/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/loops-crafted-1/sumt2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:56:14,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:56:15,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:56:15,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:56:15,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:56:15,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:56:15,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:56:15,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:56:15,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:56:15,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:56:15,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:56:15,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:56:15,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:56:15,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:56:15,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:56:15,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:56:15,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:56:15,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:56:15,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:56:15,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:56:15,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:56:15,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:56:15,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:56:15,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:56:15,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 17:56:15,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:56:15,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:56:15,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:56:15,147 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 17:56:15,163 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:56:15,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:56:15,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:56:15,167 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:56:15,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:56:15,168 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:56:15,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:56:15,168 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:56:15,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:56:15,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:56:15,170 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:56:15,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:56:15,170 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:56:15,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:56:15,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:56:15,171 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:56:15,171 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:56:15,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:56:15,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:56:15,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:56:15,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:56:15,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:56:15,173 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:56:15,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:56:15,706 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:56:15,712 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:56:15,715 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:56:15,716 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:56:15,718 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt2.c [2020-09-04 17:56:15,837 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/105abc066/13ab5b5859144682bdd11cd722f1b5bc/FLAGbff472faf [2020-09-04 17:56:16,498 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:56:16,499 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/sumt2.c [2020-09-04 17:56:16,509 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/105abc066/13ab5b5859144682bdd11cd722f1b5bc/FLAGbff472faf [2020-09-04 17:56:16,849 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/105abc066/13ab5b5859144682bdd11cd722f1b5bc [2020-09-04 17:56:16,863 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:56:16,866 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:56:16,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:56:16,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:56:16,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:56:16,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:56:16" (1/1) ... [2020-09-04 17:56:16,882 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c77fbdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:56:16, skipping insertion in model container [2020-09-04 17:56:16,882 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:56:16" (1/1) ... [2020-09-04 17:56:16,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:56:16,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:56:17,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:56:17,171 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:56:17,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:56:17,218 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:56:17,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:56:17 WrapperNode [2020-09-04 17:56:17,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:56:17,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:56:17,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:56:17,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:56:17,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:56:17" (1/1) ... [2020-09-04 17:56:17,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:56:17" (1/1) ... [2020-09-04 17:56:17,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:56:17" (1/1) ... [2020-09-04 17:56:17,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:56:17" (1/1) ... [2020-09-04 17:56:17,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:56:17" (1/1) ... [2020-09-04 17:56:17,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:56:17" (1/1) ... [2020-09-04 17:56:17,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:56:17" (1/1) ... [2020-09-04 17:56:17,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:56:17,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:56:17,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:56:17,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:56:17,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:56:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:56:17,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:56:17,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:56:17,463 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:56:17,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:56:17,463 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:56:17,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:56:17,463 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:56:17,464 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:56:17,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:56:17,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:56:17,464 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:56:17,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:56:17,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:56:17,817 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:56:17,817 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 17:56:17,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:56:17 BoogieIcfgContainer [2020-09-04 17:56:17,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:56:17,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:56:17,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:56:17,839 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:56:17,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:56:16" (1/3) ... [2020-09-04 17:56:17,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf81211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:56:17, skipping insertion in model container [2020-09-04 17:56:17,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:56:17" (2/3) ... [2020-09-04 17:56:17,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf81211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:56:17, skipping