/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-lit/ddlm2013.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 23:15:03,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 23:15:03,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 23:15:03,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 23:15:03,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 23:15:03,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 23:15:03,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 23:15:03,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 23:15:03,407 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 23:15:03,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 23:15:03,413 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 23:15:03,414 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 23:15:03,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 23:15:03,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 23:15:03,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 23:15:03,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 23:15:03,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 23:15:03,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 23:15:03,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 23:15:03,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 23:15:03,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 23:15:03,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 23:15:03,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 23:15:03,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 23:15:03,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 23:15:03,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 23:15:03,451 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 23:15:03,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 23:15:03,455 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 23:15:03,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 23:15:03,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 23:15:03,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 23:15:03,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 23:15:03,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 23:15:03,462 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 23:15:03,462 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 23:15:03,463 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 23:15:03,463 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 23:15:03,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 23:15:03,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 23:15:03,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 23:15:03,467 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 23:15:03,485 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 23:15:03,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 23:15:03,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 23:15:03,488 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 23:15:03,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 23:15:03,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 23:15:03,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 23:15:03,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 23:15:03,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 23:15:03,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 23:15:03,491 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 23:15:03,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 23:15:03,491 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 23:15:03,491 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 23:15:03,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 23:15:03,492 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 23:15:03,492 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 23:15:03,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 23:15:03,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 23:15:03,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 23:15:03,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 23:15:03,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 23:15:03,494 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-09-04 23:15:03,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 23:15:03,955 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 23:15:03,959 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 23:15:03,961 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 23:15:03,962 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 23:15:03,963 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/ddlm2013.i [2020-09-04 23:15:04,046 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25eb2564c/b27bdd885f8740fbbdd469a0a4c2932f/FLAG2cec4953d [2020-09-04 23:15:04,610 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 23:15:04,611 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/ddlm2013.i [2020-09-04 23:15:04,620 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25eb2564c/b27bdd885f8740fbbdd469a0a4c2932f/FLAG2cec4953d [2020-09-04 23:15:04,936 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25eb2564c/b27bdd885f8740fbbdd469a0a4c2932f [2020-09-04 23:15:04,948 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 23:15:04,950 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 23:15:04,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 23:15:04,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 23:15:04,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 23:15:04,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:15:04" (1/1) ... [2020-09-04 23:15:04,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4694b766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:04, skipping insertion in model container [2020-09-04 23:15:04,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:15:04" (1/1) ... [2020-09-04 23:15:04,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 23:15:04,992 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 23:15:05,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:15:05,205 