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 -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/array-crafted/zero_sum_const_m2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 05:35:27,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 05:35:27,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 05:35:27,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-09 05:35:27,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-09 05:35:27,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-09 05:35:27,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-09 05:35:27,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-09 05:35:27,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-09 05:35:27,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-09 05:35:27,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-09 05:35:27,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-09 05:35:27,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 05:35:27,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 05:35:27,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 05:35:27,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 05:35:27,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 05:35:27,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 05:35:27,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 05:35:27,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 05:35:27,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 05:35:27,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 05:35:27,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 05:35:27,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 05:35:27,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-09 05:35:27,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-09 05:35:27,390 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-09 05:35:27,391 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-09 05:35:27,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-09 05:35:27,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-09 05:35:27,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 05:35:27,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 05:35:27,395 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 05:35:27,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 05:35:27,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 05:35:27,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 05:35:27,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 05:35:27,398 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 05:35:27,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 05:35:27,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 05:35:27,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 05:35:27,402 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-09 05:35:27,419 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 05:35:27,419 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 05:35:27,419 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 05:35:27,420 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 05:35:27,420 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 05:35:27,421 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 05:35:27,421 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 05:35:27,421 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 05:35:27,421 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 05:35:27,422 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 05:35:27,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 05:35:27,423 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 05:35:27,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 05:35:27,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 05:35:27,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 05:35:27,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 05:35:27,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 05:35:27,424 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 05:35:27,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 05:35:27,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 05:35:27,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 05:35:27,425 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 05:35:27,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 05:35:27,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 05:35:27,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 05:35:27,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 05:35:27,426 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 05:35:27,426 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 05:35:27,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 05:35:27,427 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 05:35:27,459 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 05:35:27,474 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 05:35:27,478 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 05:35:27,480 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 05:35:27,481 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 05:35:27,481 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_const_m2.c [2019-09-09 05:35:27,558 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7e613ea3/9b6e2c2b96764b49a85d333b1702b7ba/FLAG22c2f39ec [2019-09-09 05:35:28,076 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 05:35:28,077 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum_const_m2.c [2019-09-09 05:35:28,084 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7e613ea3/9b6e2c2b96764b49a85d333b1702b7ba/FLAG22c2f39ec [2019-09-09 05:35:28,463 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7e613ea3/9b6e2c2b96764b49a85d333b1702b7ba [2019-09-09 05:35:28,473 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 05:35:28,474 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 05:35:28,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 05:35:28,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 05:35:28,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 05:35:28,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:35:28" (1/1) ... [2019-09-09 05:35:28,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f95ed7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:35:28, skipping insertion in model container [2019-09-09 05:35:28,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:35:28" (1/1) ... [2019-09-09 05:35:28,493 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 05:35:28,514 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 05:35:28,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:35:28,761 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 05:35:28,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:35:28,797 INFO L192 MainTranslator]: Completed translation [2019-09-09 05:35:28,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:35:28 WrapperNode [2019-09-09 05:35:28,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 05:35:28,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 05:35:28,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 05:35:28,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 05:35:28,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:35:28" (1/1) ... [2019-09-09 05:35:28,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:35:28" (1/1) ... [2019-09-09 05:35:28,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:35:28" (1/1) ... [2019-09-09 05:35:28,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:35:28" (1/1) ... [2019-09-09 05:35:28,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:35:28" (1/1) ... [2019-09-09 05:35:28,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:35:28" (1/1) ... [2019-09-09 05:35:28,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:35:28" (1/1) ... [2019-09-09 05:35:28,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 05:35:28,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 05:35:28,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 05:35:28,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 05:35:28,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:35:28" (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 [2019-09-09 05:35:29,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 05:35:29,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 05:35:29,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-09 05:35:29,011 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 05:35:29,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 05:35:29,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-09 05:35:29,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-09 05:35:29,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-09-09 05:35:29,011 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-09 05:35:29,012 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 05:35:29,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-09 05:35:29,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-09 05:35:29,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-09 05:35:29,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 05:35:29,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 05:35:29,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-09 05:35:29,298 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 05:35:29,298 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-09 05:35:29,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:35:29 BoogieIcfgContainer [2019-09-09 