/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test_while_int.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:24:54,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:24:54,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:24:54,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:24:54,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:24:54,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:24:54,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:24:54,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:24:54,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:24:54,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:24:54,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:24:54,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:24:54,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:24:54,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:24:54,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:24:54,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:24:54,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:24:54,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:24:54,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:24:54,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:24:54,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:24:54,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:24:54,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:24:54,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:24:54,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 13:24:54,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 13:24:54,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 13:24:54,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 13:24:54,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 13:24:54,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 13:24:54,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 13:24:54,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 13:24:54,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 13:24:54,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 13:24:54,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 13:24:54,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 13:24:54,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 13:24:54,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 13:24:54,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:24:54,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:24:54,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:24:54,397 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:24:54,406 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:24:54,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:24:54,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:24:54,408 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:24:54,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:24:54,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:24:54,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:24:54,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:24:54,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:24:54,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:24:54,409 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:24:54,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:24:54,410 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:24:54,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:24:54,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:24:54,410 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:24:54,411 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:24:54,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:24:54,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:24:54,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:24:54,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:24:54,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:24:54,412 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:24:54,701 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:24:54,714 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:24:54,718 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:24:54,719 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:24:54,720 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:24:54,720 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_while_int.c_1.i [2020-07-07 13:24:54,793 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38cc44812/64301027dd1144a3980ecb504a281940/FLAG576aa63bd [2020-07-07 13:24:55,219 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:24:55,220 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_while_int.c_1.i [2020-07-07 13:24:55,227 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38cc44812/64301027dd1144a3980ecb504a281940/FLAG576aa63bd [2020-07-07 13:24:55,587 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38cc44812/64301027dd1144a3980ecb504a281940 [2020-07-07 13:24:55,595 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:24:55,597 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:24:55,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:24:55,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:24:55,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:24:55,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:24:55" (1/1) ... [2020-07-07 13:24:55,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59e526ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:24:55, skipping insertion in model container [2020-07-07 13:24:55,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:24:55" (1/1) ... [2020-07-07 13:24:55,615 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:24:55,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:24:55,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:24:55,825 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:24:55,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:24:55,855 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:24:55,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:24:55 WrapperNode [2020-07-07 13:24:55,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:24:55,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:24:55,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:24:55,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:24:55,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:24:55" (1/1) ... [2020-07-07 13:24:55,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:24:55" (1/1) ... [2020-07-07 13:24:55,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:24:55" (1/1) ... [2020-07-07 13:24:55,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:24:55" (1/1) ... [2020-07-07 13:24:55,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:24:55" (1/1) ... [2020-07-07 13:24:55,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:24:55" (1/1) ... [2020-07-07 13:24:55,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:24:55" (1/1) ... [2020-07-07 13:24:55,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:24:55,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:24:55,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:24:55,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:24:55,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:24:55" (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 [2020-07-07 13:24:56,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:24:56,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:24:56,040 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-07 13:24:56,040 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:24:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:24:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-07 13:24:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:24:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:24:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:24:56,193 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:24:56,193 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 13:24:56,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:24:56 BoogieIcfgContainer [2020-07-07 13:24:56,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:24:56,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:24:56,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:24:56,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:24:56,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:24:55" (1/3) ... [2020-07-07 13:24:56,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7865607b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:24:56, skipping insertion in model container [2020-07-07 13:24:56,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:24:55" (2/3) ... [2020-07-07 13:24:56,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7865607b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:24:56, skipping insertion in model container [2020-07-07 13:24:56,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:24:56" (3/3) ... [2020-07-07 13:24:56,205 INFO L109 eAbstractionObserver]: Analyzing ICFG test_while_int.c_1.i [2020-07-07 13:24:56,215 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:24:56,222 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:24:56,236 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:24:56,258 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:24:56,258 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:24:56,259 