/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/sumt3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 02:11:50,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 02:11:50,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 02:11:50,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 02:11:50,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 02:11:50,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 02:11:50,520 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 02:11:50,522 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 02:11:50,523 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 02:11:50,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 02:11:50,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 02:11:50,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 02:11:50,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 02:11:50,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 02:11:50,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 02:11:50,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 02:11:50,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 02:11:50,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 02:11:50,574 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 02:11:50,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 02:11:50,576 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 02:11:50,599 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 02:11:50,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 02:11:50,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 02:11:50,605 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 02:11:50,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 02:11:50,606 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 02:11:50,606 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 02:11:50,606 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 02:11:50,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 02:11:50,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 02:11:50,607 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 02:11:50,607 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 02:11:50,607 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 02:11:50,608 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 02:11:50,608 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 02:11:50,608 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 02:11:50,608 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 02:11:50,608 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 02:11:50,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 02:11:50,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 02:11:50,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 02:11:50,609 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 02:11:50,609 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 02:11:51,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 02:11:51,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 02:11:51,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 02:11:51,131 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 02:11:51,133 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 02:11:51,134 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt3.c [2020-11-07 02:11:51,240 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88e5e34d5/a259e061781e4e0898ab92d711a9e40c/FLAG0551b7a91 [2020-11-07 02:11:51,879 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 02:11:51,880 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt3.c [2020-11-07 02:11:51,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88e5e34d5/a259e061781e4e0898ab92d711a9e40c/FLAG0551b7a91 [2020-11-07 02:11:52,247 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88e5e34d5/a259e061781e4e0898ab92d711a9e40c [2020-11-07 02:11:52,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 02:11:52,261 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 02:11:52,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 02:11:52,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 02:11:52,271 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 02:11:52,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:11:52" (1/1) ... [2020-11-07 02:11:52,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@181a7bee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:52, skipping insertion in model container [2020-11-07 02:11:52,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:11:52" (1/1) ... [2020-11-07 02:11:52,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 02:11:52,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 02:11:52,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:11:52,530 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 02:11:52,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:11:52,572 INFO L208 MainTranslator]: Completed translation [2020-11-07 02:11:52,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:52 WrapperNode [2020-11-07 02:11:52,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 02:11:52,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 02:11:52,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 02:11:52,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 02:11:52,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:52" (1/1) ... [2020-11-07 02:11:52,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:52" (1/1) ... [2020-11-07 02:11:52,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:52" (1/1) ... [2020-11-07 02:11:52,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:52" (1/1) ... [2020-11-07 02:11:52,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:52" (1/1) ... [2020-11-07 02:11:52,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:52" (1/1) ... [2020-11-07 02:11:52,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:52" (1/1) ... [2020-11-07 02:11:52,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 02:11:52,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 02:11:52,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 02:11:52,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 02:11:52,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:52" (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 [2020-11-07 02:11:52,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 02:11:52,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 02:11:52,705 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 02:11:52,705 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 02:11:52,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 02:11:52,706 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 02:11:52,706 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 02:11:52,706 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 02:11:52,706 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 02:11:52,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 02:11:52,707 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 02:11:52,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 02:11:52,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-11-07 02:11:52,707 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 02:11:52,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 02:11:52,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 02:11:52,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 02:11:52,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 02:11:52,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 02:11:52,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 02:11:53,100 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 02:11:53,100 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 02:11:53,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:11:53 BoogieIcfgContainer [2020-11-07 02:11:53,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 02:11:53,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 02:11:53,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 02:11:53,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 02:11:53,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:11:52" (1/3) ... [2020-11-07 02:11:53,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d47bfa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:11:53, skipping insertion in model container [2020-11-07 02:11:53,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:52" (2/3) ... [2020-11-07 02:11:53,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d47bfa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:11:53, skipping insertion in model container [2020-11-07 02:11:53,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:11:53" (3/3) ... [2020-11-07 02:11:53,114 INFO L111 eAbstractionObserver]: Analyzing