/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/sumt4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 19:50:01,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 19:50:01,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 19:50:01,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 19:50:01,510 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 19:50:01,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 19:50:01,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 19:50:01,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 19:50:01,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 19:50:01,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 19:50:01,516 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 19:50:01,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 19:50:01,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 19:50:01,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 19:50:01,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 19:50:01,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 19:50:01,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 19:50:01,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 19:50:01,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 19:50:01,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 19:50:01,534 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 19:50:01,543 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 19:50:01,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 19:50:01,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 19:50:01,545 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 19:50:01,545 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 19:50:01,545 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 19:50:01,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 19:50:01,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 19:50:01,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 19:50:01,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 19:50:01,546 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 19:50:01,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 19:50:01,547 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 19:50:01,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 19:50:01,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 19:50:01,547 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 19:50:01,548 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 19:50:01,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 19:50:01,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:50:01,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 19:50:01,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 19:50:01,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 19:50:01,549 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 19:50:01,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 19:50:01,877 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 19:50:01,880 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 19:50:01,881 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 19:50:01,882 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 19:50:01,882 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt4.c [2020-08-22 19:50:01,949 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4328e5a64/fdd7bc56dfe34d63a161dbc761d92231/FLAG6ceb9d633 [2020-08-22 19:50:02,453 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 19:50:02,454 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt4.c [2020-08-22 19:50:02,461 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4328e5a64/fdd7bc56dfe34d63a161dbc761d92231/FLAG6ceb9d633 [2020-08-22 19:50:02,822 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4328e5a64/fdd7bc56dfe34d63a161dbc761d92231 [2020-08-22 19:50:02,832 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 19:50:02,834 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 19:50:02,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 19:50:02,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 19:50:02,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 19:50:02,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:50:02" (1/1) ... [2020-08-22 19:50:02,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f4cc786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:02, skipping insertion in model container [2020-08-22 19:50:02,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:50:02" (1/1) ... [2020-08-22 19:50:02,852 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 19:50:02,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 19:50:03,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:50:03,050 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 19:50:03,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:50:03,085 INFO L208 MainTranslator]: Completed translation [2020-08-22 19:50:03,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:03 WrapperNode [2020-08-22 19:50:03,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 19:50:03,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 19:50:03,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 19:50:03,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 19:50:03,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:03" (1/1) ... [2020-08-22 19:50:03,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:03" (1/1) ... [2020-08-22 19:50:03,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:03" (1/1) ... [2020-08-22 19:50:03,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:03" (1/1) ... [2020-08-22 19:50:03,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:03" (1/1) ... [2020-08-22 19:50:03,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:03" (1/1) ... [2020-08-22 19:50:03,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:03" (1/1) ... [2020-08-22 19:50:03,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 19:50:03,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 19:50:03,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 19:50:03,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 19:50:03,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:03" (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 [2020-08-22 19:50:03,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 19:50:03,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 19:50:03,269 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 19:50:03,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 19:50:03,270 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 19:50:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 19:50:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 19:50:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 19:50:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 19:50:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 19:50:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 19:50:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 19:50:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 19:50:03,504 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 19:50:03,504 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 19:50:03,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:50:03 BoogieIcfgContainer [2020-08-22 19:50:03,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 19:50:03,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 19:50:03,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 19:50:03,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 