/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/loop-acceleration/underapprox_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 02:00:41,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 02:00:41,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 02:00:41,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 02:00:41,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 02:00:41,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 02:00:41,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 02:00:41,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 02:00:41,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 02:00:41,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 02:00:41,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 02:00:42,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 02:00:42,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 02:00:42,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 02:00:42,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 02:00:42,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 02:00:42,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 02:00:42,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 02:00:42,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 02:00:42,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 02:00:42,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 02:00:42,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 02:00:42,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 02:00:42,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 02:00:42,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 02:00:42,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 02:00:42,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 02:00:42,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 02:00:42,061 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 02:00:42,062 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 02:00:42,062 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 02:00:42,063 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 02:00:42,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 02:00:42,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 02:00:42,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 02:00:42,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 02:00:42,067 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 02:00:42,091 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 02:00:42,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 02:00:42,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 02:00:42,096 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 02:00:42,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 02:00:42,097 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 02:00:42,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 02:00:42,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 02:00:42,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 02:00:42,098 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 02:00:42,099 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 02:00:42,099 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 02:00:42,099 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 02:00:42,100 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 02:00:42,100 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 02:00:42,100 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 02:00:42,101 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 02:00:42,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 02:00:42,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 02:00:42,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 02:00:42,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 02:00:42,102 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 02:00:42,102 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 02:00:42,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 02:00:42,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 02:00:42,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 02:00:42,500 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 02:00:42,500 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 02:00:42,501 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/underapprox_2-2.c [2020-11-07 02:00:42,594 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/637201b8d/a69d068d37824eafaa8c302e502f07a4/FLAG9778fae59 [2020-11-07 02:00:43,202 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 02:00:43,203 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/underapprox_2-2.c [2020-11-07 02:00:43,210 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/637201b8d/a69d068d37824eafaa8c302e502f07a4/FLAG9778fae59 [2020-11-07 02:00:43,579 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/637201b8d/a69d068d37824eafaa8c302e502f07a4 [2020-11-07 02:00:43,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 02:00:43,590 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 02:00:43,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 02:00:43,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 02:00:43,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 02:00:43,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:00:43" (1/1) ... [2020-11-07 02:00:43,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30a8f9fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:43, skipping insertion in model container [2020-11-07 02:00:43,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:00:43" (1/1) ... [2020-11-07 02:00:43,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 02:00:43,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 02:00:43,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:00:43,802 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 02:00:43,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:00:43,839 INFO L208 MainTranslator]: Completed translation [2020-11-07 02:00:43,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:43 WrapperNode [2020-11-07 02:00:43,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 02:00:43,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 02:00:43,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 02:00:43,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 02:00:43,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:43" (1/1) ... [2020-11-07 02:00:43,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:43" (1/1) ... [2020-11-07 02:00:43,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:43" (1/1) ... [2020-11-07 02:00:43,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:43" (1/1) ... [2020-11-07 02:00:43,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:43" (1/1) ... [2020-11-07 02:00:43,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:43" (1/1) ... [2020-11-07 02:00:43,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:43" (1/1) ... [2020-11-07 02:00:43,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 02:00:43,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 02:00:43,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 02:00:43,877 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 02:00:43,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 02:00:43,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 02:00:43,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 02:00:43,962 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 02:00:43,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 02:00:43,963 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 02:00:43,963 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 02:00:43,963 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 02:00:43,964 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 02:00:43,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 02:00:43,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 02:00:43,964 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 02:00:43,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 02:00:43,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 02:00:43,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 02:00:43,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 02:00:43,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 02:00:43,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 02:00:44,343 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 02:00:44,344 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 02:00:44,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:00:44 BoogieIcfgContainer [2020-11-07 02:00:44,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 02:00:44,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 02:00:44,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 02:00:44,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 02:00:44,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:00:43" (1/3) ... [2020-11-07 02:00:44,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602ecab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:00:44, skipping insertion in model container [2020-11-07 02:00:44,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:43" (2/3) ... [2020-11-07 02:00:44,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602ecab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:00:44, skipping insertion in model container [2020-11-07 02:00:44,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:00:44" (3/3) ... [2020-11-07 02:00:44,361 INFO L111 eAbstractionObserver]: Analyzing ICFG underapprox_2-2.c [2020-11-07 02:00:44,376 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 02:00:44,380 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 02:00:44,391 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 02:00:44,425 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 02:00:44,425 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 02:00:44,426 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 02:00:44,426 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 02:00:44,426 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 02:00:44,426 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 02:00:44,426 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 02:00:44,427 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 02:00:44,465 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-11-07 02:00:44,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-07 02:00:44,476 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:00:44,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:00:44,478 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:00:44,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:00:44,486 INFO L82 PathProgramCache]: Analyzing trace with hash -772490682, now seen corresponding path program 1 times [2020-11-07 02:00:44,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:00:44,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676001281] [2020-11-07 02:00:44,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:00:44,581 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:00:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:00:44,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:00:44,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:00:44,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:00:44,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676001281] [2020-11-07 02:00:44,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:00:44,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 02:00:44,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119746716] [2020-11-07 02:00:44,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 02:00:44,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:00:44,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 02:00:44,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 02:00:44,842 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2020-11-07 02:00:44,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:00:44,994 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2020-11-07 02:00:44,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 02:00:44,997 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-11-07 02:00:44,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:00:45,005 INFO L225 Difference]: With dead ends: 49 [2020-11-07 02:00:45,005 INFO L226 Difference]: Without dead ends: 28 [2020-11-07 02:00:45,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 02:00:45,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-07 02:00:45,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-11-07 02:00:45,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-07 02:00:45,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-11-07 02:00:45,054 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 20 [2020-11-07 02:00:45,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:00:45,055 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-11-07 02:00:45,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 02:00:45,055 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-11-07 02:00:45,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-07 02:00:45,056 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:00:45,056 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 02:00:45,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 02:00:45,057 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:00:45,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:00:45,058 INFO L82 PathProgramCache]: Analyzing trace with hash 515607529, now seen corresponding path program 1 times [2020-11-07 02:00:45,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:00:45,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631191446] [2020-11-07 02:00:45,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:00:45,249 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:00:45,251 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:00:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:00:45,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:00:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:00:45,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:00:45,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631191446] [2020-11-07 02:00:45,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:00:45,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 02:00:45,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345264046] [2020-11-07 02:00:45,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 02:00:45,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:00:45,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 02:00:45,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-07 02:00:45,443 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 6 states. [2020-11-07 02:00:45,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:00:45,701 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2020-11-07 02:00:45,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 02:00:45,702 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-11-07 02:00:45,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:00:45,703 INFO L225 Difference]: With dead ends: 39 [2020-11-07 02:00:45,703 INFO L226 Difference]: Without dead ends: 33 [2020-11-07 02:00:45,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-11-07 02:00:45,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-07 02:00:45,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-11-07 02:00:45,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-07 02:00:45,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-11-07 02:00:45,718 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 25 [2020-11-07 02:00:45,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:00:45,719 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-11-07 02:00:45,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 02:00:45,719 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-11-07 02:00:45,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-07 02:00:45,720 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:00:45,720 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] [2020-11-07 02:00:45,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 02:00:45,721 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:00:45,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:00:45,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1732949978, now seen corresponding path program 2 times [2020-11-07 02:00:45,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:00:45,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039755354] [2020-11-07 02:00:45,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:00:45,977 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-11-07 02:00:45,980 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:00:45,982 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:00:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:00:46,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:00:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:00:46,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:00:46,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039755354] [2020-11-07 02:00:46,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:00:46,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 02:00:46,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005957860] [2020-11-07 02:00:46,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 02:00:46,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:00:46,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 02:00:46,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-11-07 02:00:46,166 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 8 states. [2020-11-07 02:00:46,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:00:46,576 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2020-11-07 02:00:46,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 02:00:46,577 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-11-07 02:00:46,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:00:46,579 INFO L225 Difference]: With dead ends: 44 [2020-11-07 02:00:46,579 INFO L226 Difference]: Without dead ends: 38 [2020-11-07 02:00:46,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-11-07 02:00:46,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-07 02:00:46,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-11-07 02:00:46,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-07 02:00:46,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-11-07 02:00:46,597 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 30 [2020-11-07 02:00:46,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:00:46,597 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-11-07 02:00:46,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 02:00:46,598 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-11-07 02:00:46,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-07 02:00:46,599 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:00:46,599 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] [2020-11-07 02:00:46,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 02:00:46,599 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:00:46,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:00:46,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1450661367, now seen corresponding path program 3 times [2020-11-07 02:00:46,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:00:46,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336252567] [2020-11-07 02:00:46,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:00:46,839 WARN L194 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-11-07 02:00:46,972 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:00:46,975 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:00:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:00:47,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:00:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:00:47,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:00:47,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336252567] [2020-11-07 02:00:47,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:00:47,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-07 02:00:47,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349963304] [2020-11-07 02:00:47,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 02:00:47,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:00:47,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 02:00:47,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-11-07 02:00:47,228 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 10 states. [2020-11-07 02:00:47,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:00:47,850 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2020-11-07 02:00:47,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-07 02:00:47,852 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2020-11-07 02:00:47,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:00:47,854 INFO L225 Difference]: With dead ends: 49 [2020-11-07 02:00:47,854 INFO L226 Difference]: Without dead ends: 43 [2020-11-07 02:00:47,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2020-11-07 02:00:47,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-07 02:00:47,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2020-11-07 02:00:47,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-07 02:00:47,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-11-07 02:00:47,867 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 35 [2020-11-07 02:00:47,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:00:47,868 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-11-07 02:00:47,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 02:00:47,868 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-11-07 02:00:47,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-07 02:00:47,869 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:00:47,870 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:00:47,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 02:00:47,870 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:00:47,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:00:47,871 INFO L82 PathProgramCache]: Analyzing trace with hash 772144646, now seen corresponding path program 4 times [2020-11-07 02:00:47,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:00:47,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442286722] [2020-11-07 02:00:47,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:00:48,001 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-11-07 02:00:48,131 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-11-07 02:00:48,133 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:00:48,135 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:00:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:00:48,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:00:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:00:48,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:00:48,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442286722] [2020-11-07 02:00:48,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:00:48,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-07 02:00:48,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787185104] [2020-11-07 02:00:48,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-07 02:00:48,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:00:48,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-07 02:00:48,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-11-07 02:00:48,434 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 12 states. [2020-11-07 02:00:49,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:00:49,277 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-11-07 02:00:49,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-07 02:00:49,277 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-11-07 02:00:49,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:00:49,279 INFO L225 Difference]: With dead ends: 54 [2020-11-07 02:00:49,279 INFO L226 Difference]: Without dead ends: 48 [2020-11-07 02:00:49,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2020-11-07 02:00:49,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-07 02:00:49,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-11-07 02:00:49,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-07 02:00:49,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2020-11-07 02:00:49,297 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 40 [2020-11-07 02:00:49,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:00:49,297 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2020-11-07 02:00:49,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-07 02:00:49,297 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2020-11-07 02:00:49,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-07 02:00:49,299 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:00:49,299 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:00:49,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 02:00:49,299 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:00:49,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:00:49,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1100914729, now seen corresponding path program 5 times [2020-11-07 02:00:49,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:00:49,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836888537] [2020-11-07 02:00:49,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:00:49,535 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:00:49,537 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:00:49,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:00:49,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:00:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:00:49,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:00:49,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836888537] [2020-11-07 02:00:49,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:00:49,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-11-07 02:00:49,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101602198] [2020-11-07 02:00:49,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-07 02:00:49,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:00:49,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-07 02:00:49,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-11-07 02:00:49,846 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 14 states. [2020-11-07 02:00:50,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:00:50,884 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2020-11-07 02:00:50,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-07 02:00:50,885 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 45 [2020-11-07 02:00:50,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:00:50,886 INFO L225 Difference]: With dead ends: 59 [2020-11-07 02:00:50,886 INFO L226 Difference]: Without dead ends: 53 [2020-11-07 02:00:50,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=143, Invalid=727, Unknown=0, NotChecked=0, Total=870 [2020-11-07 02:00:50,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-07 02:00:50,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2020-11-07 02:00:50,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-07 02:00:50,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2020-11-07 02:00:50,917 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 45 [2020-11-07 02:00:50,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:00:50,922 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2020-11-07 02:00:50,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-07 02:00:50,923 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2020-11-07 02:00:50,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-07 02:00:50,924 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:00:50,924 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:00:50,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 02:00:50,925 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:00:50,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:00:50,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1507122150, now seen corresponding path program 6 times [2020-11-07 02:00:50,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:00:50,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524637571] [2020-11-07 02:00:50,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:00:51,160 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:00:51,162 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:00:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:00:51,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:00:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:00:51,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:00:51,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524637571] [2020-11-07 02:00:51,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:00:51,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-11-07 02:00:51,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978401937] [2020-11-07 02:00:51,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-07 02:00:51,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:00:51,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-07 02:00:51,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2020-11-07 02:00:51,701 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 19 states. [2020-11-07 02:00:53,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:00:53,163 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-11-07 02:00:53,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-07 02:00:53,163 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 50 [2020-11-07 02:00:53,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:00:53,164 INFO L225 Difference]: With dead ends: 59 [2020-11-07 02:00:53,164 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 02:00:53,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=171, Invalid=1389, Unknown=0, NotChecked=0, Total=1560 [2020-11-07 02:00:53,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 02:00:53,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 02:00:53,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 02:00:53,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 02:00:53,169 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2020-11-07 02:00:53,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:00:53,169 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 02:00:53,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-07 02:00:53,169 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 02:00:53,169 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 02:00:53,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 02:00:53,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 02:00:53,619 WARN L194 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 23 [2020-11-07 02:00:53,858 WARN L194 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 33 [2020-11-07 02:00:54,165 WARN L194 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 45 [2020-11-07 02:00:54,373 WARN L194 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37 [2020-11-07 02:00:54,534 WARN L194 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 24 [2020-11-07 02:00:54,578 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-11-07 02:00:54,578 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-11-07 02:00:54,579 INFO L269 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-11-07 02:00:54,579 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-11-07 02:00:54,579 INFO L269 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-11-07 02:00:54,579 INFO L269 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-11-07 02:00:54,579 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 02:00:54,579 INFO L269 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-11-07 