ICFG sumt3.c [2020-11-07 02:11:53,131 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 02:11:53,135 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 02:11:53,153 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 02:11:53,186 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 02:11:53,186 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 02:11:53,186 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 02:11:53,187 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 02:11:53,187 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 02:11:53,187 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 02:11:53,187 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 02:11:53,188 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 02:11:53,206 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-11-07 02:11:53,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-07 02:11:53,217 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:11:53,218 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, 1, 1, 1, 1, 1, 1] [2020-11-07 02:11:53,218 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:11:53,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:11:53,225 INFO L82 PathProgramCache]: Analyzing trace with hash -2136131298, now seen corresponding path program 1 times [2020-11-07 02:11:53,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:11:53,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968616447] [2020-11-07 02:11:53,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:11:53,324 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:11:53,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:11:54,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:11:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:11:54,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:11:54,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968616447] [2020-11-07 02:11:54,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:11:54,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-07 02:11:54,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124979212] [2020-11-07 02:11:54,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 02:11:54,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:11:54,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 02:11:54,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-07 02:11:54,210 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 9 states. [2020-11-07 02:11:55,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:11:55,167 INFO L93 Difference]: Finished difference Result 80 states and 96 transitions. [2020-11-07 02:11:55,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 02:11:55,170 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-11-07 02:11:55,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:11:55,180 INFO L225 Difference]: With dead ends: 80 [2020-11-07 02:11:55,180 INFO L226 Difference]: Without dead ends: 41 [2020-11-07 02:11:55,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-11-07 02:11:55,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-07 02:11:55,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2020-11-07 02:11:55,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-07 02:11:55,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2020-11-07 02:11:55,237 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 31 [2020-11-07 02:11:55,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:11:55,238 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2020-11-07 02:11:55,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 02:11:55,238 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2020-11-07 02:11:55,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-07 02:11:55,240 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:11:55,240 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:11:55,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 02:11:55,241 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:11:55,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:11:55,242 INFO L82 PathProgramCache]: Analyzing trace with hash -609275412, now seen corresponding path program 1 times [2020-11-07 02:11:55,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:11:55,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629528427] [2020-11-07 02:11:55,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:11:56,132 WARN L194 SmtUtils]: Spent 831.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 89 [2020-11-07 02:11:56,146 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:11:56,148 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:11:56,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:11:56,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:11:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:11:56,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:11:56,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629528427] [2020-11-07 02:11:56,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:11:56,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-11-07 02:11:56,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886924555] [2020-11-07 02:11:56,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-07 02:11:56,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:11:56,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-07 02:11:56,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-11-07 02:11:56,681 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 13 states. [2020-11-07 02:11:57,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:11:57,511 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2020-11-07 02:11:57,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 02:11:57,517 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 35 [2020-11-07 02:11:57,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:11:57,519 INFO L225 Difference]: With dead ends: 54 [2020-11-07 02:11:57,519 INFO L226 Difference]: Without dead ends: 48 [2020-11-07 02:11:57,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2020-11-07 02:11:57,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-07 02:11:57,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 43. [2020-11-07 02:11:57,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-07 02:11:57,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2020-11-07 02:11:57,544 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 35 [2020-11-07 02:11:57,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:11:57,545 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2020-11-07 02:11:57,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-07 02:11:57,545 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-11-07 02:11:57,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-07 02:11:57,547 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:11:57,547 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:11:57,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 02:11:57,548 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:11:57,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:11:57,548 INFO L82 PathProgramCache]: Analyzing trace with hash -2142497862, now seen corresponding path program 2 times [2020-11-07 02:11:57,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:11:57,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074791327] [2020-11-07 02:11:57,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:11:59,009 WARN L194 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 901 DAG size of output: 89 [2020-11-07 02:12:01,109 WARN L194 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 21 [2020-11-07 02:12:03,229 WARN L194 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 21 [2020-11-07 02:12:08,816 WARN L194 SmtUtils]: Spent 5.56 s on a formula simplification. DAG size of input: 3247 DAG size of output: 146 [2020-11-07 02:12:08,821 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:12:08,823 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:12:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:12:09,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:12:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:12:09,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:12:09,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074791327] [2020-11-07 02:12:09,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:12:09,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-07 02:12:09,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715582996] [2020-11-07 02:12:09,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 02:12:09,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:12:09,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 