19:50:03,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:50:02" (1/3) ... [2020-08-22 19:50:03,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727ddbe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:50:03, skipping insertion in model container [2020-08-22 19:50:03,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:03" (2/3) ... [2020-08-22 19:50:03,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727ddbe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:50:03, skipping insertion in model container [2020-08-22 19:50:03,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:50:03" (3/3) ... [2020-08-22 19:50:03,517 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt4.c [2020-08-22 19:50:03,542 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 19:50:03,552 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 19:50:03,595 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 19:50:03,645 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 19:50:03,646 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 19:50:03,646 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 19:50:03,646 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 19:50:03,646 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 19:50:03,646 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 19:50:03,646 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 19:50:03,651 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 19:50:03,665 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-08-22 19:50:03,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 19:50:03,674 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:50:03,675 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] [2020-08-22 19:50:03,676 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:50:03,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:50:03,681 INFO L82 PathProgramCache]: Analyzing trace with hash 2048298944, now seen corresponding path program 1 times [2020-08-22 19:50:03,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:50:03,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945589842] [2020-08-22 19:50:03,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:50:03,745 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:50:03,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:04,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:50:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:04,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:50:04,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945589842] [2020-08-22 19:50:04,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:50:04,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 19:50:04,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969484156] [2020-08-22 19:50:04,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 19:50:04,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:50:04,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 19:50:04,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-08-22 19:50:04,422 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 11 states. [2020-08-22 19:50:05,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:50:05,286 INFO L93 Difference]: Finished difference Result 109 states and 147 transitions. [2020-08-22 19:50:05,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 19:50:05,290 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2020-08-22 19:50:05,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:50:05,315 INFO L225 Difference]: With dead ends: 109 [2020-08-22 19:50:05,315 INFO L226 Difference]: Without dead ends: 63 [2020-08-22 19:50:05,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2020-08-22 19:50:05,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-08-22 19:50:05,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 31. [2020-08-22 19:50:05,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-22 19:50:05,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-08-22 19:50:05,374 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 20 [2020-08-22 19:50:05,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:50:05,375 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-08-22 19:50:05,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 19:50:05,376 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-08-22 19:50:05,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 19:50:05,377 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:50:05,377 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] [2020-08-22 19:50:05,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 19:50:05,378 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:50:05,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:50:05,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1303654892, now seen corresponding path program 1 times [2020-08-22 19:50:05,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:50:05,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66254725] [2020-08-22 19:50:05,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:50:05,398 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:50:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:06,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:50:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:06,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:50:06,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66254725] [2020-08-22 19:50:06,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:50:06,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-08-22 19:50:06,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844805970] [2020-08-22 19:50:06,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-22 19:50:06,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:50:06,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-22 19:50:06,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-08-22 19:50:06,321 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 17 states. [2020-08-22 19:50:09,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:50:09,528 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2020-08-22 19:50:09,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 19:50:09,528 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 24 [2020-08-22 19:50:09,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:50:09,530 INFO L225 Difference]: With dead ends: 76 [2020-08-22 19:50:09,531 INFO L226 Difference]: Without dead ends: 71 [2020-08-22 19:50:09,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=177, Invalid=579, Unknown=0, NotChecked=0, Total=756 [2020-08-22 19:50:09,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-08-22 19:50:09,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 34. [2020-08-22 19:50:09,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-22 19:50:09,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-08-22 19:50:09,547 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 24 [2020-08-22 19:50:09,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:50:09,548 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-08-22 19:50:09,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-22 19:50:09,548 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-08-22 19:50:09,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 19:50:09,549 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:50:09,549 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] [2020-08-22 19:50:09,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 19:50:09,550 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:50:09,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:50:09,550 INFO L82 PathProgramCache]: Analyzing trace with hash -132325864, now seen corresponding path program 2 times [2020-08-22 19:50:09,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:50:09,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139593709] [2020-08-22 19:50:09,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:50:09,556 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:50:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:09,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:50:09,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:09,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:50:09,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139593709] [2020-08-22 19:50:09,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:50:09,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 19:50:09,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722980794] [2020-08-22 19:50:09,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 19:50:09,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:50:09,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 19:50:09,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 19:50:09,625 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 5 states. [2020-08-22 19:50:09,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:50:09,756 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-08-22 19:50:09,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 19:50:09,757 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-08-22 19:50:09,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:50:09,758 INFO L225 Difference]: With dead ends: 55 [2020-08-22 19:50:09,758 INFO L226 Difference]: Without dead ends: 41 [2020-08-22 19:50:09,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-22 19:50:09,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-08-22 19:50:09,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2020-08-22 19:50:09,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-22 19:50:09,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-08-22 19:50:09,773 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 28 [2020-08-22 19:50:09,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:50:09,773 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-08-22 19:50:09,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 19:50:09,774 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-08-22 19:50:09,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-22 19:50:09,775 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:50:09,775 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] [2020-08-22 19:50:09,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 19:50:09,776 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:50:09,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:50:09,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1365663380, now seen corresponding path program 1 times [2020-08-22 19:50:09,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:50:09,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588742443] [2020-08-22 19:50:09,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:50:09,783 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:50:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:10,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:50:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:10,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:50:10,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588742443] [2020-08-22 19:50:10,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:50:10,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 19:50:10,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311656312] [2020-08-22 19:50:10,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 19:50:10,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:50:10,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 19:50:10,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-22 19:50:10,119 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 9 states. [2020-08-22 19:50:16,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:50:16,817 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2020-08-22 19:50:16,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 19:50:16,817 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-08-22 19:50:16,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:50:16,818 INFO L225 Difference]: With dead ends: 68 [2020-08-22 19:50:16,818 INFO L226 Difference]: Without dead ends: 54 [2020-08-22 19:50:16,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-08-22 19:50:16,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-08-22 19:50:16,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 36. [2020-08-22 19:50:16,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-08-22 19:50:16,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-08-22 19:50:16,832 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 29 [2020-08-22 19:50:16,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:50:16,833 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-08-22 19:50:16,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 19:50:16,833 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-08-22 19:50:16,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 19:50:16,834 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:50:16,834 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, 1] [2020-08-22 19:50:16,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 19:50:16,835 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:50:16,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:50:16,835 INFO L82 PathProgramCache]: Analyzing trace with hash 85634078, now seen corresponding path program 1 times [2020-08-22 19:50:16,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:50:16,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620432136] [2020-08-22 19:50:16,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:50:16,848 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:50:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:16,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:50:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:16,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:50:16,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620432136] [2020-08-22 19:50:16,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:50:16,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 19:50:16,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952001890] [2020-08-22 19:50:16,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 19:50:16,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:50:16,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 19:50:16,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 19:50:16,929 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 5 states. [2020-08-22 19:50:17,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:50:17,030 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2020-08-22 19:50:17,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 19:50:17,030 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-08-22 19:50:17,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:50:17,031 INFO L225 Difference]: With dead ends: 53 [2020-08-22 19:50:17,032 INFO L226 Difference]: Without dead ends: 39 [2020-08-22 19:50:17,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-22 19:50:17,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-08-22 19:50:17,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-08-22 19:50:17,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-22 19:50:17,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-08-22 19:50:17,045 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 30 [2020-08-22 19:50:17,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:50:17,045 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-08-22 19:50:17,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 19:50:17,045 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-08-22 19:50:17,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 19:50:17,046 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:50:17,046 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, 1] [2020-08-22 19:50:17,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 19:50:17,047 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:50:17,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:50:17,047 INFO L82 PathProgramCache]: Analyzing trace with hash -613358466, now seen corresponding path program 1 times [2020-08-22 19:50:17,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:50:17,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215420358] [2020-08-22 19:50:17,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:50:17,053 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:50:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:17,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:50:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:17,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:50:17,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215420358] [2020-08-22 19:50:17,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:50:17,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-08-22 19:50:17,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282170142] [2020-08-22 19:50:17,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 19:50:17,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:50:17,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 19:50:17,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2020-08-22 19:50:17,983 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 19 states. [2020-08-22 19:50:19,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:50:19,318 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2020-08-22 19:50:19,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 19:50:19,319 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 30 [2020-08-22 19:50:19,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:50:19,320 INFO L225 Difference]: With dead ends: 62 [2020-08-22 19:50:19,320 INFO L226 Difference]: Without dead ends: 57 [2020-08-22 19:50:19,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=201, Invalid=791, Unknown=0, NotChecked=0, Total=992 [2020-08-22 19:50:19,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-22 19:50:19,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 40. [2020-08-22 19:50:19,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-08-22 19:50:19,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2020-08-22 19:50:19,336 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 30 [2020-08-22 19:50:19,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:50:19,337 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2020-08-22 19:50:19,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 19:50:19,337 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2020-08-22 19:50:19,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-22 19:50:19,338 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:50:19,338 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-08-22 19:50:19,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 19:50:19,338 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:50:19,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:50:19,339 INFO L82 PathProgramCache]: Analyzing trace with hash 473561002, now seen corresponding path program 2 times [2020-08-22 19:50:19,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:50:19,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882045215] [2020-08-22 19:50:19,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:50:19,350 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:50:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:19,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:50:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:19,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:50:19,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882045215] [2020-08-22 19:50:19,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:50:19,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 19:50:19,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289573112] [2020-08-22 19:50:19,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 19:50:19,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:50:19,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 19:50:19,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 19:50:19,421 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 6 states. [2020-08-22 19:50:19,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:50:19,651 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2020-08-22 19:50:19,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 19:50:19,652 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-08-22 19:50:19,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:50:19,653 INFO L225 Difference]: With dead ends: 61 [2020-08-22 19:50:19,653 INFO L226 Difference]: Without dead ends: 47 [2020-08-22 19:50:19,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-22 19:50:19,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-08-22 19:50:19,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2020-08-22 19:50:19,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-22 19:50:19,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-08-22 19:50:19,669 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 34 [2020-08-22 19:50:19,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:50:19,670 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-08-22 19:50:19,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 19:50:19,670 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-08-22 19:50:19,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-22 19:50:19,671 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:50:19,671 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1] [2020-08-22 19:50:19,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 19:50:19,672 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:50:19,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:50:19,672 INFO L82 PathProgramCache]: Analyzing trace with hash 236960282, now seen corresponding path program 1 times [2020-08-22 19:50:19,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:50:19,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374141354] [2020-08-22 19:50:19,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:50:19,679 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:50:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:19,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:50:19,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:19,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:50:19,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374141354] [2020-08-22 19:50:19,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:50:19,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 19:50:19,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296813421] [2020-08-22 19:50:19,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 19:50:19,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:50:19,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 19:50:19,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 19:50:19,974 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 10 states. [2020-08-22 19:50:26,021 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-08-22 19:50:30,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:50:30,491 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-08-22 19:50:30,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 19:50:30,492 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2020-08-22 19:50:30,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:50:30,493 INFO L225 Difference]: With dead ends: 64 [2020-08-22 19:50:30,493 INFO L226 Difference]: Without dead ends: 50 [2020-08-22 19:50:30,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-08-22 19:50:30,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-08-22 19:50:30,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2020-08-22 19:50:30,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-22 19:50:30,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-08-22 19:50:30,511 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 35 [2020-08-22 19:50:30,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:50:30,512 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-08-22 19:50:30,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 19:50:30,512 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-08-22 19:50:30,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-22 19:50:30,513 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:50:30,513 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1] [2020-08-22 19:50:30,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 19:50:30,513 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:50:30,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:50:30,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1772639952, now seen corresponding path program 1 times [2020-08-22 19:50:30,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:50:30,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357543571] [2020-08-22 19:50:30,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:50:30,521 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:50:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:31,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:50:31,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:31,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:50:31,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357543571] [2020-08-22 19:50:31,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:50:31,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-08-22 19:50:31,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823804677] [2020-08-22 19:50:31,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-22 19:50:31,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:50:31,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-22 19:50:31,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2020-08-22 19:50:31,698 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 21 states. [2020-08-22 19:50:37,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:50:37,443 INFO L93 Difference]: Finished difference Result 76 states and 90 transitions. [2020-08-22 19:50:37,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 19:50:37,444 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 36 [2020-08-22 19:50:37,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:50:37,445 INFO L225 Difference]: With dead ends: 76 [2020-08-22 19:50:37,445 INFO L226 Difference]: Without dead ends: 53 [2020-08-22 19:50:37,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=220, Invalid=1112, Unknown=0, NotChecked=0, Total=1332 [2020-08-22 19:50:37,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-08-22 19:50:37,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 46. [2020-08-22 19:50:37,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-08-22 19:50:37,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2020-08-22 19:50:37,463 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 36 [2020-08-22 19:50:37,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:50:37,463 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2020-08-22 19:50:37,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-22 19:50:37,464 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2020-08-22 19:50:37,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-22 19:50:37,464 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:50:37,464 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:50:37,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 19:50:37,465 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:50:37,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:50:37,465 INFO L82 PathProgramCache]: Analyzing trace with hash -940895396, now seen corresponding path program 2 times [2020-08-22 19:50:37,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:50:37,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100387507] [2020-08-22 19:50:37,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:50:37,479 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:50:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:37,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:50:37,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:37,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:50:37,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100387507] [2020-08-22 19:50:37,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:50:37,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 19:50:37,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992423596] [2020-08-22 19:50:37,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 19:50:37,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:50:37,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 19:50:37,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 19:50:37,564 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand 7 states. [2020-08-22 19:50:37,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:50:37,774 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2020-08-22 19:50:37,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 19:50:37,775 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-08-22 19:50:37,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:50:37,776 INFO L225 Difference]: With dead ends: 64 [2020-08-22 19:50:37,777 INFO L226 Difference]: Without dead ends: 50 [2020-08-22 19:50:37,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-08-22 19:50:37,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-08-22 19:50:37,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-08-22 19:50:37,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-08-22 19:50:37,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2020-08-22 19:50:37,795 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 40 [2020-08-22 19:50:37,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:50:37,795 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2020-08-22 19:50:37,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 