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 23:15:05,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:15:05,238 INFO L208 MainTranslator]: Completed translation [2020-09-04 23:15:05,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:05 WrapperNode [2020-09-04 23:15:05,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 23:15:05,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 23:15:05,239 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 23:15:05,239 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 23:15:05,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:05" (1/1) ... [2020-09-04 23:15:05,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:05" (1/1) ... [2020-09-04 23:15:05,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:05" (1/1) ... [2020-09-04 23:15:05,340 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:05" (1/1) ... [2020-09-04 23:15:05,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:05" (1/1) ... [2020-09-04 23:15:05,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:05" (1/1) ... [2020-09-04 23:15:05,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:05" (1/1) ... [2020-09-04 23:15:05,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 23:15:05,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 23:15:05,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 23:15:05,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 23:15:05,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:05" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 23:15:05,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 23:15:05,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 23:15:05,444 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 23:15:05,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 23:15:05,444 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 23:15:05,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 23:15:05,444 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 23:15:05,445 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 23:15:05,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 23:15:05,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 23:15:05,445 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 23:15:05,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 23:15:05,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 23:15:05,748 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 23:15:05,748 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 23:15:05,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:15:05 BoogieIcfgContainer [2020-09-04 23:15:05,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 23:15:05,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 23:15:05,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 23:15:05,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 23:15:05,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 11:15:04" (1/3) ... [2020-09-04 23:15:05,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@722c037d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:15:05, skipping insertion in model container [2020-09-04 23:15:05,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:05" (2/3) ... [2020-09-04 23:15:05,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@722c037d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:15:05, skipping insertion in model container [2020-09-04 23:15:05,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:15:05" (3/3) ... [2020-09-04 23:15:05,775 INFO L109 eAbstractionObserver]: Analyzing ICFG ddlm2013.i [2020-09-04 23:15:05,788 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 23:15:05,805 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 23:15:05,824 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 23:15:05,851 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 23:15:05,852 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 23:15:05,852 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 23:15:05,852 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 23:15:05,852 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 23:15:05,852 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 23:15:05,852 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 23:15:05,853 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 23:15:05,872 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-04 23:15:05,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-04 23:15:05,886 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:05,888 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] [2020-09-04 23:15:05,888 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:05,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:05,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1686675663, now seen corresponding path program 1 times [2020-09-04 23:15:05,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:05,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086899606] [2020-09-04 23:15:05,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:06,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:06,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:15:06,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086899606] [2020-09-04 23:15:06,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:15:06,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-04 23:15:06,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329623385] [2020-09-04 23:15:06,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-04 23:15:06,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:06,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-04 23:15:06,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-04 23:15:06,097 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2020-09-04 23:15:06,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:06,132 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2020-09-04 23:15:06,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-04 23:15:06,133 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2020-09-04 