02:12:09,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-07 02:12:09,282 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 9 states. [2020-11-07 02:12:12,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:12:12,069 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2020-11-07 02:12:12,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-07 02:12:12,070 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2020-11-07 02:12:12,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:12:12,071 INFO L225 Difference]: With dead ends: 71 [2020-11-07 02:12:12,071 INFO L226 Difference]: Without dead ends: 58 [2020-11-07 02:12:12,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-11-07 02:12:12,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-07 02:12:12,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 44. [2020-11-07 02:12:12,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-07 02:12:12,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2020-11-07 02:12:12,091 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 39 [2020-11-07 02:12:12,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:12:12,091 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2020-11-07 02:12:12,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 02:12:12,092 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2020-11-07 02:12:12,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-07 02:12:12,093 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:12:12,093 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:12:12,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 02:12:12,094 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:12:12,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:12:12,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1785635382, now seen corresponding path program 1 times [2020-11-07 02:12:12,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:12:12,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417616565] [2020-11-07 02:12:12,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:12:13,662 WARN L194 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 901 DAG size of output: 89 [2020-11-07 02:12:15,758 WARN L194 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 25 [2020-11-07 02:12:17,849 WARN L194 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 25 [2020-11-07 02:12:18,792 WARN L194 SmtUtils]: Spent 939.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 96 [2020-11-07 02:12:20,882 WARN L194 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 21 [2020-11-07 02:12:22,968 WARN L194 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 21 [2020-11-07 02:12:25,760 WARN L194 SmtUtils]: Spent 2.79 s on a formula simplification. DAG size of input: 164 DAG size of output: 143 [2020-11-07 02:12:25,767 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:12:25,771 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:12:25,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:12:26,202 WARN L194 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 31 [2020-11-07 02:12:26,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:12:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:12:26,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:12:26,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417616565] [2020-11-07 02:12:26,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:12:26,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-11-07 02:12:26,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569053965] [2020-11-07 02:12:26,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-07 02:12:26,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:12:26,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-07 02:12:26,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-11-07 02:12:26,420 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand 15 states. [2020-11-07 02:12:29,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:12:29,541 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2020-11-07 02:12:29,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-07 02:12:29,542 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2020-11-07 02:12:29,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:12:29,543 INFO L225 Difference]: With dead ends: 60 [2020-11-07 02:12:29,543 INFO L226 Difference]: Without dead ends: 54 [2020-11-07 02:12:29,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2020-11-07 02:12:29,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-07 02:12:29,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2020-11-07 02:12:29,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-07 02:12:29,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2020-11-07 02:12:29,563 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 40 [2020-11-07 02:12:29,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:12:29,564 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2020-11-07 02:12:29,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-07 02:12:29,564 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2020-11-07 02:12:29,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-07 02:12:29,565 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:12:29,565 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:12:29,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 02:12:29,566 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:12:29,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:12:29,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1979567766, now seen corresponding path program 1 times [2020-11-07 02:12:29,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:12:29,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326197419] [2020-11-07 02:12:29,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:12:31,597 WARN L194 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 919 DAG size of output: 95 [2020-11-07 02:12:32,404 WARN L194 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 89 [2020-11-07 02:12:34,490 WARN L194 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 21 [2020-11-07 02:12:36,572 WARN L194 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 21 [2020-11-07 02:12:38,442 WARN L194 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 179 DAG size of output: 146 [2020-11-07 02:12:38,444 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:12:38,446 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:12:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:12:38,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:12:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:12:38,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:12:38,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326197419] [2020-11-07 02:12:38,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:12:38,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 02:12:38,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043337626] [2020-11-07 02:12:38,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 02:12:38,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:12:38,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 02:12:38,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-07 02:12:38,572 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 5 states. [2020-11-07 02:12:38,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:12:38,805 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2020-11-07 02:12:38,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-07 02:12:38,806 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-11-07 02:12:38,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:12:38,807 INFO L225 Difference]: With dead ends: 61 [2020-11-07 02:12:38,807 INFO L226 Difference]: Without dead ends: 48 [2020-11-07 02:12:38,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-07 02:12:38,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-07 02:12:38,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-11-07 02:12:38,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-07 02:12:38,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2020-11-07 02:12:38,824 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 40 [2020-11-07 02:12:38,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:12:38,824 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2020-11-07 02:12:38,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 02:12:38,825 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2020-11-07 02:12:38,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-07 02:12:38,826 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:12:38,826 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:12:38,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 02:12:38,827 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:12:38,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:12:38,827 INFO L82 PathProgramCache]: Analyzing trace with hash -974762236, now seen corresponding path program 2 times [2020-11-07 02:12:38,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:12:38,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672765291] [2020-11-07 02:12:38,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:12:39,702 WARN L194 SmtUtils]: Spent 826.