19:50:37,795 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2020-08-22 19:50:37,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-22 19:50:37,796 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:50:37,796 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 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, 1, 1, 1] [2020-08-22 19:50:37,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 19:50:37,797 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:50:37,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:50:37,797 INFO L82 PathProgramCache]: Analyzing trace with hash -661515096, now seen corresponding path program 1 times [2020-08-22 19:50:37,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:50:37,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117850869] [2020-08-22 19:50:37,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:50:37,806 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:50:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:38,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:50:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:38,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:50:38,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1117850869] [2020-08-22 19:50:38,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:50:38,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 19:50:38,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273817733] [2020-08-22 19:50:38,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 19:50:38,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:50:38,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 19:50:38,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-08-22 19:50:38,032 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 11 states. [2020-08-22 19:50:38,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:50:38,535 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2020-08-22 19:50:38,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 19:50:38,536 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2020-08-22 19:50:38,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:50:38,537 INFO L225 Difference]: With dead ends: 49 [2020-08-22 19:50:38,537 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 19:50:38,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2020-08-22 19:50:38,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 19:50:38,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 19:50:38,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 19:50:38,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 19:50:38,539 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2020-08-22 19:50:38,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:50:38,540 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 19:50:38,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 19:50:38,540 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 19:50:38,540 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 19:50:38,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 19:50:38,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 19:50:39,371 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 27 [2020-08-22 19:50:40,046 INFO L264 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2020-08-22 19:50:40,046 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-08-22 19:50:40,047 INFO L264 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2020-08-22 19:50:40,047 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-08-22 19:50:40,047 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2020-08-22 19:50:40,047 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 19:50:40,047 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-08-22 19:50:40,047 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-08-22 19:50:40,047 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-22 19:50:40,047 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-22 19:50:40,047 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-08-22 19:50:40,048 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-22 19:50:40,048 INFO L271 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: true [2020-08-22 19:50:40,048 INFO L264 CegarLoopResult]: At program point L25(lines 25 28) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0))) (and (<= .cse0 main_~l~0) (<= (let ((.cse3 (div main_~l~0 4294967296))) (let ((.cse2 (* .cse3 (- 4294967296)))) (let ((.cse1 (div (+ main_~l~0 .cse2) 3))) (+ (* 6 .cse1) (* 8589934593 (div (+ (* .cse1 (- 3)) main_~l~0 .cse2) 4294967296)) (* 8589934592 .cse3) 2)))) (* 2 main_~l~0)) (<= main_~l~0 .cse0))) (not (<= 20000001 ~SIZE~0))) [2020-08-22 19:50:40,048 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 14 33) the Hoare annotation is: true [2020-08-22 19:50:40,048 INFO L264 CegarLoopResult]: At program point L23(lines 23 28) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0))) (and (<= .cse0 main_~l~0) (<= main_~l~0 .cse0))) (not (<= 20000001 ~SIZE~0))) [2020-08-22 19:50:40,048 INFO L264 CegarLoopResult]: At program point L25-2(lines 21 28) the Hoare annotation is: (or (let ((.cse1 (+ main_~l~0 1)) (.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-08-22 19:50:40,049 INFO L264 CegarLoopResult]: At program point L21(lines 21 28) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0))) (and (<= .cse0 main_~l~0) (<= main_~l~0 .cse0))) (not (<= 20000001 ~SIZE~0))) [2020-08-22 19:50:40,049 INFO L264 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (let ((.cse2 (+ main_~i~0 main_~j~0 main_~k~0)) (.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0)) (.cse1 (+ main_~i~0 main_~k~0))) (and (<= .cse0 main_~l~0) (<= 0 .cse1) (<= main_~i~0 0) (<= main_~l~0 .cse2) (<= 0 main_~i~0) (<= .cse2 main_~l~0) (<= main_~l~0 0) (<= main_~l~0 .cse0) (<= .cse1 0) (<= 0 main_~l~0))) (not (<= 20000001 ~SIZE~0))) [2020-08-22 19:50:40,049 INFO L264 CegarLoopResult]: At program point L19-2(lines 19 30) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0))) (and (<= .cse0 main_~l~0) (<= main_~l~0 .cse0))) (not (<= 20000001 ~SIZE~0))) [2020-08-22 19:50:40,049 INFO L264 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (let ((.cse2 (+ main_~i~0 main_~j~0 main_~k~0)) (.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0)) (.cse1 (+ main_~i~0 main_~k~0))) (and (<= .cse0 main_~l~0) (<= 0 .cse1) (<= main_~i~0 0) (<= main_~l~0 .cse2) (<= 0 main_~i~0) (<= .cse2 main_~l~0) (<= main_~l~0 0) (<= main_~l~0 .cse0) (<= .cse1 0) (<= 0 main_~l~0))) (not (<= 20000001 ~SIZE~0))) [2020-08-22 19:50:40,049 INFO L264 CegarLoopResult]: At program point L19-3(lines 19 30) the Hoare annotation is: (or (let ((.cse1 (+ (* 4294967296 (div (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0) 4294967296)) main_~l~0)) (.cse0 (* 4294967296 (div main_~l~0 4294967296)))) (and (<= (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0 .cse0) .cse1) (< .cse1 (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0 .cse0 1)))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-08-22 19:50:40,049 INFO L271 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-08-22 19:50:40,049 INFO L264 CegarLoopResult]: At program point L17-2(line 17) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (let ((.cse2 (+ main_~i~0 main_~j~0 main_~k~0)) (.