, 63 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-08-08 10:42:15,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2018-08-08 10:42:16,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1604. [2018-08-08 10:42:16,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-08-08 10:42:16,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2357 transitions. [2018-08-08 10:42:16,082 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2357 transitions. Word has length 64 [2018-08-08 10:42:16,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-08 10:42:16,083 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2357 transitions. [2018-08-08 10:42:16,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-08 10:42:16,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2357 transitions. [2018-08-08 10:42:16,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-08-08 10:42:16,093 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 10:42:16,093 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-08 10:42:16,095 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-08 10:42:16,095 INFO L82 PathProgramCache]: Analyzing trace with hash -876694642, now seen corresponding path program 1 times [2018-08-08 10:42:16,095 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 10:42:16,095 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 141 with the following transitions: [2018-08-08 10:42:16,096 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [518], [1374], [2360], [2364], [2370], [2374], [2376], [3269], [3270], [3271], [3273], [3274] [2018-08-08 10:42:16,104 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-08-08 10:42:16,104 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-08-08 10:42:20,971 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-08-08 10:42:20,971 INFO L272 AbstractInterpreter]: Visited 83 different actions 159 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-08-08 10:42:20,979 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-08-08 10:42:23,017 INFO L232 lantSequenceWeakener]: Weakened 137 states. On average, predicates are now at 76.33% of their original sizes. [2018-08-08 10:42:23,017 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-08-08 10:42:23,649 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-08-08 10:42:23,649 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-08 10:42:23,650 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-08-08 10:42:23,650 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-08 10:42:23,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-08-08 10:42:23,653 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-08-08 10:42:23,653 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-08-08 10:42:23,653 INFO L87 Difference]: Start difference. First operand 1604 states and 2357 transitions. Second operand 9 states. [2018-08-08 10:42:40,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-08 10:42:40,635 INFO L93 Difference]: Finished difference Result 3976 states and 6980 transitions. [2018-08-08 10:42:40,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-08-08 10:42:40,636 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 140 [2018-08-08 10:42:40,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-08 10:42:40,660 INFO L225 Difference]: With dead ends: 3976 [2018-08-08 10:42:40,660 INFO L226 Difference]: Without dead ends: 3146 [2018-08-08 10:42:40,667 INFO L603 BasicCegarLoop]: 2 DeclaredPredicates, 145 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-08-08 10:42:40,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3146 states. [2018-08-08 10:42:40,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3146 to 3143. [2018-08-08 10:42:40,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3143 states. [2018-08-08 10:42:40,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3143 states to 3143 states and 3918 transitions. [2018-08-08 10:42:40,783 INFO L78 Accepts]: Start accepts. Automaton has 3143 states and 3918 transitions. Word has length 140 [2018-08-08 10:42:40,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-08 10:42:40,785 INFO L480 AbstractCegarLoop]: Abstraction has 3143 states and 3918 transitions. [2018-08-08 10:42:40,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-08-08 10:42:40,785 INFO L276 IsEmpty]: Start isEmpty. Operand 3143 states and 3918 transitions. [2018-08-08 10:42:40,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-08-08 10:42:40,803 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 10:42:40,804 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-08 10:42:40,804 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-08 10:42:40,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1032110814, now seen corresponding path program 1 times [2018-08-08 10:42:40,805 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 10:42:40,805 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 211 with the following transitions: [2018-08-08 10:42:40,806 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [798], [1374], [2360], [2364], [2370], [2374], [2376], [3269], [3270], [3271], [3273], [3274] [2018-08-08 10:42:40,812 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-08-08 10:42:40,815 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-08-08 10:44:18,362 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-08-08 10:44:18,363 INFO L272 AbstractInterpreter]: Visited 153 different actions 300 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-08-08 10:44:18,369 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-08-08 10:44:39,877 INFO L232 lantSequenceWeakener]: Weakened 207 states. On average, predicates are now at 75.92% of their original sizes. [2018-08-08 10:44:39,877 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-08-08 10:44:40,066 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-08-08 10:44:40,066 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-08 10:44:40,066 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-08-08 10:44:40,068 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-08 10:44:40,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-08-08 10:44:40,070 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-08-08 10:44:40,070 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-08-08 10:44:40,070 INFO L87 Difference]: Start difference. First operand 3143 states and 3918 transitions. Second operand 9 states. [2018-08-08 10:44:56,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-08 10:44:56,231 INFO L93 Difference]: Finished difference Result 4746 states and 7019 transitions. [2018-08-08 10:44:56,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-08-08 10:44:56,240 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 210 [2018-08-08 10:44:56,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-08 10:44:56,258 INFO L225 Difference]: With dead ends: 4746 [2018-08-08 10:44:56,258 INFO L226 Difference]: Without dead ends: 3916 [2018-08-08 10:44:56,262 INFO L603 BasicCegarLoop]: 2 DeclaredPredicates, 215 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-08-08 10:44:56,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3916 states. [2018-08-08 10:44:56,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3916 to 3913. [2018-08-08 10:44:56,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3913 states. [2018-08-08 10:44:56,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3913 states to 3913 states and 4717 transitions. [2018-08-08 10:44:56,350 INFO L78 Accepts]: Start accepts. Automaton has 3913 states and 4717 transitions. Word has length 210 [2018-08-08 10:44:56,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-08 10:44:56,351 INFO L480 AbstractCegarLoop]: Abstraction has 3913 states and 4717 transitions. [2018-08-08 10:44:56,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-08-08 10:44:56,351 INFO L276 IsEmpty]: Start isEmpty. Operand 3913 states and 4717 transitions. [2018-08-08 10:44:56,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-08-08 10:44:56,357 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 10:44:56,357 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-08 10:44:56,358 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-08 10:44:56,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1050799142, now seen corresponding path program 1 times [2018-08-08 10:44:56,358 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 10:44:56,358 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 215 with the following transitions: [2018-08-08 10:44:56,359 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [814], [1374], [2360], [2364], [2370], [2374], [2376], [3269], [3270], [3271], [3273], [3274] [2018-08-08 10:44:56,362 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-08-08 10:44:56,363 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown