/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/brs2f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 01:55:57,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 01:55:57,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 01:55:57,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 01:55:57,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 01:55:57,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 01:55:57,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 01:55:57,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 01:55:57,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 01:55:57,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 01:55:57,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 01:55:57,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 01:55:57,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 01:55:57,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 01:55:57,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 01:55:57,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 01:55:57,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 01:55:57,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 01:55:57,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 01:55:57,619 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 01:55:57,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 01:55:57,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 01:55:57,621 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 01:55:57,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 01:55:57,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 01:55:57,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 01:55:57,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 01:55:57,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 01:55:57,626 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 01:55:57,649 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 01:55:57,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 01:55:57,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 01:55:57,654 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 01:55:57,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 01:55:57,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 01:55:57,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 01:55:57,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 01:55:57,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 01:55:57,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 01:55:57,657 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 01:55:57,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 01:55:57,657 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 01:55:57,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 01:55:57,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 01:55:57,658 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 01:55:57,658 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 01:55:57,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 01:55:57,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 01:55:57,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 01:55:57,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 01:55:57,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 01:55:57,660 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 01:55:58,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 01:55:58,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 01:55:58,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 01:55:58,093 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 01:55:58,094 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 01:55:58,097 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs2f.c [2020-11-07 01:55:58,183 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b32eba218/f098d3ccbbb340109032e634d12ff729/FLAG85c3dc4eb [2020-11-07 01:55:58,900 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 01:55:58,901 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs2f.c [2020-11-07 01:55:58,908 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b32eba218/f098d3ccbbb340109032e634d12ff729/FLAG85c3dc4eb [2020-11-07 01:55:59,272 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b32eba218/f098d3ccbbb340109032e634d12ff729 [2020-11-07 01:55:59,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 01:55:59,282 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 01:55:59,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 01:55:59,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 01:55:59,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 01:55:59,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:55:59" (1/1) ... [2020-11-07 01:55:59,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55ff2985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:59, skipping insertion in model container [2020-11-07 01:55:59,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:55:59" (1/1) ... [2020-11-07 01:55:59,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 01:55:59,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 01:55:59,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:55:59,519 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 01:55:59,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:55:59,567 INFO L208 MainTranslator]: Completed translation [2020-11-07 01:55:59,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:59 WrapperNode [2020-11-07 01:55:59,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 01:55:59,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 01:55:59,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 01:55:59,570 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 01:55:59,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:59" (1/1) ... [2020-11-07 01:55:59,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:59" (1/1) ... [2020-11-07 01:55:59,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:59" (1/1) ... [2020-11-07 01:55:59,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:59" (1/1) ... [2020-11-07 01:55:59,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:59" (1/1) ... [2020-11-07 01:55:59,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:59" (1/1) ... [2020-11-07 01:55:59,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:59" (1/1) ... [2020-11-07 01:55:59,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 01:55:59,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 01:55:59,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 01:55:59,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 01:55:59,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:59" (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 01:55:59,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 01:55:59,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 01:55:59,686 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 01:55:59,686 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 01:55:59,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 01:55:59,686 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 01:55:59,686 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 01:55:59,687 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 01:55:59,687 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 01:55:59,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 01:55:59,687 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 01:55:59,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 01:55:59,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 01:55:59,688 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 01:55:59,688 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 01:55:59,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 01:55:59,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 01:55:59,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 01:55:59,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 01:55:59,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 01:55:59,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 01:55:59,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 01:56:00,330 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 01:56:00,331 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-07 01:56:00,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:00 BoogieIcfgContainer [2020-11-07 01:56:00,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 01:56:00,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 01:56:00,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 01:56:00,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 01:56:00,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:55:59" (1/3) ... [2020-11-07 01:56:00,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64095b65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:00, skipping insertion in model container [2020-11-07 01:56:00,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:59" (2/3) ... [2020-11-07 01:56:00,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64095b65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:00, skipping insertion in model container [2020-11-07 01:56:00,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:00" (3/3) ... [2020-11-07 01:56:00,342 INFO L111 eAbstractionObserver]: Analyzing ICFG brs2f.c [2020-11-07 01:56:00,359 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 01:56:00,364 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 01:56:00,380 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 01:56:00,408 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 01:56:00,408 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 01:56:00,408 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 01:56:00,408 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 01:56:00,409 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 01:56:00,409 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 01:56:00,409 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 01:56:00,409 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 01:56:00,428 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-11-07 01:56:00,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-07 01:56:00,439 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:00,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:56:00,440 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:00,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:00,447 INFO L82 PathProgramCache]: Analyzing trace with hash -341341850, now seen corresponding path program 1 times [2020-11-07 01:56:00,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:00,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611846664] [2020-11-07 01:56:00,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:00,543 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:00,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:56:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:00,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-07 01:56:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:00,794 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 01:56:00,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611846664] [2020-11-07 01:56:00,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:56:00,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 01:56:00,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024187258] [2020-11-07 01:56:00,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 01:56:00,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:56:00,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 01:56:00,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 01:56:00,824 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 3 states. [2020-11-07 01:56:01,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:56:01,048 INFO L93 Difference]: Finished difference Result 111 states and 127 transitions. [2020-11-07 01:56:01,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 01:56:01,050 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-11-07 01:56:01,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:56:01,059 INFO L225 Difference]: With dead ends: 111 [2020-11-07 01:56:01,060 INFO L226 Difference]: Without dead ends: 53 [2020-11-07 01:56:01,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 01:56:01,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-07 01:56:01,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-11-07 01:56:01,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-07 01:56:01,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2020-11-07 01:56:01,122 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 36 [2020-11-07 01:56:01,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:56:01,123 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2020-11-07 01:56:01,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 01:56:01,123 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2020-11-07 01:56:01,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-07 01:56:01,125 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:01,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:56:01,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 01:56:01,126 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:01,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:01,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1000671319, now seen corresponding path program 1 times [2020-11-07 01:56:01,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:01,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046329824] [2020-11-07 01:56:01,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:01,131 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:01,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:56:01,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:01,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-07 01:56:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:01,349 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 01:56:01,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046329824] [2020-11-07 01:56:01,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:56:01,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 01:56:01,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145669219] [2020-11-07 01:56:01,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 01:56:01,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:56:01,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 01:56:01,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-07 01:56:01,355 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand 5 states. [2020-11-07 01:56:01,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:56:01,722 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2020-11-07 01:56:01,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 01:56:01,723 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-11-07 01:56:01,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:56:01,727 INFO L225 Difference]: With dead ends: 88 [2020-11-07 01:56:01,727 INFO L226 Difference]: Without dead ends: 62 [2020-11-07 01:56:01,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-07 01:56:01,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-07 01:56:01,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 57. [2020-11-07 01:56:01,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-07 01:56:01,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-11-07 01:56:01,760 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 36 [2020-11-07 01:56:01,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:56:01,761 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-11-07 01:56:01,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 01:56:01,762 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-11-07 01:56:01,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-07 01:56:01,765 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:01,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:56:01,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 01:56:01,766 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:01,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:01,767 INFO L82 PathProgramCache]: Analyzing trace with hash -546938271, now seen corresponding path program 1 times [2020-11-07 01:56:01,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:01,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099216272] [2020-11-07 01:56:01,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:01,943 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 01:56:01,945 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:01,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:02,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:56:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:02,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-07 01:56:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:02,168 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 01:56:02,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099216272] [2020-11-07 01:56:02,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:56:02,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 01:56:02,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047088689] [2020-11-07 01:56:02,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 01:56:02,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:56:02,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 01:56:02,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-11-07 01:56:02,172 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 8 states. [2020-11-07 01:56:02,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:56:02,500 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2020-11-07 01:56:02,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-07 01:56:02,501 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2020-11-07 01:56:02,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:56:02,502 INFO L225 Difference]: With dead ends: 73 [2020-11-07 01:56:02,503 INFO L226 Difference]: Without dead ends: 66 [2020-11-07 01:56:02,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-11-07 01:56:02,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-07 01:56:02,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 61. [2020-11-07 01:56:02,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-07 01:56:02,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2020-11-07 01:56:02,517 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 48 [2020-11-07 01:56:02,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:56:02,517 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2020-11-07 01:56:02,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 01:56:02,518 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2020-11-07 01:56:02,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-11-07 01:56:02,520 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:02,520 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:56:02,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 01:56:02,520 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:02,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:02,521 INFO L82 PathProgramCache]: Analyzing trace with hash -20855722, now seen corresponding path program 1 times [2020-11-07 01:56:02,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:02,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132673183] [2020-11-07 01:56:02,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:03,453 WARN L194 SmtUtils]: Spent 580.