/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/n.c11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 06:35:07,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 06:35:07,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 06:35:07,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 06:35:07,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 06:35:07,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 06:35:07,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 06:35:07,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 06:35:07,722 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 06:35:07,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 06:35:07,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 06:35:07,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 06:35:07,727 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 06:35:07,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 06:35:07,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 06:35:07,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 06:35:07,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 06:35:07,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 06:35:07,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 06:35:07,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 06:35:07,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 06:35:07,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 06:35:07,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 06:35:07,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 06:35:07,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 06:35:07,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 06:35:07,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 06:35:07,799 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 06:35:07,801 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 06:35:07,829 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 06:35:07,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 06:35:07,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 06:35:07,834 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 06:35:07,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 06:35:07,835 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 06:35:07,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 06:35:07,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 06:35:07,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 06:35:07,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 06:35:07,837 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 06:35:07,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 06:35:07,838 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 06:35:07,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 06:35:07,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 06:35:07,839 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 06:35:07,839 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 06:35:07,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 06:35:07,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 06:35:07,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 06:35:07,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 06:35:07,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 06:35:07,841 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 06:35:08,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 06:35:08,264 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 06:35:08,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 06:35:08,270 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 06:35:08,270 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 06:35:08,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/n.c11.c [2020-11-07 06:35:08,356 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0effcc6c2/d4cb10143d1f444ab81061ff5bbbf558/FLAG571fd058d [2020-11-07 06:35:09,058 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 06:35:09,059 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/n.c11.c [2020-11-07 06:35:09,067 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0effcc6c2/d4cb10143d1f444ab81061ff5bbbf558/FLAG571fd058d [2020-11-07 06:35:09,430 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0effcc6c2/d4cb10143d1f444ab81061ff5bbbf558 [2020-11-07 06:35:09,435 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 06:35:09,445 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 06:35:09,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 06:35:09,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 06:35:09,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 06:35:09,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:35:09" (1/1) ... [2020-11-07 06:35:09,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25e8cf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:09, skipping insertion in model container [2020-11-07 06:35:09,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:35:09" (1/1) ... [2020-11-07 06:35:09,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 06:35:09,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 06:35:09,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:35:09,655 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 06:35:09,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:35:09,692 INFO L208 MainTranslator]: Completed translation [2020-11-07 06:35:09,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:09 WrapperNode [2020-11-07 06:35:09,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 06:35:09,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 06:35:09,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 06:35:09,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 06:35:09,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:09" (1/1) ... [2020-11-07 06:35:09,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:09" (1/1) ... [2020-11-07 06:35:09,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:09" (1/1) ... [2020-11-07 06:35:09,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:09" (1/1) ... [2020-11-07 06:35:09,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:09" (1/1) ... [2020-11-07 06:35:09,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:09" (1/1) ... [2020-11-07 06:35:09,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:09" (1/1) ... [2020-11-07 06:35:09,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 06:35:09,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 06:35:09,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 06:35:09,735 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 06:35:09,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 06:35:09,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 06:35:09,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 06:35:09,821 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 06:35:09,821 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 06:35:09,821 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 06:35:09,822 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 06:35:09,822 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 06:35:09,822 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 06:35:09,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 06:35:09,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 06:35:09,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-11-07 06:35:09,823 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 06:35:09,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 06:35:09,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 06:35:09,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 06:35:09,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 06:35:09,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 06:35:09,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 06:35:10,227 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 06:35:10,228 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 06:35:10,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:35:10 BoogieIcfgContainer [2020-11-07 06:35:10,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 06:35:10,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 06:35:10,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 06:35:10,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 06:35:10,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:35:09" (1/3) ... [2020-11-07 06:35:10,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b94302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:35:10, skipping insertion in model container [2020-11-07 06:35:10,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:09" (2/3) ... [2020-11-07 06:35:10,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b94302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:35:10, skipping insertion in model container [2020-11-07 06:35:10,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:35:10" (3/3) ... [2020-11-07 06:35:10,250 INFO L111 eAbstractionObserver]: Analyzing ICFG n.c11.c [2020-11-07 06:35:10,269 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 06:35:10,273 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 06:35:10,287 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 06:35:10,331 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 06:35:10,331 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 06:35:10,332 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 06:35:10,332 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 06:35:10,332 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 06:35:10,332 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 06:35:10,332 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 06:35:10,332 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 06:35:10,354 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-11-07 06:35:10,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-07 06:35:10,367 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:35:10,369 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] [2020-11-07 06:35:10,370 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:35:10,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:35:10,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1042171063, now seen corresponding path program 1 times [2020-11-07 06:35:10,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:35:10,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677416974] [2020-11-07 06:35:10,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:35:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:10,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:35:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:10,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:35:10,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677416974] [2020-11-07 06:35:10,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:35:10,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 06:35:10,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264576159] [2020-11-07 06:35:10,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 06:35:10,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:35:10,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 06:35:10,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 06:35:10,783 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-11-07 06:35:10,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:35:10,905 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-11-07 06:35:10,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 06:35:10,908 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-11-07 06:35:10,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:35:10,917 INFO L225 Difference]: With dead ends: 53 [2020-11-07 06:35:10,918 INFO L226 Difference]: Without dead ends: 30 [2020-11-07 06:35:10,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 06:35:10,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-07 06:35:10,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-07 06:35:10,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-07 06:35:10,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-11-07 06:35:10,975 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 21 [2020-11-07 06:35:10,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:35:10,975 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-11-07 06:35:10,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 06:35:10,976 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-11-07 06:35:10,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-07 06:35:10,977 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:35:10,977 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:35:10,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 06:35:10,978 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:35:10,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:35:10,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1209753595, now seen corresponding path program 1 times [2020-11-07 06:35:10,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:35:10,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141683486] [2020-11-07 06:35:10,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:35:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:11,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:35:11,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:11,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:35:11,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141683486] [2020-11-07 06:35:11,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:35:11,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 06:35:11,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888232711] [2020-11-07 06:35:11,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 06:35:11,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:35:11,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 06:35:11,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 06:35:11,204 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 6 states. [2020-11-07 06:35:11,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:35:11,455 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2020-11-07 06:35:11,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 06:35:11,455 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-11-07 06:35:11,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:35:11,457 INFO L225 Difference]: With dead ends: 55 [2020-11-07 06:35:11,457 INFO L226 Difference]: Without dead ends: 36 [2020-11-07 06:35:11,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-07 06:35:11,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-07 06:35:11,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2020-11-07 06:35:11,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-07 06:35:11,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-11-07 06:35:11,473 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 22 [2020-11-07 06:35:11,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:35:11,473 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-11-07 06:35:11,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 06:35:11,474 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-11-07 06:35:11,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-07 06:35:11,476 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:35:11,476 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] [2020-11-07 06:35:11,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 06:35:11,477 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:35:11,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:35:11,478 INFO L82 PathProgramCache]: Analyzing trace with hash -278234852, now seen corresponding path program 1 times [2020-11-07 06:35:11,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:35:11,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630595485] [2020-11-07 06:35:11,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:35:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:11,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:35:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:11,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:35:11,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630595485] [2020-11-07 06:35:11,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:35:11,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-07 06:35:11,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827865703] [2020-11-07 06:35:11,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 06:35:11,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:35:11,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 06:35:11,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-07 06:35:11,712 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 8 states. [2020-11-07 06:35:12,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:35:12,069 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2020-11-07 06:35:12,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-07 06:35:12,070 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-11-07 06:35:12,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:35:12,071 INFO L225 Difference]: With dead ends: 62 [2020-11-07 06:35:12,071 INFO L226 Difference]: Without dead ends: 43 [2020-11-07 06:35:12,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-11-07 06:35:12,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-07 06:35:12,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2020-11-07 06:35:12,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-07 06:35:12,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-11-07 06:35:12,100 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 29 [2020-11-07 06:35:12,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:35:12,100 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-11-07 06:35:12,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 06:35:12,101 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-11-07 06:35:12,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-07 06:35:12,102 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:35:12,102 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-07 06:35:12,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 06:35:12,103 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:35:12,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:35:12,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1552517157, now seen corresponding path program 2 times [2020-11-07 06:35:12,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:35:12,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840295824] [2020-11-07 06:35:12,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:35:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:12,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:35:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:12,327 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:35:12,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1840295824] [2020-11-07 06:35:12,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:35:12,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-07 06:35:12,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403225903] [2020-11-07 06:35:12,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 06:35:12,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:35:12,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 06:35:12,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-07 06:35:12,330 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 10 states. [2020-11-07 06:35:12,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:35:12,836 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2020-11-07 06:35:12,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 06:35:12,837 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-11-07 06:35:12,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:35:12,838 INFO L225 Difference]: With dead ends: 76 [2020-11-07 06:35:12,838 INFO L226 Difference]: Without dead ends: 50 [2020-11-07 06:35:12,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2020-11-07 06:35:12,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-07 06:35:12,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2020-11-07 06:35:12,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-07 06:35:12,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2020-11-07 06:35:12,854 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 36 [2020-11-07 06:35:12,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:35:12,854 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2020-11-07 06:35:12,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 06:35:12,855 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2020-11-07 06:35:12,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-07 06:35:12,856 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:35:12,856 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:35:12,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 06:35:12,857 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:35:12,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:35:12,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1760154372, now seen corresponding path program 3 times [2020-11-07 06:35:12,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:35:12,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524941892] [2020-11-07 06:35:12,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:35:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:13,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:35:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:13,119 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:35:13,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524941892] [2020-11-07 06:35:13,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:35:13,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-11-07 06:35:13,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144740147] [2020-11-07 06:35:13,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-07 06:35:13,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:35:13,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-07 06:35:13,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-11-07 06:35:13,123 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 12 states. [2020-11-07 06:35:13,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:35:13,969 INFO L93 Difference]: Finished difference Result 90 states and 94 transitions. [2020-11-07 06:35:13,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-07 06:35:13,969 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 43 [2020-11-07 06:35:13,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:35:13,971 INFO L225 Difference]: With dead ends: 90 [2020-11-07 06:35:13,971 INFO L226 Difference]: Without dead ends: 57 [2020-11-07 06:35:13,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2020-11-07 06:35:13,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-07 06:35:13,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-11-07 06:35:13,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-07 