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0)) (.cse1 (+ main_~i~0 main_~k~0))) (and (<= .cse0 main_~l~0) (<= 0 .cse1) (<= main_~i~0 0) (<= main_~l~0 .cse2) (<= 0 main_~i~0) (<= .cse2 main_~l~0) (<= main_~l~0 0) (<= main_~l~0 .cse0) (<= .cse1 0) (<= 0 main_~l~0))) (not (<= 20000001 ~SIZE~0))) [2020-08-22 19:50:40,050 INFO L264 CegarLoopResult]: At program point L15-1(line 15) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (and (<= main_~i~0 0) (<= 0 main_~i~0)) (not (<= 20000001 ~SIZE~0))) [2020-08-22 19:50:40,050 INFO L264 CegarLoopResult]: At program point L15-2(line 15) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 0 .cse0) (<= main_~i~0 0) (<= 0 main_~i~0) (<= .cse0 0))) (not (<= 20000001 ~SIZE~0))) [2020-08-22 19:50:40,050 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 14 33) the Hoare annotation is: true [2020-08-22 19:50:40,050 INFO L264 CegarLoopResult]: At program point L15-3(line 15) the Hoare annotation is: (or (let ((.cse1 (+ main_~i~0 main_~j~0 main_~k~0)) (.cse0 (+ main_~i~0 main_~k~0))) (and (<= 0 .cse0) (<= 0 .cse1) (<= main_~i~0 0) (<= .cse1 0) (<= 0 main_~i~0) (<= .cse0 0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-08-22 19:50:40,050 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 33) the Hoare annotation is: true [2020-08-22 19:50:40,050 INFO L264 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0))) (and (<= .cse0 main_~l~0) (<= main_~l~0 .cse0))) (not (<= 20000001 ~SIZE~0))) [2020-08-22 19:50:40,050 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0))) (and (<= .cse0 main_~l~0) (<= (let ((.cse3 (div main_~l~0 4294967296))) (let ((.cse2 (* .cse3 (- 4294967296)))) (let ((.cse1 (div (+ main_~l~0 .cse2) 3))) (+ (* 6 .cse1) (* 8589934593 (div (+ (* .cse1 (- 3)) main_~l~0 .cse2) 4294967296)) (* 8589934592 .cse3) 2)))) (* 2 main_~l~0)) (<= main_~l~0 .cse0))) (not (<= 20000001 ~SIZE~0))) [2020-08-22 19:50:40,051 INFO L264 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0))) (and (<= .cse0 main_~l~0) (<= main_~l~0 .cse0))) (not (<= 20000001 ~SIZE~0))) [2020-08-22 19:50:40,051 INFO L264 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0))) (and (<= .cse0 main_~l~0) (<= main_~l~0 .cse0))) (not (<= 20000001 ~SIZE~0))) [2020-08-22 19:50:40,051 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (let ((.cse2 (+ main_~i~0 main_~j~0 main_~k~0)) (.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0)) (.cse1 (+ main_~i~0 main_~k~0))) (and (<= .cse0 main_~l~0) (<= 0 .cse1) (<= main_~i~0 0) (<= main_~l~0 .cse2) (<= 0 main_~i~0) (<= .cse2 main_~l~0) (<= main_~l~0 0) (<= main_~l~0 .cse0) (<= .cse1 0) (<= 0 main_~l~0))) (not (<= 20000001 ~SIZE~0))) [2020-08-22 19:50:40,051 INFO L264 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0)) (let ((.cse1 (+ main_~i~0 main_~j~0 main_~k~0)) (.cse0 (+ main_~i~0 main_~k~0)) (.cse3 (div main_~l~0 4294967296)) (.cse2 (div (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0) 4294967296))) (and (<= 0 .cse0) (<= 0 .cse1) (<= main_~i~0 0) (<= .cse1 0) (<= main_~l~0 .cse1) (<= 0 main_~i~0) (< .cse2 (+ .cse3 1)) (<= .cse1 main_~l~0) (<= .cse0 0) (<= (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0 (* 4294967296 .cse3)) (+ (* 4294967296 .cse2) main_~l~0))))) [2020-08-22 19:50:40,052 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (or (let ((.cse1 (+ main_~i~0 main_~j~0 main_~k~0)) (.cse0 (+ main_~i~0 main_~k~0))) (and (<= 0 .cse0) (<= main_~i~0 0) (<= main_~l~0 .cse1) (<= 0 main_~i~0) (<= .cse1 main_~l~0) (<= main_~l~0 0) (<= .cse0 0) (<= 0 main_~l~0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-08-22 19:50:40,052 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-22 19:50:40,052 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 6 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-08-22 19:50:40,052 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-08-22 19:50:40,052 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))) [2020-08-22 19:50:40,052 INFO L264 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-08-22 19:50:40,053 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-08-22 19:50:40,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 07:50:40 BoogieIcfgContainer [2020-08-22 19:50:40,073 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 19:50:40,076 INFO L168 Benchmark]: Toolchain (without parser) took 37241.42 ms. Allocated memory was 146.3 MB in the beginning and 313.0 MB in the end (delta: 166.7 MB). Free memory was 103.8 MB in the beginning and 182.6 MB in the end (delta: -78.8 MB). Peak memory consumption was 161.7 MB. Max. memory is 7.1 GB. [2020-08-22 19:50:40,077 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 146.3 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 19:50:40,078 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.13 ms. Allocated memory is still 146.3 MB. Free memory was 103.6 MB in the beginning and 93.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-08-22 19:50:40,079 INFO L168 Benchmark]: Boogie Preprocessor took 113.43 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 93.9 MB in the beginning and 182.7 MB in the end (delta: -88.9 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-08-22 19:50:40,080 INFO L168 Benchmark]: RCFGBuilder took 308.73 ms. Allocated memory is still 202.9 MB. Free memory was 182.7 MB in the beginning and 167.0 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. [2020-08-22 19:50:40,081 INFO L168 Benchmark]: TraceAbstraction took 36563.48 ms. Allocated memory was 202.9 MB in the beginning and 313.0 MB in the end (delta: 110.1 MB). Free memory was 166.3 MB in the beginning and 182.6 MB in the end (delta: -16.2 MB). Peak memory consumption was 167.6 MB. Max. memory is 7.1 GB. [2020-08-22 19:50:40,085 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 146.3 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 250.13 ms. Allocated memory is still 146.3 MB. Free memory was 103.6 MB in the beginning and 93.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.43 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 93.9 MB in the beginning and 182.7 MB in the end (delta: -88.9 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 308.73 ms. Allocated memory is still 202.9 MB. Free memory was 182.7 MB in the beginning and 167.0 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 36563.48 ms. Allocated memory was 202.9 MB in the beginning and 313.0 MB in the end (delta: 110.1 MB). Free memory was 166.3 MB in the beginning and 182.6 MB in the end (delta: -16.2 MB). Peak memory consumption was 167.6 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: 19]: Loop Invariant Derived loop invariant: (!(SIZE <= 20000001) || (i + j + k + v4 <= l && l <= i + j + k + v4)) || !(20000001 <= SIZE) - 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: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 34.8s, OverallIterations: 11, TraceHistogramMax: 4, AutomataDifference: 29.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 239 SDtfs, 1370 SDslu, 387 SDs, 0 SdLazy, 1999 SolverSat, 250 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 24.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 216 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 7.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=10, 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, 11 MinimizatonAttempts, 130 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 37 LocationsWithAnnotation, 109 PreInvPairs, 184 NumberOfFragments, 867 HoareAnnotationTreeSize, 109 FomulaSimplifications, 704268 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 37 FomulaSimplificationsInter, 1390 FormulaSimplificationTreeSizeReductionInter, 1.0s 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...