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_m3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:29:38,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:29:38,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:29:38,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 16:29:38,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 16:29:38,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 16:29:38,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 16:29:38,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 16:29:38,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 16:29:38,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 16:29:38,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 16:29:38,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 16:29:38,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 16:29:38,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 16:29:38,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 16:29:38,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 16:29:38,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 16:29:38,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 16:29:38,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 16:29:38,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 16:29:38,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 16:29:38,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 16:29:38,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 16:29:38,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 16:29:38,559 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 16:29:38,559 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 16:29:38,559 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 16:29:38,560 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 16:29:38,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 16:29:38,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 16:29:38,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 16:29:38,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 16:29:38,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 16:29:38,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 16:29:38,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 16:29:38,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 16:29:38,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 16:29:38,571 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 16:29:38,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 16:29:38,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 16:29:38,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 16:29:38,573 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 [2019-10-02 16:29:38,595 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:29:38,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:29:38,596 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:29:38,596 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:29:38,597 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:29:38,597 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:29:38,597 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:29:38,598 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:29:38,598 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:29:38,598 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:29:38,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:29:38,599 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:29:38,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:29:38,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:29:38,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:29:38,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:29:38,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:29:38,601 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:29:38,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:29:38,601 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:29:38,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:29:38,601 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:29:38,602 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:29:38,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:29:38,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:29:38,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:29:38,603 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:29:38,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:29:38,603 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:29:38,603 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:29:38,649 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:29:38,670 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:29:38,673 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:29:38,675 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:29:38,676 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:29:38,677 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_m3.c [2019-10-02 16:29:38,749 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f585d381/59e49674604044b99d6f49f66dff8044/FLAG617e606fc [2019-10-02 16:29:39,220 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:29:39,220 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum_m3.c [2019-10-02 16:29:39,228 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f585d381/59e49674604044b99d6f49f66dff8044/FLAG617e606fc [2019-10-02 16:29:39,600 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f585d381/59e49674604044b99d6f49f66dff8044 [2019-10-02 16:29:39,611 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:29:39,613 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:29:39,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:29:39,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:29:39,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:29:39,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:29:39" (1/1) ... [2019-10-02 16:29:39,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ac730e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:39, skipping insertion in model container [2019-10-02 16:29:39,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:29:39" (1/1) ... [2019-10-02 16:29:39,629 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:29:39,645 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:29:39,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:29:39,843 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:29:39,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:29:39,981 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:29:39,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:39 WrapperNode [2019-10-02 16:29:39,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:29:39,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:29:39,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:29:39,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:29:39,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:39" (1/1) ... [2019-10-02 16:29:39,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:39" (1/1) ... [2019-10-02 16:29:40,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:39" (1/1) ... [2019-10-02 16:29:40,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:39" (1/1) ... [2019-10-02 16:29:40,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:39" (1/1) ... [2019-10-02 16:29:40,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:39" (1/1) ... [2019-10-02 16:29:40,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:39" (1/1) ... [2019-10-02 16:29:40,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:29:40,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:29:40,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:29:40,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:29:40,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:39" (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 [2019-10-02 16:29:40,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:29:40,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:29:40,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 16:29:40,088 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:29:40,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:29:40,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-02 16:29:40,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 16:29:40,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2019-10-02 16:29:40,089 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:29:40,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 16:29:40,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 16:29:40,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 16:29:40,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 16:29:40,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:29:40,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:29:40,450 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:29:40,450 INFO L283 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-02 16:29:40,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:29:40 BoogieIcfgContainer [2019-10-02 