06:35:13,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-11-07 06:35:13,989 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 43 [2020-11-07 06:35:13,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:35:13,990 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-11-07 06:35:13,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-07 06:35:13,990 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-11-07 06:35:13,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-07 06:35:13,991 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:35:13,992 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1] [2020-11-07 06:35:13,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 06:35:13,992 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:35:13,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:35:13,993 INFO L82 PathProgramCache]: Analyzing trace with hash 635811909, now seen corresponding path program 4 times [2020-11-07 06:35:13,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:35:13,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531267459] [2020-11-07 06:35:13,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:35:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:14,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:35:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:14,276 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:35:14,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531267459] [2020-11-07 06:35:14,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:35:14,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-11-07 06:35:14,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608597861] [2020-11-07 06:35:14,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-07 06:35:14,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:35:14,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-07 06:35:14,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-11-07 06:35:14,279 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 14 states. [2020-11-07 06:35:15,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:35:15,396 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2020-11-07 06:35:15,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-07 06:35:15,396 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 50 [2020-11-07 06:35:15,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:35:15,398 INFO L225 Difference]: With dead ends: 72 [2020-11-07 06:35:15,398 INFO L226 Difference]: Without dead ends: 65 [2020-11-07 06:35:15,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2020-11-07 06:35:15,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-11-07 06:35:15,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2020-11-07 06:35:15,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-07 06:35:15,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2020-11-07 06:35:15,419 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 50 [2020-11-07 06:35:15,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:35:15,420 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2020-11-07 06:35:15,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-07 06:35:15,420 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2020-11-07 06:35:15,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-11-07 06:35:15,421 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:35:15,422 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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, 1, 1] [2020-11-07 06:35:15,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 06:35:15,422 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:35:15,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:35:15,423 INFO L82 PathProgramCache]: Analyzing trace with hash 46766300, now seen corresponding path program 5 times [2020-11-07 06:35:15,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:35:15,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105426414] [2020-11-07 06:35:15,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:35:15,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:15,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:35:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:15,783 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 21 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:35:15,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105426414] [2020-11-07 06:35:15,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:35:15,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-11-07 06:35:15,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074775006] [2020-11-07 06:35:15,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-07 06:35:15,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:35:15,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-07 06:35:15,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-11-07 06:35:15,790 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 12 states. [2020-11-07 06:35:16,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:35:16,617 INFO L93 Difference]: Finished difference Result 88 states and 90 transitions. [2020-11-07 06:35:16,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-07 06:35:16,618 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-11-07 06:35:16,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:35:16,619 INFO L225 Difference]: With dead ends: 88 [2020-11-07 06:35:16,619 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 06:35:16,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2020-11-07 06:35:16,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 06:35:16,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 06:35:16,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 06:35:16,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 06:35:16,622 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2020-11-07 06:35:16,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:35:16,622 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 06:35:16,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-07 06:35:16,622 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 06:35:16,622 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 06:35:16,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 06:35:16,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 06:35:17,374 WARN L194 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 27 [2020-11-07 06:35:17,567 WARN L194 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 25 [2020-11-07 06:35:17,757 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 16 [2020-11-07 06:35:18,037 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-11-07 06:35:18,038 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-11-07 06:35:18,038 INFO L269 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-11-07 06:35:18,038 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-11-07 06:35:18,038 INFO L269 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-11-07 06:35:18,038 INFO L269 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-11-07 06:35:18,038 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 06:35:18,039 INFO L269 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-11-07 06:35:18,039 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 06:35:18,039 INFO L269 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2020-11-07 06:35:18,039 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 06:35:18,040 INFO L269 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-11-07 06:35:18,040 INFO L269 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-11-07 06:35:18,040 INFO L269 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-11-07 06:35:18,040 