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 89 [2020-11-07 02:12:41,827 WARN L194 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 25 [2020-11-07 02:12:44,169 WARN L194 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 920 DAG size of output: 96 [2020-11-07 02:12:46,298 WARN L194 SmtUtils]: Spent 2.13 s on a formula simplification that was a NOOP. DAG size: 26 [2020-11-07 02:12:50,477 WARN L194 SmtUtils]: Spent 4.18 s on a formula simplification that was a NOOP. DAG size: 26 [2020-11-07 02:12:54,108 WARN L194 SmtUtils]: Spent 3.62 s on a formula simplification. DAG size of input: 1250 DAG size of output: 110 [2020-11-07 02:12:56,191 WARN L194 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 21 [2020-11-07 02:12:58,275 WARN L194 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 21 [2020-11-07 02:13:00,805 WARN L194 SmtUtils]: Spent 2.52 s on a formula simplification. DAG size of input: 1231 DAG size of output: 128 [2020-11-07 02:13:00,807 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:13:00,808 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:13:00,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:13:01,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:13:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:13:01,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:13:01,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672765291] [2020-11-07 02:13:01,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:13:01,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-07 02:13:01,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032513484] [2020-11-07 02:13:01,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 02:13:01,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:13:01,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 02:13:01,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-07 02:13:01,131 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 7 states. [2020-11-07 02:13:03,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:13:03,887 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2020-11-07 02:13:03,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-07 02:13:03,888 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2020-11-07 02:13:03,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:13:03,889 INFO L225 Difference]: With dead ends: 67 [2020-11-07 02:13:03,889 INFO L226 Difference]: Without dead ends: 54 [2020-11-07 02:13:03,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-11-07 02:13:03,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-07 02:13:03,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2020-11-07 02:13:03,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-07 02:13:03,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2020-11-07 02:13:03,912 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 44 [2020-11-07 02:13:03,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:13:03,912 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2020-11-07 02:13:03,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 02:13:03,913 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2020-11-07 02:13:03,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-07 02:13:03,914 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:13:03,914 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:13:03,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 02:13:03,915 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:13:03,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:13:03,915 INFO L82 PathProgramCache]: Analyzing trace with hash -669265876, now seen corresponding path program 3 times [2020-11-07 02:13:03,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:13:03,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079466817] [2020-11-07 02:13:03,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:13:05,540 WARN L194 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 901 DAG size of output: 89 [2020-11-07 02:13:07,648 WARN L194 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 25 [2020-11-07 02:13:10,862 WARN L194 SmtUtils]: Spent 3.20 s on a formula simplification. DAG size of input: 2936 DAG size of output: 96 [2020-11-07 02:13:12,983 WARN L194 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 26 [2020-11-07 02:13:32,590 WARN L194 SmtUtils]: Spent 19.51 s on a formula simplification. DAG size of input: 10248 DAG size of output: 124 [2020-11-07 02:13:34,695 WARN L194 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 21 [2020-11-07 02:13:36,779 WARN L194 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 21 [2020-11-07 02:13:38,506 WARN L194 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 179 DAG size of output: 128 [2020-11-07 02:13:38,508 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:13:38,510 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:13:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:13:38,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:13:38,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:13:38,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:13:38,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079466817] [2020-11-07 02:13:38,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:13:38,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 02:13:38,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830974426] [2020-11-07 02:13:38,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 02:13:38,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:13:38,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 02:13:38,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 02:13:38,659 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 6 states. [2020-11-07 02:13:38,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:13:38,987 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2020-11-07 02:13:38,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 02:13:38,988 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-11-07 02:13:38,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:13:38,989 INFO L225 Difference]: With dead ends: 65 [2020-11-07 02:13:38,989 INFO L226 Difference]: Without dead ends: 52 [2020-11-07 02:13:38,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-07 02:13:38,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-07 02:13:39,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-11-07 02:13:39,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-07 02:13:39,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2020-11-07 02:13:39,005 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 45 [2020-11-07 02:13:39,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:13:39,006 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2020-11-07 02:13:39,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 02:13:39,006 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2020-11-07 02:13:39,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-07 02:13:39,007 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:13:39,007 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:13:39,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 02:13:39,008 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:13:39,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:13:39,012 INFO L82 PathProgramCache]: Analyzing trace with hash -475333492, now seen corresponding path program 1 times [2020-11-07 02:13:39,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:13:39,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007856495] [2020-11-07 02:13:39,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:13:42,254 WARN L194 SmtUtils]: Spent 3.16 s on a formula simplification. DAG size of input: 2935 DAG size of output: 95 [2020-11-07 02:13:43,152 WARN L194 SmtUtils]: Spent 849.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 89 [2020-11-07 02:13:45,246 WARN L194 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 25 [2020-11-07 02:13:47,337 WARN L194 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 25 [2020-11-07 02:13:48,323 WARN L194 SmtUtils]: Spent 984.