16:29:40,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:29:40,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:29:40,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:29:40,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:29:40,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:29:39" (1/3) ... [2019-10-02 16:29:40,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a6574a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:29:40, skipping insertion in model container [2019-10-02 16:29:40,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:39" (2/3) ... [2019-10-02 16:29:40,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a6574a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:29:40, skipping insertion in model container [2019-10-02 16:29:40,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:29:40" (3/3) ... [2019-10-02 16:29:40,460 INFO L109 eAbstractionObserver]: Analyzing ICFG zero_sum_m3.c [2019-10-02 16:29:40,470 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:29:40,479 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:29:40,496 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:29:40,523 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:29:40,523 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:29:40,523 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:29:40,523 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:29:40,524 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:29:40,524 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:29:40,524 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:29:40,524 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:29:40,539 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2019-10-02 16:29:40,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-02 16:29:40,548 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:40,549 INFO L411 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] [2019-10-02 16:29:40,551 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:40,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:40,556 INFO L82 PathProgramCache]: Analyzing trace with hash -604531369, now seen corresponding path program 1 times [2019-10-02 16:29:40,559 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:40,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:40,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:40,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:40,616 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:40,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:29:40,704 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:40,705 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 16:29:40,705 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:40,710 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:29:40,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:29:40,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:29:40,730 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2019-10-02 16:29:40,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:40,751 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2019-10-02 16:29:40,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:29:40,753 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2019-10-02 16:29:40,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:40,764 INFO L225 Difference]: With dead ends: 40 [2019-10-02 16:29:40,764 INFO L226 Difference]: Without dead ends: 32 [2019-10-02 16:29:40,766 INFO L640 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 [2019-10-02 16:29:40,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-10-02 16:29:40,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-10-02 16:29:40,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-10-02 16:29:40,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2019-10-02 16:29:40,815 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 24 [2019-10-02 16:29:40,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:40,815 INFO L475 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2019-10-02 16:29:40,816 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:29:40,816 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2019-10-02 16:29:40,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-02 16:29:40,817 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:40,817 INFO L411 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] [2019-10-02 16:29:40,818 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:40,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:40,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1170586821, now seen corresponding path program 1 times [2019-10-02 16:29:40,818 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:40,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:40,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:40,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:40,821 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:40,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:41,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:29:41,062 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:41,062 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 16:29:41,062 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:41,064 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 16:29:41,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 16:29:41,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 16:29:41,067 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 5 states. [2019-10-02 16:29:41,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:41,172 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2019-10-02 16:29:41,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-02 16:29:41,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-10-02 16:29:41,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:41,174 INFO L225 Difference]: With dead ends: 46 [2019-10-02 16:29:41,175 INFO L226 Difference]: Without dead ends: 43 [2019-10-02 16:29:41,176 INFO L640 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 [2019-10-02 16:29:41,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-10-02 16:29:41,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-10-02 16:29:41,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-10-02 16:29:41,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2019-10-02 16:29:41,184 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 24 [2019-10-02 16:29:41,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:41,185 INFO L475 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2019-10-02 16:29:41,185 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 16:29:41,185 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2019-10-02 16:29:41,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-02 16:29:41,186 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:41,187 INFO L411 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] [2019-10-02 16:29:41,187 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:41,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:41,188 INFO L82 PathProgramCache]: Analyzing trace with hash 669656451, now seen corresponding path program 1 times [2019-10-02 16:29:41,188 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:41,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:41,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:41,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:41,191 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:41,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-02 16:29:41,284 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:41,284 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:29:41,284 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:41,285 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:29:41,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:29:41,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:41,286 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand 3 states. [2019-10-02 16:29:41,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:41,340 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2019-10-02 16:29:41,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:29:41,341 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2019-10-02 16:29:41,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:41,342 INFO L225 Difference]: With dead ends: 45 [2019-10-02 16:29:41,342 INFO L226 Difference]: Without dead ends: 45 [2019-10-02 16:29:41,343 INFO L640 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 [2019-10-02 16:29:41,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-02 16:29:41,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2019-10-02 16:29:41,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-10-02 16:29:41,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2019-10-02 16:29:41,350 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 26 [2019-10-02 16:29:41,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:41,350 INFO L475 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2019-10-02 16:29:41,351 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:29:41,351 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2019-10-02 16:29:41,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-02 16:29:41,352 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:41,352 