/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/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/jm2006_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:11:40,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:11:40,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:11:40,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:11:40,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:11:40,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:11:40,485 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:11:40,487 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:11:40,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:11:40,490 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:11:40,491 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:11:40,493 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:11:40,493 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:11:40,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:11:40,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:11:40,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:11:40,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:11:40,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:11:40,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:11:40,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:11:40,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:11:40,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:11:40,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:11:40,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:11:40,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:11:40,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:11:40,513 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:11:40,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:11:40,514 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:11:40,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:11:40,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:11:40,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:11:40,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:11:40,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:11:40,520 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:11:40,520 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:11:40,521 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:11:40,521 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:11:40,522 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:11:40,523 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:11:40,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:11:40,525 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 16:11:40,552 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:11:40,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:11:40,553 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:11:40,554 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:11:40,554 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:11:40,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:11:40,554 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:11:40,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:11:40,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:11:40,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:11:40,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:11:40,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:11:40,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:11:40,556 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:11:40,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:11:40,556 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:11:40,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:11:40,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:11:40,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:11:40,557 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:11:40,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:11:40,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:11:40,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:11:40,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:11:40,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:11:40,558 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:11:40,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:11:40,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:11:40,559 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:11:40,559 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 16:11:41,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:11:41,035 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:11:41,040 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:11:41,042 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:11:41,042 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:11:41,043 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006_variant.i [2020-09-24 16:11:41,142 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89e0f26d1/39b62119e16440709bd627f47638fed9/FLAGa5e7cfbdb [2020-09-24 16:11:41,695 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:11:41,696 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/jm2006_variant.i [2020-09-24 16:11:41,703 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89e0f26d1/39b62119e16440709bd627f47638fed9/FLAGa5e7cfbdb [2020-09-24 16:11:42,052 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89e0f26d1/39b62119e16440709bd627f47638fed9 [2020-09-24 16:11:42,068 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:11:42,074 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:11:42,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:11:42,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:11:42,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:11:42,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:11:42" (1/1) ... [2020-09-24 16:11:42,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30a48022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:42, skipping insertion in model container [2020-09-24 16:11:42,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:11:42" (1/1) ... [2020-09-24 16:11:42,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:11:42,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:11:42,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:11:42,341 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:11:42,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:11:42,377 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:11:42,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:42 WrapperNode [2020-09-24 16:11:42,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:11:42,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:11:42,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:11:42,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:11:42,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:42" (1/1) ... [2020-09-24 16:11:42,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:42" (1/1) ... [2020-09-24 16:11:42,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:42" (1/1) ... [2020-09-24 16:11:42,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:42" (1/1) ... [2020-09-24 16:11:42,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:42" (1/1) ... [2020-09-24 16:11:42,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:42" (1/1) ... [2020-09-24 16:11:42,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:42" (1/1) ... [2020-09-24 16:11:42,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:11:42,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:11:42,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:11:42,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:11:42,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:42" (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 [2020-09-24 16:11:42,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:11:42,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:11:42,590 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 16:11:42,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 16:11:42,591 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:11:42,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:11:42,591 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 16:11:42,591 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 16:11:42,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 16:11:42,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:11:42,592 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:11:42,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:11:42,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:11:42,901 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:11:42,902 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 16:11:42,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:11:42 BoogieIcfgContainer [2020-09-24 16:11:42,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:11:42,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:11:42,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:11:42,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:11:42,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:11:42" (1/3) ... [2020-09-24 16:11:42,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bfd638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:11:42, skipping insertion in model container [2020-09-24 16:11:42,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:42" (2/3) ... [2020-09-24 16:11:42,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bfd638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:11:42, skipping insertion in model container [2020-09-24 16:11:42,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:11:42" (3/3) ... [2020-09-24 16:11:42,938 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006_variant.i [2020-09-24 16:11:42,951 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:11:42,962 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:11:42,989 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:11:43,028 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:11:43,029 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:11:43,029 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:11:43,029 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:11:43,029 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:11:43,029 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:11:43,030 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:11:43,030 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:11:43,056 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-09-24 16:11:43,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-24 16:11:43,064 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:43,065 INFO L422 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] [2020-09-24 16:11:43,065 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:43,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:43,072 INFO L82 PathProgramCache]: Analyzing trace with hash 394160949, now seen corresponding path program 1 times [2020-09-24 16:11:43,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:43,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198441094] [2020-09-24 