05:35:29,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 05:35:29,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 05:35:29,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 05:35:29,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 05:35:29,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 05:35:28" (1/3) ... [2019-09-09 05:35:29,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@683efe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:35:29, skipping insertion in model container [2019-09-09 05:35:29,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:35:28" (2/3) ... [2019-09-09 05:35:29,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@683efe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:35:29, skipping insertion in model container [2019-09-09 05:35:29,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:35:29" (3/3) ... [2019-09-09 05:35:29,310 INFO L109 eAbstractionObserver]: Analyzing ICFG zero_sum_const_m2.c [2019-09-09 05:35:29,330 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 05:35:29,343 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 05:35:29,397 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 05:35:29,444 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 05:35:29,444 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 05:35:29,444 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 05:35:29,445 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 05:35:29,447 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 05:35:29,448 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 05:35:29,448 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 05:35:29,450 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 05:35:29,468 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-09-09 05:35:29,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-09 05:35:29,480 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:35:29,481 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:35:29,484 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:35:29,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:35:29,491 INFO L82 PathProgramCache]: Analyzing trace with hash -720839896, now seen corresponding path program 1 times [2019-09-09 05:35:29,494 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:35:29,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:35:29,539 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:35:29,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:35:29,539 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:35:29,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:35:29,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:35:29,639 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:35:29,639 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-09 05:35:29,639 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:35:29,643 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-09 05:35:29,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-09 05:35:29,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:35:29,658 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2019-09-09 05:35:29,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:35:29,680 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-09-09 05:35:29,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-09 05:35:29,682 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2019-09-09 05:35:29,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:35:29,693 INFO L225 Difference]: With dead ends: 33 [2019-09-09 05:35:29,693 INFO L226 Difference]: Without dead ends: 26 [2019-09-09 05:35:29,696 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:35:29,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-09-09 05:35:29,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-09-09 05:35:29,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-09-09 05:35:29,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2019-09-09 05:35:29,740 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 20 [2019-09-09 05:35:29,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:35:29,740 INFO L475 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2019-09-09 05:35:29,741 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-09 05:35:29,741 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2019-09-09 05:35:29,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-09 05:35:29,742 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:35:29,742 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:35:29,743 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:35:29,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:35:29,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1191176598, now seen corresponding path program 1 times [2019-09-09 05:35:29,743 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:35:29,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:35:29,745 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:35:29,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:35:29,745 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:35:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:35:29,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:35:29,882 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:35:29,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 05:35:29,882 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:35:29,884 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 05:35:29,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 05:35:29,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 05:35:29,885 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2019-09-09 05:35:29,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:35:29,983 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2019-09-09 05:35:29,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-09 05:35:29,985 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-09-09 05:35:29,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:35:29,988 INFO L225 Difference]: With dead ends: 36 [2019-09-09 05:35:29,988 INFO L226 Difference]: Without dead ends: 33 [2019-09-09 05:35:29,990 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-09 05:35:29,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-09-09 05:35:30,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-09-09 05:35:30,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-09-09 05:35:30,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2019-09-09 05:35:30,007 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 20 [2019-09-09 05:35:30,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:35:30,010 INFO L475 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2019-09-09 05:35:30,011 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 05:35:30,011 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2019-09-09 05:35:30,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-09-09 05:35:30,013 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:35:30,014 INFO L399 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] [2019-09-09 05:35:30,015 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:35:30,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:35:30,016 INFO L82 PathProgramCache]: Analyzing trace with hash -988852588, now seen corresponding path program 1 times [2019-09-09 05:35:30,017 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:35:30,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:35:30,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:35:30,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:35:30,024 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:35:30,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:35:30,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-09 05:35:30,112 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:35:30,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 05:35:30,113 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:35:30,113 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 05:35:30,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 05:35:30,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 05:35:30,114 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 3 states. [2019-09-09 05:35:30,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:35:30,188 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2019-09-09 05:35:30,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 05:35:30,190 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-09-09 05:35:30,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:35:30,191 INFO L225 Difference]: With dead ends: 35 [2019-09-09 05:35:30,193 INFO L226 Difference]: Without dead ends: 35 [2019-09-09 05:35:30,194 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 05:35:30,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-09-09 05:35:30,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2019-09-09 05:35:30,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-09-09 05:35:30,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2019-09-09 05:35:30,203 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 22 [2019-09-09 05:35:30,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:35:30,203 INFO L475 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2019-09-09 05:35:30,204 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 05:35:30,204 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2019-09-09 05:35:30,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-09-09 05:35:30,206 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:35:30,207 