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 06:35:18,040 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 06:35:18,040 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 06:35:18,040 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 06:35:18,041 INFO L269 CegarLoopResult]: At program point mainEXIT(lines 14 34) the Hoare annotation is: true [2020-11-07 06:35:18,041 INFO L262 CegarLoopResult]: At program point L23(lines 23 24) the Hoare annotation is: (or (and (<= 4 main_~len~0) (<= main_~len~0 4)) (and (<= main_~len~0 3) (< 0 (+ (div main_~len~0 4294967296) 1)))) [2020-11-07 06:35:18,041 INFO L262 CegarLoopResult]: At program point L23-2(lines 23 24) the Hoare annotation is: (or (= main_~len~0 0) (and (<= main_~len~0 1) (<= 1 main_~len~0)) (and (<= main_~len~0 2) (<= 2 main_~len~0)) (and (<= main_~len~0 3) (<= 3 main_~len~0))) [2020-11-07 06:35:18,041 INFO L262 CegarLoopResult]: At program point L21-1(line 21) the Hoare annotation is: (and (< 0 (+ (div main_~len~0 4294967296) 1)) (<= main_~len~0 4)) [2020-11-07 06:35:18,041 INFO L262 CegarLoopResult]: At program point L21-3(line 21) the Hoare annotation is: (or (and (<= 4 main_~len~0) (<= main_~len~0 4)) (and (<= main_~len~0 3) (< 0 (+ (div main_~len~0 4294967296) 1)))) [2020-11-07 06:35:18,042 INFO L262 CegarLoopResult]: At program point L21-4(lines 21 29) the Hoare annotation is: (and (< 0 (+ (div main_~len~0 4294967296) 1)) (<= main_~len~0 4)) [2020-11-07 06:35:18,042 INFO L262 CegarLoopResult]: At program point L21-5(lines 21 29) the Hoare annotation is: (and (< 0 (+ (div main_~len~0 4294967296) 1)) (<= main_~len~0 4)) [2020-11-07 06:35:18,042 INFO L269 CegarLoopResult]: At program point mainFINAL(lines 14 34) the Hoare annotation is: true [2020-11-07 06:35:18,042 INFO L269 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: true [2020-11-07 06:35:18,042 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 14 34) the Hoare annotation is: true [2020-11-07 06:35:18,042 INFO L262 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (or (= main_~len~0 0) (and (<= main_~len~0 1) (<= 1 main_~len~0)) (and (<= main_~len~0 2) (<= 2 main_~len~0)) (and (<= main_~len~0 3) (<= 3 main_~len~0))) [2020-11-07 06:35:18,043 INFO L262 CegarLoopResult]: At program point L28-1(line 28) the Hoare annotation is: (or (and (<= main_~len~0 2) (<= 2 |main_#t~post8|) (<= 2 main_~len~0) (<= |main_#t~post8| 2)) (and (= |main_#t~post8| 0) (= main_~len~0 0)) (and (<= |main_#t~post8| 3) (<= main_~len~0 3) (<= 3 main_~len~0) (<= 3 |main_#t~post8|)) (and (<= |main_#t~post8| 1) (<= 1 |main_#t~post8|) (<= main_~len~0 1) (<= 1 main_~len~0))) [2020-11-07 06:35:18,043 INFO L262 CegarLoopResult]: At program point L28-2(line 28) the Hoare annotation is: (or (and (<= |main_#t~post8| 3) (<= 4 main_~len~0) (<= main_~len~0 4) (<= 3 |main_#t~post8|)) (and (<= main_~len~0 2) (<= 2 main_~len~0) (<= |main_#t~post8| 1) (<= 1 |main_#t~post8|)) (and (<= 2 |main_#t~post8|) (<= main_~len~0 3) (<= |main_#t~post8| 2) (<= 3 main_~len~0)) (and (= |main_#t~post8| 0) (<= main_~len~0 1) (<= 1 main_~len~0))) [2020-11-07 06:35:18,043 INFO L262 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: (and (<= 4 main_~len~0) (<= main_~len~0 4)) [2020-11-07 06:35:18,043 INFO L262 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (= main_~len~0 0) [2020-11-07 06:35:18,043 INFO L269 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-11-07 06:35:18,043 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2020-11-07 06:35:18,044 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: true [2020-11-07 06:35:18,044 INFO L262 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 06:35:18,044 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 06:35:18,044 INFO L262 CegarLoopResult]: At program point L7-1(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 06:35:18,044 INFO L269 CegarLoopResult]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2020-11-07 06:35:18,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:35:18 BoogieIcfgContainer [2020-11-07 06:35:18,063 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 06:35:18,066 INFO L168 Benchmark]: Toolchain (without parser) took 8626.32 ms. Allocated memory was 152.0 MB in the beginning and 219.2 MB in the end (delta: 67.1 MB). Free memory was 129.0 MB in the beginning and 82.3 MB in the end (delta: 46.7 MB). Peak memory consumption was 120.4 MB. Max. memory is 8.0 GB. [2020-11-07 06:35:18,067 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 152.0 MB. Free memory was 126.5 MB in the beginning and 126.4 MB in the end (delta: 120.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 06:35:18,067 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.84 ms. Allocated memory is still 152.0 MB. Free memory was 128.2 MB in the beginning and 118.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-07 06:35:18,068 INFO L168 Benchmark]: Boogie Preprocessor took 39.28 ms. Allocated memory is still 152.0 MB. Free memory was 118.6 MB in the beginning and 117.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 06:35:18,069 INFO L168 Benchmark]: RCFGBuilder took 499.60 ms. Allocated memory is still 152.0 MB. Free memory was 117.2 MB in the beginning and 135.8 MB in the end (delta: -18.6 MB). Peak memory consumption was 16.9 MB. Max. memory is 8.0 GB. [2020-11-07 06:35:18,070 INFO L168 Benchmark]: TraceAbstraction took 7824.47 ms. Allocated memory was 152.0 MB in the beginning and 219.2 MB in the end (delta: 67.1 MB). Free memory was 135.4 MB in the beginning and 82.3 MB in the end (delta: 53.1 MB). Peak memory consumption was 126.5 MB. Max. memory is 8.0 GB. [2020-11-07 06:35:18,074 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 152.0 MB. Free memory was 126.5 MB in the beginning and 126.4 MB in the end (delta: 120.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 243.84 ms. Allocated memory is still 152.0 MB. Free memory was 128.2 MB in the beginning and 118.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.28 ms. Allocated memory is still 152.0 MB. Free memory was 118.6 MB in the beginning and 117.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 499.60 ms. Allocated memory is still 152.0 MB. Free memory was 117.2 MB in the beginning and 135.8 MB in the end (delta: -18.6 MB). Peak memory consumption was 16.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7824.47 ms. Allocated memory was 152.0 MB in the beginning and 219.2 MB in the end (delta: 67.1 MB). Free memory was 135.4 MB in the beginning and 82.3 MB in the end (delta: 53.1 MB). Peak memory consumption was 126.5 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: 21]: Loop Invariant Derived loop invariant: 0 < len / 4294967296 + 1 && len <= 4 - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 14]: 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, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.2s, OverallIterations: 7, TraceHistogramMax: 5, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 215 SDtfs, 334 SDslu, 615 SDs, 0 SdLazy, 1252 SolverSat, 73 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred 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, 18 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 40 LocationsWithAnnotation, 124 PreInvPairs, 191 NumberOfFragments, 298 HoareAnnotationTreeSize, 124 FomulaSimplifications, 5598 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 40 FomulaSimplificationsInter, 1808 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 258 NumberOfCodeBlocks, 258 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 251 ConstructedInterpolants, 0 QuantifiedInterpolants, 47571 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 21/155 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...