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:24:56,259 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:24:56,259 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:24:56,259 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:24:56,259 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:24:56,259 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:24:56,274 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-07 13:24:56,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-07 13:24:56,284 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:24:56,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:24:56,286 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:24:56,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:24:56,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1457192654, now seen corresponding path program 1 times [2020-07-07 13:24:56,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:24:56,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116485906] [2020-07-07 13:24:56,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:24:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:56,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:24:56,477 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:24:56,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116485906] [2020-07-07 13:24:56,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:24:56,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 13:24:56,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364442881] [2020-07-07 13:24:56,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 13:24:56,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:24:56,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 13:24:56,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:24:56,564 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2020-07-07 13:24:56,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:24:56,668 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2020-07-07 13:24:56,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 13:24:56,670 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-07-07 13:24:56,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:24:56,678 INFO L225 Difference]: With dead ends: 41 [2020-07-07 13:24:56,679 INFO L226 Difference]: Without dead ends: 21 [2020-07-07 13:24:56,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-07 13:24:56,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-07 13:24:56,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2020-07-07 13:24:56,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-07 13:24:56,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-07-07 13:24:56,720 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 12 [2020-07-07 13:24:56,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:24:56,721 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-07-07 13:24:56,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 13:24:56,721 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-07-07 13:24:56,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-07 13:24:56,722 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:24:56,723 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:24:56,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:24:56,724 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:24:56,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:24:56,724 INFO L82 PathProgramCache]: Analyzing trace with hash -630240860, now seen corresponding path program 1 times [2020-07-07 13:24:56,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:24:56,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419990372] [2020-07-07 13:24:56,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:24:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:56,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:24:56,851 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:24:56,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419990372] [2020-07-07 13:24:56,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:24:56,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-07 13:24:56,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375621637] [2020-07-07 13:24:56,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 13:24:56,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:24:56,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 13:24:56,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-07 13:24:56,855 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 7 states. [2020-07-07 13:24:56,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:24:56,972 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-07-07 13:24:56,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-07 13:24:56,972 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-07-07 13:24:56,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:24:56,974 INFO L225 Difference]: With dead ends: 29 [2020-07-07 13:24:56,974 INFO L226 Difference]: Without dead ends: 26 [2020-07-07 13:24:56,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-07-07 13:24:56,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-07 13:24:56,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2020-07-07 13:24:56,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-07 13:24:56,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-07-07 13:24:56,985 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 17 [2020-07-07 13:24:56,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:24:56,985 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-07-07 13:24:56,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 13:24:56,986 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-07-07 13:24:56,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-07 13:24:56,987 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:24:56,987 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:24:56,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:24:56,988 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:24:56,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:24:56,988 INFO L82 PathProgramCache]: Analyzing trace with hash 656823438, now seen corresponding path program 2 times [2020-07-07 13:24:56,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:24:56,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558446848] [2020-07-07 13:24:56,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:24:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:24:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:24:57,039 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:24:57,040 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 13:24:57,040 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 13:24:57,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:24:57,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 01:24:57 BoogieIcfgContainer [2020-07-07 13:24:57,057 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 13:24:57,060 INFO L168 Benchmark]: Toolchain (without parser) took 1462.46 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 101.0 MB in the beginning and 119.5 MB in the end (delta: -18.5 MB). Peak memory consumption was 38.6 MB. Max. memory is 7.1 GB. [2020-07-07 13:24:57,062 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 143.7 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 13:24:57,063 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.30 ms. Allocated memory is still 143.7 MB. Free memory was 100.5 MB in the beginning and 91.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-07-07 13:24:57,064 INFO L168 Benchmark]: Boogie Preprocessor took 114.19 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 91.5 MB in the beginning and 180.9 MB in the end (delta: -89.4 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:24:57,065 INFO L168 Benchmark]: RCFGBuilder took 226.03 ms. Allocated memory is still 200.8 MB. Free memory was 180.9 MB in the beginning and 168.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:24:57,066 INFO L168 Benchmark]: TraceAbstraction took 859.79 ms. Allocated memory is still 200.8 MB. Free memory was 168.3 MB in the beginning and 119.5 MB in the end (delta: 48.8 MB). Peak memory consumption was 48.8 MB. Max. memory is 7.1 GB. [2020-07-07 13:24:57,070 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 143.7 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 257.30 ms. Allocated memory is still 143.7 MB. Free memory was 100.5 MB in the beginning and 91.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.19 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 91.5 MB in the beginning and 180.9 MB in the end (delta: -89.4 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 226.03 ms. Allocated memory is still 200.8 MB. Free memory was 180.9 MB in the beginning and 168.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 859.79 ms. Allocated memory is still 200.8 MB. Free memory was 168.3 MB in the beginning and 119.5 MB in the end (delta: 48.8 MB). Peak memory consumption was 48.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i=0; [L13] COND TRUE i<5 [L14] i++ [L16] (i!=3) ? (0) : __blast_assert () [L13] COND TRUE i<5 [L14] i++ [L16] (i!=3) ? (0) : __blast_assert () [L13] COND TRUE i<5 [L14] i++ [L16] (i!=3) ? (0) : __blast_assert () [L16] CALL __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 15 SDslu, 60 SDs, 0 SdLazy, 48 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...