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 96 [2020-11-07 02:13:50,502 WARN L194 SmtUtils]: Spent 2.11 s on a formula simplification that was a NOOP. DAG size: 26 [2020-11-07 02:13:51,960 WARN L194 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 186 DAG size of output: 110 [2020-11-07 02:13:54,051 WARN L194 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 21 [2020-11-07 02:13:56,135 WARN L194 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 21 [2020-11-07 02:13:58,165 WARN L194 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 179 DAG size of output: 146 [2020-11-07 02:13:58,168 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:13:58,170 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:13:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:13:58,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:13:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:13:58,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:13:58,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007856495] [2020-11-07 02:13:58,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:13:58,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-11-07 02:13:58,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535919443] [2020-11-07 02:13:58,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-07 02:13:58,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:13:58,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-07 02:13:58,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-11-07 02:13:58,835 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 17 states. [2020-11-07 02:14:00,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:14:00,240 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-11-07 02:14:00,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-07 02:14:00,241 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 45 [2020-11-07 02:14:00,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:14:00,242 INFO L225 Difference]: With dead ends: 64 [2020-11-07 02:14:00,242 INFO L226 Difference]: Without dead ends: 58 [2020-11-07 02:14:00,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=155, Invalid=715, Unknown=0, NotChecked=0, Total=870 [2020-11-07 02:14:00,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-07 02:14:00,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2020-11-07 02:14:00,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-07 02:14:00,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-11-07 02:14:00,262 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 45 [2020-11-07 02:14:00,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:14:00,262 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-11-07 02:14:00,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-07 02:14:00,262 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-11-07 02:14:00,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-07 02:14:00,263 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:14:00,264 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:14:00,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-07 02:14:00,264 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:14:00,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:14:00,265 INFO L82 PathProgramCache]: Analyzing trace with hash 975277658, now seen corresponding path program 2 times [2020-11-07 02:14:00,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:14:00,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100238035] [2020-11-07 02:14:00,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:14:01,362 WARN L194 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 95 DAG size of output: 95 [2020-11-07 02:14:02,333 WARN L194 SmtUtils]: Spent 931.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 89 [2020-11-07 02:14:04,429 WARN L194 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 25 [2020-11-07 02:14:06,520 WARN L194 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 25 [2020-11-07 02:14:07,594 WARN L194 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 96 DAG size of output: 96 [2020-11-07 02:14:08,713 WARN L194 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 97 DAG size of output: 97 [2020-11-07 02:14:10,851 WARN L194 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 26 [2020-11-07 02:14:12,985 WARN L194 SmtUtils]: Spent 2.13 s on a formula simplification that was a NOOP. DAG size: 26 [2020-11-07 02:14:14,427 WARN L194 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 186 DAG size of output: 110 [2020-11-07 02:14:16,514 WARN L194 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 21 [2020-11-07 02:14:18,598 WARN L194 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 21 [2020-11-07 02:14:21,584 WARN L194 SmtUtils]: Spent 2.98 s on a formula simplification. DAG size of input: 164 DAG size of output: 144 [2020-11-07 02:14:23,696 WARN L194 SmtUtils]: Spent 2.11 s on a formula simplification that was a NOOP. DAG size: 25 [2020-11-07 02:14:25,801 WARN L194 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 25 [2020-11-07 02:14:27,260 WARN L194 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 185 DAG size of output: 112 [2020-11-07 02:14:27,261 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:14:27,263 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:14:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:14:27,923 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 30 [2020-11-07 02:14:28,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:14:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:14:28,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:14:28,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100238035] [2020-11-07 02:14:28,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:14:28,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-11-07 02:14:28,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012721412] [2020-11-07 02:14:28,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-07 02:14:28,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:14:28,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-07 02:14:28,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2020-11-07 02:14:28,221 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 19 states. [2020-11-07 02:14:29,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:14:29,980 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2020-11-07 02:14:29,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-07 02:14:29,982 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 49 [2020-11-07 02:14:29,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:14:29,983 INFO L225 Difference]: With dead ends: 71 [2020-11-07 02:14:29,983 INFO L226 Difference]: Without dead ends: 65 [2020-11-07 02:14:29,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=144, Invalid=978, Unknown=0, NotChecked=0, Total=1122 [2020-11-07 02:14:29,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-11-07 02:14:30,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2020-11-07 02:14:30,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-07 02:14:30,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-11-07 02:14:30,024 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 49 [2020-11-07 02:14:30,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:14:30,026 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-11-07 02:14:30,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-07 02:14:30,026 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-11-07 02:14:30,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-07 02:14:30,029 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:14:30,030 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:14:30,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-07 02:14:30,030 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:14:30,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:14:30,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1816037672, now seen corresponding path program 3 times [2020-11-07 02:14:30,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:14:30,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759912212] [2020-11-07 02:14:30,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:14:31,069 WARN L194 SmtUtils]: Spent 975.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 95 [2020-11-07 02:14:31,946 WARN L194 SmtUtils]: Spent 835.