java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label46_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 22:24:19,828 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 22:24:19,830 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 22:24:19,842 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 22:24:19,843 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 22:24:19,844 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 22:24:19,845 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 22:24:19,847 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 22:24:19,848 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 22:24:19,849 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 22:24:19,850 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 22:24:19,850 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 22:24:19,851 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 22:24:19,852 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 22:24:19,854 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 22:24:19,854 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 22:24:19,855 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 22:24:19,857 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 22:24:19,859 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 22:24:19,864 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 22:24:19,868 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 22:24:19,870 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 22:24:19,874 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-23 22:24:19,888 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 22:24:19,888 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 22:24:19,891 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 22:24:19,893 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 22:24:19,893 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf [2018-07-23 22:24:19,912 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 22:24:19,912 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 22:24:19,913 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 22:24:19,914 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 22:24:19,914 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 22:24:19,914 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 22:24:19,914 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 22:24:19,914 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 22:24:19,915 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 22:24:19,915 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 22:24:19,915 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 22:24:19,916 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 22:24:19,916 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 22:24:19,916 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 22:24:19,917 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 22:24:19,917 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 22:24:19,917 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 22:24:19,917 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 22:24:19,917 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 22:24:19,918 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 22:24:19,918 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 22:24:19,918 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 22:24:19,918 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 22:24:19,918 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 22:24:19,919 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 22:24:19,919 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 22:24:19,919 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 22:24:19,919 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 22:24:19,920 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 22:24:19,920 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 22:24:19,920 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 22:24:19,920 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 22:24:19,920 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 22:24:19,976 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 22:24:19,992 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 22:24:20,000 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 22:24:20,001 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 22:24:20,002 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 22:24:20,002 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label46_true-unreach-call.c [2018-07-23 22:24:20,364 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adab16d34/1cc35c2647f145ed87abc33b0db01743/FLAGcd475f57e [2018-07-23 22:24:20,841 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 22:24:20,842 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label46_true-unreach-call.c [2018-07-23 22:24:20,879 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adab16d34/1cc35c2647f145ed87abc33b0db01743/FLAGcd475f57e [2018-07-23 22:24:20,898 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adab16d34/1cc35c2647f145ed87abc33b0db01743 [2018-07-23 22:24:20,909 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 22:24:20,911 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 22:24:20,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 22:24:20,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 22:24:20,920 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 22:24:20,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 10:24:20" (1/1) ... [2018-07-23 22:24:20,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47d47768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:24:20, skipping insertion in model container [2018-07-23 22:24:20,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 10:24:20" (1/1) ... [2018-07-23 22:24:21,320 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 22:24:22,568 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 22:24:22,588 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 22:24:23,553 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 22:24:23,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:24:23 WrapperNode [2018-07-23 22:24:23,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 22:24:23,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 22:24:23,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 22:24:23,921 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 22:24:23,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:24:23" (1/1) ... [2018-07-23 22:24:24,060 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:24:23" (1/1) ... [2018-07-23 22:24:24,261 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 22:24:24,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 22:24:24,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 22:24:24,261 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 22:24:25,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:24:23" (1/1) ... [2018-07-23 22:24:25,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:24:23" (1/1) ... [2018-07-23 22:24:25,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:24:23" (1/1) ... [2018-07-23 22:24:25,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:24:23" (1/1) ... [2018-07-23 22:24:25,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:24:23" (1/1) ... [2018-07-23 22:24:25,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:24:23" (1/1) ... [2018-07-23 22:24:25,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:24:23" (1/1) ... [2018-07-23 22:24:25,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 22:24:25,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 22:24:25,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 22:24:25,480 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 22:24:25,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:24:23" (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 [2018-07-23 22:24:25,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 22:24:25,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 22:24:25,543 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 [2018-07-23 22:24:25,543 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 [2018-07-23 22:24:25,543 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 [2018-07-23 22:24:25,544 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 [2018-07-23 