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-11-07 01:56:03,465 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 01:56:03,467 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:03,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:03,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:56:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:03,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-07 01:56:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:03,621 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 01:56:03,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132673183] [2020-11-07 01:56:03,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:56:03,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-07 01:56:03,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862564719] [2020-11-07 01:56:03,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 01:56:03,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:56:03,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 01:56:03,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-07 01:56:03,624 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand 10 states. [2020-11-07 01:56:03,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:56:03,956 INFO L93 Difference]: Finished difference Result 101 states and 107 transitions. [2020-11-07 01:56:03,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-07 01:56:03,957 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-11-07 01:56:03,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:56:03,961 INFO L225 Difference]: With dead ends: 101 [2020-11-07 01:56:03,961 INFO L226 Difference]: Without dead ends: 71 [2020-11-07 01:56:03,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-11-07 01:56:03,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-11-07 01:56:03,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2020-11-07 01:56:03,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-07 01:56:03,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2020-11-07 01:56:03,985 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 58 [2020-11-07 01:56:03,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:56:03,986 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2020-11-07 01:56:03,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 01:56:03,986 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2020-11-07 01:56:03,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-11-07 01:56:03,990 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:03,990 INFO L422 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:56:03,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 01:56:03,991 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:03,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:03,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1036949453, now seen corresponding path program 2 times [2020-11-07 01:56:03,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:03,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013182435] [2020-11-07 01:56:03,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:04,127 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 01:56:04,128 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:04,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:56:04,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:04,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-07 01:56:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:04,292 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 01:56:04,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013182435] [2020-11-07 01:56:04,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:56:04,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 01:56:04,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333353291] [2020-11-07 01:56:04,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 01:56:04,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:56:04,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 01:56:04,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 01:56:04,298 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand 6 states. [2020-11-07 01:56:04,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:56:04,533 INFO L93 Difference]: Finished difference Result 101 states and 108 transitions. [2020-11-07 01:56:04,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 01:56:04,534 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-11-07 01:56:04,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:56:04,536 INFO L225 Difference]: With dead ends: 101 [2020-11-07 01:56:04,536 INFO L226 Difference]: Without dead ends: 69 [2020-11-07 01:56:04,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-07 01:56:04,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-11-07 01:56:04,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2020-11-07 01:56:04,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-11-07 01:56:04,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2020-11-07 01:56:04,557 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 64 [2020-11-07 01:56:04,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:56:04,557 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2020-11-07 01:56:04,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 01:56:04,558 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2020-11-07 01:56:04,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-11-07 01:56:04,560 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:04,561 INFO L422 BasicCegarLoop]: trace histogram [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, 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 01:56:04,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 01:56:04,561 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:04,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:04,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1144764371, now seen corresponding path program 1 times [2020-11-07 01:56:04,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:04,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825627657] [2020-11-07 01:56:04,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:04,857 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 01:56:04,859 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:05,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:56:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:05,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-07 01:56:05,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:05,802 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 01:56:05,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825627657] [2020-11-07 01:56:05,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:56:05,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-11-07 01:56:05,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143702054] [2020-11-07 01:56:05,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-07 01:56:05,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:56:05,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-07 01:56:05,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2020-11-07 01:56:05,809 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand 25 states. [2020-11-07 01:56:08,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:56:08,832 INFO L93 Difference]: Finished difference Result 138 states and 149 transitions. [2020-11-07 01:56:08,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-07 01:56:08,833 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 64 [2020-11-07 01:56:08,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:56:08,839 INFO L225 Difference]: With dead ends: 138 [2020-11-07 01:56:08,839 INFO L226 Difference]: Without dead ends: 112 [2020-11-07 01:56:08,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=497, Invalid=2583, Unknown=0, NotChecked=0, Total=3080 [2020-11-07 01:56:08,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-11-07 01:56:08,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 100. [2020-11-07 01:56:08,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-11-07 01:56:08,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 106 transitions. [2020-11-07 01:56:08,899 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 106 transitions. Word has length 64 [2020-11-07 01:56:08,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:56:08,900 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 106 transitions. [2020-11-07 01:56:08,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-11-07 01:56:08,901 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 106 transitions. [2020-11-07 01:56:08,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-11-07 01:56:08,905 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:08,905 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:56:08,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 01:56:08,907 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:08,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:08,908 INFO L82 PathProgramCache]: Analyzing trace with hash -285303196, now seen corresponding path program 2 times [2020-11-07 01:56:08,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:08,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031776283] [2020-11-07 01:56:08,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:10,269 WARN L194 SmtUtils]: Spent 850.