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 89 [2020-11-07 02:14:34,041 WARN L194 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 25 [2020-11-07 02:14:37,477 WARN L194 SmtUtils]: Spent 3.39 s on a formula simplification. DAG size of input: 2936 DAG size of output: 96 [2020-11-07 02:14:38,644 WARN L194 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 97 DAG size of output: 97 [2020-11-07 02:14:42,814 WARN L194 SmtUtils]: Spent 4.17 s on a formula simplification that was a NOOP. DAG size: 26 [2020-11-07 02:14:46,975 WARN L194 SmtUtils]: Spent 4.16 s on a formula simplification that was a NOOP. DAG size: 26 [2020-11-07 02:14:49,553 WARN L194 SmtUtils]: Spent 2.57 s on a formula simplification. DAG size of input: 186 DAG size of output: 126 [2020-11-07 02:14:51,636 WARN L194 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 21 [2020-11-07 02:14:53,724 WARN L194 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 21 [2020-11-07 02:15:12,366 WARN L194 SmtUtils]: Spent 18.61 s on a formula simplification. DAG size of input: 8791 DAG size of output: 140 [2020-11-07 02:15:14,463 WARN L194 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 25 [2020-11-07 02:15:35,177 WARN L194 SmtUtils]: Spent 20.63 s on a formula simplification. DAG size of input: 9542 DAG size of output: 124 [2020-11-07 02:15:35,179 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:15:35,180 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:15:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:15:35,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:15:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:15:35,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:15:35,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759912212] [2020-11-07 02:15:35,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:15:35,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-07 02:15:35,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400870274] [2020-11-07 02:15:35,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 02:15:35,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:15:35,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 02:15:35,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-11-07 02:15:35,868 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 11 states. [2020-11-07 02:15:36,905 WARN L194 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-11-07 02:15:37,392 WARN L194 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-11-07 02:15:37,699 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-11-07 02:15:38,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:15:38,221 INFO L93 Difference]: Finished difference Result 101 states and 118 transitions. [2020-11-07 02:15:38,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-07 02:15:38,222 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 53 [2020-11-07 02:15:38,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:15:38,225 INFO L225 Difference]: With dead ends: 101 [2020-11-07 02:15:38,225 INFO L226 Difference]: Without dead ends: 88 [2020-11-07 02:15:38,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2020-11-07 02:15:38,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-11-07 02:15:38,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 83. [2020-11-07 02:15:38,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-11-07 02:15:38,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 94 transitions. [2020-11-07 02:15:38,276 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 94 transitions. Word has length 53 [2020-11-07 02:15:38,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:15:38,277 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 94 transitions. [2020-11-07 02:15:38,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 02:15:38,277 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 94 transitions. [2020-11-07 02:15:38,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-07 02:15:38,282 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:15:38,283 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:15:38,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-07 02:15:38,283 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:15:38,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:15:38,284 INFO L82 PathProgramCache]: Analyzing trace with hash -53814648, now seen corresponding path program 4 times [2020-11-07 02:15:38,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:15:38,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399923811] [2020-11-07 02:15:38,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:15:39,531 WARN L194 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 95 DAG size of output: 95 [2020-11-07 02:15:40,530 WARN L194 SmtUtils]: Spent 954.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 89 [2020-11-07 02:15:42,620 WARN L194 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 25 [2020-11-07 02:15:44,711 WARN L194 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 25 [2020-11-07 02:15:45,876 WARN L194 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 96 DAG size of output: 96 [2020-11-07 02:15:48,012 WARN L194 SmtUtils]: Spent 2.13 s on a formula simplification that was a NOOP. DAG size: 26 [2020-11-07 02:16:21,718 WARN L194 SmtUtils]: Spent 33.57 s on a formula simplification. DAG size of input: 9890 DAG size of output: 130 [2020-11-07 02:16:23,817 WARN L194 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 21 [2020-11-07 02:16:54,729 WARN L194 SmtUtils]: Spent 30.84 s on a formula simplification. DAG size of input: 9195 DAG size of output: 141 [2020-11-07 02:16:56,824 WARN L194 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 25 [2020-11-07 02:17:00,994 WARN L194 SmtUtils]: Spent 4.17 s on a formula simplification that was a NOOP. DAG size: 25 [2020-11-07 02:17:28,035 WARN L194 SmtUtils]: Spent 26.99 s on a formula simplification. DAG size of input: 9223 DAG size of output: 120 [2020-11-07 02:19:03,273 WARN L194 SmtUtils]: Spent 1.59 m on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-11-07 02:19:38,658 WARN L194 SmtUtils]: Spent 35.36 s on a formula simplification that was a NOOP. DAG size: 47 [2020-11-07 02:19:43,115 WARN L194 SmtUtils]: Spent 4.39 s on a formula simplification. DAG size of input: 471 DAG size of output: 131 [2020-11-07 02:19:43,121 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:19:43,122 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:19:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:43,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:19:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:43,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:19:43,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399923811] [2020-11-07 02:19:43,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:19:43,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 02:19:43,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859364139] [2020-11-07 02:19:43,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 02:19:43,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:19:43,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 02:19:43,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-07 02:19:43,413 INFO L87 Difference]: Start difference. First operand 83 states and 94 transitions. Second operand 8 states. [2020-11-07 02:19:44,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:19:44,269 INFO L93 Difference]: Finished difference Result 100 states and 114 transitions. [2020-11-07 02:19:44,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-07 02:19:44,271 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-11-07 02:19:44,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:19:44,272 INFO L225 Difference]: With dead ends: 100 [2020-11-07 02:19:44,273 INFO L226 Difference]: Without dead ends: 61 [2020-11-07 02:19:44,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-11-07 02:19:44,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-07 02:19:44,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-11-07 02:19:44,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-07 02:19:44,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2020-11-07 02:19:44,298 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 54 [2020-11-07 02:19:44,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:19:44,298 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2020-11-07 02:19:44,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 02:19:44,298 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2020-11-07 02:19:44,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-07 02:19:44,299 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:19:44,299 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:19:44,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-07 02:19:44,300 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:19:44,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:19:44,301 INFO L82 PathProgramCache]: Analyzing trace with hash 140117736, now seen corresponding path program 5 times [2020-11-07 02:19:44,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:19:44,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [579196339] [2020-11-07 