insertion in model container [2020-09-04 17:56:17,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:56:17" (3/3) ... [2020-09-04 17:56:17,861 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt2.c [2020-09-04 17:56:17,877 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:56:17,889 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:56:17,910 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:56:17,943 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:56:17,944 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:56:17,944 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:56:17,944 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:56:17,944 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:56:17,944 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:56:17,946 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:56:17,946 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:56:17,970 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-09-04 17:56:17,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-04 17:56:17,983 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:56:17,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:56:17,985 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:56:17,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:56:17,993 INFO L82 PathProgramCache]: Analyzing trace with hash 960346385, now seen corresponding path program 1 times [2020-09-04 17:56:18,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:56:18,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478639474] [2020-09-04 17:56:18,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:56:18,077 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:56:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:18,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:56:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:18,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:56:18,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478639474] [2020-09-04 17:56:18,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:56:18,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 17:56:18,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936806264] [2020-09-04 17:56:18,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 17:56:18,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:56:18,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 17:56:18,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:56:18,256 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-09-04 17:56:18,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:56:18,339 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2020-09-04 17:56:18,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 17:56:18,342 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-09-04 17:56:18,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:56:18,352 INFO L225 Difference]: With dead ends: 46 [2020-09-04 17:56:18,352 INFO L226 Difference]: Without dead ends: 26 [2020-09-04 17:56:18,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:56:18,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-04 17:56:18,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-04 17:56:18,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-04 17:56:18,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-09-04 17:56:18,405 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 21 [2020-09-04 17:56:18,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:56:18,405 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-09-04 17:56:18,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 17:56:18,406 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-09-04 17:56:18,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-04 17:56:18,407 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:56:18,407 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:56:18,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:56:18,408 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:56:18,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:56:18,409 INFO L82 PathProgramCache]: Analyzing trace with hash 948340612, now seen corresponding path program 1 times [2020-09-04 17:56:18,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:56:18,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208225184] [2020-09-04 17:56:18,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:56:18,412 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:56:18,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:18,833 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2020-09-04 17:56:18,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:56:18,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:19,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:56:19,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208225184] [2020-09-04 17:56:19,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:56:19,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 17:56:19,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414344649] [2020-09-04 17:56:19,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 17:56:19,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:56:19,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 17:56:19,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 17:56:19,011 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 9 states. [2020-09-04 17:56:21,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:56:21,487 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-09-04 17:56:21,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-04 17:56:21,488 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-04 17:56:21,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:56:21,490 INFO L225 Difference]: With dead ends: 34 [2020-09-04 17:56:21,490 INFO L226 Difference]: Without dead ends: 29 [2020-09-04 17:56:21,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-09-04 17:56:21,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-04 17:56:21,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-09-04 17:56:21,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-09-04 17:56:21,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-09-04 17:56:21,531 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 21 [2020-09-04 17:56:21,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:56:21,531 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-09-04 17:56:21,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 17:56:21,531 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-09-04 17:56:21,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-04 17:56:21,532 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:56:21,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:56:21,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:56:21,533 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:56:21,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:56:21,534 INFO L82 PathProgramCache]: Analyzing trace with hash 974616700, now seen corresponding path program 1 times [2020-09-04 17:56:21,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:56:21,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114998153] [2020-09-04 17:56:21,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:56:21,566 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:56:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,169 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 28 [2020-09-04 17:56:22,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:56:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:56:22,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114998153] [2020-09-04 17:56:22,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:56:22,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 17:56:22,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698893084] [2020-09-04 17:56:22,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 17:56:22,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:56:22,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 17:56:22,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-09-04 17:56:22,409 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 14 states. [2020-09-04 