/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 --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/loops/sum01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 06:35:15,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 06:35:15,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 06:35:15,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 06:35:15,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 06:35:15,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 06:35:15,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 06:35:15,480 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 06:35:15,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 06:35:15,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 06:35:15,484 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 06:35:15,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 06:35:15,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 06:35:15,491 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 06:35:15,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 06:35:15,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 06:35:15,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 06:35:15,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 06:35:15,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 06:35:15,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 06:35:15,529 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 06:35:15,556 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 06:35:15,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 06:35:15,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 06:35:15,562 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 06:35:15,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 06:35:15,562 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 06:35:15,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 06:35:15,562 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 06:35:15,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 06:35:15,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 06:35:15,564 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 06:35:15,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 06:35:15,565 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 06:35:15,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 06:35:15,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 06:35:15,565 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 06:35:15,565 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 06:35:15,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 06:35:15,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 06:35:15,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 06:35:15,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 06:35:15,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 06:35:15,567 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 06:35:15,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 06:35:16,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 06:35:16,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 06:35:16,008 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 06:35:16,009 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 06:35:16,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01-2.i [2020-11-07 06:35:16,080 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8860e8d06/a0c512bd85d249a098f849ac2cf7c6f0/FLAG063618015 [2020-11-07 06:35:16,646 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 06:35:16,647 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01-2.i [2020-11-07 06:35:16,654 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8860e8d06/a0c512bd85d249a098f849ac2cf7c6f0/FLAG063618015 [2020-11-07 06:35:17,008 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8860e8d06/a0c512bd85d249a098f849ac2cf7c6f0 [2020-11-07 06:35:17,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 06:35:17,021 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 06:35:17,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 06:35:17,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 06:35:17,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 06:35:17,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:35:17" (1/1) ... [2020-11-07 06:35:17,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c31796a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:17, skipping insertion in model container [2020-11-07 06:35:17,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:35:17" (1/1) ... [2020-11-07 06:35:17,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 06:35:17,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 06:35:17,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:35:17,292 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 06:35:17,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:35:17,330 INFO L208 MainTranslator]: Completed translation [2020-11-07 06:35:17,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:17 WrapperNode [2020-11-07 06:35:17,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 06:35:17,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 06:35:17,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 06:35:17,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 06:35:17,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:17" (1/1) ... [2020-11-07 06:35:17,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:17" (1/1) ... [2020-11-07 06:35:17,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:17" (1/1) ... [2020-11-07 06:35:17,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:17" (1/1) ... [2020-11-07 06:35:17,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:17" (1/1) ... [2020-11-07 06:35:17,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:17" (1/1) ... [2020-11-07 06:35:17,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:17" (1/1) ... [2020-11-07 06:35:17,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 06:35:17,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 06:35:17,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 06:35:17,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 06:35:17,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:17" (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 06:35:17,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 06:35:17,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 06:35:17,457 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 06:35:17,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 06:35:17,457 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 06:35:17,458 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 06:35:17,459 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 06:35:17,459 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-07 06:35:17,459 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-07 06:35:17,459 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 06:35:17,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 06:35:17,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 06:35:17,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 06:35:17,460 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 06:35:17,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 06:35:17,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 06:35:17,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 06:35:17,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 06:35:17,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 06:35:17,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 06:35:17,860 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 06:35:17,860 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 06:35:17,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:35:17 BoogieIcfgContainer [2020-11-07 06:35:17,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 06:35:17,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 06:35:17,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 