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-11-07 01:56:10,301 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 01:56:10,302 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:10,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:56:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:10,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-07 01:56:10,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:10,581 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 01:56:10,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031776283] [2020-11-07 01:56:10,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:56:10,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-11-07 01:56:10,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119043535] [2020-11-07 01:56:10,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-07 01:56:10,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:56:10,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-07 01:56:10,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-11-07 01:56:10,585 INFO L87 Difference]: Start difference. First operand 100 states and 106 transitions. Second operand 14 states. [2020-11-07 01:56:11,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:56:11,480 INFO L93 Difference]: Finished difference Result 139 states and 147 transitions. [2020-11-07 01:56:11,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-07 01:56:11,481 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 70 [2020-11-07 01:56:11,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:56:11,482 INFO L225 Difference]: With dead ends: 139 [2020-11-07 01:56:11,482 INFO L226 Difference]: Without dead ends: 117 [2020-11-07 01:56:11,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=772, Unknown=0, NotChecked=0, Total=930 [2020-11-07 01:56:11,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-11-07 01:56:11,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 77. [2020-11-07 01:56:11,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-07 01:56:11,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 80 transitions. [2020-11-07 01:56:11,513 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 80 transitions. Word has length 70 [2020-11-07 01:56:11,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:56:11,514 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 80 transitions. [2020-11-07 01:56:11,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-07 01:56:11,515 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 80 transitions. [2020-11-07 01:56:11,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-11-07 01:56:11,518 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:11,519 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:56:11,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 01:56:11,519 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:11,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:11,520 INFO L82 PathProgramCache]: Analyzing trace with hash 84138786, now seen corresponding path program 3 times [2020-11-07 01:56:11,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:11,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898214798] [2020-11-07 01:56:11,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:11,737 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 01:56:11,739 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:11,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:11,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:56:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:11,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-07 01:56:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:11,963 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 01:56:11,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898214798] [2020-11-07 01:56:11,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:56:11,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-11-07 01:56:11,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842827726] [2020-11-07 01:56:11,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-07 01:56:11,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:56:11,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-07 01:56:11,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-11-07 01:56:11,966 INFO L87 Difference]: Start difference. First operand 77 states and 80 transitions. Second operand 14 states. [2020-11-07 01:56:12,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:56:12,630 INFO L93 Difference]: Finished difference Result 136 states and 142 transitions. [2020-11-07 01:56:12,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-07 01:56:12,630 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 74 [2020-11-07 01:56:12,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:56:12,632 INFO L225 Difference]: With dead ends: 136 [2020-11-07 01:56:12,632 INFO L226 Difference]: Without dead ends: 86 [2020-11-07 01:56:12,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2020-11-07 01:56:12,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-11-07 01:56:12,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 83. [2020-11-07 01:56:12,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-11-07 01:56:12,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-11-07 01:56:12,668 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 74 [2020-11-07 01:56:12,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:56:12,669 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-11-07 01:56:12,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-07 01:56:12,669 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-11-07 01:56:12,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-07 01:56:12,670 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:12,670 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:56:12,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-07 01:56:12,671 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:12,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:12,671 INFO L82 PathProgramCache]: Analyzing trace with hash -923985767, now seen corresponding path program 4 times [2020-11-07 01:56:12,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:12,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796602334] [2020-11-07 01:56:12,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:12,968 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 01:56:12,970 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 01:56:13,039 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 01:56:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 01:56:13,075 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 01:56:13,113 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 01:56:13,113 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 01:56:13,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-07 01:56:13,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:56:13 BoogieIcfgContainer [2020-11-07 01:56:13,134 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 01:56:13,135 INFO L168 Benchmark]: Toolchain (without parser) took 13856.98 ms. Allocated memory was 153.1 MB in the beginning and 223.3 MB in the end (delta: 70.3 MB). Free memory was 130.3 MB in the beginning and 154.2 MB in the end (delta: -24.0 MB). Peak memory consumption was 46.7 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:13,136 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 153.1 MB. Free memory is still 127.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 01:56:13,137 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.16 ms. Allocated memory is still 153.1 MB. Free memory was 129.6 MB in the beginning and 119.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:13,138 INFO L168 Benchmark]: Boogie Preprocessor took 40.75 ms. Allocated memory is still 153.1 MB. Free memory was 119.8 MB in the beginning and 118.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:13,139 INFO L168 Benchmark]: RCFGBuilder took 722.10 ms. Allocated memory is still 153.1 MB. Free memory was 118.1 MB in the beginning and 132.2 MB in the end (delta: -14.1 MB). Peak memory consumption was 18.4 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:13,139 INFO L168 Benchmark]: TraceAbstraction took 12799.10 ms. Allocated memory was 153.1 MB in the beginning and 223.3 MB in the end (delta: 70.3 MB). Free memory was 131.7 MB in the beginning and 154.2 MB in the end (delta: -22.5 MB). Peak memory consumption was 47.2 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:13,143 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 153.1 MB. Free memory is still 127.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 282.16 ms. Allocated memory is still 153.1 MB. Free memory was 129.6 MB in the beginning and 119.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.75 ms. Allocated memory is still 153.1 MB. Free memory was 119.8 MB in the beginning and 118.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 722.10 ms. Allocated memory is still 153.1 MB. Free memory was 118.1 MB in the beginning and 132.2 MB in the end (delta: -14.1 MB). Peak memory consumption was 18.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 12799.10 ms. Allocated memory was 153.1 MB in the beginning and 223.3 MB in the end (delta: 70.3 MB). Free memory was 131.7 MB in the beginning and 154.2 MB in the end (delta: -22.5 MB). Peak memory consumption was 47.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 [L31] COND TRUE i