02:19:44,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:19:46,114 WARN L194 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 95 DAG size of output: 95 [2020-11-07 02:19:47,644 WARN L194 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 89 DAG size of output: 89 [2020-11-07 02:19:51,100 WARN L194 SmtUtils]: Spent 3.36 s on a formula simplification. DAG size of input: 920 DAG size of output: 96 [2020-11-07 02:19:57,449 WARN L194 SmtUtils]: Spent 6.35 s on a formula simplification that was a NOOP. DAG size: 26 [2020-11-07 02:19:59,646 WARN L194 SmtUtils]: Spent 2.20 s on a formula simplification that was a NOOP. DAG size: 26 [2020-11-07 02:20:23,846 WARN L194 SmtUtils]: Spent 24.15 s on a formula simplification. DAG size of input: 9383 DAG size of output: 134 [2020-11-07 02:20:25,985 WARN L194 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 21 [2020-11-07 02:20:28,131 WARN L194 SmtUtils]: Spent 2.15 s on a formula simplification that was a NOOP. DAG size: 21 [2020-11-07 02:20:35,870 WARN L194 SmtUtils]: Spent 7.72 s on a formula simplification. DAG size of input: 3247 DAG size of output: 123 [2020-11-07 02:20:38,041 WARN L194 SmtUtils]: Spent 2.17 s on a formula simplification that was a NOOP. DAG size: 25 [2020-11-07 02:20:39,863 WARN L194 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 185 DAG size of output: 96 [2020-11-07 02:23:52,322 WARN L194 SmtUtils]: Spent 3.21 m on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-11-07 02:24:17,905 WARN L194 SmtUtils]: Spent 25.58 s on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2020-11-07 02:24:41,606 WARN L194 SmtUtils]: Spent 23.63 s on a formula simplification. DAG size of input: 11349 DAG size of output: 124 [2020-11-07 02:24:41,608 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:24:41,609 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:24:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:42,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:24:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:42,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:24:42,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [579196339] [2020-11-07 02:24:42,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:24:42,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-11-07 02:24:42,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307371420] [2020-11-07 02:24:42,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-07 02:24:42,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:24:42,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-07 02:24:42,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2020-11-07 02:24:42,215 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 15 states. [2020-11-07 02:24:43,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:24:43,521 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2020-11-07 02:24:43,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-07 02:24:43,522 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2020-11-07 02:24:43,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:24:43,523 INFO L225 Difference]: With dead ends: 59 [2020-11-07 02:24:43,523 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 02:24:43,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=122, Invalid=580, Unknown=0, NotChecked=0, Total=702 [2020-11-07 02:24:43,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 02:24:43,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 02:24:43,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 02:24:43,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 02:24:43,526 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2020-11-07 02:24:43,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:24:43,526 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 02:24:43,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-07 02:24:43,526 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 02:24:43,526 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 02:24:43,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-07 02:24:43,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 02:24:43,746 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 152 [2020-11-07 02:24:44,379 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 7 [2020-11-07 02:24:45,640 WARN L194 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 141 DAG size of output: 41 [2020-11-07 02:24:48,158 WARN L194 SmtUtils]: Spent 2.29 s on a formula simplification. DAG size of input: 172 DAG size of output: 21 [2020-11-07 02:24:48,358 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 23 [2020-11-07 02:24:48,461 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 7 [2020-11-07 02:24:48,612 WARN L194 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 21 [2020-11-07 02:24:48,900 WARN L194 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 41 [2020-11-07 02:24:49,115 WARN L194 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 26 [2020-11-07 02:24:49,338 WARN L194 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 21 [2020-11-07 02:24:49,556 WARN L194 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 23 [2020-11-07 02:24:49,973 WARN L194 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 41 [2020-11-07 02:24:50,093 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-11-07 02:24:50,094 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-11-07 02:24:50,094 INFO L269 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-11-07 02:24:50,094 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-11-07 02:24:50,094 INFO L269 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-11-07 02:24:50,094 INFO L269 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-11-07 02:24:50,094 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 02:24:50,094 INFO L269 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-11-07 02:24:50,094 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 02:24:50,095 INFO L269 CegarLoopResult]: At program point L3-5(line 3) the Hoare annotation is: true [2020-11-07 02:24:50,095 INFO L262 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2020-11-07 02:24:50,095 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= ~SIZE~0 |old(~SIZE~0)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-11-07 02:24:50,095 INFO L269 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-11-07 02:24:50,095 INFO L269 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-11-07 02:24:50,095 INFO L262 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2020-11-07 02:24:50,096 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 02:24:50,096 INFO L262 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2020-11-07 02:24:50,096 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 02:24:50,096 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 02:24:50,096 INFO L266 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 5 7) no Hoare annotation was computed. [2020-11-07 02:24:50,096 INFO L266 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-11-07 02:24:50,096 INFO L266 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-11-07 02:24:50,096 INFO L266 CegarLoopResult]: For program point L6-3(lines 5 7) no Hoare annotation was computed. [2020-11-07 02:24:50,097 INFO L266 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 5 7) no Hoare annotation was computed. [2020-11-07 02:24:50,097 INFO L262 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (let ((.cse3 (+ main_~i~0 main_~j~0 main_~k~0))) (and (<= (let ((.cse2 (div main_~l~0 4294967296))) (let ((.cse1 (* .cse2 (- 4294967296)))) (let ((.cse0 (div (+ main_~l~0 .cse1) 3))) (+ (* 6 .cse0) (* 8589934593 (div (+ (* .cse0 (- 3)) main_~l~0 .cse1) 4294967296)) (* 8589934592 .cse2) 2)))) (* 2 main_~l~0)) (<= main_~l~0 .cse3) (<= .cse3 main_~l~0) (<= main_~n~0 (+ (* 4294967296 (div main_~n~0 4294967296)) 20000001)))) (not (<= 20000001 ~SIZE~0))) [2020-11-07 02:24:50,097 INFO L262 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0))) (and (<= main_~l~0 .cse0) (<= (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)) (<= .cse0 main_~l~0) (<= main_~n~0 (+ (* 4294967296 (div main_~n~0 4294967296)) 20000001)))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-11-07 02:24:50,097 INFO L262 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0) (<= main_~n~0 (+ (* 4294967296 (div main_~n~0 4294967296)) 20000001)))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-11-07 02:24:50,097 INFO L269 CegarLoopResult]: At program point mainEXIT(lines 16 36) the Hoare annotation is: true [2020-11-07 02:24:50,097 INFO L262 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (or (and (= main_~k~0 0) (= main_~i~0 0) (= main_~j~0 0) (= main_~l~0 