23:15:06,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:06,144 INFO L225 Difference]: With dead ends: 57 [2020-09-04 23:15:06,144 INFO L226 Difference]: Without dead ends: 37 [2020-09-04 23:15:06,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-04 23:15:06,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-04 23:15:06,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-09-04 23:15:06,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-04 23:15:06,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-09-04 23:15:06,200 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 22 [2020-09-04 23:15:06,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:06,201 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-09-04 23:15:06,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-04 23:15:06,202 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-09-04 23:15:06,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-04 23:15:06,203 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:06,203 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:06,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 23:15:06,204 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:06,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:06,205 INFO L82 PathProgramCache]: Analyzing trace with hash 779060326, now seen corresponding path program 1 times [2020-09-04 23:15:06,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:06,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273569061] [2020-09-04 23:15:06,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:06,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:06,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:06,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:15:06,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273569061] [2020-09-04 23:15:06,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:15:06,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 23:15:06,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324927743] [2020-09-04 23:15:06,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 23:15:06,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:06,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 23:15:06,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 23:15:06,592 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 6 states. [2020-09-04 23:15:06,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:06,731 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2020-09-04 23:15:06,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 23:15:06,732 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-09-04 23:15:06,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:06,734 INFO L225 Difference]: With dead ends: 49 [2020-09-04 23:15:06,734 INFO L226 Difference]: Without dead ends: 42 [2020-09-04 23:15:06,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-04 23:15:06,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-04 23:15:06,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2020-09-04 23:15:06,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-04 23:15:06,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-09-04 23:15:06,748 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 24 [2020-09-04 23:15:06,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:06,749 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-09-04 23:15:06,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 23:15:06,749 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-09-04 23:15:06,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-04 23:15:06,750 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:06,751 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-04 23:15:06,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 23:15:06,751 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:06,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:06,752 INFO L82 PathProgramCache]: Analyzing trace with hash -579098768, now seen corresponding path program 1 times [2020-09-04 23:15:06,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:06,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775976446] [2020-09-04 23:15:06,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:07,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:07,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:15:07,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775976446] [2020-09-04 23:15:07,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:07,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-04 23:15:07,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393230734] [2020-09-04 23:15:07,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 23:15:07,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:07,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 23:15:07,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-04 23:15:07,261 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 11 states. [2020-09-04 23:15:07,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:07,605 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2020-09-04 23:15:07,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-04 23:15:07,606 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-09-04 23:15:07,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:07,608 INFO L225 Difference]: With dead ends: 67 [2020-09-04 23:15:07,608 INFO L226 Difference]: Without dead ends: 60 [2020-09-04 23:15:07,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2020-09-04 23:15:07,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-04 23:15:07,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2020-09-04 23:15:07,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-04 23:15:07,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-09-04 23:15:07,622 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 34 [2020-09-04 23:15:07,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:07,622 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-09-04 23:15:07,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 23:15:07,623 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-09-04 