06:35:17,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 06:35:17,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:35:17" (1/3) ... [2020-11-07 06:35:17,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f86f95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:35:17, skipping insertion in model container [2020-11-07 06:35:17,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:17" (2/3) ... [2020-11-07 06:35:17,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f86f95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:35:17, skipping insertion in model container [2020-11-07 06:35:17,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:35:17" (3/3) ... [2020-11-07 06:35:17,889 INFO L111 eAbstractionObserver]: Analyzing ICFG sum01-2.i [2020-11-07 06:35:17,929 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 06:35:17,936 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 06:35:17,952 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 06:35:17,978 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 06:35:17,978 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 06:35:17,978 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 06:35:17,979 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 06:35:17,979 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 06:35:17,979 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 06:35:17,979 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 06:35:17,979 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 06:35:17,996 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-11-07 06:35:18,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-07 06:35:18,007 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:35:18,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:35:18,008 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:35:18,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:35:18,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1000122115, now seen corresponding path program 1 times [2020-11-07 06:35:18,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:35:18,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146912093] [2020-11-07 06:35:18,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:35:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:18,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:35:18,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:18,280 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 06:35:18,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146912093] [2020-11-07 06:35:18,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:35:18,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 06:35:18,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468381120] [2020-11-07 06:35:18,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 06:35:18,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:35:18,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 06:35:18,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 06:35:18,313 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2020-11-07 06:35:18,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:35:18,407 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-11-07 06:35:18,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 06:35:18,409 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-11-07 06:35:18,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:35:18,418 INFO L225 Difference]: With dead ends: 54 [2020-11-07 06:35:18,418 INFO L226 Difference]: Without dead ends: 30 [2020-11-07 06:35:18,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 06:35:18,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-07 06:35:18,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-07 06:35:18,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-07 06:35:18,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2020-11-07 06:35:18,480 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 25 [2020-11-07 06:35:18,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:35:18,480 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2020-11-07 06:35:18,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 06:35:18,481 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2020-11-07 06:35:18,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-07 06:35:18,482 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:35:18,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:35:18,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 06:35:18,483 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:35:18,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:35:18,484 INFO L82 PathProgramCache]: Analyzing trace with hash -397720652, now seen corresponding path program 1 times [2020-11-07 06:35:18,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:35:18,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369587146] [2020-11-07 06:35:18,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:35:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:18,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:35:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:18,631 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 06:35:18,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369587146] [2020-11-07 06:35:18,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:35:18,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 06:35:18,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32323374] [2020-11-07 06:35:18,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 06:35:18,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:35:18,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 06:35:18,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 06:35:18,637 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 6 states. [2020-11-07 06:35:18,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:35:18,871 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2020-11-07 06:35:18,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 06:35:18,871 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-11-07 06:35:18,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:35:18,873 INFO L225 Difference]: With dead ends: 39 [2020-11-07 06:35:18,873 INFO L226 Difference]: Without dead ends: 32 [2020-11-07 06:35:18,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-07 06:35:18,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-07 06:35:18,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-11-07 06:35:18,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-07 06:35:18,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-11-07 06:35:18,888 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 25 [2020-11-07 06:35:18,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:35:18,889 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-11-07 06:35:18,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 06:35:18,889 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-11-07 06:35:18,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-07 06:35:18,890 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:35:18,890 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] [2020-11-07 06:35:18,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 06:35:18,891 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:35:18,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:35:18,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1618316969, now seen corresponding path program 1 times [2020-11-07 06:35:18,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:35:18,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497282716] [2020-11-07 06:35:18,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:35:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:19,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:35:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:19,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:35:19,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497282716] [2020-11-07 