16:11:43,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:43,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:43,224 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:43,225 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:43,225 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:43,225 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:43,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 16:11:43,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:43,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 16:11:43,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:43,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:43,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 16:11:43,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:43,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:43,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:43,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:43,271 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:43,271 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:43,271 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:43,271 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:43,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:43,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:43,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:11:43,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:43,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:43,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:43,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:43,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:43,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:11:43,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198441094] [2020-09-24 16:11:43,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:11:43,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-24 16:11:43,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217896517] [2020-09-24 16:11:43,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-24 16:11:43,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:43,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-24 16:11:43,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 16:11:43,313 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2020-09-24 16:11:43,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:43,341 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2020-09-24 16:11:43,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-24 16:11:43,342 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2020-09-24 16:11:43,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:43,353 INFO L225 Difference]: With dead ends: 53 [2020-09-24 16:11:43,353 INFO L226 Difference]: Without dead ends: 31 [2020-09-24 16:11:43,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 16:11:43,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-24 16:11:43,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-24 16:11:43,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-24 16:11:43,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-09-24 16:11:43,413 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 23 [2020-09-24 16:11:43,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:43,414 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-09-24 16:11:43,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-24 16:11:43,414 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-09-24 16:11:43,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-24 16:11:43,415 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:43,415 INFO L422 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] [2020-09-24 16:11:43,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:11:43,416 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:43,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:43,417 INFO L82 PathProgramCache]: Analyzing trace with hash 79240288, now seen corresponding path program 1 times [2020-09-24 16:11:43,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:43,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857775337] [2020-09-24 16:11:43,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:43,501 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:43,502 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:43,502 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:43,502 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:43,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 16:11:43,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:43,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 16:11:43,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:43,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 16:11:43,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 16:11:43,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 16:11:43,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:43,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:43,811 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:43,812 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:43,812 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:43,812 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:43,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:43,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:43,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:43,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:43,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:43,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:43,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:43,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:43,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:11:43,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857775337] [2020-09-24 16:11:43,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:11:43,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 16:11:43,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337250329] [2020-09-24 16:11:43,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 16:11:43,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:43,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 16:11:43,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 16:11:43,825 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 9 states. [2020-09-24 16:11:44,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:44,128 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2020-09-24 16:11:44,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 16:11:44,129 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-09-24 16:11:44,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:44,131 INFO L225 Difference]: With dead ends: 40 [2020-09-24 16:11:44,131 INFO L226 Difference]: Without dead ends: 34 [2020-09-24 16:11:44,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-09-24 16:11:44,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-24 16:11:44,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-09-24 16:11:44,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-24 16:11:44,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-09-24 16:11:44,142 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 23 [2020-09-24 16:11:44,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:44,143 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-09-24 16:11:44,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 16:11:44,143 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-09-24 16:11:44,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 16:11:44,145 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:44,145 INFO L422 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] [2020-09-24 16:11:44,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:11:44,145 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:44,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:44,146 INFO L82 PathProgramCache]: Analyzing trace with hash 821188708, now seen corresponding path program 1 times [2020-09-24 16:11:44,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:44,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13650963] [2020-09-24 16:11:44,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:44,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:44,285 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:44,286 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:44,286 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:44,286 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:44,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 16:11:44,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:44,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-24 16:11:44,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:44,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 16:11:44,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 16:11:44,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 16:11:44,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:44,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:44,683 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:44,683 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:44,683 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:44,684 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:44,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:44,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:44,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:44,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:44,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:44,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:44,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:44,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:44,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:11:44,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13650963] [2020-09-24 16:11:44,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:11:44,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 16:11:44,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28240637] [2020-09-24 16:11:44,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 16:11:44,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:44,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 16:11:44,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-09-24 16:11:44,694 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 14 states. [2020-09-24 16:11:45,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:45,050 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2020-09-24 16:11:45,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 16:11:45,050 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2020-09-24 16:11:45,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:45,051 INFO L225 Difference]: With dead ends: 48 [2020-09-24 16:11:45,051 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 16:11:45,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2020-09-24 16:11:45,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 16:11:45,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-09-24 