INFO L399 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] [2019-09-09 05:35:30,207 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:35:30,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:35:30,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1991586542, now seen corresponding path program 1 times [2019-09-09 05:35:30,208 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:35:30,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:35:30,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:35:30,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:35:30,210 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:35:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:35:30,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-09 05:35:30,333 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:35:30,333 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 05:35:30,333 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:35:30,334 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 05:35:30,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 05:35:30,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 05:35:30,335 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 4 states. [2019-09-09 05:35:30,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:35:30,419 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2019-09-09 05:35:30,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 05:35:30,419 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2019-09-09 05:35:30,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:35:30,420 INFO L225 Difference]: With dead ends: 36 [2019-09-09 05:35:30,421 INFO L226 Difference]: Without dead ends: 36 [2019-09-09 05:35:30,421 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 05:35:30,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-09-09 05:35:30,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2019-09-09 05:35:30,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-09-09 05:35:30,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2019-09-09 05:35:30,427 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 24 [2019-09-09 05:35:30,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:35:30,427 INFO L475 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-09-09 05:35:30,427 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 05:35:30,428 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2019-09-09 05:35:30,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-09-09 05:35:30,429 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:35:30,429 INFO L399 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] [2019-09-09 05:35:30,429 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:35:30,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:35:30,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1169709580, now seen corresponding path program 1 times [2019-09-09 05:35:30,430 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:35:30,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:35:30,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:35:30,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:35:30,432 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:35:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:35:30,512 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-09 05:35:30,512 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 05:35:30,513 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 05:35:30,514 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2019-09-09 05:35:30,516 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [8], [14], [16], [18], [22], [28], [30], [32], [36], [42], [44], [46], [50], [56], [58], [60], [64], [70], [72], [74], [84], [87], [89], [95], [96], [97], [99] [2019-09-09 05:35:30,564 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 05:35:30,565 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 05:35:30,684 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 05:35:30,687 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 24 root evaluator evaluations with a maximum evaluation depth of 3. Performed 24 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 32 variables. [2019-09-09 05:35:30,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:35:30,691 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 05:35:30,740 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 77.5% of their original sizes. [2019-09-09 05:35:30,740 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 05:35:30,751 INFO L420 sIntCurrentIteration]: We unified 29 AI predicates to 29 [2019-09-09 05:35:30,751 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 05:35:30,752 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 05:35:30,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2019-09-09 05:35:30,753 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:35:30,753 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 05:35:30,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 05:35:30,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 05:35:30,754 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 4 states. [2019-09-09 05:35:30,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:35:30,757 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2019-09-09 05:35:30,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 05:35:30,757 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2019-09-09 05:35:30,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:35:30,758 INFO L225 Difference]: With dead ends: 7 [2019-09-09 05:35:30,758 INFO L226 Difference]: Without dead ends: 0 [2019-09-09 05:35:30,759 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 05:35:30,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-09 05:35:30,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-09 05:35:30,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-09 05:35:30,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-09 05:35:30,760 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2019-09-09 05:35:30,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:35:30,761 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-09 05:35:30,761 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 05:35:30,761 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-09 05:35:30,761 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-09 05:35:30,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.09 05:35:30 BoogieIcfgContainer [2019-09-09 05:35:30,768 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-09 05:35:30,771 INFO L168 Benchmark]: Toolchain (without parser) took 2295.58 ms. Allocated memory was 134.7 MB in the beginning and 201.3 MB in the end (delta: 66.6 MB). Free memory was 91.0 MB in the beginning and 89.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 68.4 MB. Max. memory is 7.1 GB. [2019-09-09 05:35:30,772 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 134.7 MB. Free memory was 109.2 MB in the beginning and 109.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-09 05:35:30,773 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.09 ms. Allocated memory is still 134.7 MB. Free memory was 90.7 MB in the beginning and 80.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2019-09-09 05:35:30,775 INFO L168 Benchmark]: Boogie Preprocessor took 151.35 ms. Allocated memory was 134.7 MB in the beginning and 201.3 MB in the end (delta: 66.6 MB). Free memory was 80.5 MB in the beginning and 176.8 MB in the end (delta: -96.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2019-09-09 05:35:30,776 INFO L168 Benchmark]: RCFGBuilder took 349.58 ms. Allocated memory is still 201.3 MB. Free memory was 176.8 MB in the beginning and 160.8 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-09-09 05:35:30,777 INFO L168 Benchmark]: TraceAbstraction took 1466.88 ms. Allocated memory is still 201.3 MB. Free memory was 160.2 MB in the beginning and 89.1 MB in the end (delta: 71.1 MB). Peak memory consumption was 71.1 MB. Max. memory is 7.1 GB. [2019-09-09 05:35:30,781 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 134.7 MB. Free memory was 109.2 MB in the beginning and 109.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 323.09 ms. Allocated memory is still 134.7 MB. Free memory was 90.7 MB in the beginning and 80.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 151.35 ms. Allocated memory was 134.7 MB in the beginning and 201.3 MB in the end (delta: 66.6 MB). Free memory was 80.5 MB in the beginning and 176.8 MB in the end (delta: -96.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 349.58 ms. Allocated memory is still 201.3 MB. Free memory was 176.8 MB in the beginning and 160.8 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1466.88 ms. Allocated memory is still 201.3 MB. Free memory was 160.2 MB in the beginning and 89.1 MB in the end (delta: 71.1 MB). Peak memory consumption was 71.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 33 locations, 1 error locations. SAFE Result, 1.3s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 112 SDtfs, 37 SDslu, 84 SDs, 0 SdLazy, 78 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9698275862068966 AbsIntWeakeningRatio, 0.896551724137931 AbsIntAvgWeakeningVarsNumRemoved, 0.7586206896551724 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 111 ConstructedInterpolants, 0 QuantifiedInterpolants, 3939 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 7/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...