06:35:19,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:35:19,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-11-07 06:35:19,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390479922] [2020-11-07 06:35:19,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-07 06:35:19,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:35:19,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-07 06:35:19,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-11-07 06:35:19,363 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 12 states. [2020-11-07 06:35:19,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:35:19,949 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2020-11-07 06:35:19,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-07 06:35:19,950 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-11-07 06:35:19,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:35:19,952 INFO L225 Difference]: With dead ends: 44 [2020-11-07 06:35:19,952 INFO L226 Difference]: Without dead ends: 37 [2020-11-07 06:35:19,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2020-11-07 06:35:19,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-07 06:35:19,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-11-07 06:35:19,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-07 06:35:19,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-11-07 06:35:19,966 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 30 [2020-11-07 06:35:19,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:35:19,966 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-11-07 06:35:19,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-07 06:35:19,967 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-11-07 06:35:19,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-07 06:35:19,968 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:35:19,968 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-07 06:35:19,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 06:35:19,968 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:35:19,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:35:19,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1530713300, now seen corresponding path program 2 times [2020-11-07 06:35:19,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:35:19,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093571590] [2020-11-07 06:35:19,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:35:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:20,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:35:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:20,329 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:35:20,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093571590] [2020-11-07 06:35:20,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:35:20,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-11-07 06:35:20,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356808861] [2020-11-07 06:35:20,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-07 06:35:20,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:35:20,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-07 06:35:20,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-11-07 06:35:20,333 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 15 states. [2020-11-07 06:35:21,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:35:21,293 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2020-11-07 06:35:21,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-07 06:35:21,294 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 35 [2020-11-07 06:35:21,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:35:21,295 INFO L225 Difference]: With dead ends: 49 [2020-11-07 06:35:21,295 INFO L226 Difference]: Without dead ends: 42 [2020-11-07 06:35:21,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=149, Invalid=721, Unknown=0, NotChecked=0, Total=870 [2020-11-07 06:35:21,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-07 06:35:21,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-11-07 06:35:21,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-07 06:35:21,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-11-07 06:35:21,309 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 35 [2020-11-07 06:35:21,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:35:21,309 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-11-07 06:35:21,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-07 06:35:21,309 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-11-07 06:35:21,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-07 06:35:21,311 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:35:21,311 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 06:35:21,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 06:35:21,311 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:35:21,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:35:21,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1049513591, now seen corresponding path program 3 times [2020-11-07 06:35:21,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:35:21,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451008030] [2020-11-07 06:35:21,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:35:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:21,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:35:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:21,731 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-07 06:35:21,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451008030] [2020-11-07 06:35:21,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:35:21,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-11-07 06:35:21,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747324044] [2020-11-07 06:35:21,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-07 06:35:21,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:35:21,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-07 06:35:21,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2020-11-07 06:35:21,734 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 17 states. [2020-11-07 06:35:22,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:35:22,866 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2020-11-07 06:35:22,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-07 06:35:22,867 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 40 [2020-11-07 06:35:22,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:35:22,868 INFO L225 Difference]: With dead ends: 41 [2020-11-07 06:35:22,868 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 06:35:22,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=148, Invalid=782, Unknown=0, NotChecked=0, Total=930 [2020-11-07 06:35:22,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 06:35:22,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 06:35:22,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 06:35:22,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 06:35:22,870 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2020-11-07 06:35:22,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:35:22,870 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 06:35:22,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-07 06:35:22,871 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 06:35:22,871 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 06:35:22,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 06:35:22,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 06:35:23,467 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 12) the Hoare annotation is: true [2020-11-07 06:35:23,467 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-11-07 06:35:23,467 INFO L269 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-11-07 06:35:23,468 INFO L269 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-11-07 