0) (<= main_~n~0 (+ (* 4294967296 (div main_~n~0 4294967296)) 20000001))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-11-07 02:24:50,098 INFO L262 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0)) (and (= main_~i~0 0) (= main_~l~0 0) (<= main_~n~0 (+ (* 4294967296 (div main_~n~0 4294967296)) 20000001)))) [2020-11-07 02:24:50,098 INFO L262 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (or (= main_~l~0 0) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-11-07 02:24:50,098 INFO L269 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: true [2020-11-07 02:24:50,098 INFO L269 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: true [2020-11-07 02:24:50,098 INFO L269 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: true [2020-11-07 02:24:50,098 INFO L269 CegarLoopResult]: At program point L17-2(line 17) the Hoare annotation is: true [2020-11-07 02:24:50,098 INFO L269 CegarLoopResult]: At program point L17-3(line 17) the Hoare annotation is: true [2020-11-07 02:24:50,098 INFO L269 CegarLoopResult]: At program point mainFINAL(lines 16 36) the Hoare annotation is: true [2020-11-07 02:24:50,098 INFO L269 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: true [2020-11-07 02:24:50,098 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 16 36) the Hoare annotation is: true [2020-11-07 02:24:50,099 INFO L262 CegarLoopResult]: At program point L28(lines 28 31) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (let ((.cse3 (+ main_~i~0 main_~j~0 main_~k~0))) (and (<= (let ((.cse2 (div main_~l~0 4294967296))) (let ((.cse1 (* .cse2 (- 4294967296)))) (let ((.cse0 (div (+ main_~l~0 .cse1) 3))) (+ (* 6 .cse0) (* 8589934593 (div (+ (* .cse0 (- 3)) main_~l~0 .cse1) 4294967296)) (* 8589934592 .cse2) 2)))) (* 2 main_~l~0)) (<= main_~l~0 .cse3) (<= .cse3 main_~l~0) (<= main_~n~0 (+ (* 4294967296 (div main_~n~0 4294967296)) 20000001)))) (not (<= 20000001 ~SIZE~0))) [2020-11-07 02:24:50,099 INFO L262 CegarLoopResult]: At program point L26(lines 26 31) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0) (<= main_~n~0 (+ (* 4294967296 (div main_~n~0 4294967296)) 20000001)))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-11-07 02:24:50,099 INFO L262 CegarLoopResult]: At program point L28-2(lines 26 31) the Hoare annotation is: (or (let ((.cse1 (+ main_~i~0 main_~j~0 main_~k~0)) (.cse0 (+ main_~l~0 1))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= main_~n~0 (+ (* 4294967296 (div main_~n~0 4294967296)) 20000001)))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-11-07 02:24:50,099 INFO L262 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (or (and (= main_~i~0 0) (= main_~j~0 0) (= main_~l~0 0) (<= main_~n~0 (+ (* 4294967296 (div main_~n~0 4294967296)) 20000001))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-11-07 02:24:50,099 INFO L262 CegarLoopResult]: At program point L24-2(lines 24 33) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0) (<= main_~n~0 (+ (* 4294967296 (div main_~n~0 4294967296)) 20000001)))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-11-07 02:24:50,099 INFO L262 CegarLoopResult]: At program point L24-3(lines 24 33) the Hoare annotation is: (or (let ((.cse2 (div (+ main_~i~0 main_~j~0 main_~k~0) 4294967296)) (.cse3 (div main_~l~0 4294967296))) (let ((.cse1 (* 4294967296 .cse3)) (.cse0 (+ main_~l~0 (* 4294967296 .cse2)))) (and (< .cse0 (+ main_~i~0 main_~j~0 main_~k~0 .cse1 1)) (< .cse2 (+ .cse3 1)) (<= (+ main_~i~0 main_~j~0 main_~k~0 .cse1) .cse0)))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-11-07 02:24:50,100 INFO L262 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (and (= main_~l~0 0) (<= main_~n~0 (+ (* 4294967296 (div main_~n~0 4294967296)) 20000001))) (not (<= 20000001 ~SIZE~0))) [2020-11-07 02:24:50,100 INFO L262 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (or (= main_~l~0 0) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-11-07 02:24:50,100 INFO L262 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: (or (= main_~l~0 0) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-11-07 02:24:50,100 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 8 13) the Hoare annotation is: true [2020-11-07 02:24:50,100 INFO L262 CegarLoopResult]: At program point L10(line 10) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 02:24:50,100 INFO L262 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 8 13) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-11-07 02:24:50,100 INFO L262 CegarLoopResult]: At program point L9(lines 9 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-11-07 02:24:50,101 INFO L262 CegarLoopResult]: At program point L10-1(line 10) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 02:24:50,101 INFO L262 CegarLoopResult]: At program point L9-2(lines 8 13) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-11-07 02:24:50,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:24:50 BoogieIcfgContainer [2020-11-07 02:24:50,123 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 02:24:50,134 INFO L168 Benchmark]: Toolchain (without parser) took 777869.64 ms. Allocated memory was 175.1 MB in the beginning and 367.0 MB in the end (delta: 191.9 MB). Free memory was 152.4 MB in the beginning and 197.5 MB in the end (delta: -45.0 MB). Peak memory consumption was 242.3 MB. Max. memory is 8.0 GB. [2020-11-07 02:24:50,135 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 125.8 MB. Free memory was 106.2 MB in the beginning and 106.1 MB in the end (delta: 67.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 02:24:50,136 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.83 ms. Allocated memory is still 175.1 MB. Free memory was 151.9 MB in the beginning and 142.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-07 02:24:50,136 INFO L168 Benchmark]: Boogie Preprocessor took 40.27 ms. Allocated memory is still 175.1 MB. Free memory was 142.1 MB in the beginning and 140.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 02:24:50,137 INFO L168 Benchmark]: RCFGBuilder took 487.00 ms. Allocated memory is still 175.1 MB. Free memory was 140.6 MB in the beginning and 154.7 MB in the end (delta: -14.1 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. [2020-11-07 02:24:50,142 INFO L168 Benchmark]: TraceAbstraction took 777018.51 ms. Allocated memory was 175.1 MB in the beginning and 367.0 MB in the end (delta: 191.9 MB). Free memory was 154.5 MB in the beginning and 197.5 MB in the end (delta: -43.0 MB). Peak memory consumption was 243.8 MB. Max. memory is 8.0 GB. [2020-11-07 02:24:50,145 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 125.8 MB. Free memory was 106.2 MB in the beginning and 106.1 MB in the end (delta: 67.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 307.83 ms. Allocated memory is still 175.1 MB. Free memory was 151.9 MB in the beginning and 142.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.27 ms. Allocated memory is still 175.1 MB. Free memory was 142.1 MB in the beginning and 140.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 487.00 ms. Allocated memory is still 175.1 MB. Free memory was 140.6 MB in the beginning and 154.7 MB in the end (delta: -14.1 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 777018.51 ms. Allocated memory was 175.1 MB in the beginning and 367.0 MB in the end (delta: 191.9 MB). Free memory was 154.5 MB in the beginning and 197.5 MB in the end (delta: -43.0 MB). Peak memory consumption was 243.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (((l <= i + j + k && i + j + k <= l) && n <= 4294967296 * (n / 4294967296) + 20000001) || !(SIZE <= 20000001)) || !(20000001 <= SIZE) - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 16]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 8]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 770.3s, OverallIterations: 12, TraceHistogramMax: 5, AutomataDifference: 18.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 393 SDtfs, 849 SDslu, 1065 SDs, 0 SdLazy, 2231 SolverSat, 184 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 10.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 254 GetRequests, 42 SyntacticMatches, 6 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 11.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred 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: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 50 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 49 LocationsWithAnnotation, 165 PreInvPairs, 230 NumberOfFragments, 668 HoareAnnotationTreeSize, 165 FomulaSimplifications, 113666 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 49 FomulaSimplificationsInter, 9954 FormulaSimplificationTreeSizeReductionInter, 5.8s 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...