02:00:54,580 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 02:00:54,580 INFO L269 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2020-11-07 02:00:54,580 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-11-07 02:00:54,580 INFO L269 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-11-07 02:00:54,580 INFO L269 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-11-07 02:00:54,580 INFO L269 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-11-07 02:00:54,580 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 02:00:54,581 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 02:00:54,581 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 02:00:54,581 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 02:00:54,581 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 12 22) the Hoare annotation is: true [2020-11-07 02:00:54,581 INFO L269 CegarLoopResult]: At program point mainEXIT(lines 12 22) the Hoare annotation is: true [2020-11-07 02:00:54,581 INFO L262 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (or (and (<= 4 main_~x~0) (<= main_~x~0 4)) (and (<= 2 main_~x~0) (<= main_~x~0 2)) (and (<= 1 main_~x~0) (<= main_~x~0 1)) (let ((.cse1 (div main_~x~0 4294967296))) (let ((.cse0 (* 4294967296 .cse1))) (and (< (+ .cse0 5) main_~x~0) (<= main_~x~0 (+ .cse0 6)) (<= 0 .cse1)))) (and (<= main_~x~0 3) (<= 3 main_~x~0)) (and (<= main_~x~0 5) (<= 5 main_~x~0))) [2020-11-07 02:00:54,582 INFO L262 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (or (and (<= 4 main_~x~0) (<= main_~x~0 4)) (and (<= 2 main_~x~0) (<= main_~x~0 2)) (and (<= 1 main_~x~0) (<= main_~x~0 1)) (and (<= main_~x~0 3) (<= 3 main_~x~0)) (and (<= main_~x~0 5) (<= 5 main_~x~0)) (= main_~x~0 0)) [2020-11-07 02:00:54,582 INFO L262 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: (or (and (<= |main_#t~post7| 1) (<= 1 main_~x~0) (<= 1 |main_#t~post7|) (<= main_~x~0 1)) (and (<= main_~x~0 5) (<= |main_#t~post7| 5) (<= 5 main_~x~0) (<= 5 |main_#t~post7|)) (and (<= 2 main_~x~0) (<= main_~x~0 2) (<= 2 |main_#t~post7|) (<= |main_#t~post7| 2)) (and (<= |main_#t~post7| 3) (<= main_~x~0 3) (<= 3 |main_#t~post7|) (<= 3 main_~x~0)) (and (<= 4 |main_#t~post7|) (<= 4 main_~x~0) (<= |main_#t~post7| 4) (<= main_~x~0 4)) (and (= |main_#t~post7| 0) (= main_~x~0 0))) [2020-11-07 02:00:54,582 INFO L262 CegarLoopResult]: At program point L17-2(line 17) the Hoare annotation is: (or (and (<= |main_#t~post7| 1) (<= 2 main_~x~0) (<= 1 |main_#t~post7|) (<= main_~x~0 2)) (and (<= main_~x~0 3) (<= 3 main_~x~0) (<= 2 |main_#t~post7|) (<= |main_#t~post7| 2)) (and (<= 1 main_~x~0) (= |main_#t~post7| 0) (<= main_~x~0 1)) (and (<= 4 main_~x~0) (<= |main_#t~post7| 3) (<= 3 |main_#t~post7|) (<= main_~x~0 4)) (let ((.cse1 (div main_~x~0 4294967296))) (let ((.cse0 (* 4294967296 .cse1))) (and (< (+ .cse0 5) main_~x~0) (<= |main_#t~post7| 5) (<= main_~x~0 (+ .cse0 6)) (<= 5 |main_#t~post7|) (<= 0 .cse1)))) (and (<= 4 |main_#t~post7|) (<= |main_#t~post7| 4) (<= main_~x~0 5) (<= 5 main_~x~0))) [2020-11-07 02:00:54,582 INFO L262 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (= main_~x~0 0) [2020-11-07 02:00:54,582 INFO L262 CegarLoopResult]: At program point L16-2(lines 16 19) the Hoare annotation is: (let ((.cse1 (div main_~x~0 4294967296))) (or (let ((.cse0 (* 4294967296 .cse1))) (and (< (+ .cse0 5) main_~x~0) (<= main_~x~0 (+ .cse0 6)) (<= 0 .cse1))) (and (<= main_~x~0 5) (<= 5 main_~x~0)) (and (< 0 (+ .cse1 1)) (<= main_~x~0 4)))) [2020-11-07 02:00:54,583 INFO L262 CegarLoopResult]: At program point L16-3(lines 16 19) the Hoare annotation is: (let ((.cse1 (div main_~x~0 4294967296))) (let ((.cse0 (* 4294967296 .cse1))) (and (< (+ .cse0 5) main_~x~0) (<= main_~x~0 (+ .cse0 6)) (<= 0 .cse1)))) [2020-11-07 02:00:54,583 INFO L269 CegarLoopResult]: At program point mainFINAL(lines 12 22) the Hoare annotation is: true [2020-11-07 02:00:54,583 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2020-11-07 02:00:54,583 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: true [2020-11-07 02:00:54,583 INFO L262 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 02:00:54,583 INFO L262 CegarLoopResult]: At program point L6(lines 6 8) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-11-07 02:00:54,583 INFO L262 CegarLoopResult]: At program point L7-1(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 02:00:54,584 INFO L269 CegarLoopResult]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2020-11-07 02:00:54,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:00:54 BoogieIcfgContainer [2020-11-07 02:00:54,610 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 02:00:54,612 INFO L168 Benchmark]: Toolchain (without parser) took 11027.00 ms. Allocated memory was 155.2 MB in the beginning and 232.8 MB in the end (delta: 77.6 MB). Free memory was 131.9 MB in the beginning and 216.2 MB in the end (delta: -84.3 MB). Peak memory consumption was 130.7 MB. Max. memory is 8.0 GB. [2020-11-07 02:00:54,612 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 155.2 MB. Free memory was 128.2 MB in the beginning and 128.1 MB in the end (delta: 102.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 02:00:54,613 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.31 ms. Allocated memory is still 155.2 MB. Free memory was 131.2 MB in the beginning and 121.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 02:00:54,614 INFO L168 Benchmark]: Boogie Preprocessor took 34.24 ms. Allocated memory is still 155.2 MB. Free memory was 121.6 MB in the beginning and 120.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 02:00:54,615 INFO L168 Benchmark]: RCFGBuilder took 470.49 ms. Allocated memory is still 155.2 MB. Free memory was 120.2 MB in the beginning and 107.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-11-07 02:00:54,616 INFO L168 Benchmark]: TraceAbstraction took 10259.33 ms. Allocated memory was 155.2 MB in the beginning and 232.8 MB in the end (delta: 77.6 MB). Free memory was 107.2 MB in the beginning and 216.2 MB in the end (delta: -109.0 MB). Peak memory consumption was 105.5 MB. Max. memory is 8.0 GB. [2020-11-07 02:00:54,619 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 155.2 MB. Free memory was 128.2 MB in the beginning and 128.1 MB in the end (delta: 102.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 245.31 ms. Allocated memory is still 155.2 MB. Free memory was 131.2 MB in the beginning and 121.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.24 ms. Allocated memory is still 155.2 MB. Free memory was 121.6 MB in the beginning and 120.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 470.49 ms. Allocated memory is still 155.2 MB. Free memory was 120.2 MB in the beginning and 107.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 10259.33 ms. Allocated memory was 155.2 MB in the beginning and 232.8 MB in the end (delta: 77.6 MB). Free memory was 107.2 MB in the beginning and 216.2 MB in the end (delta: -109.0 MB). Peak memory consumption was 105.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (((4294967296 * (x / 4294967296) + 5 < x && x <= 4294967296 * (x / 4294967296) + 6) && 0 <= x / 4294967296) || (x <= 5 && 5 <= x)) || (0 < x / 4294967296 + 1 && x <= 4) - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 12]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 5]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.7s, OverallIterations: 7, TraceHistogramMax: 6, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 181 SDtfs, 243 SDslu, 666 SDs, 0 SdLazy, 1230 SolverSat, 85 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 152 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 12 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 34 LocationsWithAnnotation, 100 PreInvPairs, 150 NumberOfFragments, 403 HoareAnnotationTreeSize, 100 FomulaSimplifications, 16638 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 34 FomulaSimplificationsInter, 1349 FormulaSimplificationTreeSizeReductionInter, 1.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...