17:56:25,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:56:25,186 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2020-09-04 17:56:25,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-04 17:56:25,188 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 25 [2020-09-04 17:56:25,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:56:25,192 INFO L225 Difference]: With dead ends: 57 [2020-09-04 17:56:25,192 INFO L226 Difference]: Without dead ends: 44 [2020-09-04 17:56:25,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2020-09-04 17:56:25,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-04 17:56:25,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2020-09-04 17:56:25,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-04 17:56:25,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-09-04 17:56:25,206 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 25 [2020-09-04 17:56:25,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:56:25,206 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-09-04 17:56:25,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 17:56:25,206 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-09-04 17:56:25,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-04 17:56:25,208 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:56:25,208 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:56:25,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:56:25,209 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:56:25,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:56:25,209 INFO L82 PathProgramCache]: Analyzing trace with hash 928460148, now seen corresponding path program 2 times [2020-09-04 17:56:25,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:56:25,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557128552] [2020-09-04 17:56:25,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:56:25,217 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:56:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:25,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:56:25,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:25,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:56:25,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557128552] [2020-09-04 17:56:25,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:56:25,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:56:25,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545528461] [2020-09-04 17:56:25,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:56:25,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:56:25,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:56:25,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:56:25,322 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 5 states. [2020-09-04 17:56:25,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:56:25,502 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2020-09-04 17:56:25,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 17:56:25,503 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-09-04 17:56:25,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:56:25,504 INFO L225 Difference]: With dead ends: 44 [2020-09-04 17:56:25,505 INFO L226 Difference]: Without dead ends: 34 [2020-09-04 17:56:25,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-04 17:56:25,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-04 17:56:25,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-09-04 17:56:25,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-04 17:56:25,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-09-04 17:56:25,535 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 29 [2020-09-04 17:56:25,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:56:25,535 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-09-04 17:56:25,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:56:25,536 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-09-04 17:56:25,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-04 17:56:25,539 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:56:25,539 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:56:25,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 17:56:25,540 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:56:25,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:56:25,540 INFO L82 PathProgramCache]: Analyzing trace with hash 229467604, now seen corresponding path program 1 times [2020-09-04 17:56:25,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:56:25,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389726720] [2020-09-04 17:56:25,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:56:25,549 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:56:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:25,884 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2020-09-04 17:56:26,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:56:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:26,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:56:26,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389726720] [2020-09-04 17:56:26,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:56:26,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-04 17:56:26,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797025739] [2020-09-04 17:56:26,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 17:56:26,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:56:26,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 17:56:26,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-04 17:56:26,042 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 12 states. [2020-09-04 17:56:26,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:56:26,421 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-09-04 17:56:26,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 17:56:26,423 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2020-09-04 17:56:26,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:56:26,423 INFO L225 Difference]: With dead ends: 32 [2020-09-04 17:56:26,423 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 17:56:26,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2020-09-04 17:56:26,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 17:56:26,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 17:56:26,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 17:56:26,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 17:56:26,427 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2020-09-04 17:56:26,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:56:26,428 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 17:56:26,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 17:56:26,428 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 17:56:26,428 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 17:56:26,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 17:56:26,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 17:56:27,296 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2020-09-04 17:56:27,395 INFO L264 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2020-09-04 17:56:27,396 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-09-04 17:56:27,396 INFO L264 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2020-09-04 17:56:27,396 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-09-04 17:56:27,396 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2020-09-04 17:56:27,397 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 17:56:27,397 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-09-04 17:56:27,397 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-04 17:56:27,397 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-04 17:56:27,397 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-04 17:56:27,397 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-04 17:56:27,398 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-04 17:56:27,398 INFO L271 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: true [2020-09-04 17:56:27,398 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 14 31) the Hoare annotation is: true [2020-09-04 17:56:27,398 INFO L264 CegarLoopResult]: At program point L23(lines 23 26) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0)) (let ((.cse0 (+ main_~i~0 main_~j~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0) (<= (+ (* 4294967296 (div main_~n~0 4294967296)) main_~l~0 1) (+ main_~i~0 main_~j~0 main_~n~0))))) [2020-09-04 17:56:27,399 INFO L264 CegarLoopResult]: At program point L23-2(lines 23 26) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (let ((.cse1 (+ main_~l~0 1)) (.cse0 (+ main_~i~0 main_~j~0))) (and (<= (+ (* 4294967296 (div main_~n~0 4294967296)) main_~l~0 2) (+ main_~i~0 main_~j~0 main_~n~0)) (<= .cse0 .cse1) (<= .cse1 .cse0))) (not (<= 20000001 ~SIZE~0))) [2020-09-04 17:56:27,399 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (or (and (<= 0 main_~i~0) (<= (div (+ main_~i~0 4294967295) 4294967296) 0) (<= main_~l~0 0) (<= 0 main_~l~0)) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-09-04 17:56:27,399 INFO L264 CegarLoopResult]: At program point L21-2(lines 21 28) the Hoare annotation is: (let ((.cse1 (+ main_~i~0 main_~j~0))) (let ((.cse0 (<= main_~l~0 .cse1))) (or (not (<= ~SIZE~0 20000001)) (and (<= (* 4294967296 (div (+ main_~i~0 main_~j~0 4294967295) 4294967296)) main_~l~0) .cse0 (<= 0 main_~i~0) (<= (div (+ main_~i~0 4294967295) 4294967296) 0) (<= main_~l~0 0) (<= 0 main_~l~0)) (not (<= 20000001 ~SIZE~0)) (and .cse0 (<= .cse1 main_~l~0) (<= (+ (* 4294967296 (div main_~n~0 4294967296)) main_~l~0 1) (+ main_~i~0 main_~j~0 main_~n~0)))))) [2020-09-04 17:56:27,400 INFO L264 CegarLoopResult]: At program point L21-3(lines 21 28) the Hoare annotation is: (or (let ((.cse2 (div (+ main_~i~0 main_~j~0) 4294967296)) (.cse3 (div main_~l~0 4294967296))) (let ((.cse1 (* 4294967296 .cse3)) (.cse0 (+ (* 4294967296 .cse2) main_~l~0))) (and (< .cse0 (+ main_~i~0 main_~j~0 .cse1 1)) (< .cse2 (+ .cse3 1)) (<= (+ main_~i~0 main_~j~0 .cse1) .cse0)))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-09-04 17:56:27,400 INFO L264 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (or (and (<= main_~l~0 0) (<= 0 main_~l~0)) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-09-04 17:56:27,400 INFO L271 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: true [2020-09-04 17:56:27,400 INFO L271 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-09-04 17:56:27,401 INFO L271 CegarLoopResult]: At program point L15-1(line 15) the Hoare annotation is: true [2020-09-04 17:56:27,401 INFO L271 CegarLoopResult]: At program point L15-2(line 15) the Hoare annotation is: true [2020-09-04 17:56:27,401 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 14 31) the Hoare annotation is: true [2020-09-04 17:56:27,401 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 31) the Hoare annotation is: true [2020-09-04 17:56:27,402 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0)) (let ((.cse0 (+ main_~i~0 main_~j~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0) (<= (+ (* 4294967296 (div main_~n~0 4294967296)) main_~l~0 1) (+ main_~i~0 main_~j~0 main_~n~0))))) [2020-09-04 17:56:27,402 INFO L264 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0)) (let ((.cse0 (+ main_~i~0 main_~j~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0) (<= (+ (* 4294967296 (div main_~n~0 4294967296)) main_~l~0 1) (+ main_~i~0 main_~j~0 main_~n~0))))) [2020-09-04 17:56:27,402 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (and (<= (div (+ main_~i~0 main_~j~0 4294967295) 4294967296) 0) (<= 0 main_~i~0) (<= (div (+ main_~i~0 4294967295) 4294967296) 0) (<= main_~l~0 0) (<= 0 (+ main_~i~0 main_~j~0)) (<= 0 main_~l~0)) (not (<= 20000001 ~SIZE~0))) [2020-09-04 17:56:27,402 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (or (and (<= main_~l~0 0) (<= 0 main_~l~0)) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-09-04 17:56:27,403 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (or (and (<= main_~l~0 0) (<= 0 main_~l~0)) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-09-04 17:56:27,403 INFO L264 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: (or (and (<= main_~l~0 0) (<= 0 main_~l~0)) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-09-04 17:56:27,403 INFO L264 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: (or (and (<= main_~l~0 0) (<= 0 main_~l~0)) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-09-04 17:56:27,403 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-04 17:56:27,403 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 6 11) the Hoare annotation is: true [2020-09-04 17:56:27,404 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-09-04 17:56:27,404 INFO L264 CegarLoopResult]: At program point L7(lines 7 9) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-09-04 17:56:27,404 INFO L271 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: true [2020-09-04 17:56:27,404 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-09-04 17:56:27,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:56:27 BoogieIcfgContainer [2020-09-04 17:56:27,447 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:56:27,454 INFO L168 Benchmark]: Toolchain (without parser) took 10584.84 ms. Allocated memory was 137.9 MB in the beginning and 249.6 MB in the end (delta: 111.7 MB). Free memory was 102.9 MB in the beginning and 177.8 MB in the end (delta: -74.8 MB). Peak memory consumption was 120.6 MB. Max. memory is 7.1 GB. [2020-09-04 17:56:27,456 INFO L168 Benchmark]: CDTParser took 0.67 ms. Allocated memory is still 137.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 17:56:27,458 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.12 ms. Allocated memory is still 137.9 MB. Free memory was 102.7 MB in the beginning and 93.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-04 17:56:27,465 INFO L168 Benchmark]: Boogie Preprocessor took 152.89 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 93.1 MB in the beginning and 180.6 MB in the end (delta: -87.4 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-09-04 17:56:27,468 INFO L168 Benchmark]: RCFGBuilder took 452.00 ms. Allocated memory is still 201.9 MB. Free memory was 179.9 MB in the beginning and 166.4 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-04 17:56:27,469 INFO L168 Benchmark]: TraceAbstraction took 9613.61 ms. Allocated memory was 201.9 MB in the beginning and 249.6 MB in the end (delta: 47.7 MB). Free memory was 165.7 MB in the beginning and 177.8 MB in the end (delta: -12.1 MB). Peak memory consumption was 119.4 MB. Max. memory is 7.1 GB. [2020-09-04 17:56:27,479 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67 ms. Allocated memory is still 137.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 352.12 ms. Allocated memory is still 137.9 MB. Free memory was 102.7 MB in the beginning and 93.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 152.89 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 93.1 MB in the beginning and 180.6 MB in the end (delta: -87.4 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 452.00 ms. Allocated memory is still 201.9 MB. Free memory was 179.9 MB in the beginning and 166.4 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9613.61 ms. Allocated memory was 201.9 MB in the beginning and 249.6 MB in the end (delta: 47.7 MB). Free memory was 165.7 MB in the beginning and 177.8 MB in the end (delta: -12.1 MB). Peak memory consumption was 119.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((!(SIZE <= 20000001) || (((((4294967296 * ((i + j + 4294967295) / 4294967296) <= l && l <= i + j) && 0 <= i) && (i + 4294967295) / 4294967296 <= 0) && l <= 0) && 0 <= l)) || !(20000001 <= SIZE)) || ((l <= i + j && i + j <= l) && 4294967296 * (n / 4294967296) + l + 1 <= i + j + n) - ProcedureContractResult [Line: 14]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 6]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.4s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 112 SDtfs, 233 SDslu, 141 SDs, 0 SdLazy, 440 SolverSat, 45 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 17 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 34 LocationsWithAnnotation, 64 PreInvPairs, 93 NumberOfFragments, 456 HoareAnnotationTreeSize, 64 FomulaSimplifications, 1338 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 34 FomulaSimplificationsInter, 531 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, 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 correct! Received shutdown request...