16:11:45,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-24 16:11:45,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2020-09-24 16:11:45,060 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 31 [2020-09-24 16:11:45,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:45,060 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2020-09-24 16:11:45,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 16:11:45,061 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2020-09-24 16:11:45,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-24 16:11:45,062 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:45,062 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 16:11:45,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:11:45,063 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:45,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:45,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1866551400, now seen corresponding path program 2 times [2020-09-24 16:11:45,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:45,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240628618] [2020-09-24 16:11:45,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:45,173 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:45,173 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:45,174 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:45,174 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:45,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 16:11:45,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:45,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-24 16:11:45,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:45,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 16:11:45,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 16:11:45,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 16:11:45,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:45,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:45,796 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:45,797 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:45,798 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:45,798 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:45,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:45,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:45,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:45,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:45,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:45,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:45,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:45,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 16:11:45,810 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:11:45,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240628618] [2020-09-24 16:11:45,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:11:45,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 16:11:45,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457001701] [2020-09-24 16:11:45,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 16:11:45,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:45,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 16:11:45,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2020-09-24 16:11:45,813 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 19 states. [2020-09-24 16:11:46,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:46,463 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2020-09-24 16:11:46,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 16:11:46,463 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 39 [2020-09-24 16:11:46,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:46,465 INFO L225 Difference]: With dead ends: 40 [2020-09-24 16:11:46,465 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 16:11:46,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=113, Invalid=757, Unknown=0, NotChecked=0, Total=870 [2020-09-24 16:11:46,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 16:11:46,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 16:11:46,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 16:11:46,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 16:11:46,467 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2020-09-24 16:11:46,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:46,467 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 16:11:46,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 16:11:46,468 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 16:11:46,468 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 16:11:46,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:11:46,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 16:11:46,582 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 16:11:46,582 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 16:11:46,582 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 16:11:46,582 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 16:11:46,582 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 16:11:46,582 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 16:11:46,583 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-24 16:11:46,583 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-24 16:11:46,583 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-24 16:11:46,583 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-24 16:11:46,583 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-24 16:11:46,583 INFO L268 CegarLoopResult]: For program point L27(lines 27 29) no Hoare annotation was computed. [2020-09-24 16:11:46,583 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 16:11:46,584 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 31) no Hoare annotation was computed. [2020-09-24 16:11:46,584 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-09-24 16:11:46,584 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-24 16:11:46,584 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-09-24 16:11:46,584 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-24 16:11:46,584 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-24 16:11:46,584 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-24 16:11:46,585 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 16:11:46,585 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 16:11:46,585 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-24 16:11:46,585 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 16:11:46,585 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 16:11:46,585 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-24 16:11:46,585 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 31) no Hoare annotation was computed. [2020-09-24 16:11:46,586 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 31) the Hoare annotation is: true [2020-09-24 16:11:46,586 INFO L264 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (let ((.cse0 (+ main_~y~0 main_~z~0))) (and (<= .cse0 0) (<= 0 .cse0))) [2020-09-24 16:11:46,586 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 16:11:46,586 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 16:11:46,587 INFO L264 CegarLoopResult]: At program point L22-2(lines 22 26) the Hoare annotation is: (or (let ((.cse0 (+ main_~y~0 main_~z~0))) (and (<= .cse0 main_~x~0) (<= main_~x~0 .cse0))) (not (= main_~i~0 main_~j~0))) [2020-09-24 16:11:46,587 INFO L268 CegarLoopResult]: For program point L22-3(lines 13 31) no Hoare annotation was computed. [2020-09-24 16:11:46,587 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 16:11:46,587 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-24 16:11:46,587 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 16:11:46,587 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-24 16:11:46,587 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-24 16:11:46,588 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-24 16:11:46,588 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-24 16:11:46,588 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-24 16:11:46,588 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 16:11:46,588 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-24 16:11:46,588 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-24 16:11:46,588 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-24 16:11:46,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:11:46 BoogieIcfgContainer [2020-09-24 16:11:46,610 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:11:46,613 INFO L168 Benchmark]: Toolchain (without parser) took 4542.08 ms. Allocated memory was 139.5 MB in the beginning and 247.5 MB in the end (delta: 108.0 MB). Free memory was 101.8 MB in the beginning and 101.7 MB in the end (delta: 165.4 kB). Peak memory consumption was 108.2 MB. Max. memory is 7.1 GB. [2020-09-24 16:11:46,614 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 16:11:46,615 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.58 ms. Allocated memory is still 139.5 MB. Free memory was 101.2 MB in the beginning and 91.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-24 16:11:46,616 INFO L168 Benchmark]: Boogie Preprocessor took 112.27 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 91.5 MB in the beginning and 181.8 MB in the end (delta: -90.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-09-24 16:11:46,617 INFO L168 Benchmark]: RCFGBuilder took 426.86 ms. Allocated memory is still 201.9 MB. Free memory was 180.9 MB in the beginning and 166.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2020-09-24 16:11:46,618 INFO L168 Benchmark]: TraceAbstraction took 3687.90 ms. Allocated memory was 201.9 MB in the beginning and 247.5 MB in the end (delta: 45.6 MB). Free memory was 166.1 MB in the beginning and 101.7 MB in the end (delta: 64.5 MB). Peak memory consumption was 110.1 MB. Max. memory is 7.1 GB. [2020-09-24 16:11:46,622 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 302.58 ms. Allocated memory is still 139.5 MB. Free memory was 101.2 MB in the beginning and 91.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.27 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 91.5 MB in the beginning and 181.8 MB in the end (delta: -90.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 426.86 ms. Allocated memory is still 201.9 MB. Free memory was 180.9 MB in the beginning and 166.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3687.90 ms. Allocated memory was 201.9 MB in the beginning and 247.5 MB in the end (delta: 45.6 MB). Free memory was 166.1 MB in the beginning and 101.7 MB in the end (delta: 64.5 MB). Peak memory consumption was 110.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (y + z <= x && x <= y + z) || !(i == j) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 111 SDtfs, 50 SDslu, 407 SDs, 0 SdLazy, 434 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 15 NumberOfFragments, 32 HoareAnnotationTreeSize, 10 FomulaSimplifications, 88 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 91 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 24136 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/11 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...