23:15:07,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-04 23:15:07,624 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:07,624 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-04 23:15:07,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 23:15:07,625 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:07,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:07,625 INFO L82 PathProgramCache]: Analyzing trace with hash -44019760, now seen corresponding path program 1 times [2020-09-04 23:15:07,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:07,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663681869] [2020-09-04 23:15:07,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:07,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:07,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:07,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:15:07,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663681869] [2020-09-04 23:15:07,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:15:07,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 23:15:07,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077559359] [2020-09-04 23:15:07,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 23:15:07,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:07,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 23:15:07,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 23:15:07,695 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 4 states. [2020-09-04 23:15:07,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:07,753 INFO L93 Difference]: Finished difference Result 95 states and 101 transitions. [2020-09-04 23:15:07,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 23:15:07,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-09-04 23:15:07,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:07,760 INFO L225 Difference]: With dead ends: 95 [2020-09-04 23:15:07,760 INFO L226 Difference]: Without dead ends: 75 [2020-09-04 23:15:07,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 23:15:07,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-04 23:15:07,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 61. [2020-09-04 23:15:07,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-04 23:15:07,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2020-09-04 23:15:07,785 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 34 [2020-09-04 23:15:07,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:07,786 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2020-09-04 23:15:07,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 23:15:07,786 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2020-09-04 23:15:07,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-04 23:15:07,788 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:07,788 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-04 23:15:07,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 23:15:07,788 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:07,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:07,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1711187313, now seen corresponding path program 1 times [2020-09-04 23:15:07,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:07,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765000801] [2020-09-04 23:15:07,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:07,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:07,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:07,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 23:15:07,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765000801] [2020-09-04 23:15:07,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:15:07,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 23:15:07,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469935245] [2020-09-04 23:15:07,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 23:15:07,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:07,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 23:15:07,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 23:15:07,828 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand 3 states. [2020-09-04 23:15:07,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:07,841 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2020-09-04 23:15:07,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 23:15:07,842 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-09-04 23:15:07,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:07,843 INFO L225 Difference]: With dead ends: 81 [2020-09-04 23:15:07,843 INFO L226 Difference]: Without dead ends: 51 [2020-09-04 23:15:07,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 23:15:07,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-04 23:15:07,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-09-04 23:15:07,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-04 23:15:07,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2020-09-04 23:15:07,852 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 36 [2020-09-04 23:15:07,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:07,853 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2020-09-04 23:15:07,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 23:15:07,853 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2020-09-04 23:15:07,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-04 23:15:07,854 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:07,854 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 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] [2020-09-04 23:15:07,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 23:15:07,855 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:07,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:07,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1122436602, now seen corresponding path program 2 times [2020-09-04 23:15:07,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:07,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487315510] [2020-09-04 