22:24:25,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 22:24:25,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 22:24:25,544 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 [2018-07-23 22:24:25,544 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 [2018-07-23 22:24:25,544 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 22:24:25,544 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 22:24:25,544 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 [2018-07-23 22:24:25,545 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 [2018-07-23 22:24:39,493 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 22:24:39,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 10:24:39 BoogieIcfgContainer [2018-07-23 22:24:39,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 22:24:39,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 22:24:39,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 22:24:39,498 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 22:24:39,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 10:24:20" (1/3) ... [2018-07-23 22:24:39,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9fef57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 10:24:39, skipping insertion in model container [2018-07-23 22:24:39,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:24:23" (2/3) ... [2018-07-23 22:24:39,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9fef57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 10:24:39, skipping insertion in model container [2018-07-23 22:24:39,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 10:24:39" (3/3) ... [2018-07-23 22:24:39,502 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label46_true-unreach-call.c [2018-07-23 22:24:39,512 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 22:24:39,522 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 22:24:39,585 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 22:24:39,586 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 22:24:39,586 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 22:24:39,586 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 22:24:39,587 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 22:24:39,587 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 22:24:39,587 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 22:24:39,587 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 22:24:39,587 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 22:24:39,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-07-23 22:24:39,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-07-23 22:24:39,651 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:24:39,652 INFO L353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 22:24:39,653 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 22:24:39,658 INFO L82 PathProgramCache]: Analyzing trace with hash 894604953, now seen corresponding path program 1 times [2018-07-23 22:24:39,660 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:24:39,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:24:39,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:24:39,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:24:39,709 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:24:39,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:24:40,257 WARN L169 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-07-23 22:24:40,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 22:24:40,324 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 22:24:40,325 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 22:24:40,325 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:24:40,332 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 22:24:40,349 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 22:24:40,349 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 22:24:40,353 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-07-23 22:24:57,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:24:57,867 INFO L93 Difference]: Finished difference Result 4105 states and 7669 transitions. [2018-07-23 22:24:57,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 22:24:57,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2018-07-23 22:24:57,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:24:57,932 INFO L225 Difference]: With dead ends: 4105 [2018-07-23 22:24:57,933 INFO L226 Difference]: Without dead ends: 2979 [2018-07-23 22:24:57,945 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 22:24:57,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2018-07-23 22:24:58,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2849. [2018-07-23 22:24:58,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2849 states. [2018-07-23 22:24:58,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2849 states to 2849 states and 5075 transitions. [2018-07-23 22:24:58,165 INFO L78 Accepts]: Start accepts. Automaton has 2849 states and 5075 transitions. Word has length 73 [2018-07-23 22:24:58,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:24:58,166 INFO L471 AbstractCegarLoop]: Abstraction has 2849 states and 5075 transitions. [2018-07-23 22:24:58,166 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 22:24:58,169 INFO L276 IsEmpty]: Start isEmpty. Operand 2849 states and 5075 transitions. [2018-07-23 22:24:58,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-23 22:24:58,179 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:24:58,180 INFO L353 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 22:24:58,180 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 22:24:58,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1495322345, now seen corresponding path program 1 times [2018-07-23 22:24:58,181 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:24:58,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:24:58,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:24:58,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:24:58,183 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:24:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:24:58,764 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 22:24:58,765 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 22:24:58,765 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 22:24:58,766 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:24:58,769 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 22:24:58,770 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 22:24:58,770 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 22:24:58,770 INFO L87 Difference]: Start difference. First operand 2849 states and 5075 transitions. Second operand 6 states. [2018-07-23 22:25:16,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:25:16,202 INFO L93 Difference]: Finished difference Result 10635 states and 19580 transitions. [2018-07-23 22:25:16,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 22:25:16,202 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2018-07-23 22:25:16,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:25:16,253 INFO L225 Difference]: With dead ends: 10635 [2018-07-23 22:25:16,254 INFO L226 Difference]: Without dead ends: 7792 [2018-07-23 22:25:16,274 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-23 22:25:16,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7792 states. [2018-07-23 22:25:16,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7792 to 7729. [2018-07-23 22:25:16,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7729 states. [2018-07-23 22:25:16,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7729 states to 7729 states and 12373 transitions. [2018-07-23 22:25:16,491 INFO L78 Accepts]: Start accepts. Automaton has 7729 states and 12373 transitions. Word has length 144 [2018-07-23 22:25:16,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:25:16,492 INFO L471 AbstractCegarLoop]: Abstraction has 7729 states and 12373 transitions. [2018-07-23 22:25:16,492 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 22:25:16,492 INFO L276 IsEmpty]: Start isEmpty. Operand 7729 states and 12373 transitions. [2018-07-23 22:25:16,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-07-23 22:25:16,497 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:25:16,498 INFO L353 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, 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] [2018-07-23 22:25:16,498 