06:35:23,468 INFO L269 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-11-07 06:35:23,468 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) the Hoare annotation is: true [2020-11-07 06:35:23,468 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 06:35:23,468 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 06:35:23,468 INFO L269 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2020-11-07 06:35:23,468 INFO L269 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-11-07 06:35:23,469 INFO L269 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-11-07 06:35:23,469 INFO L269 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-11-07 06:35:23,469 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-11-07 06:35:23,469 INFO L269 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-11-07 06:35:23,469 INFO L269 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-11-07 06:35:23,469 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 06:35:23,469 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 06:35:23,470 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 06:35:23,470 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 06:35:23,470 INFO L262 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (= main_~sn~0 0) [2020-11-07 06:35:23,470 INFO L269 CegarLoopResult]: At program point mainEXIT(lines 22 29) the Hoare annotation is: true [2020-11-07 06:35:23,470 INFO L269 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: true [2020-11-07 06:35:23,470 INFO L269 CegarLoopResult]: At program point L23-1(line 23) the Hoare annotation is: true [2020-11-07 06:35:23,470 INFO L262 CegarLoopResult]: At program point L25-3(lines 25 27) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= .cse0 main_~sn~0) (<= main_~sn~0 .cse0) (< main_~sn~0 (+ (* 2 main_~n~0) 1)))) [2020-11-07 06:35:23,471 INFO L269 CegarLoopResult]: At program point L23-2(line 23) the Hoare annotation is: true [2020-11-07 06:35:23,471 INFO L262 CegarLoopResult]: At program point L25-4(line 25) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0)) (.cse1 (* 2 |main_#t~post4|))) (and (<= .cse0 main_~sn~0) (<= main_~sn~0 .cse0) (<= .cse1 main_~sn~0) (< main_~sn~0 (+ (* 2 main_~n~0) 1)) (<= main_~sn~0 .cse1))) [2020-11-07 06:35:23,471 INFO L269 CegarLoopResult]: At program point L23-3(line 23) the Hoare annotation is: true [2020-11-07 06:35:23,471 INFO L262 CegarLoopResult]: At program point L25-5(line 25) the Hoare annotation is: (let ((.cse2 (+ main_~sn~0 2)) (.cse1 (* 2 main_~i~0)) (.cse0 (* 2 |main_#t~post4|))) (and (<= .cse0 main_~sn~0) (<= .cse1 .cse2) (<= .cse2 .cse1) (< main_~sn~0 (+ (* 2 main_~n~0) 1)) (<= main_~sn~0 .cse0))) [2020-11-07 06:35:23,471 INFO L262 CegarLoopResult]: At program point L25-6(lines 25 27) the Hoare annotation is: (or (let ((.cse1 (+ main_~sn~0 2)) (.cse0 (* 2 main_~i~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (< main_~sn~0 (+ (* 2 main_~n~0) 1)))) (and (= main_~sn~0 0) (= main_~i~0 1))) [2020-11-07 06:35:23,472 INFO L262 CegarLoopResult]: At program point L25-7(lines 25 27) the Hoare annotation is: (or (= main_~sn~0 0) (let ((.cse0 (* 2 main_~n~0))) (and (<= .cse0 main_~sn~0) (< main_~sn~0 (+ .cse0 1))))) [2020-11-07 06:35:23,472 INFO L269 CegarLoopResult]: At program point mainFINAL(lines 22 29) the Hoare annotation is: true [2020-11-07 06:35:23,472 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 22 29) the Hoare annotation is: true [2020-11-07 06:35:23,472 INFO L262 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0)) (.cse1 (+ main_~sn~0 2))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= .cse1 (* 2 main_~n~0)))) [2020-11-07 06:35:23,472 INFO L262 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: (= main_~sn~0 0) [2020-11-07 06:35:23,472 INFO L269 CegarLoopResult]: At program point L24-1(line 24) the Hoare annotation is: true [2020-11-07 06:35:23,473 INFO L262 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 06:35:23,473 INFO L262 CegarLoopResult]: At program point L16(lines 16 18) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-11-07 06:35:23,473 INFO L262 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 06:35:23,473 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 15 20) the Hoare annotation is: true [2020-11-07 06:35:23,473 INFO L269 CegarLoopResult]: At program point L16-2(lines 15 20) the Hoare annotation is: true [2020-11-07 06:35:23,473 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 15 20) the Hoare annotation is: true [2020-11-07 06:35:23,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:35:23 BoogieIcfgContainer [2020-11-07 06:35:23,493 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 06:35:23,496 INFO L168 Benchmark]: Toolchain (without parser) took 6480.40 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 136.7 MB in the beginning and 159.1 MB in the end (delta: -22.4 MB). Peak memory consumption was 106.7 MB. Max. memory is 8.0 GB. [2020-11-07 06:35:23,497 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory was 104.2 MB in the beginning and 104.2 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 06:35:23,498 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.98 ms. Allocated memory is still 160.4 MB. Free memory was 136.2 MB in the beginning and 126.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 06:35:23,499 INFO L168 Benchmark]: Boogie Preprocessor took 39.12 ms. Allocated memory is still 160.4 MB. Free memory was 126.5 MB in the beginning and 125.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 06:35:23,500 INFO L168 Benchmark]: RCFGBuilder took 495.88 ms. Allocated memory is still 160.4 MB. Free memory was 125.1 MB in the beginning and 142.3 MB in the end (delta: -17.2 MB). Peak memory consumption was 16.1 MB. Max. memory is 8.0 GB. [2020-11-07 06:35:23,501 INFO L168 Benchmark]: TraceAbstraction took 5623.80 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 141.8 MB in the beginning and 159.1 MB in the end (delta: -17.3 MB). Peak memory consumption was 110.6 MB. Max. memory is 8.0 GB. [2020-11-07 06:35:23,505 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory was 104.2 MB in the beginning and 104.2 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 304.98 ms. Allocated memory is still 160.4 MB. Free memory was 136.2 MB in the beginning and 126.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.12 ms. Allocated memory is still 160.4 MB. Free memory was 126.5 MB in the beginning and 125.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 495.88 ms. Allocated memory is still 160.4 MB. Free memory was 125.1 MB in the beginning and 142.3 MB in the end (delta: -17.2 MB). Peak memory consumption was 16.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5623.80 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 141.8 MB in the beginning and 159.1 MB in the end (delta: -17.3 MB). Peak memory consumption was 110.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 25]: Loop Invariant Derived loop invariant: ((2 * i <= sn + 2 && sn + 2 <= 2 * i) && sn < 2 * n + 1) || (sn == 0 && i == 1) - ProcedureContractResult [Line: 12]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 22]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 15]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.8s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 133 SDtfs, 135 SDslu, 402 SDs, 0 SdLazy, 542 SolverSat, 52 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 41 LocationsWithAnnotation, 89 PreInvPairs, 114 NumberOfFragments, 221 HoareAnnotationTreeSize, 89 FomulaSimplifications, 1137 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 41 FomulaSimplificationsInter, 759 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 155 NumberOfCodeBlocks, 155 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 150 ConstructedInterpolants, 0 QuantifiedInterpolants, 26885 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 2/26 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...