INFO L411 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] [2019-10-02 16:29:41,353 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:41,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:41,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1075251265, now seen corresponding path program 1 times [2019-10-02 16:29:41,353 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:41,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:41,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:41,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:41,355 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:41,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-02 16:29:41,412 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:41,412 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 16:29:41,412 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:41,413 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 16:29:41,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 16:29:41,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:29:41,413 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand 4 states. [2019-10-02 16:29:41,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:41,530 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2019-10-02 16:29:41,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 16:29:41,531 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2019-10-02 16:29:41,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:41,532 INFO L225 Difference]: With dead ends: 45 [2019-10-02 16:29:41,532 INFO L226 Difference]: Without dead ends: 45 [2019-10-02 16:29:41,533 INFO L640 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 [2019-10-02 16:29:41,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-02 16:29:41,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2019-10-02 16:29:41,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-10-02 16:29:41,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2019-10-02 16:29:41,539 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 28 [2019-10-02 16:29:41,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:41,539 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2019-10-02 16:29:41,540 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 16:29:41,540 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2019-10-02 16:29:41,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-02 16:29:41,541 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:41,541 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:41,542 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:41,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:41,542 INFO L82 PathProgramCache]: Analyzing trace with hash -215297609, now seen corresponding path program 1 times [2019-10-02 16:29:41,543 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:41,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:41,544 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:41,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:41,545 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:41,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:41,637 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-02 16:29:41,637 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:29:41,638 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 16:29:41,639 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 39 with the following transitions: [2019-10-02 16:29:41,641 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], [78], [84], [86], [88], [92], [98], [100], [102], [113], [116], [118], [124], [125], [126], [128] [2019-10-02 16:29:41,690 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 16:29:41,690 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 16:29:41,782 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 16:29:41,784 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 2. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Never found a fixpoint. Largest state had 34 variables. [2019-10-02 16:29:41,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:41,788 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 16:29:41,837 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96.67% of their original sizes. [2019-10-02 16:29:41,837 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 16:29:41,842 INFO L420 sIntCurrentIteration]: We unified 37 AI predicates to 37 [2019-10-02 16:29:41,843 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 16:29:41,844 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 16:29:41,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2019-10-02 16:29:41,844 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:41,845 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:29:41,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:29:41,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:41,846 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 3 states. [2019-10-02 16:29:41,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:41,848 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2019-10-02 16:29:41,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:29:41,848 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2019-10-02 16:29:41,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:41,849 INFO L225 Difference]: With dead ends: 7 [2019-10-02 16:29:41,849 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 16:29:41,850 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:41,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 16:29:41,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 16:29:41,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 16:29:41,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 16:29:41,851 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2019-10-02 16:29:41,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:41,851 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 16:29:41,851 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:29:41,852 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 16:29:41,852 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 16:29:41,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 04:29:41 BoogieIcfgContainer [2019-10-02 16:29:41,857 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 16:29:41,860 INFO L168 Benchmark]: Toolchain (without parser) took 2246.45 ms. Allocated memory was 139.5 MB in the beginning and 199.8 MB in the end (delta: 60.3 MB). Free memory was 87.3 MB in the beginning and 79.7 MB in the end (delta: 7.6 MB). Peak memory consumption was 67.9 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:41,861 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 105.5 MB in the beginning and 105.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 16:29:41,862 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.78 ms. Allocated memory was 139.5 MB in the beginning and 199.8 MB in the end (delta: 60.3 MB). Free memory was 87.1 MB in the beginning and 178.1 MB in the end (delta: -91.1 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:41,863 INFO L168 Benchmark]: Boogie Preprocessor took 42.52 ms. Allocated memory is still 199.8 MB. Free memory was 177.5 MB in the beginning and 175.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:41,864 INFO L168 Benchmark]: RCFGBuilder took 426.38 ms. Allocated memory is still 199.8 MB. Free memory was 175.3 MB in the beginning and 156.7 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:41,865 INFO L168 Benchmark]: TraceAbstraction took 1404.66 ms. Allocated memory is still 199.8 MB. Free memory was 156.7 MB in the beginning and 79.7 MB in the end (delta: 77.0 MB). Peak memory consumption was 77.0 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:41,869 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 105.5 MB in the beginning and 105.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 368.78 ms. Allocated memory was 139.5 MB in the beginning and 199.8 MB in the end (delta: 60.3 MB). Free memory was 87.1 MB in the beginning and 178.1 MB in the end (delta: -91.1 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.52 ms. Allocated memory is still 199.8 MB. Free memory was 177.5 MB in the beginning and 175.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 426.38 ms. Allocated memory is still 199.8 MB. Free memory was 175.3 MB in the beginning and 156.7 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1404.66 ms. Allocated memory is still 199.8 MB. Free memory was 156.7 MB in the beginning and 79.7 MB in the end (delta: 77.0 MB). Peak memory consumption was 77.0 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, 40 locations, 1 error locations. SAFE Result, 1.3s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 138 SDtfs, 47 SDslu, 115 SDs, 0 SdLazy, 93 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 0.972972972972973 AbsIntWeakeningRatio, 0.8108108108108109 AbsIntAvgWeakeningVarsNumRemoved, 0.43243243243243246 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 140 NumberOfCodeBlocks, 140 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 5683 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 9/10 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...