23:15:07,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:08,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:08,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:08,325 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:15:08,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487315510] [2020-09-04 23:15:08,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:08,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-04 23:15:08,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537449970] [2020-09-04 23:15:08,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-04 23:15:08,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:08,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-04 23:15:08,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-09-04 23:15:08,328 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 15 states. [2020-09-04 23:15:08,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:08,884 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2020-09-04 23:15:08,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 23:15:08,885 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2020-09-04 23:15:08,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:08,886 INFO L225 Difference]: With dead ends: 81 [2020-09-04 23:15:08,886 INFO L226 Difference]: Without dead ends: 71 [2020-09-04 23:15:08,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2020-09-04 23:15:08,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-04 23:15:08,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 51. [2020-09-04 23:15:08,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-04 23:15:08,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2020-09-04 23:15:08,897 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 44 [2020-09-04 23:15:08,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:08,897 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2020-09-04 23:15:08,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-04 23:15:08,897 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2020-09-04 23:15:08,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-04 23:15:08,899 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:08,899 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 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] [2020-09-04 23:15:08,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 23:15:08,899 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:08,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:08,900 INFO L82 PathProgramCache]: Analyzing trace with hash 937303643, now seen corresponding path program 1 times [2020-09-04 23:15:08,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:08,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860033353] [2020-09-04 23:15:08,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:08,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:08,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:08,980 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 23:15:08,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860033353] [2020-09-04 23:15:08,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:15:08,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 23:15:08,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767089964] [2020-09-04 23:15:08,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 23:15:08,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:08,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 23:15:08,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 23:15:08,983 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 4 states. [2020-09-04 23:15:09,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:09,011 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2020-09-04 23:15:09,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 23:15:09,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-04 23:15:09,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:09,013 INFO L225 Difference]: With dead ends: 59 [2020-09-04 23:15:09,013 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 23:15:09,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 23:15:09,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 23:15:09,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 23:15:09,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 23:15:09,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 23:15:09,017 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2020-09-04 23:15:09,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:09,018 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 23:15:09,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 23:15:09,018 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 23:15:09,018 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 23:15:09,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 23:15:09,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 23:15:09,787 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 23:15:09,787 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-09-04 23:15:09,787 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-09-04 23:15:09,788 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 23:15:09,788 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 23:15:09,788 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-09-04 23:15:09,788 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-04 23:15:09,788 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-04 23:15:09,788 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-04 23:15:09,788 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-04 23:15:09,789 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-04 23:15:09,789 INFO L264 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (= main_~flag~0 0) [2020-09-04 23:15:09,789 INFO L264 CegarLoopResult]: At program point L31-1(line 31) the Hoare annotation is: (= main_~flag~0 0) [2020-09-04 23:15:09,789 INFO L264 CegarLoopResult]: At program point L31-2(line 31) the Hoare annotation is: (= main_~flag~0 0) [2020-09-04 23:15:09,790 INFO L264 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (let ((.cse6 (+ main_~j~0 main_~b~0)) (.cse5 (+ main_~i~0 main_~a~0 1))) (let ((.cse0 (<= .cse6 .cse5)) (.cse1 (<= main_~a~0 main_~b~0)) (.cse2 (<= .cse5 .cse6)) (.cse3 (<= main_~b~0 main_~a~0))) (or (= main_~flag~0 0) (and (<= main_~i~0 0) .cse0 .cse1 (<= 0 main_~i~0) .cse2 .cse3) (let ((.cse4 (div main_~i~0 2))) (and .cse0 .cse1 .cse2 .cse3 (< 0 .cse4) (<= main_~i~0 (* 2 .cse4))))))) [2020-09-04 23:15:09,790 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 13 38) the Hoare annotation is: true [2020-09-04 23:15:09,790 INFO L264 CegarLoopResult]: At program point L19(lines 19 23) the Hoare annotation is: (and (<= main_~a~0 0) (<= 0 main_~b~0) (<= (+ (* 2 main_~j~0) main_~b~0) (+ main_~a~0 2)) (<= main_~b~0 main_~a~0) (<= (+ main_~a~0 1) (+ main_~j~0 main_~b~0))) [2020-09-04 23:15:09,790 INFO L271 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-09-04 23:15:09,790 INFO L271 CegarLoopResult]: At program point L15-1(line 15) the Hoare annotation is: true [2020-09-04 23:15:09,791 INFO L271 CegarLoopResult]: At program point L15-2(line 15) the Hoare annotation is: true [2020-09-04 23:15:09,791 INFO L264 CegarLoopResult]: At program point L28(lines 28 32) the Hoare annotation is: (or (= main_~flag~0 0) (let ((.cse2 (div main_~i~0 2)) (.cse1 (+ main_~j~0 main_~b~0 1)) (.cse0 (+ main_~i~0 main_~a~0))) (and (<= .cse0 .cse1) (<= main_~a~0 main_~b~0) (<= main_~b~0 main_~a~0) (< 0 .cse2) (<= main_~i~0 (* 2 .cse2)) (<= .cse1 .cse0)))) [2020-09-04 23:15:09,791 INFO L264 CegarLoopResult]: At program point L28-2(lines 13 38) the Hoare annotation is: (let ((.cse6 (+ main_~j~0 main_~b~0)) (.cse5 (+ main_~i~0 main_~a~0 1))) (let ((.cse0 (<= .cse6 .cse5)) (.cse1 (<= main_~a~0 main_~b~0)) (.cse2 (<= .cse5 .cse6)) (.cse3 (<= main_~b~0 main_~a~0))) (or (= main_~flag~0 0) (let ((.cse4 (div main_~i~0 2))) (and .cse0 .cse1 .cse2 .cse3 (< 0 .cse4) (<= main_~i~0 (* 2 .cse4)))) (and (<= main_~i~0 0) .cse0 .cse1 (<= 0 main_~i~0) .cse2 .cse3)))) [2020-09-04 23:15:09,792 INFO L264 CegarLoopResult]: At program point L24(lines 24 33) the Hoare annotation is: (let ((.cse6 (+ main_~j~0 main_~b~0)) (.cse5 (+ main_~i~0 main_~a~0 1))) (let ((.cse0 (<= .cse6 .cse5)) (.cse1 (<= main_~a~0 main_~b~0)) (.cse2 (<= .cse5 .cse6)) (.cse3 (<= main_~b~0 main_~a~0))) (or (= main_~flag~0 0) (let ((.cse4 (div main_~i~0 2))) (and .cse0 .cse1 .cse2 .cse3 (< 0 .cse4) (<= main_~i~0 (* 2 .cse4)))) (and (<= main_~i~0 0) .cse0 .cse1 (<= 0 main_~i~0) .cse2 .cse3)))) [2020-09-04 23:15:09,792 INFO L264 CegarLoopResult]: At program point L24-1(line 24) the Hoare annotation is: (or (= main_~flag~0 0) (and (< (+ (* 4294967296 (div main_~a~0 4294967296)) main_~b~0) (+ (* 4294967296 (div main_~b~0 4294967296)) main_~a~0 1)) (<= 0 main_~a~0) (<= main_~a~0 0) (<= 0 main_~b~0)) (and (<= main_~a~0 main_~b~0) (<= main_~b~0 main_~a~0))) [2020-09-04 23:15:09,792 INFO L264 CegarLoopResult]: At program point L24-3(line 24) the Hoare annotation is: (let ((.cse6 (+ main_~j~0 main_~b~0)) (.cse5 (+ main_~i~0 main_~a~0 1))) (let ((.cse0 (<= .cse6 .cse5)) (.cse1 (<= main_~a~0 main_~b~0)) (.cse2 (<= .cse5 .cse6)) (.cse3 (<= main_~b~0 main_~a~0))) (or (= main_~flag~0 0) (and (<= main_~i~0 0) .cse0 .cse1 (<= 0 main_~i~0) .cse2 .cse3) (let ((.cse4 (div main_~i~0 2))) (and .cse0 .cse1 .cse2 .cse3 (< 0 .cse4) (<= main_~i~0 (* 2 .cse4))))))) [2020-09-04 23:15:09,792 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (<= main_~a~0 0) (<= 0 main_~b~0) (<= (+ (* 2 main_~j~0) main_~b~0) (+ main_~a~0 2)) (<= main_~b~0 main_~a~0) (<= (+ main_~a~0 1) (+ main_~j~0 main_~b~0))) [2020-09-04 23:15:09,793 INFO L264 CegarLoopResult]: At program point L24-4(lines 13 38) the Hoare annotation is: (or (= main_~flag~0 0) (and (< (+ (* 4294967296 (div main_~a~0 4294967296)) main_~b~0) (+ (* 4294967296 (div main_~b~0 4294967296)) main_~a~0 1)) (<= 0 main_~a~0) (<= main_~a~0 0) (<= 0 main_~b~0)) (and (<= main_~a~0 main_~b~0) (<= main_~b~0 main_~a~0))) [2020-09-04 23:15:09,793 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-09-04 23:15:09,793 INFO L264 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (or (= main_~flag~0 0) (let ((.cse2 (div main_~i~0 2)) (.cse1 (+ main_~j~0 main_~b~0 1)) (.cse0 (+ main_~i~0 main_~a~0))) (and (<= .cse0 .cse1) (<= main_~a~0 main_~b~0) (<= main_~b~0 main_~a~0) (< 0 .cse2) (<= main_~i~0 (* 2 .cse2)) (<= .cse1 .cse0)))) [2020-09-04 23:15:09,793 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (let ((.cse6 (+ main_~j~0 main_~b~0)) (.cse5 (+ main_~i~0 main_~a~0 1))) (let ((.cse0 (<= .cse6 .cse5)) (.cse1 (<= main_~a~0 main_~b~0)) (.cse2 (<= .cse5 .cse6)) (.cse3 (<= main_~b~0 main_~a~0))) (or (= main_~flag~0 0) (and (<= main_~i~0 0) .cse0 .cse1 (<= 0 main_~i~0) .cse2 .cse3) (let ((.cse4 (div main_~i~0 2))) (and .cse0 .cse1 .cse2 .cse3 (< 0 .cse4) (<= main_~i~0 (* 2 .cse4))))))) [2020-09-04 23:15:09,794 INFO L264 CegarLoopResult]: At program point L25-1(line 25) the Hoare annotation is: (let ((.cse5 (+ main_~j~0 main_~b~0))) (let ((.cse0 (<= (+ main_~i~0 main_~a~0 1) .cse5)) (.cse1 (<= (+ (* 2 main_~j~0) main_~b~0) (+ |main_#t~post2| (* 2 main_~i~0) 2))) (.cse2 (<= main_~b~0 main_~a~0)) (.cse3 (<= (+ |main_#t~post2| main_~i~0 1) .cse5))) (or (let ((.cse4 (div main_~i~0 2))) (and .cse0 .cse1 .cse2 .cse3 (< 0 .cse4) (<= main_~i~0 (* 2 .cse4)))) (= main_~flag~0 0) (and (<= main_~i~0 0) .cse0 (<= 0 main_~i~0) .cse1 .cse2 .cse3)))) [2020-09-04 23:15:09,794 INFO L264 CegarLoopResult]: At program point L25-2(line 25) the Hoare annotation is: (let ((.cse12 (* 2 main_~i~0))) (let ((.cse10 (+ |main_#t~post2| .cse12 2)) (.cse11 (+ .cse12 main_~a~0 1)) (.cse9 (+ (* 2 main_~j~0) main_~b~0)) (.cse8 (+ main_~j~0 main_~b~0)) (.cse7 (+ |main_#t~post2| main_~i~0 1))) (let ((.cse0 (<= .cse8 .cse7)) (.cse1 (<= .cse11 .cse9)) (.cse2 (<= .cse9 .cse11)) (.cse3 (<= .cse10 .cse9)) (.cse4 (<= .cse9 .cse10)) (.cse5 (<= .cse7 .cse8))) (or (and (<= main_~i~0 0) .cse0 .cse1 .cse2 (<= 0 main_~i~0) .cse3 .cse4 .cse5) (let ((.cse6 (div main_~i~0 2))) (and .cse0 .cse1 .cse2 .cse3 (< 0 .cse6) .cse4 .cse5 (<= main_~i~0 (* 2 .cse6)))) (= main_~flag~0 0))))) [2020-09-04 23:15:09,794 INFO L264 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (and (<= 0 main_~a~0) (<= main_~a~0 0)) [2020-09-04 23:15:09,795 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 13 38) the Hoare annotation is: true [2020-09-04 23:15:09,795 INFO L271 CegarLoopResult]: At program point L34(lines 34 36) the Hoare annotation is: true [2020-09-04 23:15:09,795 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 38) the Hoare annotation is: true [2020-09-04 23:15:09,795 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (let ((.cse6 (+ (* 2 main_~i~0) main_~a~0 1)) (.cse5 (+ (* 2 main_~j~0) main_~b~0)) (.cse8 (+ main_~i~0 main_~a~0)) (.cse7 (+ main_~j~0 main_~b~0))) (let ((.cse0 (<= .cse8 .cse7)) (.cse1 (<= .cse7 .cse8)) (.cse2 (<= .cse6 .cse5)) (.cse3 (<= .cse5 .cse6))) (or (and .cse0 (<= main_~i~0 0) .cse1 .cse2 .cse3 (<= 0 main_~i~0)) (= main_~flag~0 0) (let ((.cse4 (div main_~i~0 2))) (and .cse0 .cse1 .cse2 .cse3 (< 0 .cse4) (<= main_~i~0 (* 2 .cse4))))))) [2020-09-04 23:15:09,795 INFO L264 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (let ((.cse1 (+ main_~a~0 1)) (.cse0 (+ main_~j~0 main_~b~0))) (and (<= main_~a~0 0) (= main_~flag~0 0) (<= .cse0 .cse1) (<= 0 main_~b~0) (<= main_~b~0 main_~a~0) (<= .cse1 .cse0))) [2020-09-04 23:15:09,796 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (<= main_~a~0 0) (<= 0 main_~b~0) (<= main_~b~0 main_~a~0)) [2020-09-04 23:15:09,796 INFO L271 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-09-04 23:15:09,796 INFO L271 CegarLoopResult]: At program point L14-1(line 14) the Hoare annotation is: true [2020-09-04 23:15:09,796 INFO L271 CegarLoopResult]: At program point L14-2(line 14) the Hoare annotation is: true [2020-09-04 23:15:09,796 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (or (and (< (+ (* 4294967296 (div main_~a~0 4294967296)) main_~b~0) (+ (* 4294967296 (div main_~b~0 4294967296)) main_~a~0 1)) (<= 0 main_~a~0) (<= main_~a~0 0) (<= 0 main_~b~0)) (and (<= main_~a~0 main_~b~0) (<= main_~b~0 main_~a~0))) [2020-09-04 23:15:09,797 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-04 23:15:09,797 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 6 11) the Hoare annotation is: true [2020-09-04 23:15:09,797 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-09-04 23:15:09,797 INFO L264 CegarLoopResult]: At program point L7(lines 7 9) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-09-04 23:15:09,797 INFO L271 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: true [2020-09-04 23:15:09,797 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-09-04 23:15:09,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 11:15:09 BoogieIcfgContainer [2020-09-04 23:15:09,813 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 23:15:09,816 INFO L168 Benchmark]: Toolchain (without parser) took 4864.97 ms. Allocated memory was 140.5 MB in the beginning and 244.8 MB in the end (delta: 104.3 MB). Free memory was 103.2 MB in the beginning and 166.5 MB in the end (delta: -63.2 MB). Peak memory consumption was 106.8 MB. Max. memory is 7.1 GB. [2020-09-04 23:15:09,817 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 140.5 MB. Free memory was 121.8 MB in the beginning and 121.4 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-09-04 23:15:09,818 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.45 ms. Allocated memory is still 140.5 MB. Free memory was 102.8 MB in the beginning and 93.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-04 23:15:09,819 INFO L168 Benchmark]: Boogie Preprocessor took 122.01 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 93.3 MB in the beginning and 181.9 MB in the end (delta: -88.6 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-09-04 23:15:09,820 INFO L168 Benchmark]: RCFGBuilder took 399.21 ms. Allocated memory is still 203.4 MB. Free memory was 181.9 MB in the beginning and 166.8 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. [2020-09-04 23:15:09,821 INFO L168 Benchmark]: TraceAbstraction took 4050.66 ms. Allocated memory was 203.4 MB in the beginning and 244.8 MB in the end (delta: 41.4 MB). Free memory was 166.8 MB in the beginning and 166.5 MB in the end (delta: 378.2 kB). Peak memory consumption was 107.5 MB. Max. memory is 7.1 GB. [2020-09-04 23:15:09,825 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 140.5 MB. Free memory was 121.8 MB in the beginning and 121.4 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 287.45 ms. Allocated memory is still 140.5 MB. Free memory was 102.8 MB in the beginning and 93.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.01 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 93.3 MB in the beginning and 181.9 MB in the end (delta: -88.6 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 399.21 ms. Allocated memory is still 203.4 MB. Free memory was 181.9 MB in the beginning and 166.8 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4050.66 ms. Allocated memory was 203.4 MB in the beginning and 244.8 MB in the end (delta: 41.4 MB). Free memory was 166.8 MB in the beginning and 166.5 MB in the end (delta: 378.2 kB). Peak memory consumption was 107.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 6]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 49 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 287 SDtfs, 154 SDslu, 803 SDs, 0 SdLazy, 356 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 45 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 44 LocationsWithAnnotation, 86 PreInvPairs, 156 NumberOfFragments, 1003 HoareAnnotationTreeSize, 86 FomulaSimplifications, 1583 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 44 FomulaSimplificationsInter, 125 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 240 NumberOfCodeBlocks, 240 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 233 ConstructedInterpolants, 0 QuantifiedInterpolants, 62459 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 17/33 InterpolantCoveringCapability, 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...