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 22:25:16,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1011599580, now seen corresponding path program 1 times [2018-07-23 22:25:16,499 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:25:16,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:25:16,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:25:16,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:25:16,500 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:25:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:25:16,898 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 22:25:16,899 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 22:25:16,899 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 22:25:16,899 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:25:16,900 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 22:25:16,900 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 22:25:16,900 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 22:25:16,902 INFO L87 Difference]: Start difference. First operand 7729 states and 12373 transitions. Second operand 6 states. [2018-07-23 22:25:33,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:25:33,531 INFO L93 Difference]: Finished difference Result 25316 states and 42417 transitions. [2018-07-23 22:25:33,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 22:25:33,531 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2018-07-23 22:25:33,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:25:33,615 INFO L225 Difference]: With dead ends: 25316 [2018-07-23 22:25:33,615 INFO L226 Difference]: Without dead ends: 17593 [2018-07-23 22:25:33,667 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-23 22:25:33,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17593 states. [2018-07-23 22:25:34,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17593 to 17518. [2018-07-23 22:25:34,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17518 states. [2018-07-23 22:25:34,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17518 states to 17518 states and 26075 transitions. [2018-07-23 22:25:34,123 INFO L78 Accepts]: Start accepts. Automaton has 17518 states and 26075 transitions. Word has length 147 [2018-07-23 22:25:34,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:25:34,124 INFO L471 AbstractCegarLoop]: Abstraction has 17518 states and 26075 transitions. [2018-07-23 22:25:34,124 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 22:25:34,124 INFO L276 IsEmpty]: Start isEmpty. Operand 17518 states and 26075 transitions. [2018-07-23 22:25:34,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-07-23 22:25:34,135 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:25:34,136 INFO L353 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, 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] [2018-07-23 22:25:34,136 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 22:25:34,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1751133017, now seen corresponding path program 1 times [2018-07-23 22:25:34,137 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:25:34,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:25:34,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:25:34,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:25:34,143 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:25:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:25:34,485 WARN L169 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 22:25:34,825 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 22:25:34,826 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 22:25:34,826 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 22:25:34,826 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:25:34,827 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 22:25:34,827 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 22:25:34,827 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 22:25:34,828 INFO L87 Difference]: Start difference. First operand 17518 states and 26075 transitions. Second operand 6 states. [2018-07-23 22:25:47,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:25:47,106 INFO L93 Difference]: Finished difference Result 45753 states and 75639 transitions. [2018-07-23 22:25:47,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 22:25:47,107 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 211 [2018-07-23 22:25:47,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:25:47,273 INFO L225 Difference]: With dead ends: 45753 [2018-07-23 22:25:47,273 INFO L226 Difference]: Without dead ends: 28241 [2018-07-23 22:25:47,334 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-23 22:25:47,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28241 states. [2018-07-23 22:25:48,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28241 to 28077. [2018-07-23 22:25:48,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28077 states. [2018-07-23 22:25:48,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28077 states to 28077 states and 42424 transitions. [2018-07-23 22:25:48,171 INFO L78 Accepts]: Start accepts. Automaton has 28077 states and 42424 transitions. Word has length 211 [2018-07-23 22:25:48,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:25:48,172 INFO L471 AbstractCegarLoop]: Abstraction has 28077 states and 42424 transitions. [2018-07-23 22:25:48,172 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 22:25:48,172 INFO L276 IsEmpty]: Start isEmpty. Operand 28077 states and 42424 transitions. [2018-07-23 22:25:48,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-07-23 22:25:48,193 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:25:48,193 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-23 22:25:48,195 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 22:25:48,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1366876181, now seen corresponding path program 1 times [2018-07-23 22:25:48,195 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:25:48,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:25:48,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:25:48,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:25:48,197 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:25:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:25:48,740 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 132 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-23 22:25:48,741 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 22:25:48,741 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 22:25:48,744 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 236 with the following transitions: [2018-07-23 22:25:48,747 INFO L201 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], [417], [425], [433], [441], [449], [457], [465], [473], [481], [485], [487], [490], [495], [499], [502], [503], [507], [511], [522], [526], [530], [534], [538], [542], [553], [557], [561], [565], [569], [573], [577], [581], [592], [595], [1612], [3064], [3068], [3074], [3078], [3080], [4267], [4268], [4269], [4271], [4272] [2018-07-23 22:25:48,864 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 22:25:48,865 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 22:25:56,927 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 22:25:56,929 INFO L272 AbstractInterpreter]: Visited 95 different actions 95 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-07-23 22:25:56,969 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 22:26:02,885 INFO L232 lantSequenceWeakener]: Weakened 227 states. On average, predicates are now at 71.82% of their original sizes. [2018-07-23 22:26:02,885 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 22:26:03,345 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 22:26:03,346 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 22:26:03,347 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-07-23 22:26:03,347 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:26:03,348 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 22:26:03,348 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 22:26:03,348 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-23 22:26:03,348 INFO L87 Difference]: Start difference. First operand 28077 states and 42424 transitions. Second operand 7 states. [2018-07-23 22:26:25,453 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown